Can overweight docs really give credible weight loss advice?

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Changed
Thu, 07/15/2021 - 10:50

 

Kevin Gendreau, MD, a weight loss doctor at Southcoast Health in Fall River, Maine, lets patients know that he was once obese. He says this knowledge inspires and motivates them to lose weight.

Courtesy Dr. Kevin Gendreau
Dr. Kevin Gendreau, before and after losing 125 pounds in 18 months

After dropping 125 pounds over 18 months, “I can relate to their binges, hardships, and plateaus on a very personal level,” he says.

Peminda Cabandugama, MD, an endocrinologist and obesity medicine specialist at Truman Medical Center at the University of Missouri-Kansas City, has weighed between 180 and 240 pounds in the past decade. He now weighs 225 pounds and has a healthy lifestyle.

“I have had patients come to me saying, ‘I used to see a different weight loss doctor who was not heavy. But how can he understand what I’m going through?’” he says.

Dr. Cabandugama shares his weight loss struggles with patients “to dispel this myth that weight management is as simple as just eating too much and not exercising. It involves a smorgasbord of emotions and hormones, some within and outside of our control. I hope that sharing this allows me to connect more with my patients so that they know that even their health care professional goes through the same challenges that they do.”

“Patients are more likely to make behavior changes when doctors are supportive and have had similar experiences and talk about their stories,” says Wendy Bennett, MD, an obesity researcher and associate professor of medicine at Johns Hopkins University in Baltimore.

Do patients respect overweight doctors?

While Dr. Gendreau and Dr. Cabandugama have lost weight, some doctors who would like to shed unwanted pounds have been unable to do so. What impact does this have on patients?  

Doctors sometimes have biased attitudes toward overweight patients, but few studies have looked at whether patients have biases towards overweight doctors. The results vary and may depend on whether or not the patients are overweight. 

A random online survey of 358 participants suggested that regardless of their own weight, people had biases about doctor weight gain. They viewed the overweight or obese doctors as less trustworthy and credible, which could lead the participants to reject their medical advice and change doctors. 

“Patients expect doctors who are providing health care to be doing everything they can to take care of their own health and well-being,” says Pamela Peeke, MD, an assistant clinical professor of medicine at the University of Maryland in Baltimore.

“I am a physician who believes you have to walk the talk — that the best teachers are those who live it,” she says.

Still, “I don’t think based on this one experimental study that we can conclude that overweight physicians are harming patients’ efforts to change their behavior,” notes Dr. Bennett, who was not involved in the study.

“I think that patients do often want to connect with their physicians on more personal levels, but without the story behind where the advice is coming from, patients may struggle to trust a provider who seems to be contradicting the messages,” she says.

A study that Dr. Bennett helped lead suggests that patients are not biased against overweight doctors if they themselves need to lose weight. A national survey of 600 overweight patients showed that 87% trusted diet advice from overweight primary care doctors, compared to 77% who trusted diet advice from doctors who had a healthy weight.

“This shows that patients were more trusting of physicians who are more like them, which can lead to better relationships. We know from the studies on race that patients are often more trusting of physicians from the same race as them,” says Dr. Bennett.

Dr. Gendreau says that when he was severely obese, some patients questioned whether to trust his weight loss advice.

“It was very awkward when they turned to me and  said, ‘What about you?’ I would respond that it’s my job to inform them about the risks to their health,” he says.

Nearly half (48%) of doctors said they are trying to lose weight, according to the 2021 Medscape Physician Lifestyle and Happiness Report. As a result, many doctors may end up in the position of seemingly advising to “do what I say, not what I do.”

Nearly three in five Americans are trying to lose weight, according to Gelesis poll results released in December 2020.

 

 

Should doctors pay more attention to wellness?

Doctors have an ethical duty to maintain their own health and wellness so they can provide safe and effective medical care. If they don’t have a healthy lifestyle, they need to make adjustments, the American Medical Association Code of Ethics advises.

Dr. Peeke agrees with the AMA. “We signed on to do this — we have to go out of our way to carve out time, even if it’s just 15 minutes where we hide away and eat that healthy lunch that we brought with us,” she says.

Dr. Gendreau suggests busy doctors do what he did.

“I started by bringing healthy snacks — small Ziploc bags filled with mixed nuts and berries — and expanded from there. This way, if I got hungry or stressed between patients, I would have easy access to something nutritious,” he says.

He and Dr. Peeke also suggest making protein shakes or berry smoothies that are low in sugar.

“These can keep you full for hours as you sip them between patients,” says Dr. Gendreau.

Convincing busy doctors to make lifestyle changes may be challenging. Sixty-five percent of those who responded to the Physician Lifestyle and Happiness Report say that they sometimes, rarely, or never focus on their health and wellness. Only 45% said they are eating healthy, and 65% said they exercise.  

“Self-care isn’t a priority for most physicians because we are taught to take care of others and to put them first,” says Dr. Gendreau. “Like many doctors, I had so many other priorities — family, friends, career. Also, my last year of medical school was so difficult that my priority was finishing. I pushed my health to the side and told myself that I could fix this later.”

Only about one in five medical schools require students to take a nutrition course, according to David Eisenberg, MD, an adjunct associate professor of nutrition at the Harvard T.H. Chan School of Public Health, Boston.

“I didn’t get one ounce of nutrition training, which is the reason I became a Pew Foundation scholar in nutrition and metabolism. I had to go outside of my traditional training,” says Dr. Peeke.

“Physicians are not adequately trained to do the behavioral counseling and motivational interviewing that is needed,” says Dr. Bennett. “We do a good job of diagnosing obesity based on body mass index and understanding the relationship with future health conditions. But most doctors struggle with both a lack of time and the skill set to make significant behavior changes.”

“Medical school curriculum is focused so heavily on the pathology and pathophysiology of obesity, rather than how to prevent it with the appropriate diet and exercise regimen,” Dr. Gendreau says. “My physician patients often tell me that their own education in the field of nutrition is lacking, which can affect their weight loss journey and what they teach their patients.”

Dr. Gendreau, crediting his own weight loss journey as well as his obesity medicine fellowship, says his confidence in discussing weight loss with patients has soared.

Reframing obesity as a chronic disease

Rather than criticizing overweight people, including doctors, for their personal health choices, a better approach is to think of weight or obesity as a chronic illness, says Dr. Bennett.

“If we understand that obesity is a chronic health condition that people are struggling with, we can empathize with them,” she says, recommending that more providers share their weight loss journeys with patients they give lifestyle advice to, which may help address and repair potential biases.


A version of this article first appeared on WebMD.com.

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Kevin Gendreau, MD, a weight loss doctor at Southcoast Health in Fall River, Maine, lets patients know that he was once obese. He says this knowledge inspires and motivates them to lose weight.

Courtesy Dr. Kevin Gendreau
Dr. Kevin Gendreau, before and after losing 125 pounds in 18 months

After dropping 125 pounds over 18 months, “I can relate to their binges, hardships, and plateaus on a very personal level,” he says.

Peminda Cabandugama, MD, an endocrinologist and obesity medicine specialist at Truman Medical Center at the University of Missouri-Kansas City, has weighed between 180 and 240 pounds in the past decade. He now weighs 225 pounds and has a healthy lifestyle.

“I have had patients come to me saying, ‘I used to see a different weight loss doctor who was not heavy. But how can he understand what I’m going through?’” he says.

Dr. Cabandugama shares his weight loss struggles with patients “to dispel this myth that weight management is as simple as just eating too much and not exercising. It involves a smorgasbord of emotions and hormones, some within and outside of our control. I hope that sharing this allows me to connect more with my patients so that they know that even their health care professional goes through the same challenges that they do.”

“Patients are more likely to make behavior changes when doctors are supportive and have had similar experiences and talk about their stories,” says Wendy Bennett, MD, an obesity researcher and associate professor of medicine at Johns Hopkins University in Baltimore.

Do patients respect overweight doctors?

While Dr. Gendreau and Dr. Cabandugama have lost weight, some doctors who would like to shed unwanted pounds have been unable to do so. What impact does this have on patients?  

Doctors sometimes have biased attitudes toward overweight patients, but few studies have looked at whether patients have biases towards overweight doctors. The results vary and may depend on whether or not the patients are overweight. 

A random online survey of 358 participants suggested that regardless of their own weight, people had biases about doctor weight gain. They viewed the overweight or obese doctors as less trustworthy and credible, which could lead the participants to reject their medical advice and change doctors. 

“Patients expect doctors who are providing health care to be doing everything they can to take care of their own health and well-being,” says Pamela Peeke, MD, an assistant clinical professor of medicine at the University of Maryland in Baltimore.

“I am a physician who believes you have to walk the talk — that the best teachers are those who live it,” she says.

Still, “I don’t think based on this one experimental study that we can conclude that overweight physicians are harming patients’ efforts to change their behavior,” notes Dr. Bennett, who was not involved in the study.

“I think that patients do often want to connect with their physicians on more personal levels, but without the story behind where the advice is coming from, patients may struggle to trust a provider who seems to be contradicting the messages,” she says.

A study that Dr. Bennett helped lead suggests that patients are not biased against overweight doctors if they themselves need to lose weight. A national survey of 600 overweight patients showed that 87% trusted diet advice from overweight primary care doctors, compared to 77% who trusted diet advice from doctors who had a healthy weight.

“This shows that patients were more trusting of physicians who are more like them, which can lead to better relationships. We know from the studies on race that patients are often more trusting of physicians from the same race as them,” says Dr. Bennett.

Dr. Gendreau says that when he was severely obese, some patients questioned whether to trust his weight loss advice.

“It was very awkward when they turned to me and  said, ‘What about you?’ I would respond that it’s my job to inform them about the risks to their health,” he says.

Nearly half (48%) of doctors said they are trying to lose weight, according to the 2021 Medscape Physician Lifestyle and Happiness Report. As a result, many doctors may end up in the position of seemingly advising to “do what I say, not what I do.”

Nearly three in five Americans are trying to lose weight, according to Gelesis poll results released in December 2020.

 

 

Should doctors pay more attention to wellness?

Doctors have an ethical duty to maintain their own health and wellness so they can provide safe and effective medical care. If they don’t have a healthy lifestyle, they need to make adjustments, the American Medical Association Code of Ethics advises.

Dr. Peeke agrees with the AMA. “We signed on to do this — we have to go out of our way to carve out time, even if it’s just 15 minutes where we hide away and eat that healthy lunch that we brought with us,” she says.

Dr. Gendreau suggests busy doctors do what he did.

“I started by bringing healthy snacks — small Ziploc bags filled with mixed nuts and berries — and expanded from there. This way, if I got hungry or stressed between patients, I would have easy access to something nutritious,” he says.

He and Dr. Peeke also suggest making protein shakes or berry smoothies that are low in sugar.

“These can keep you full for hours as you sip them between patients,” says Dr. Gendreau.

Convincing busy doctors to make lifestyle changes may be challenging. Sixty-five percent of those who responded to the Physician Lifestyle and Happiness Report say that they sometimes, rarely, or never focus on their health and wellness. Only 45% said they are eating healthy, and 65% said they exercise.  

“Self-care isn’t a priority for most physicians because we are taught to take care of others and to put them first,” says Dr. Gendreau. “Like many doctors, I had so many other priorities — family, friends, career. Also, my last year of medical school was so difficult that my priority was finishing. I pushed my health to the side and told myself that I could fix this later.”

Only about one in five medical schools require students to take a nutrition course, according to David Eisenberg, MD, an adjunct associate professor of nutrition at the Harvard T.H. Chan School of Public Health, Boston.

“I didn’t get one ounce of nutrition training, which is the reason I became a Pew Foundation scholar in nutrition and metabolism. I had to go outside of my traditional training,” says Dr. Peeke.

“Physicians are not adequately trained to do the behavioral counseling and motivational interviewing that is needed,” says Dr. Bennett. “We do a good job of diagnosing obesity based on body mass index and understanding the relationship with future health conditions. But most doctors struggle with both a lack of time and the skill set to make significant behavior changes.”

“Medical school curriculum is focused so heavily on the pathology and pathophysiology of obesity, rather than how to prevent it with the appropriate diet and exercise regimen,” Dr. Gendreau says. “My physician patients often tell me that their own education in the field of nutrition is lacking, which can affect their weight loss journey and what they teach their patients.”

Dr. Gendreau, crediting his own weight loss journey as well as his obesity medicine fellowship, says his confidence in discussing weight loss with patients has soared.

Reframing obesity as a chronic disease

Rather than criticizing overweight people, including doctors, for their personal health choices, a better approach is to think of weight or obesity as a chronic illness, says Dr. Bennett.

“If we understand that obesity is a chronic health condition that people are struggling with, we can empathize with them,” she says, recommending that more providers share their weight loss journeys with patients they give lifestyle advice to, which may help address and repair potential biases.


A version of this article first appeared on WebMD.com.

 

Kevin Gendreau, MD, a weight loss doctor at Southcoast Health in Fall River, Maine, lets patients know that he was once obese. He says this knowledge inspires and motivates them to lose weight.

Courtesy Dr. Kevin Gendreau
Dr. Kevin Gendreau, before and after losing 125 pounds in 18 months

After dropping 125 pounds over 18 months, “I can relate to their binges, hardships, and plateaus on a very personal level,” he says.

Peminda Cabandugama, MD, an endocrinologist and obesity medicine specialist at Truman Medical Center at the University of Missouri-Kansas City, has weighed between 180 and 240 pounds in the past decade. He now weighs 225 pounds and has a healthy lifestyle.

“I have had patients come to me saying, ‘I used to see a different weight loss doctor who was not heavy. But how can he understand what I’m going through?’” he says.

Dr. Cabandugama shares his weight loss struggles with patients “to dispel this myth that weight management is as simple as just eating too much and not exercising. It involves a smorgasbord of emotions and hormones, some within and outside of our control. I hope that sharing this allows me to connect more with my patients so that they know that even their health care professional goes through the same challenges that they do.”

“Patients are more likely to make behavior changes when doctors are supportive and have had similar experiences and talk about their stories,” says Wendy Bennett, MD, an obesity researcher and associate professor of medicine at Johns Hopkins University in Baltimore.

Do patients respect overweight doctors?

While Dr. Gendreau and Dr. Cabandugama have lost weight, some doctors who would like to shed unwanted pounds have been unable to do so. What impact does this have on patients?  

Doctors sometimes have biased attitudes toward overweight patients, but few studies have looked at whether patients have biases towards overweight doctors. The results vary and may depend on whether or not the patients are overweight. 

A random online survey of 358 participants suggested that regardless of their own weight, people had biases about doctor weight gain. They viewed the overweight or obese doctors as less trustworthy and credible, which could lead the participants to reject their medical advice and change doctors. 

“Patients expect doctors who are providing health care to be doing everything they can to take care of their own health and well-being,” says Pamela Peeke, MD, an assistant clinical professor of medicine at the University of Maryland in Baltimore.

“I am a physician who believes you have to walk the talk — that the best teachers are those who live it,” she says.

Still, “I don’t think based on this one experimental study that we can conclude that overweight physicians are harming patients’ efforts to change their behavior,” notes Dr. Bennett, who was not involved in the study.

“I think that patients do often want to connect with their physicians on more personal levels, but without the story behind where the advice is coming from, patients may struggle to trust a provider who seems to be contradicting the messages,” she says.

A study that Dr. Bennett helped lead suggests that patients are not biased against overweight doctors if they themselves need to lose weight. A national survey of 600 overweight patients showed that 87% trusted diet advice from overweight primary care doctors, compared to 77% who trusted diet advice from doctors who had a healthy weight.

“This shows that patients were more trusting of physicians who are more like them, which can lead to better relationships. We know from the studies on race that patients are often more trusting of physicians from the same race as them,” says Dr. Bennett.

Dr. Gendreau says that when he was severely obese, some patients questioned whether to trust his weight loss advice.

“It was very awkward when they turned to me and  said, ‘What about you?’ I would respond that it’s my job to inform them about the risks to their health,” he says.

Nearly half (48%) of doctors said they are trying to lose weight, according to the 2021 Medscape Physician Lifestyle and Happiness Report. As a result, many doctors may end up in the position of seemingly advising to “do what I say, not what I do.”

Nearly three in five Americans are trying to lose weight, according to Gelesis poll results released in December 2020.

 

 

Should doctors pay more attention to wellness?

Doctors have an ethical duty to maintain their own health and wellness so they can provide safe and effective medical care. If they don’t have a healthy lifestyle, they need to make adjustments, the American Medical Association Code of Ethics advises.

Dr. Peeke agrees with the AMA. “We signed on to do this — we have to go out of our way to carve out time, even if it’s just 15 minutes where we hide away and eat that healthy lunch that we brought with us,” she says.

Dr. Gendreau suggests busy doctors do what he did.

“I started by bringing healthy snacks — small Ziploc bags filled with mixed nuts and berries — and expanded from there. This way, if I got hungry or stressed between patients, I would have easy access to something nutritious,” he says.

He and Dr. Peeke also suggest making protein shakes or berry smoothies that are low in sugar.

“These can keep you full for hours as you sip them between patients,” says Dr. Gendreau.

Convincing busy doctors to make lifestyle changes may be challenging. Sixty-five percent of those who responded to the Physician Lifestyle and Happiness Report say that they sometimes, rarely, or never focus on their health and wellness. Only 45% said they are eating healthy, and 65% said they exercise.  

“Self-care isn’t a priority for most physicians because we are taught to take care of others and to put them first,” says Dr. Gendreau. “Like many doctors, I had so many other priorities — family, friends, career. Also, my last year of medical school was so difficult that my priority was finishing. I pushed my health to the side and told myself that I could fix this later.”

Only about one in five medical schools require students to take a nutrition course, according to David Eisenberg, MD, an adjunct associate professor of nutrition at the Harvard T.H. Chan School of Public Health, Boston.

“I didn’t get one ounce of nutrition training, which is the reason I became a Pew Foundation scholar in nutrition and metabolism. I had to go outside of my traditional training,” says Dr. Peeke.

“Physicians are not adequately trained to do the behavioral counseling and motivational interviewing that is needed,” says Dr. Bennett. “We do a good job of diagnosing obesity based on body mass index and understanding the relationship with future health conditions. But most doctors struggle with both a lack of time and the skill set to make significant behavior changes.”

“Medical school curriculum is focused so heavily on the pathology and pathophysiology of obesity, rather than how to prevent it with the appropriate diet and exercise regimen,” Dr. Gendreau says. “My physician patients often tell me that their own education in the field of nutrition is lacking, which can affect their weight loss journey and what they teach their patients.”

Dr. Gendreau, crediting his own weight loss journey as well as his obesity medicine fellowship, says his confidence in discussing weight loss with patients has soared.

Reframing obesity as a chronic disease

Rather than criticizing overweight people, including doctors, for their personal health choices, a better approach is to think of weight or obesity as a chronic illness, says Dr. Bennett.

“If we understand that obesity is a chronic health condition that people are struggling with, we can empathize with them,” she says, recommending that more providers share their weight loss journeys with patients they give lifestyle advice to, which may help address and repair potential biases.


A version of this article first appeared on WebMD.com.

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Meta-analysis supports cardiovascular benefits of EPA

Article Type
Changed
Tue, 07/13/2021 - 08:21

 

Support for a cardiovascular benefit of omega-3 fatty acids, particularly eicosapentaenoic acid (EPA), has come from a new systematic review and meta-analysis of randomized trials.

Dr. Deepak L. Bhatt

The meta-analysis of 38 randomized controlled trials found that omega-3 fatty acids improved cardiovascular outcomes, with a greater reduction in cardiovascular risk in studies of EPA alone rather than of combined eicosapentaenoic plus docosahexaenoic acid (DHA) supplements.

The paper was published online in EClinicalMedicine.

Senior author Deepak Bhatt, MD, Brigham and Women’s Hospital, Boston, was also lead investigator of the REDUCE-IT trial, which is included in the analysis and showed a 25% relative risk reduction in major cardiovascular events with a high-dose EPA product.

But the REDUCE-IT trial has been mired in controversy, with suggestions that the benefit seen might have been exaggerated because of the use of a harmful placebo. In addition, a second large trial of high-dose omega-3 fatty acids, STRENGTH (which tested a combination EPA/DHA product) showed no benefit on cardiovascular outcomes.

Dr. Bhatt said the new meta-analysis provides “a totality of evidence” that “supports a robust and consistent benefit of EPA.”

In the review, the authors concluded: “In this systematic review and meta-analysis, we noted moderate certainty of evidence favoring omega-3 fatty acids for reducing cardiovascular mortality and outcomes. ... The magnitude of relative reductions was robust in EPA trials versus those of EPA+DHA, suggesting differential effects of EPA and DHA in cardiovascular risk reduction.”
 

Controversy continues

But commenting on the publication for an interview, Steven Nissen, MD, Cleveland Clinic, who led the STRENGTH trial, pointed out that 85% of the EPA data in the new meta-analysis came from REDUCE-IT, so the results were a “foregone conclusion.”

Dr. Steven Nissen

“The purpose of a meta-analysis is to answer scientific questions when existing studies are too small to yield statistically robust results. That is not the case here,” Dr. Nissen stated.

He added: “There are only two major trials of EPA and both have important flaws. REDUCE-IT used a questionable placebo (mineral oil) and JELIS was an open-label trial that studied patients with baseline LDL [cholesterol] of 180 mg/dL that was not appropriately treated. A meta-analysis is only as good as the studies that it includes. The other EPA plus DHA studies were essentially neutral.”

Dr. Bhatt responded that, “to date, every randomized trial of EPA only has been positive. Some have been placebo controlled, some have been open label. This meta-analysis corroborates the results of each of those trials in a statistically robust way.”

He added: “Of course, REDUCE-IT is the most rigorous, contemporary trial of EPA. However, in our meta-analysis, even when excluding REDUCE-IT (or for that matter, JELIS), the EPA trials still significantly reduced cardiovascular events.”

Dr. Bhatt also pointed out that two randomized imaging studies, CHERRY and EVAPORATE, have shown benefits of EPA.

“Beyond the clinical trial data, there is a growing amount of evidence supporting the unique biological actions of different omega-3 fatty acids. EPA, in particular, appears to have the strongest basic science evidence supporting cardiovascular benefits. Overall, it is a remarkably consistent scientific story in support of EPA’s beneficial effects on cardiovascular health,” he stated.
 

 

 

38 trials included

For the current paper, Dr. Bhatt and coauthors performed a comprehensive literature search for randomized trials comparing omega-3 fatty acids with control (placebo, no supplementation, or lower dose of omega-3 fatty acids) in adults, with a follow-up of at least 12 months, and mortality and cardiovascular outcomes as endpoints.

Ultimately, 38 trials encompassing 149,051 patients were included. Of these, four trials compared EPA with control, 34 trials compared EPA+DHA with control, and 22 trials were in primary prevention. The dose of omega-3 fatty acids ranged from 0.4 g/day to 5.5 g/day.

A total of 25 trials with 143,514 individuals reported 5,550 events of cardiovascular mortality, and 24 trials with 140,983 individuals reported 10,795 events of all-cause mortality.

Omega-3 fatty acids were associated with reduced cardiovascular mortality (rate ratio, 0.93; P = .01), but not all-cause mortality (RR, 0.97; P = .27). The meta-analysis showed reduction in cardiovascular mortality with EPA monotherapy (RR, 0.82; P = .04) and EPA+DHA combination (RR, 0.94; P = .02).

A total of 20 trials with 125,611 individuals reported 2,989 nonfatal myocardial infarction events, and 29 trials with 144,384 individuals reported 9,153 coronary heart disease (CHD) events.

Omega-3 fatty acids were associated with reducing nonfatal MI (RR, 0.87; P = .0001) and CHD (RR, 0.91; P = .0002). The meta-analysis showed higher risk reductions in nonfatal MI with EPA monotherapy (RR, 0.72; P = .00002) than with EPA+DHA combination (RR, 0.92; P = .05), and also for CHD events with EPA monotherapy (RR, 0.73; P = .00004) than with EPA+DHA combination (RR, 0.94; P = .01).

A total of 17 trials (n = 135,019) reported 13,234 events of MACE, and 13 trials (n = 117,890) reported 7,416 events of revascularization.

Omega-3 fatty acids were associated with reducing MACE (RR, 0.95; P = .002) and revascularization (RR, 0.91; P = .0001). The meta-analysis showed higher risk reductions in MACE with EPA monotherapy (RR, 0.78; P = .00000001), whereas EPA+DHA combination did not reduce MACE (RR, 0.99; P = .48). This effect was consistent for revascularization.

A total of eight trials with 65,404 individuals reported 935 nonfatal strokes, and eight trials with 51,336 individuals reported 1,572 events of atrial fibrillation (AFib).

Omega-3 fatty acids did not significantly reduce nonfatal stroke (RR, 1.04; P = .55), but EPA monotherapy was associated with a reduction of nonfatal stroke, compared with control (RR: 0.71; P = .01).

Conversely, omega-3 fatty acids were associated with increased risk for AFib (RR, 1.26; P = .004), with a higher risk with EPA monotherapy than with control (RR, 1.35; P = .004).

Overall, omega-3 fatty acids did not prevent sudden cardiac death or increase gastrointestinal-related adverse events, total bleeding, or major or minor bleeding; however, the meta-analysis showed a higher risk of total bleeding with EPA monotherapy than with control (RR, 1.49; P = .006).

An influence analysis with stepwise exclusion of one trial at a time, including REDUCE-IT, did not alter the overall summary estimates. “Despite the exclusion of REDUCE-IT, EPA monotherapy reduced MACE by 23%, compared with the control,” the authors reported.

They said these new findings also have important implications for clinical practice and treatment guidelines.

“After REDUCE-IT, several national and international guidelines endorsed EPA in their therapeutic recommendations. However, the publication of two recent negative trials of EPA + DHA has created some confusion in the scientific community about the value of omega-3 FAs in preventing atherosclerotic cardiovascular disease [ASCVD],” they stated.

“This meta-analysis provides reassurance about the role of omega-3 fatty acids, specifically EPA, in the current treatment framework of ASCVD residual cardiovascular risk reduction and encourages investigators to explore further the cardiovascular effects of EPA across different clinical settings,” they added.

REDUCE-IT was sponsored by Amarin. Brigham and Women’s Hospital receives research funding from Amarin for the work Dr. Bhatt did as the trial chair and as the international principal investigator. The present analysis was unfunded.

A version of this article first appeared on Medscape.com.

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Support for a cardiovascular benefit of omega-3 fatty acids, particularly eicosapentaenoic acid (EPA), has come from a new systematic review and meta-analysis of randomized trials.

Dr. Deepak L. Bhatt

The meta-analysis of 38 randomized controlled trials found that omega-3 fatty acids improved cardiovascular outcomes, with a greater reduction in cardiovascular risk in studies of EPA alone rather than of combined eicosapentaenoic plus docosahexaenoic acid (DHA) supplements.

The paper was published online in EClinicalMedicine.

Senior author Deepak Bhatt, MD, Brigham and Women’s Hospital, Boston, was also lead investigator of the REDUCE-IT trial, which is included in the analysis and showed a 25% relative risk reduction in major cardiovascular events with a high-dose EPA product.

But the REDUCE-IT trial has been mired in controversy, with suggestions that the benefit seen might have been exaggerated because of the use of a harmful placebo. In addition, a second large trial of high-dose omega-3 fatty acids, STRENGTH (which tested a combination EPA/DHA product) showed no benefit on cardiovascular outcomes.

Dr. Bhatt said the new meta-analysis provides “a totality of evidence” that “supports a robust and consistent benefit of EPA.”

In the review, the authors concluded: “In this systematic review and meta-analysis, we noted moderate certainty of evidence favoring omega-3 fatty acids for reducing cardiovascular mortality and outcomes. ... The magnitude of relative reductions was robust in EPA trials versus those of EPA+DHA, suggesting differential effects of EPA and DHA in cardiovascular risk reduction.”
 

Controversy continues

But commenting on the publication for an interview, Steven Nissen, MD, Cleveland Clinic, who led the STRENGTH trial, pointed out that 85% of the EPA data in the new meta-analysis came from REDUCE-IT, so the results were a “foregone conclusion.”

Dr. Steven Nissen

“The purpose of a meta-analysis is to answer scientific questions when existing studies are too small to yield statistically robust results. That is not the case here,” Dr. Nissen stated.

He added: “There are only two major trials of EPA and both have important flaws. REDUCE-IT used a questionable placebo (mineral oil) and JELIS was an open-label trial that studied patients with baseline LDL [cholesterol] of 180 mg/dL that was not appropriately treated. A meta-analysis is only as good as the studies that it includes. The other EPA plus DHA studies were essentially neutral.”

Dr. Bhatt responded that, “to date, every randomized trial of EPA only has been positive. Some have been placebo controlled, some have been open label. This meta-analysis corroborates the results of each of those trials in a statistically robust way.”

He added: “Of course, REDUCE-IT is the most rigorous, contemporary trial of EPA. However, in our meta-analysis, even when excluding REDUCE-IT (or for that matter, JELIS), the EPA trials still significantly reduced cardiovascular events.”

Dr. Bhatt also pointed out that two randomized imaging studies, CHERRY and EVAPORATE, have shown benefits of EPA.

“Beyond the clinical trial data, there is a growing amount of evidence supporting the unique biological actions of different omega-3 fatty acids. EPA, in particular, appears to have the strongest basic science evidence supporting cardiovascular benefits. Overall, it is a remarkably consistent scientific story in support of EPA’s beneficial effects on cardiovascular health,” he stated.
 

 

 

38 trials included

For the current paper, Dr. Bhatt and coauthors performed a comprehensive literature search for randomized trials comparing omega-3 fatty acids with control (placebo, no supplementation, or lower dose of omega-3 fatty acids) in adults, with a follow-up of at least 12 months, and mortality and cardiovascular outcomes as endpoints.

Ultimately, 38 trials encompassing 149,051 patients were included. Of these, four trials compared EPA with control, 34 trials compared EPA+DHA with control, and 22 trials were in primary prevention. The dose of omega-3 fatty acids ranged from 0.4 g/day to 5.5 g/day.

A total of 25 trials with 143,514 individuals reported 5,550 events of cardiovascular mortality, and 24 trials with 140,983 individuals reported 10,795 events of all-cause mortality.

Omega-3 fatty acids were associated with reduced cardiovascular mortality (rate ratio, 0.93; P = .01), but not all-cause mortality (RR, 0.97; P = .27). The meta-analysis showed reduction in cardiovascular mortality with EPA monotherapy (RR, 0.82; P = .04) and EPA+DHA combination (RR, 0.94; P = .02).

A total of 20 trials with 125,611 individuals reported 2,989 nonfatal myocardial infarction events, and 29 trials with 144,384 individuals reported 9,153 coronary heart disease (CHD) events.

Omega-3 fatty acids were associated with reducing nonfatal MI (RR, 0.87; P = .0001) and CHD (RR, 0.91; P = .0002). The meta-analysis showed higher risk reductions in nonfatal MI with EPA monotherapy (RR, 0.72; P = .00002) than with EPA+DHA combination (RR, 0.92; P = .05), and also for CHD events with EPA monotherapy (RR, 0.73; P = .00004) than with EPA+DHA combination (RR, 0.94; P = .01).

A total of 17 trials (n = 135,019) reported 13,234 events of MACE, and 13 trials (n = 117,890) reported 7,416 events of revascularization.

Omega-3 fatty acids were associated with reducing MACE (RR, 0.95; P = .002) and revascularization (RR, 0.91; P = .0001). The meta-analysis showed higher risk reductions in MACE with EPA monotherapy (RR, 0.78; P = .00000001), whereas EPA+DHA combination did not reduce MACE (RR, 0.99; P = .48). This effect was consistent for revascularization.

A total of eight trials with 65,404 individuals reported 935 nonfatal strokes, and eight trials with 51,336 individuals reported 1,572 events of atrial fibrillation (AFib).

Omega-3 fatty acids did not significantly reduce nonfatal stroke (RR, 1.04; P = .55), but EPA monotherapy was associated with a reduction of nonfatal stroke, compared with control (RR: 0.71; P = .01).

Conversely, omega-3 fatty acids were associated with increased risk for AFib (RR, 1.26; P = .004), with a higher risk with EPA monotherapy than with control (RR, 1.35; P = .004).

Overall, omega-3 fatty acids did not prevent sudden cardiac death or increase gastrointestinal-related adverse events, total bleeding, or major or minor bleeding; however, the meta-analysis showed a higher risk of total bleeding with EPA monotherapy than with control (RR, 1.49; P = .006).

An influence analysis with stepwise exclusion of one trial at a time, including REDUCE-IT, did not alter the overall summary estimates. “Despite the exclusion of REDUCE-IT, EPA monotherapy reduced MACE by 23%, compared with the control,” the authors reported.

They said these new findings also have important implications for clinical practice and treatment guidelines.

“After REDUCE-IT, several national and international guidelines endorsed EPA in their therapeutic recommendations. However, the publication of two recent negative trials of EPA + DHA has created some confusion in the scientific community about the value of omega-3 FAs in preventing atherosclerotic cardiovascular disease [ASCVD],” they stated.

“This meta-analysis provides reassurance about the role of omega-3 fatty acids, specifically EPA, in the current treatment framework of ASCVD residual cardiovascular risk reduction and encourages investigators to explore further the cardiovascular effects of EPA across different clinical settings,” they added.

REDUCE-IT was sponsored by Amarin. Brigham and Women’s Hospital receives research funding from Amarin for the work Dr. Bhatt did as the trial chair and as the international principal investigator. The present analysis was unfunded.

A version of this article first appeared on Medscape.com.

 

Support for a cardiovascular benefit of omega-3 fatty acids, particularly eicosapentaenoic acid (EPA), has come from a new systematic review and meta-analysis of randomized trials.

Dr. Deepak L. Bhatt

The meta-analysis of 38 randomized controlled trials found that omega-3 fatty acids improved cardiovascular outcomes, with a greater reduction in cardiovascular risk in studies of EPA alone rather than of combined eicosapentaenoic plus docosahexaenoic acid (DHA) supplements.

The paper was published online in EClinicalMedicine.

Senior author Deepak Bhatt, MD, Brigham and Women’s Hospital, Boston, was also lead investigator of the REDUCE-IT trial, which is included in the analysis and showed a 25% relative risk reduction in major cardiovascular events with a high-dose EPA product.

But the REDUCE-IT trial has been mired in controversy, with suggestions that the benefit seen might have been exaggerated because of the use of a harmful placebo. In addition, a second large trial of high-dose omega-3 fatty acids, STRENGTH (which tested a combination EPA/DHA product) showed no benefit on cardiovascular outcomes.

Dr. Bhatt said the new meta-analysis provides “a totality of evidence” that “supports a robust and consistent benefit of EPA.”

In the review, the authors concluded: “In this systematic review and meta-analysis, we noted moderate certainty of evidence favoring omega-3 fatty acids for reducing cardiovascular mortality and outcomes. ... The magnitude of relative reductions was robust in EPA trials versus those of EPA+DHA, suggesting differential effects of EPA and DHA in cardiovascular risk reduction.”
 

Controversy continues

But commenting on the publication for an interview, Steven Nissen, MD, Cleveland Clinic, who led the STRENGTH trial, pointed out that 85% of the EPA data in the new meta-analysis came from REDUCE-IT, so the results were a “foregone conclusion.”

Dr. Steven Nissen

“The purpose of a meta-analysis is to answer scientific questions when existing studies are too small to yield statistically robust results. That is not the case here,” Dr. Nissen stated.

He added: “There are only two major trials of EPA and both have important flaws. REDUCE-IT used a questionable placebo (mineral oil) and JELIS was an open-label trial that studied patients with baseline LDL [cholesterol] of 180 mg/dL that was not appropriately treated. A meta-analysis is only as good as the studies that it includes. The other EPA plus DHA studies were essentially neutral.”

Dr. Bhatt responded that, “to date, every randomized trial of EPA only has been positive. Some have been placebo controlled, some have been open label. This meta-analysis corroborates the results of each of those trials in a statistically robust way.”

He added: “Of course, REDUCE-IT is the most rigorous, contemporary trial of EPA. However, in our meta-analysis, even when excluding REDUCE-IT (or for that matter, JELIS), the EPA trials still significantly reduced cardiovascular events.”

Dr. Bhatt also pointed out that two randomized imaging studies, CHERRY and EVAPORATE, have shown benefits of EPA.

“Beyond the clinical trial data, there is a growing amount of evidence supporting the unique biological actions of different omega-3 fatty acids. EPA, in particular, appears to have the strongest basic science evidence supporting cardiovascular benefits. Overall, it is a remarkably consistent scientific story in support of EPA’s beneficial effects on cardiovascular health,” he stated.
 

 

 

38 trials included

For the current paper, Dr. Bhatt and coauthors performed a comprehensive literature search for randomized trials comparing omega-3 fatty acids with control (placebo, no supplementation, or lower dose of omega-3 fatty acids) in adults, with a follow-up of at least 12 months, and mortality and cardiovascular outcomes as endpoints.

Ultimately, 38 trials encompassing 149,051 patients were included. Of these, four trials compared EPA with control, 34 trials compared EPA+DHA with control, and 22 trials were in primary prevention. The dose of omega-3 fatty acids ranged from 0.4 g/day to 5.5 g/day.

A total of 25 trials with 143,514 individuals reported 5,550 events of cardiovascular mortality, and 24 trials with 140,983 individuals reported 10,795 events of all-cause mortality.

Omega-3 fatty acids were associated with reduced cardiovascular mortality (rate ratio, 0.93; P = .01), but not all-cause mortality (RR, 0.97; P = .27). The meta-analysis showed reduction in cardiovascular mortality with EPA monotherapy (RR, 0.82; P = .04) and EPA+DHA combination (RR, 0.94; P = .02).

A total of 20 trials with 125,611 individuals reported 2,989 nonfatal myocardial infarction events, and 29 trials with 144,384 individuals reported 9,153 coronary heart disease (CHD) events.

Omega-3 fatty acids were associated with reducing nonfatal MI (RR, 0.87; P = .0001) and CHD (RR, 0.91; P = .0002). The meta-analysis showed higher risk reductions in nonfatal MI with EPA monotherapy (RR, 0.72; P = .00002) than with EPA+DHA combination (RR, 0.92; P = .05), and also for CHD events with EPA monotherapy (RR, 0.73; P = .00004) than with EPA+DHA combination (RR, 0.94; P = .01).

A total of 17 trials (n = 135,019) reported 13,234 events of MACE, and 13 trials (n = 117,890) reported 7,416 events of revascularization.

Omega-3 fatty acids were associated with reducing MACE (RR, 0.95; P = .002) and revascularization (RR, 0.91; P = .0001). The meta-analysis showed higher risk reductions in MACE with EPA monotherapy (RR, 0.78; P = .00000001), whereas EPA+DHA combination did not reduce MACE (RR, 0.99; P = .48). This effect was consistent for revascularization.

A total of eight trials with 65,404 individuals reported 935 nonfatal strokes, and eight trials with 51,336 individuals reported 1,572 events of atrial fibrillation (AFib).

Omega-3 fatty acids did not significantly reduce nonfatal stroke (RR, 1.04; P = .55), but EPA monotherapy was associated with a reduction of nonfatal stroke, compared with control (RR: 0.71; P = .01).

Conversely, omega-3 fatty acids were associated with increased risk for AFib (RR, 1.26; P = .004), with a higher risk with EPA monotherapy than with control (RR, 1.35; P = .004).

Overall, omega-3 fatty acids did not prevent sudden cardiac death or increase gastrointestinal-related adverse events, total bleeding, or major or minor bleeding; however, the meta-analysis showed a higher risk of total bleeding with EPA monotherapy than with control (RR, 1.49; P = .006).

An influence analysis with stepwise exclusion of one trial at a time, including REDUCE-IT, did not alter the overall summary estimates. “Despite the exclusion of REDUCE-IT, EPA monotherapy reduced MACE by 23%, compared with the control,” the authors reported.

They said these new findings also have important implications for clinical practice and treatment guidelines.

“After REDUCE-IT, several national and international guidelines endorsed EPA in their therapeutic recommendations. However, the publication of two recent negative trials of EPA + DHA has created some confusion in the scientific community about the value of omega-3 FAs in preventing atherosclerotic cardiovascular disease [ASCVD],” they stated.

“This meta-analysis provides reassurance about the role of omega-3 fatty acids, specifically EPA, in the current treatment framework of ASCVD residual cardiovascular risk reduction and encourages investigators to explore further the cardiovascular effects of EPA across different clinical settings,” they added.

REDUCE-IT was sponsored by Amarin. Brigham and Women’s Hospital receives research funding from Amarin for the work Dr. Bhatt did as the trial chair and as the international principal investigator. The present analysis was unfunded.

A version of this article first appeared on Medscape.com.

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Healthy weight gain in pregnancy: What the USPSTF recommends

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REFERENCES

  1. US Preventive Services Task Force. Behavioral counseling interventions for healthy weight and weight gain in pregnancy: US Preventive Services Task Force recommendation statement. JAMA. 2021;325:2087-2092. doi:10.1001/jama.2021.6949
  2. Rasmussen KM, Yaktine AL, eds. Weight Gain During Pregnancy: Reexamining the Guidelines. National Academies Press; 2009. doi: 10.17226/12584
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Doug Campos-Outcalt, MD, MPA, is a clinical professor at the University of Arizona College of Medicine, a senior lecturer with the University of Arizona College of Public Health, and a member of the US Community Preventive Services Task Force. He’s also an assistant editor at The Journal of Family Practice.

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Doug Campos-Outcalt, MD, MPA, is a clinical professor at the University of Arizona College of Medicine, a senior lecturer with the University of Arizona College of Public Health, and a member of the US Community Preventive Services Task Force. He’s also an assistant editor at The Journal of Family Practice.

The speaker reported no potential conflict of interest relevant to this audiocast.

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Doug Campos-Outcalt, MD, MPA, is a clinical professor at the University of Arizona College of Medicine, a senior lecturer with the University of Arizona College of Public Health, and a member of the US Community Preventive Services Task Force. He’s also an assistant editor at The Journal of Family Practice.

The speaker reported no potential conflict of interest relevant to this audiocast.

REFERENCES

  1. US Preventive Services Task Force. Behavioral counseling interventions for healthy weight and weight gain in pregnancy: US Preventive Services Task Force recommendation statement. JAMA. 2021;325:2087-2092. doi:10.1001/jama.2021.6949
  2. Rasmussen KM, Yaktine AL, eds. Weight Gain During Pregnancy: Reexamining the Guidelines. National Academies Press; 2009. doi: 10.17226/12584

REFERENCES

  1. US Preventive Services Task Force. Behavioral counseling interventions for healthy weight and weight gain in pregnancy: US Preventive Services Task Force recommendation statement. JAMA. 2021;325:2087-2092. doi:10.1001/jama.2021.6949
  2. Rasmussen KM, Yaktine AL, eds. Weight Gain During Pregnancy: Reexamining the Guidelines. National Academies Press; 2009. doi: 10.17226/12584
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AGA Clinical Practice Update: Early complications after bariatric/metabolic surgery

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The American Gastroenterological Association recently published a clinical practice update concerning endoscopic evaluation and management of early complications after bariatric/metabolic surgery.

The seven best practice advice statements, based on available evidence and expert opinion, range from a general call for high familiarity with available interventions to specific approaches for managing postoperative leaks.

According to lead author Vivek Kumbhari, MD, PhD, director of advanced endoscopy, department of gastroenterology and hepatology, Mayo Clinic, Jacksonville, Fla., and colleagues, the update was written in consideration of increasing rates of bariatric/metabolic surgery.

“Bariatric/metabolic surgery is unmatched with respect to its weight loss and metabolic benefits,” the investigators wrote in Clinical Gastroenterology and Hepatology. “The selection criteria will continue to broaden, likely resulting in increasing numbers of less robust patients undergoing surgery (e.g., children, elderly, and those with significant cardiorespiratory comorbidities).”

Although the 90-day overall complication rate across all patients undergoing bariatric/metabolic surgery is only 4%, Dr. Kumbhari and colleagues noted that this rate is considerably higher, at 20.1%, among patients aged older than 65 years.

“As utilization escalates, so will the number of patients who suffer early complications,” they wrote.

The first three items of best practice advice describe who should be managing complications after bariatric/metabolic surgery, and how.

Foremost, Dr. Kumbhari and colleagues called for a multidisciplinary approach; they suggested that endoscopists should work closely with related specialists, such as bariatric/metabolic surgeons and interventional radiologists.

“Timely communication between the endoscopist, radiologist, surgeon, nutritionists, and inpatient medical team or primary care physician will result in efficient, effective care with prompt escalation and deescalation,” they wrote. “Daily communication is advised.”

The next two best practice advice statements encourage high familiarity with endoscopic treatments, postsurgical anatomy, interventional radiology, and surgical interventions, including risks and benefits of each approach.

“The endoscopist should ... have expertise in interventional endoscopy techniques, including but not limited to using concomitant fluoroscopy, stent deployment and retrieval, pneumatic balloon dilation, incisional therapies, endoscopic suturing, and managing percutaneous drains,” the investigators wrote. “Having the ability to perform a wide array of therapies will enhance the likelihood that the optimal endoscopic strategy will be employed, as opposed to simply performing a technique with which the endoscopist has experience.”

Following these best practices, Dr. Kumbhari and colleagues advised screening patients with postoperative complications for comorbidities, both medical in nature (such as infection) and psychological.

“Patients often have higher depression and anxiety scores, as well as a lower physical quality of life, and medical teams sometimes neglect the patient’s psychological state,” they wrote. “It is imperative that the multidisciplinary team recognize and acknowledge the patient’s psychological comorbidities and engage expertise to manage them.”

Next, the investigators advised that endoscopic intervention should be considered regardless of time interval since surgery, including the immediate postoperative period.

“Endoscopy is often indicated as the initial therapeutic modality, and it can safely be performed,” Dr. Kumbhari and colleagues wrote. “When endoscopy is performed, it is advised to use carbon dioxide for insufflation. Caution should be used when advancing the endoscope into the small bowel, as it is best to minimize pressure along the fresh staple lines. In cases in which the patient is critically ill or the interventional endoscopist does not have extensive experience with such a scenario, the endoscopy should be performed in the operating room with a surgeon present (preferably the surgeon who performed the operation).”

Dr. Kumbhari and colleagues discussed functional stenosis, which can precipitate and propagate leaks. They noted that “downstream stenosis is frequently seen at the level of the incisura angularis or in the proximal stomach when a sleeve gastrectomy is performed in a patient with a prior laparoscopic adjustable gastric band.”

To address stenosis, the update calls for “aggressive dilation” using a large pneumatic balloon, preferably with fluoroscopy to make sure the distal end of the balloon does not cross the pylorus. The investigators noted that endoscopic suturing may be needed if a tear involving the muscularis propria is encountered.

Lastly, the clinical practice update offers comprehensive guidance for managing staple-line leaks, which “most commonly occur along the staple line of the proximal stomach.”

As leaks are thought to stem from ischemia, “most leaks are not present upon completion of the operation, and they develop over the subsequent weeks, often in the setting of downstream stenosis,” the investigators wrote.

To guide management of staple-line leaks, the investigators presented a treatment algorithm that incorporates defect size, time since surgery, and presence or absence of stenosis.

For example, a defect smaller than 10 mm occurring within 6 weeks of surgery and lacking stenosis may be managed with a percutaneous drain and diversion. In contrast, a defect of similar size, also without stenosis, but occurring later than 6 weeks after the initial procedure, should be managed with endoscopic internal drainage or vacuum therapy.

“Clinicians should recognize that the goal for endoscopic management of staple-line leaks is often not necessarily initial closure of the leak site, but rather techniques to promote drainage of material from the perigastric collection into the gastric lumen such that the leak site closes by secondary intention,” wrote Dr. Kumbhari and colleagues.

The clinical practice update was commissioned and approved by the AGA Institute Clinical Practice Updates Committee and the AGA Governing Board. The investigators disclosed relationships with Boston Scientific, Medtronic, Apollo Endosurgery, and others.

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The American Gastroenterological Association recently published a clinical practice update concerning endoscopic evaluation and management of early complications after bariatric/metabolic surgery.

The seven best practice advice statements, based on available evidence and expert opinion, range from a general call for high familiarity with available interventions to specific approaches for managing postoperative leaks.

According to lead author Vivek Kumbhari, MD, PhD, director of advanced endoscopy, department of gastroenterology and hepatology, Mayo Clinic, Jacksonville, Fla., and colleagues, the update was written in consideration of increasing rates of bariatric/metabolic surgery.

“Bariatric/metabolic surgery is unmatched with respect to its weight loss and metabolic benefits,” the investigators wrote in Clinical Gastroenterology and Hepatology. “The selection criteria will continue to broaden, likely resulting in increasing numbers of less robust patients undergoing surgery (e.g., children, elderly, and those with significant cardiorespiratory comorbidities).”

Although the 90-day overall complication rate across all patients undergoing bariatric/metabolic surgery is only 4%, Dr. Kumbhari and colleagues noted that this rate is considerably higher, at 20.1%, among patients aged older than 65 years.

“As utilization escalates, so will the number of patients who suffer early complications,” they wrote.

The first three items of best practice advice describe who should be managing complications after bariatric/metabolic surgery, and how.

Foremost, Dr. Kumbhari and colleagues called for a multidisciplinary approach; they suggested that endoscopists should work closely with related specialists, such as bariatric/metabolic surgeons and interventional radiologists.

“Timely communication between the endoscopist, radiologist, surgeon, nutritionists, and inpatient medical team or primary care physician will result in efficient, effective care with prompt escalation and deescalation,” they wrote. “Daily communication is advised.”

The next two best practice advice statements encourage high familiarity with endoscopic treatments, postsurgical anatomy, interventional radiology, and surgical interventions, including risks and benefits of each approach.

“The endoscopist should ... have expertise in interventional endoscopy techniques, including but not limited to using concomitant fluoroscopy, stent deployment and retrieval, pneumatic balloon dilation, incisional therapies, endoscopic suturing, and managing percutaneous drains,” the investigators wrote. “Having the ability to perform a wide array of therapies will enhance the likelihood that the optimal endoscopic strategy will be employed, as opposed to simply performing a technique with which the endoscopist has experience.”

Following these best practices, Dr. Kumbhari and colleagues advised screening patients with postoperative complications for comorbidities, both medical in nature (such as infection) and psychological.

“Patients often have higher depression and anxiety scores, as well as a lower physical quality of life, and medical teams sometimes neglect the patient’s psychological state,” they wrote. “It is imperative that the multidisciplinary team recognize and acknowledge the patient’s psychological comorbidities and engage expertise to manage them.”

Next, the investigators advised that endoscopic intervention should be considered regardless of time interval since surgery, including the immediate postoperative period.

“Endoscopy is often indicated as the initial therapeutic modality, and it can safely be performed,” Dr. Kumbhari and colleagues wrote. “When endoscopy is performed, it is advised to use carbon dioxide for insufflation. Caution should be used when advancing the endoscope into the small bowel, as it is best to minimize pressure along the fresh staple lines. In cases in which the patient is critically ill or the interventional endoscopist does not have extensive experience with such a scenario, the endoscopy should be performed in the operating room with a surgeon present (preferably the surgeon who performed the operation).”

Dr. Kumbhari and colleagues discussed functional stenosis, which can precipitate and propagate leaks. They noted that “downstream stenosis is frequently seen at the level of the incisura angularis or in the proximal stomach when a sleeve gastrectomy is performed in a patient with a prior laparoscopic adjustable gastric band.”

To address stenosis, the update calls for “aggressive dilation” using a large pneumatic balloon, preferably with fluoroscopy to make sure the distal end of the balloon does not cross the pylorus. The investigators noted that endoscopic suturing may be needed if a tear involving the muscularis propria is encountered.

Lastly, the clinical practice update offers comprehensive guidance for managing staple-line leaks, which “most commonly occur along the staple line of the proximal stomach.”

As leaks are thought to stem from ischemia, “most leaks are not present upon completion of the operation, and they develop over the subsequent weeks, often in the setting of downstream stenosis,” the investigators wrote.

To guide management of staple-line leaks, the investigators presented a treatment algorithm that incorporates defect size, time since surgery, and presence or absence of stenosis.

For example, a defect smaller than 10 mm occurring within 6 weeks of surgery and lacking stenosis may be managed with a percutaneous drain and diversion. In contrast, a defect of similar size, also without stenosis, but occurring later than 6 weeks after the initial procedure, should be managed with endoscopic internal drainage or vacuum therapy.

“Clinicians should recognize that the goal for endoscopic management of staple-line leaks is often not necessarily initial closure of the leak site, but rather techniques to promote drainage of material from the perigastric collection into the gastric lumen such that the leak site closes by secondary intention,” wrote Dr. Kumbhari and colleagues.

The clinical practice update was commissioned and approved by the AGA Institute Clinical Practice Updates Committee and the AGA Governing Board. The investigators disclosed relationships with Boston Scientific, Medtronic, Apollo Endosurgery, and others.

 

The American Gastroenterological Association recently published a clinical practice update concerning endoscopic evaluation and management of early complications after bariatric/metabolic surgery.

The seven best practice advice statements, based on available evidence and expert opinion, range from a general call for high familiarity with available interventions to specific approaches for managing postoperative leaks.

According to lead author Vivek Kumbhari, MD, PhD, director of advanced endoscopy, department of gastroenterology and hepatology, Mayo Clinic, Jacksonville, Fla., and colleagues, the update was written in consideration of increasing rates of bariatric/metabolic surgery.

“Bariatric/metabolic surgery is unmatched with respect to its weight loss and metabolic benefits,” the investigators wrote in Clinical Gastroenterology and Hepatology. “The selection criteria will continue to broaden, likely resulting in increasing numbers of less robust patients undergoing surgery (e.g., children, elderly, and those with significant cardiorespiratory comorbidities).”

Although the 90-day overall complication rate across all patients undergoing bariatric/metabolic surgery is only 4%, Dr. Kumbhari and colleagues noted that this rate is considerably higher, at 20.1%, among patients aged older than 65 years.

“As utilization escalates, so will the number of patients who suffer early complications,” they wrote.

The first three items of best practice advice describe who should be managing complications after bariatric/metabolic surgery, and how.

Foremost, Dr. Kumbhari and colleagues called for a multidisciplinary approach; they suggested that endoscopists should work closely with related specialists, such as bariatric/metabolic surgeons and interventional radiologists.

“Timely communication between the endoscopist, radiologist, surgeon, nutritionists, and inpatient medical team or primary care physician will result in efficient, effective care with prompt escalation and deescalation,” they wrote. “Daily communication is advised.”

The next two best practice advice statements encourage high familiarity with endoscopic treatments, postsurgical anatomy, interventional radiology, and surgical interventions, including risks and benefits of each approach.

“The endoscopist should ... have expertise in interventional endoscopy techniques, including but not limited to using concomitant fluoroscopy, stent deployment and retrieval, pneumatic balloon dilation, incisional therapies, endoscopic suturing, and managing percutaneous drains,” the investigators wrote. “Having the ability to perform a wide array of therapies will enhance the likelihood that the optimal endoscopic strategy will be employed, as opposed to simply performing a technique with which the endoscopist has experience.”

Following these best practices, Dr. Kumbhari and colleagues advised screening patients with postoperative complications for comorbidities, both medical in nature (such as infection) and psychological.

“Patients often have higher depression and anxiety scores, as well as a lower physical quality of life, and medical teams sometimes neglect the patient’s psychological state,” they wrote. “It is imperative that the multidisciplinary team recognize and acknowledge the patient’s psychological comorbidities and engage expertise to manage them.”

Next, the investigators advised that endoscopic intervention should be considered regardless of time interval since surgery, including the immediate postoperative period.

“Endoscopy is often indicated as the initial therapeutic modality, and it can safely be performed,” Dr. Kumbhari and colleagues wrote. “When endoscopy is performed, it is advised to use carbon dioxide for insufflation. Caution should be used when advancing the endoscope into the small bowel, as it is best to minimize pressure along the fresh staple lines. In cases in which the patient is critically ill or the interventional endoscopist does not have extensive experience with such a scenario, the endoscopy should be performed in the operating room with a surgeon present (preferably the surgeon who performed the operation).”

Dr. Kumbhari and colleagues discussed functional stenosis, which can precipitate and propagate leaks. They noted that “downstream stenosis is frequently seen at the level of the incisura angularis or in the proximal stomach when a sleeve gastrectomy is performed in a patient with a prior laparoscopic adjustable gastric band.”

To address stenosis, the update calls for “aggressive dilation” using a large pneumatic balloon, preferably with fluoroscopy to make sure the distal end of the balloon does not cross the pylorus. The investigators noted that endoscopic suturing may be needed if a tear involving the muscularis propria is encountered.

Lastly, the clinical practice update offers comprehensive guidance for managing staple-line leaks, which “most commonly occur along the staple line of the proximal stomach.”

As leaks are thought to stem from ischemia, “most leaks are not present upon completion of the operation, and they develop over the subsequent weeks, often in the setting of downstream stenosis,” the investigators wrote.

To guide management of staple-line leaks, the investigators presented a treatment algorithm that incorporates defect size, time since surgery, and presence or absence of stenosis.

For example, a defect smaller than 10 mm occurring within 6 weeks of surgery and lacking stenosis may be managed with a percutaneous drain and diversion. In contrast, a defect of similar size, also without stenosis, but occurring later than 6 weeks after the initial procedure, should be managed with endoscopic internal drainage or vacuum therapy.

“Clinicians should recognize that the goal for endoscopic management of staple-line leaks is often not necessarily initial closure of the leak site, but rather techniques to promote drainage of material from the perigastric collection into the gastric lumen such that the leak site closes by secondary intention,” wrote Dr. Kumbhari and colleagues.

The clinical practice update was commissioned and approved by the AGA Institute Clinical Practice Updates Committee and the AGA Governing Board. The investigators disclosed relationships with Boston Scientific, Medtronic, Apollo Endosurgery, and others.

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Obesity hypoventilation: Moving the needle on underrecognition

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Obesity hypoventilation syndrome (OHS) is bound to be increasing because of the rising obesity epidemic but is underrecognized and “frequently underdiagnosed,” Saiprakash B. Venkateshiah, MD, said at the virtual annual meeting of the Associated Professional Sleep Societies.

The condition, which can cause significant morbidity and mortality, is defined by the combination of obesity and awake alveolar hypoventilation (PaCO2 ≥45 mm Hg), with the exclusion of alternate causes of hypoventilation. Sleep-disordered breathing (SDB) is almost universally present, with approximately 90% of individuals with OHS also having obstructive sleep apnea (OSA), most often severe, and approximately 10% having sleep-related hypoventilation, or a “pure hypoventilation subtype, if you will,” said Dr. Venkateshiah, assistant professor of medicine at Emory University, Atlanta.

The prevalence of OHS in the general population is unknown, but its prevalence in patients who present for the evaluation of SDB has ranged from 8%-20% across multiple studies, he said. Up to 40% of patients with OHS present for the first time with acute hypercapnic respiratory failure, which has an in-hospital mortality of 18%.

Postmenopausal women appear to have a higher prevalence, compared with premenopausal women and men, he noted, and women appear to be more likely than men to present with the clinical phenotype of OHS without associated OSA.

The arterial blood gas measurement needed to document alveolar hypoventilation and definitively diagnosis OHA is a “simple and economical test,” he said, “but it is logistically very difficult to obtain [these measurements] routinely in all patients in the clinic ... and is one of the reasons why OSH is underdiagnosed.”
 

Guideline advice

A practice guideline published in 2019 by the American Thoracic Society suggests that, for obese patients with SDB and a low to moderate probability of having OSH, a serum bicarbonate level be measured first. “In patients with serum bicarbonate less than 27 mmol/L, clinicians might forgo measuring PaCO2, as the diagnosis in them is very unlikely,” Dr. Venkateshiah said, referring to the guideline. “In patients with a serum bicarbonate greater than 27, you might need to measure PaCO2 to confirm or rule out the diagnosis of OHS.”

(Patients strongly suspected of having OHS, with more than a low to moderate probability – those in whom arterial blood gases should be measured – are “usually severely obese with typical signs and symptoms such as dyspnea, nocturia, lower-extremity edema, excessive daytime sleepiness, fatigue, loud disruptive snoring, witnessed apneas, as well as mild hypoxemia during wake and/or significant hypoxemia during sleep,” the ATS guideline says.)

The guideline panel considered the use of oxygen saturation measured with pulse oximetry during wakefulness to screen for OHS and decided to advise against it because of the paucity of evidence-based literature, Dr. Venkateshiah noted. (In making its five conditional recommendations, the guideline panel cited an overall very low quality of evidence.)

Symptoms of OHS overlap with those of OSA (for example, daytime hypersomnolence, witnessed apneas, loud snoring, and morning headaches), so “symptoms alone cannot be used to discriminate between the two disorders,” he advised. Signs of OHS commonly seen in clinical exams, however, are low resting daytime oxygen saturations and lower-extremity edema. A sleep study, he added, is needed to document and characterize SDB in patients with OHS.

Positive airway pressure therapy is the first-line treatment for OHS, and long-term outcomes of patients with OHS on PAP treatment are significantly better, compared with untreated individuals. There is no strong evidence to recommend one form of PAP therapy over another for patients with OHS and concomitant severe OSA, he said, but “the bottom line” from both short- and long-term randomized clinical trials comparing CPAP with noninvasive ventilation “is that CPAP is equivalent to noninvasive ventilation as far as outcomes are concerned.”

The ATS guideline panel recommends continuous positive airway pressure therapy for patients with OHS and severe OSA. And for OHS with nonsevere OSA, bilevel PAP is traditionally used – including pure hypoventilators, Dr. Venkateshiah said.

Weight-loss interventions are paramount, since “the primary driver of OHS is obesity,” he said at the meeting. There are only a few studies that have looked at bariatric surgery in patients with OHS, he said, “but they did note significant improvements in gas exchange, sleep apnea, lung volumes and pulmonary hypertension.”

The ATS guideline suggests weight-loss interventions that produce sustained weight loss of 25%-30% of the actual body weight. Such interventions are “most likely required to achieve resolution of hypoventilation,” Dr. Venkateshiah said.
 

OHS vs. COPD

In a separate presentation on OHS, Michelle Cao, DO, clinical associate professor at Stanford (Calif.) University, emphasized the importance of distinguishing the patient with OHS from the patient with hypercapnic chronic obstructive pulmonary disease (COPD). Spirometry and the flow volume curve can help rule out hypercapnic COPD and other conditions that cause daytime hypoventilation.

A study published in 2016 of 600 hospitalized patients determined to have unequivocal OHS found that 43% had been misdiagnosed as having COPD and none had been previously diagnosed with OHS, Dr. Cao noted. Patients in the study had a mean age of 58 and a mean body mass index of 48.2 kg/m2; 64% were women.

Dr. Venkateshiah and Dr. Cao had no relevant disclosures.

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Obesity hypoventilation syndrome (OHS) is bound to be increasing because of the rising obesity epidemic but is underrecognized and “frequently underdiagnosed,” Saiprakash B. Venkateshiah, MD, said at the virtual annual meeting of the Associated Professional Sleep Societies.

The condition, which can cause significant morbidity and mortality, is defined by the combination of obesity and awake alveolar hypoventilation (PaCO2 ≥45 mm Hg), with the exclusion of alternate causes of hypoventilation. Sleep-disordered breathing (SDB) is almost universally present, with approximately 90% of individuals with OHS also having obstructive sleep apnea (OSA), most often severe, and approximately 10% having sleep-related hypoventilation, or a “pure hypoventilation subtype, if you will,” said Dr. Venkateshiah, assistant professor of medicine at Emory University, Atlanta.

The prevalence of OHS in the general population is unknown, but its prevalence in patients who present for the evaluation of SDB has ranged from 8%-20% across multiple studies, he said. Up to 40% of patients with OHS present for the first time with acute hypercapnic respiratory failure, which has an in-hospital mortality of 18%.

Postmenopausal women appear to have a higher prevalence, compared with premenopausal women and men, he noted, and women appear to be more likely than men to present with the clinical phenotype of OHS without associated OSA.

The arterial blood gas measurement needed to document alveolar hypoventilation and definitively diagnosis OHA is a “simple and economical test,” he said, “but it is logistically very difficult to obtain [these measurements] routinely in all patients in the clinic ... and is one of the reasons why OSH is underdiagnosed.”
 

Guideline advice

A practice guideline published in 2019 by the American Thoracic Society suggests that, for obese patients with SDB and a low to moderate probability of having OSH, a serum bicarbonate level be measured first. “In patients with serum bicarbonate less than 27 mmol/L, clinicians might forgo measuring PaCO2, as the diagnosis in them is very unlikely,” Dr. Venkateshiah said, referring to the guideline. “In patients with a serum bicarbonate greater than 27, you might need to measure PaCO2 to confirm or rule out the diagnosis of OHS.”

(Patients strongly suspected of having OHS, with more than a low to moderate probability – those in whom arterial blood gases should be measured – are “usually severely obese with typical signs and symptoms such as dyspnea, nocturia, lower-extremity edema, excessive daytime sleepiness, fatigue, loud disruptive snoring, witnessed apneas, as well as mild hypoxemia during wake and/or significant hypoxemia during sleep,” the ATS guideline says.)

The guideline panel considered the use of oxygen saturation measured with pulse oximetry during wakefulness to screen for OHS and decided to advise against it because of the paucity of evidence-based literature, Dr. Venkateshiah noted. (In making its five conditional recommendations, the guideline panel cited an overall very low quality of evidence.)

Symptoms of OHS overlap with those of OSA (for example, daytime hypersomnolence, witnessed apneas, loud snoring, and morning headaches), so “symptoms alone cannot be used to discriminate between the two disorders,” he advised. Signs of OHS commonly seen in clinical exams, however, are low resting daytime oxygen saturations and lower-extremity edema. A sleep study, he added, is needed to document and characterize SDB in patients with OHS.

Positive airway pressure therapy is the first-line treatment for OHS, and long-term outcomes of patients with OHS on PAP treatment are significantly better, compared with untreated individuals. There is no strong evidence to recommend one form of PAP therapy over another for patients with OHS and concomitant severe OSA, he said, but “the bottom line” from both short- and long-term randomized clinical trials comparing CPAP with noninvasive ventilation “is that CPAP is equivalent to noninvasive ventilation as far as outcomes are concerned.”

The ATS guideline panel recommends continuous positive airway pressure therapy for patients with OHS and severe OSA. And for OHS with nonsevere OSA, bilevel PAP is traditionally used – including pure hypoventilators, Dr. Venkateshiah said.

Weight-loss interventions are paramount, since “the primary driver of OHS is obesity,” he said at the meeting. There are only a few studies that have looked at bariatric surgery in patients with OHS, he said, “but they did note significant improvements in gas exchange, sleep apnea, lung volumes and pulmonary hypertension.”

The ATS guideline suggests weight-loss interventions that produce sustained weight loss of 25%-30% of the actual body weight. Such interventions are “most likely required to achieve resolution of hypoventilation,” Dr. Venkateshiah said.
 

OHS vs. COPD

In a separate presentation on OHS, Michelle Cao, DO, clinical associate professor at Stanford (Calif.) University, emphasized the importance of distinguishing the patient with OHS from the patient with hypercapnic chronic obstructive pulmonary disease (COPD). Spirometry and the flow volume curve can help rule out hypercapnic COPD and other conditions that cause daytime hypoventilation.

A study published in 2016 of 600 hospitalized patients determined to have unequivocal OHS found that 43% had been misdiagnosed as having COPD and none had been previously diagnosed with OHS, Dr. Cao noted. Patients in the study had a mean age of 58 and a mean body mass index of 48.2 kg/m2; 64% were women.

Dr. Venkateshiah and Dr. Cao had no relevant disclosures.

 

Obesity hypoventilation syndrome (OHS) is bound to be increasing because of the rising obesity epidemic but is underrecognized and “frequently underdiagnosed,” Saiprakash B. Venkateshiah, MD, said at the virtual annual meeting of the Associated Professional Sleep Societies.

The condition, which can cause significant morbidity and mortality, is defined by the combination of obesity and awake alveolar hypoventilation (PaCO2 ≥45 mm Hg), with the exclusion of alternate causes of hypoventilation. Sleep-disordered breathing (SDB) is almost universally present, with approximately 90% of individuals with OHS also having obstructive sleep apnea (OSA), most often severe, and approximately 10% having sleep-related hypoventilation, or a “pure hypoventilation subtype, if you will,” said Dr. Venkateshiah, assistant professor of medicine at Emory University, Atlanta.

The prevalence of OHS in the general population is unknown, but its prevalence in patients who present for the evaluation of SDB has ranged from 8%-20% across multiple studies, he said. Up to 40% of patients with OHS present for the first time with acute hypercapnic respiratory failure, which has an in-hospital mortality of 18%.

Postmenopausal women appear to have a higher prevalence, compared with premenopausal women and men, he noted, and women appear to be more likely than men to present with the clinical phenotype of OHS without associated OSA.

The arterial blood gas measurement needed to document alveolar hypoventilation and definitively diagnosis OHA is a “simple and economical test,” he said, “but it is logistically very difficult to obtain [these measurements] routinely in all patients in the clinic ... and is one of the reasons why OSH is underdiagnosed.”
 

Guideline advice

A practice guideline published in 2019 by the American Thoracic Society suggests that, for obese patients with SDB and a low to moderate probability of having OSH, a serum bicarbonate level be measured first. “In patients with serum bicarbonate less than 27 mmol/L, clinicians might forgo measuring PaCO2, as the diagnosis in them is very unlikely,” Dr. Venkateshiah said, referring to the guideline. “In patients with a serum bicarbonate greater than 27, you might need to measure PaCO2 to confirm or rule out the diagnosis of OHS.”

(Patients strongly suspected of having OHS, with more than a low to moderate probability – those in whom arterial blood gases should be measured – are “usually severely obese with typical signs and symptoms such as dyspnea, nocturia, lower-extremity edema, excessive daytime sleepiness, fatigue, loud disruptive snoring, witnessed apneas, as well as mild hypoxemia during wake and/or significant hypoxemia during sleep,” the ATS guideline says.)

The guideline panel considered the use of oxygen saturation measured with pulse oximetry during wakefulness to screen for OHS and decided to advise against it because of the paucity of evidence-based literature, Dr. Venkateshiah noted. (In making its five conditional recommendations, the guideline panel cited an overall very low quality of evidence.)

Symptoms of OHS overlap with those of OSA (for example, daytime hypersomnolence, witnessed apneas, loud snoring, and morning headaches), so “symptoms alone cannot be used to discriminate between the two disorders,” he advised. Signs of OHS commonly seen in clinical exams, however, are low resting daytime oxygen saturations and lower-extremity edema. A sleep study, he added, is needed to document and characterize SDB in patients with OHS.

Positive airway pressure therapy is the first-line treatment for OHS, and long-term outcomes of patients with OHS on PAP treatment are significantly better, compared with untreated individuals. There is no strong evidence to recommend one form of PAP therapy over another for patients with OHS and concomitant severe OSA, he said, but “the bottom line” from both short- and long-term randomized clinical trials comparing CPAP with noninvasive ventilation “is that CPAP is equivalent to noninvasive ventilation as far as outcomes are concerned.”

The ATS guideline panel recommends continuous positive airway pressure therapy for patients with OHS and severe OSA. And for OHS with nonsevere OSA, bilevel PAP is traditionally used – including pure hypoventilators, Dr. Venkateshiah said.

Weight-loss interventions are paramount, since “the primary driver of OHS is obesity,” he said at the meeting. There are only a few studies that have looked at bariatric surgery in patients with OHS, he said, “but they did note significant improvements in gas exchange, sleep apnea, lung volumes and pulmonary hypertension.”

The ATS guideline suggests weight-loss interventions that produce sustained weight loss of 25%-30% of the actual body weight. Such interventions are “most likely required to achieve resolution of hypoventilation,” Dr. Venkateshiah said.
 

OHS vs. COPD

In a separate presentation on OHS, Michelle Cao, DO, clinical associate professor at Stanford (Calif.) University, emphasized the importance of distinguishing the patient with OHS from the patient with hypercapnic chronic obstructive pulmonary disease (COPD). Spirometry and the flow volume curve can help rule out hypercapnic COPD and other conditions that cause daytime hypoventilation.

A study published in 2016 of 600 hospitalized patients determined to have unequivocal OHS found that 43% had been misdiagnosed as having COPD and none had been previously diagnosed with OHS, Dr. Cao noted. Patients in the study had a mean age of 58 and a mean body mass index of 48.2 kg/m2; 64% were women.

Dr. Venkateshiah and Dr. Cao had no relevant disclosures.

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Semaglutide 2.4 mg ‘likely to usher in a new era’ in obesity treatment

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Tue, 05/03/2022 - 15:05

The recently licensed weight-loss drug semaglutide 2.4 mg/week (Wegovy, Novo Nordisk) “is likely to usher in a new era in the medical treatment of obesity,” Lee M. Kaplan, MD, PhD, stated at the annual scientific sessions of the American Diabetes Association, held virtually.

Dr. Lee M. Kaplan

Dr. Kaplan discussed the clinical implications of caring for patients with obesity now that the glucagon-like peptide-1 (GLP-1) receptor agonist is approved in the United States for weight loss.

Weight loss with semaglutide 2.4 mg was twice that achieved with liraglutide 3 mg (Saxenda, Novo Nordisk) – that is, roughly a 10%-15% weight loss at 68 weeks, said Dr. Kaplan, who was not involved in the pivotal STEP clinical trials of the agent.  

“I think as we start to see more data come in over the next couple of years,” including from the cardiovascular outcome trial SELECT, he continued, “we’ll be able to use the data to create a nuanced [individualized patient treatment] approach, but we’ll also be able to use our clinical experience, which will grow rapidly over the next few years.”

In the future, semaglutide is likely to be combined with other drugs to provide even greater weight loss, predicts Dr. Kaplan, director of the Obesity, Metabolism, and Nutrition Institute at Massachusetts General Hospital in Boston.

In the meantime, “to be effective, semaglutide needs to be used,” he stressed, while noting that responses to the drug vary by individual, and so this will need to be taken into account.

“Obesity needs to be recognized as a disease in its own right, as well as a risk factor for numerous other diseases, [and] equitable access to obesity treatment needs to be broadened,” he emphasized.
 

Four pivotal phase 3 trials

As previously reported, four pivotal 68-week, phase 3 clinical trials in the Semaglutide Treatment Effect in People With Obesity (STEP) program tested the safety and efficacy of subcutaneous semaglutide 2.4 mg/week in more than 4,500 adults with overweight or obesity.

The trials have been published in high profile journals – the New England Journal of Medicine (STEP 1), The Lancet (STEP 2), and JAMA (STEP 3 and STEP 4) – said Robert F. Kushner, MD.

“I would encourage all of you to download and read each of these trials on your own,” Dr. Kushner, professor of medicine and medicine education at Northwestern University, Chicago, and coauthor of STEP 1, said before presenting a top-level review of key results.

STEP 1 examined weight management, STEP 3 added a background of intensive behavioral therapy, STEP 4 investigated sustained weight management, and STEP 2 (unlike the others) investigated weight management in patients with type 2 diabetes, he summarized.

In STEP 1, patients who received semaglutide had an average 15% weight loss, and those who stayed on the drug had a 17% weight loss, compared with the 2.4% weight loss in the placebo group.

“One-third of individuals in the trial achieved at least a 20% weight loss or more,” Dr. Kushner said, which is “really phenomenal.”

The results of STEP 3 “suggest that semaglutide with monthly brief lifestyle counseling alone is sufficient to produce a mean weight loss of 15%,” he noted, as adding a low-calorie diet and intensive behavior therapy sped up the initial weight loss but did not increase the final weight loss.

A post hoc analysis of STEP 2 showed “it’s clear that improvement in A1c” is greater with at least a 10% weight loss versus a smaller weight loss, Dr. Kushner said. A1c dropped by 2.2% versus 1.3%, with these two weight losses, respectively.

In STEP 4, after dose escalation to 2.4 mg at 20 weeks, patients had lost 10.6% of their initial weight. At 68 weeks, those who were switched to placebo at 20 weeks had lost 5.4% of their initial weight, whereas those who remained on semaglutide had lost 17.7% of their initial weight.

This shows that “if you remove the drug, the disease starts to come back,” Dr. Kushner pointed out.

Nausea, the most common side effect, occurred in 20% of patients, but was mostly mild or moderate, and gastrointestinal effects including constipation, vomiting, and diarrhea were transient and occurred early in the dose escalation phase.
 

 

 

Large individual variability, combination therapies on horizon

Dr. Kaplan pointed out, however, that “like [with] other antiobesity therapies ... there’s a large patient-to-patient variability.”

A third of patients exhibit more than 20% weight loss, and 10% exhibit more than 30% weight loss – approaching the efficacy of bariatric surgery.

However, nearly 10% of patients without diabetes and upwards of 30% of patients with diabetes will experience less than 5% weight loss, he said.

Therefore, “success or failure in one patient doesn’t predict response in another, and we should always remember that as we treat different patients with these medications,” Dr. Kaplan advised.

A recent phase 1b study suggests that combination therapy with semaglutide and the amylin agonist cagrilintide ups weight loss, as previously reported.

In this short trial with no lifestyle modification, it took 16 weeks for patients to reach full dosing, and at 20 weeks, patients on semaglutide had lost 8% of their initial weight, whereas those on combination therapy had lost 17% of their initial weight.

“There’s hope that, in combination with cagrilintide and probably with several other agents that are still in early development, we’ll be seeing average weight loss that is in the range of that seen with bariatric surgery,” Dr. Kushner said.
 

Doctors discuss two hypothetical cases

Session moderator Julio Rosenstock, MD, of the University of Texas, Dallas, a coinvestigator in several of the STEP trials, invited Dr. Kaplan and two other panelists to explain how they would manage two hypothetical patients.

Case 1

You have a patient with type 2 diabetes, a body mass index of 32, 33 kg/m2, and an A1c of 7.5% or 8% on metformin. Would you use semaglutide 1 mg (Ozempic, Novo Nordisk) that is indicated for type 2 diabetes, or would you use semaglutide 2.4 mg that is indicated for obesity and risk factors?

“We have the answer to that from STEP 2,” said Melanie J. Davies, MB ChB, MD, professor of diabetes medicine at the University of Leicester, England, who led the STEP 2 trial.

Sara Freeman/MDedge News
Dr. Melanie J. Davies

“For some patients, the 1-mg dose, which we use routinely in the clinic, may be reasonable to get good glycemic control for cardiovascular protection and will obviously achieve some weight loss. But if you really want to go for the weight-related comorbidities, then the 2.4-mg dose is what you need,” she said.

“A lot of [clinicians] might say: ‘I’ll see how [the patient goes] with the 1-mg dose, and then maybe if they’re not losing the weight and not getting to glycemic target, then maybe I’ll switch to 2.4 mg,’” said John Wilding, MD, who leads clinical research into obesity, diabetes, and endocrinology at the University of Liverpool, England, and led the STEP 1 trial.

“But the STEP 2 data show very clearly that you get almost the same A1c,” Dr. Rosenstock interjected. “I would go for 2.4 mg. The patient has a BMI of 32, 33 kg/m2. I would hit hard the BMI. We need to change that paradigm.”

“For other diseases we don’t always go to the maximum dose that’s available. We go to the dose that’s necessary to achieve the clinical endpoint that we want,” Dr. Kaplan noted. “I think one of the challenges is going to be to learn how to clinically nuance our therapy the way we do for other diseases.”

“That is the usual thinking,” Dr. Rosenstock agreed. But “with the 2.4-mg dose, one third get a 20% reduction of BMI, and 10% get almost a 30% reduction – and you [aren’t] going to see that with semaglutide 1 mg!”

“That’s true,” Dr. Kaplan conceded. However, a patient with a relatively low BMI of 32, 33 kg/m2 may not need the higher dose, unlike a patient who has a BMI of 45 kg/m2 and diabetes. But we’re going to find that out over the next couple of years, he expects.

 

 

Case 2

You have a patient with a BMI of 31 kg/m2 who is newly diagnosed with type 2 diabetes. Why should you start that patient with metformin? Why won’t you start with something that will directly tackle obesity and get the patient to lose 20 pounds and for sure the blood sugar is going to be better?

“I think if I have someone who is really keen to put their diabetes into remission,” Dr. Wilding said, “this would be a fantastic approach because they would have a really high chance of doing that.”

The prediabetes data from STEP showed that “we can put a lot of people from prediabetes back to normal glucose tolerance,” Dr. Wilding noted. “Maybe we can put people with early diabetes back to normal as well. I think that’s a trial that really does need to be done,” he said.

“We’re going to have to figure out the best pathway forward,” Dr. Kaplan observed, noting that multiple stakeholders, including payers, patients, and providers, play a role in the uptake of new obesity drugs.

“Do you think we will see less bariatric surgery with these drugs?” Dr. Rosenstock asked Dr. Kaplan.

“I think you have to remember that of the millions and millions of people with obesity, a very small portion are currently treated with antiobesity medication, and an even smaller portion are getting bariatric surgery,” Dr. Kaplan replied.

“In the United States, 90% of people who get bariatric surgery are self-referred,” he said, so, “I think initially we are not going to see much of a change” in rates of bariatric surgery.

Dr. Rosenstock, Dr. Kaplan, Dr. Wilding, and Dr. Davies disclosed ties with Novo Nordisk and numerous other companies.

A version of this article first appeared on Medscape.com.

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The recently licensed weight-loss drug semaglutide 2.4 mg/week (Wegovy, Novo Nordisk) “is likely to usher in a new era in the medical treatment of obesity,” Lee M. Kaplan, MD, PhD, stated at the annual scientific sessions of the American Diabetes Association, held virtually.

Dr. Lee M. Kaplan

Dr. Kaplan discussed the clinical implications of caring for patients with obesity now that the glucagon-like peptide-1 (GLP-1) receptor agonist is approved in the United States for weight loss.

Weight loss with semaglutide 2.4 mg was twice that achieved with liraglutide 3 mg (Saxenda, Novo Nordisk) – that is, roughly a 10%-15% weight loss at 68 weeks, said Dr. Kaplan, who was not involved in the pivotal STEP clinical trials of the agent.  

“I think as we start to see more data come in over the next couple of years,” including from the cardiovascular outcome trial SELECT, he continued, “we’ll be able to use the data to create a nuanced [individualized patient treatment] approach, but we’ll also be able to use our clinical experience, which will grow rapidly over the next few years.”

In the future, semaglutide is likely to be combined with other drugs to provide even greater weight loss, predicts Dr. Kaplan, director of the Obesity, Metabolism, and Nutrition Institute at Massachusetts General Hospital in Boston.

In the meantime, “to be effective, semaglutide needs to be used,” he stressed, while noting that responses to the drug vary by individual, and so this will need to be taken into account.

“Obesity needs to be recognized as a disease in its own right, as well as a risk factor for numerous other diseases, [and] equitable access to obesity treatment needs to be broadened,” he emphasized.
 

Four pivotal phase 3 trials

As previously reported, four pivotal 68-week, phase 3 clinical trials in the Semaglutide Treatment Effect in People With Obesity (STEP) program tested the safety and efficacy of subcutaneous semaglutide 2.4 mg/week in more than 4,500 adults with overweight or obesity.

The trials have been published in high profile journals – the New England Journal of Medicine (STEP 1), The Lancet (STEP 2), and JAMA (STEP 3 and STEP 4) – said Robert F. Kushner, MD.

“I would encourage all of you to download and read each of these trials on your own,” Dr. Kushner, professor of medicine and medicine education at Northwestern University, Chicago, and coauthor of STEP 1, said before presenting a top-level review of key results.

STEP 1 examined weight management, STEP 3 added a background of intensive behavioral therapy, STEP 4 investigated sustained weight management, and STEP 2 (unlike the others) investigated weight management in patients with type 2 diabetes, he summarized.

In STEP 1, patients who received semaglutide had an average 15% weight loss, and those who stayed on the drug had a 17% weight loss, compared with the 2.4% weight loss in the placebo group.

“One-third of individuals in the trial achieved at least a 20% weight loss or more,” Dr. Kushner said, which is “really phenomenal.”

The results of STEP 3 “suggest that semaglutide with monthly brief lifestyle counseling alone is sufficient to produce a mean weight loss of 15%,” he noted, as adding a low-calorie diet and intensive behavior therapy sped up the initial weight loss but did not increase the final weight loss.

A post hoc analysis of STEP 2 showed “it’s clear that improvement in A1c” is greater with at least a 10% weight loss versus a smaller weight loss, Dr. Kushner said. A1c dropped by 2.2% versus 1.3%, with these two weight losses, respectively.

In STEP 4, after dose escalation to 2.4 mg at 20 weeks, patients had lost 10.6% of their initial weight. At 68 weeks, those who were switched to placebo at 20 weeks had lost 5.4% of their initial weight, whereas those who remained on semaglutide had lost 17.7% of their initial weight.

This shows that “if you remove the drug, the disease starts to come back,” Dr. Kushner pointed out.

Nausea, the most common side effect, occurred in 20% of patients, but was mostly mild or moderate, and gastrointestinal effects including constipation, vomiting, and diarrhea were transient and occurred early in the dose escalation phase.
 

 

 

Large individual variability, combination therapies on horizon

Dr. Kaplan pointed out, however, that “like [with] other antiobesity therapies ... there’s a large patient-to-patient variability.”

A third of patients exhibit more than 20% weight loss, and 10% exhibit more than 30% weight loss – approaching the efficacy of bariatric surgery.

However, nearly 10% of patients without diabetes and upwards of 30% of patients with diabetes will experience less than 5% weight loss, he said.

Therefore, “success or failure in one patient doesn’t predict response in another, and we should always remember that as we treat different patients with these medications,” Dr. Kaplan advised.

A recent phase 1b study suggests that combination therapy with semaglutide and the amylin agonist cagrilintide ups weight loss, as previously reported.

In this short trial with no lifestyle modification, it took 16 weeks for patients to reach full dosing, and at 20 weeks, patients on semaglutide had lost 8% of their initial weight, whereas those on combination therapy had lost 17% of their initial weight.

“There’s hope that, in combination with cagrilintide and probably with several other agents that are still in early development, we’ll be seeing average weight loss that is in the range of that seen with bariatric surgery,” Dr. Kushner said.
 

Doctors discuss two hypothetical cases

Session moderator Julio Rosenstock, MD, of the University of Texas, Dallas, a coinvestigator in several of the STEP trials, invited Dr. Kaplan and two other panelists to explain how they would manage two hypothetical patients.

Case 1

You have a patient with type 2 diabetes, a body mass index of 32, 33 kg/m2, and an A1c of 7.5% or 8% on metformin. Would you use semaglutide 1 mg (Ozempic, Novo Nordisk) that is indicated for type 2 diabetes, or would you use semaglutide 2.4 mg that is indicated for obesity and risk factors?

“We have the answer to that from STEP 2,” said Melanie J. Davies, MB ChB, MD, professor of diabetes medicine at the University of Leicester, England, who led the STEP 2 trial.

Sara Freeman/MDedge News
Dr. Melanie J. Davies

“For some patients, the 1-mg dose, which we use routinely in the clinic, may be reasonable to get good glycemic control for cardiovascular protection and will obviously achieve some weight loss. But if you really want to go for the weight-related comorbidities, then the 2.4-mg dose is what you need,” she said.

“A lot of [clinicians] might say: ‘I’ll see how [the patient goes] with the 1-mg dose, and then maybe if they’re not losing the weight and not getting to glycemic target, then maybe I’ll switch to 2.4 mg,’” said John Wilding, MD, who leads clinical research into obesity, diabetes, and endocrinology at the University of Liverpool, England, and led the STEP 1 trial.

“But the STEP 2 data show very clearly that you get almost the same A1c,” Dr. Rosenstock interjected. “I would go for 2.4 mg. The patient has a BMI of 32, 33 kg/m2. I would hit hard the BMI. We need to change that paradigm.”

“For other diseases we don’t always go to the maximum dose that’s available. We go to the dose that’s necessary to achieve the clinical endpoint that we want,” Dr. Kaplan noted. “I think one of the challenges is going to be to learn how to clinically nuance our therapy the way we do for other diseases.”

“That is the usual thinking,” Dr. Rosenstock agreed. But “with the 2.4-mg dose, one third get a 20% reduction of BMI, and 10% get almost a 30% reduction – and you [aren’t] going to see that with semaglutide 1 mg!”

“That’s true,” Dr. Kaplan conceded. However, a patient with a relatively low BMI of 32, 33 kg/m2 may not need the higher dose, unlike a patient who has a BMI of 45 kg/m2 and diabetes. But we’re going to find that out over the next couple of years, he expects.

 

 

Case 2

You have a patient with a BMI of 31 kg/m2 who is newly diagnosed with type 2 diabetes. Why should you start that patient with metformin? Why won’t you start with something that will directly tackle obesity and get the patient to lose 20 pounds and for sure the blood sugar is going to be better?

“I think if I have someone who is really keen to put their diabetes into remission,” Dr. Wilding said, “this would be a fantastic approach because they would have a really high chance of doing that.”

The prediabetes data from STEP showed that “we can put a lot of people from prediabetes back to normal glucose tolerance,” Dr. Wilding noted. “Maybe we can put people with early diabetes back to normal as well. I think that’s a trial that really does need to be done,” he said.

“We’re going to have to figure out the best pathway forward,” Dr. Kaplan observed, noting that multiple stakeholders, including payers, patients, and providers, play a role in the uptake of new obesity drugs.

“Do you think we will see less bariatric surgery with these drugs?” Dr. Rosenstock asked Dr. Kaplan.

“I think you have to remember that of the millions and millions of people with obesity, a very small portion are currently treated with antiobesity medication, and an even smaller portion are getting bariatric surgery,” Dr. Kaplan replied.

“In the United States, 90% of people who get bariatric surgery are self-referred,” he said, so, “I think initially we are not going to see much of a change” in rates of bariatric surgery.

Dr. Rosenstock, Dr. Kaplan, Dr. Wilding, and Dr. Davies disclosed ties with Novo Nordisk and numerous other companies.

A version of this article first appeared on Medscape.com.

The recently licensed weight-loss drug semaglutide 2.4 mg/week (Wegovy, Novo Nordisk) “is likely to usher in a new era in the medical treatment of obesity,” Lee M. Kaplan, MD, PhD, stated at the annual scientific sessions of the American Diabetes Association, held virtually.

Dr. Lee M. Kaplan

Dr. Kaplan discussed the clinical implications of caring for patients with obesity now that the glucagon-like peptide-1 (GLP-1) receptor agonist is approved in the United States for weight loss.

Weight loss with semaglutide 2.4 mg was twice that achieved with liraglutide 3 mg (Saxenda, Novo Nordisk) – that is, roughly a 10%-15% weight loss at 68 weeks, said Dr. Kaplan, who was not involved in the pivotal STEP clinical trials of the agent.  

“I think as we start to see more data come in over the next couple of years,” including from the cardiovascular outcome trial SELECT, he continued, “we’ll be able to use the data to create a nuanced [individualized patient treatment] approach, but we’ll also be able to use our clinical experience, which will grow rapidly over the next few years.”

In the future, semaglutide is likely to be combined with other drugs to provide even greater weight loss, predicts Dr. Kaplan, director of the Obesity, Metabolism, and Nutrition Institute at Massachusetts General Hospital in Boston.

In the meantime, “to be effective, semaglutide needs to be used,” he stressed, while noting that responses to the drug vary by individual, and so this will need to be taken into account.

“Obesity needs to be recognized as a disease in its own right, as well as a risk factor for numerous other diseases, [and] equitable access to obesity treatment needs to be broadened,” he emphasized.
 

Four pivotal phase 3 trials

As previously reported, four pivotal 68-week, phase 3 clinical trials in the Semaglutide Treatment Effect in People With Obesity (STEP) program tested the safety and efficacy of subcutaneous semaglutide 2.4 mg/week in more than 4,500 adults with overweight or obesity.

The trials have been published in high profile journals – the New England Journal of Medicine (STEP 1), The Lancet (STEP 2), and JAMA (STEP 3 and STEP 4) – said Robert F. Kushner, MD.

“I would encourage all of you to download and read each of these trials on your own,” Dr. Kushner, professor of medicine and medicine education at Northwestern University, Chicago, and coauthor of STEP 1, said before presenting a top-level review of key results.

STEP 1 examined weight management, STEP 3 added a background of intensive behavioral therapy, STEP 4 investigated sustained weight management, and STEP 2 (unlike the others) investigated weight management in patients with type 2 diabetes, he summarized.

In STEP 1, patients who received semaglutide had an average 15% weight loss, and those who stayed on the drug had a 17% weight loss, compared with the 2.4% weight loss in the placebo group.

“One-third of individuals in the trial achieved at least a 20% weight loss or more,” Dr. Kushner said, which is “really phenomenal.”

The results of STEP 3 “suggest that semaglutide with monthly brief lifestyle counseling alone is sufficient to produce a mean weight loss of 15%,” he noted, as adding a low-calorie diet and intensive behavior therapy sped up the initial weight loss but did not increase the final weight loss.

A post hoc analysis of STEP 2 showed “it’s clear that improvement in A1c” is greater with at least a 10% weight loss versus a smaller weight loss, Dr. Kushner said. A1c dropped by 2.2% versus 1.3%, with these two weight losses, respectively.

In STEP 4, after dose escalation to 2.4 mg at 20 weeks, patients had lost 10.6% of their initial weight. At 68 weeks, those who were switched to placebo at 20 weeks had lost 5.4% of their initial weight, whereas those who remained on semaglutide had lost 17.7% of their initial weight.

This shows that “if you remove the drug, the disease starts to come back,” Dr. Kushner pointed out.

Nausea, the most common side effect, occurred in 20% of patients, but was mostly mild or moderate, and gastrointestinal effects including constipation, vomiting, and diarrhea were transient and occurred early in the dose escalation phase.
 

 

 

Large individual variability, combination therapies on horizon

Dr. Kaplan pointed out, however, that “like [with] other antiobesity therapies ... there’s a large patient-to-patient variability.”

A third of patients exhibit more than 20% weight loss, and 10% exhibit more than 30% weight loss – approaching the efficacy of bariatric surgery.

However, nearly 10% of patients without diabetes and upwards of 30% of patients with diabetes will experience less than 5% weight loss, he said.

Therefore, “success or failure in one patient doesn’t predict response in another, and we should always remember that as we treat different patients with these medications,” Dr. Kaplan advised.

A recent phase 1b study suggests that combination therapy with semaglutide and the amylin agonist cagrilintide ups weight loss, as previously reported.

In this short trial with no lifestyle modification, it took 16 weeks for patients to reach full dosing, and at 20 weeks, patients on semaglutide had lost 8% of their initial weight, whereas those on combination therapy had lost 17% of their initial weight.

“There’s hope that, in combination with cagrilintide and probably with several other agents that are still in early development, we’ll be seeing average weight loss that is in the range of that seen with bariatric surgery,” Dr. Kushner said.
 

Doctors discuss two hypothetical cases

Session moderator Julio Rosenstock, MD, of the University of Texas, Dallas, a coinvestigator in several of the STEP trials, invited Dr. Kaplan and two other panelists to explain how they would manage two hypothetical patients.

Case 1

You have a patient with type 2 diabetes, a body mass index of 32, 33 kg/m2, and an A1c of 7.5% or 8% on metformin. Would you use semaglutide 1 mg (Ozempic, Novo Nordisk) that is indicated for type 2 diabetes, or would you use semaglutide 2.4 mg that is indicated for obesity and risk factors?

“We have the answer to that from STEP 2,” said Melanie J. Davies, MB ChB, MD, professor of diabetes medicine at the University of Leicester, England, who led the STEP 2 trial.

Sara Freeman/MDedge News
Dr. Melanie J. Davies

“For some patients, the 1-mg dose, which we use routinely in the clinic, may be reasonable to get good glycemic control for cardiovascular protection and will obviously achieve some weight loss. But if you really want to go for the weight-related comorbidities, then the 2.4-mg dose is what you need,” she said.

“A lot of [clinicians] might say: ‘I’ll see how [the patient goes] with the 1-mg dose, and then maybe if they’re not losing the weight and not getting to glycemic target, then maybe I’ll switch to 2.4 mg,’” said John Wilding, MD, who leads clinical research into obesity, diabetes, and endocrinology at the University of Liverpool, England, and led the STEP 1 trial.

“But the STEP 2 data show very clearly that you get almost the same A1c,” Dr. Rosenstock interjected. “I would go for 2.4 mg. The patient has a BMI of 32, 33 kg/m2. I would hit hard the BMI. We need to change that paradigm.”

“For other diseases we don’t always go to the maximum dose that’s available. We go to the dose that’s necessary to achieve the clinical endpoint that we want,” Dr. Kaplan noted. “I think one of the challenges is going to be to learn how to clinically nuance our therapy the way we do for other diseases.”

“That is the usual thinking,” Dr. Rosenstock agreed. But “with the 2.4-mg dose, one third get a 20% reduction of BMI, and 10% get almost a 30% reduction – and you [aren’t] going to see that with semaglutide 1 mg!”

“That’s true,” Dr. Kaplan conceded. However, a patient with a relatively low BMI of 32, 33 kg/m2 may not need the higher dose, unlike a patient who has a BMI of 45 kg/m2 and diabetes. But we’re going to find that out over the next couple of years, he expects.

 

 

Case 2

You have a patient with a BMI of 31 kg/m2 who is newly diagnosed with type 2 diabetes. Why should you start that patient with metformin? Why won’t you start with something that will directly tackle obesity and get the patient to lose 20 pounds and for sure the blood sugar is going to be better?

“I think if I have someone who is really keen to put their diabetes into remission,” Dr. Wilding said, “this would be a fantastic approach because they would have a really high chance of doing that.”

The prediabetes data from STEP showed that “we can put a lot of people from prediabetes back to normal glucose tolerance,” Dr. Wilding noted. “Maybe we can put people with early diabetes back to normal as well. I think that’s a trial that really does need to be done,” he said.

“We’re going to have to figure out the best pathway forward,” Dr. Kaplan observed, noting that multiple stakeholders, including payers, patients, and providers, play a role in the uptake of new obesity drugs.

“Do you think we will see less bariatric surgery with these drugs?” Dr. Rosenstock asked Dr. Kaplan.

“I think you have to remember that of the millions and millions of people with obesity, a very small portion are currently treated with antiobesity medication, and an even smaller portion are getting bariatric surgery,” Dr. Kaplan replied.

“In the United States, 90% of people who get bariatric surgery are self-referred,” he said, so, “I think initially we are not going to see much of a change” in rates of bariatric surgery.

Dr. Rosenstock, Dr. Kaplan, Dr. Wilding, and Dr. Davies disclosed ties with Novo Nordisk and numerous other companies.

A version of this article first appeared on Medscape.com.

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SUSTAIN FORTE: Higher-dose semaglutide safely boosts glycemic control, weight loss

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Accumulating evidence shows that for many patients with type 2 diabetes, a bigger dose of the glucagonlike peptide–1 receptor agonist semaglutide is better if the goal is a larger decrease in hemoglobin A1c and weight.

Just weeks after the Food and Drug Administration approved an increased, 2.4-mg/week dose of semaglutide (Wegovy) for the indication of weight loss, results from a new randomized study with 961 patients that directly compared the standard 1.0-mg weekly dose for glycemic control with a 2.0-mg weekly dose showed that, over 40 weeks, the higher dose produced modest incremental improvements in both A1c reduction and weight loss while maintaining safety.

“Once weekly 2.0-mg subcutaneous semaglutide [Ozempic] was superior to 1.0 mg in reducing A1c, with greater weight loss and a similar safety profile,” Juan P. Frias, MD, said at the annual scientific sessions of the American Diabetes Association while presenting results of the SUSTAIN FORTE trial.

Average impact of the increased efficacy was measured. In the study’s “treatment policy estimand” analysis (considered equivalent to an intention-to-treat analysis), the primary endpoint of the cut in average A1c fell by a further 0.18% among patients on the higher dose, compared with the lower-dose arm, a significant difference in patients who entered the study with an average A1c of 8.9%. The average incremental boost for weight loss on the higher dose was about 0.8 kg, a difference that just missed significance (P = .0535).

In the study’s “trial product estimand” analysis (which censors data when patients stop the study drug or add on rescue medications), the effects were slightly more robust. The 2-mg dose produced an average 0.23% incremental decrease in A1c, compared with 1 mg, and an average incremental 0.93-kg weight reduction, both significant, reported Dr. Frias, an endocrinologist and medical director of the National Research Institute in Los Angeles.

Dr. Frias highlighted that these modest average differences had a clinical impact for some patients. In the treatment product estimand analysis, the percentage of patients achieving an A1c level of less than 7.0% increased from 58% of those who received 1 mg semaglutide to 68% of those treated with 2 mg, and achievement of an A1c of less than 6.5% occurred in 39% of patients on 1 mg and in 52% of those on 2 mg.

A similar pattern existed for weight loss in the treatment product estimand. Weight loss of at least 5% happened in 51% of patients on the 1-mg dose and in 59% of those on the higher dose.
 

Gradual up-titration aids tolerance

“The GLP-1 receptor agonists have so many benefits, but we were concerned in the past about pushing the dose. We’ve learned more about how to do that so that patients can better tolerate it,” commented Robert A. Gabbay, MD, PhD, chief science and medicine officer of the ADA in Arlington, Va. “The challenge with the medications from this class has been tolerability.”

Courtesy Joslin Diabetes Center
Dr. Robert A. Gabbay

A key to minimizing adverse effects, especially gastrointestinal effects, from treatment with semaglutide and other GLP-1 receptor agonists has been more gradual up-titration to the target dose, Dr. Gabbay noted in an interview, and SUSTAIN FORTE took this approach. All patients started on a 0.25-mg injection of semaglutide once weekly for the first 4 weeks, followed by a 0.5-mg dose once weekly for 4 weeks, and then a 1.0 mg weekly dose. Patients in the arm randomized to receive 2.0 mg had one further dose escalation after receiving the 1.0-mg dose for 4 weeks.

The result was that gastrointestinal adverse effects occurred in 31% of patients maintained for 32 weeks on the 1-mg dose (with 40 total weeks of semaglutide treatment), and in 34% of patients who received the 2-mg dose for 28 weeks (and 40 total weeks of semaglutide treatment). Serious adverse events of all types occurred in 5% of patients in the 1-mg arm and in 4% of those on 2 mg. Total adverse events resulting in treatment discontinuation occurred in about 4.5% of patients in both arms, and discontinuations because of gastrointestinal effects occurred in about 3% of patients in both arms.

Severe hypoglycemia episodes occurred in 1 patient maintained on 1 mg weekly and in 2 patients in the 2-mg arm, while clinically significant episodes of hypoglycemia occurred in 18 patients on the 1-mg dose (4%) and in 12 of the patients on 2 mg (3%).

“It’s reassuring that the higher dose is tolerated,” commented Dr. Gabbay.
 

Several doses to choose from

SUSTAIN FORTE ran during 2019-2020 at about 125 centers in 10 countries, with roughly half the sites in the United States. It randomized adults with type 2 diabetes and an A1c of 8.0%-10.0% despite ongoing metformin treatment in all patients. Just over half the patients were also maintained on a sulfonylurea agent at entry. The enrolled patients had been diagnosed with diabetes for an average of about 10 years. They averaged 58 years of age, their body mass index averaged nearly 35 kg/m2, and about 58% were men.

The new evidence in support of a 2.0-mg weekly dose of semaglutide for patients with type 2 diabetes introduces a new wrinkle in a growing menu of dose options for this drug. On June 4, 2021, the FDA approved a weekly 2.4-mg dose of semaglutide for the indication of weight loss regardless of diabetes status in patients with a body mass index of 30 or higher (or in people at 27 or more with at least one weight-related comorbidity).

Dr. Gabbay suggested that, in practice, clinicians may focus more on treatment goals for individual patients rather than drug dose, especially with an agent that’s safer with slow dose titration.

In general, “clinicians establish a goal for each patient’s A1c; you use the drug dose that gets you there,” he observed.

SUSTAIN FORTE was sponsored by Novo Nordisk, the company that markets semaglutide. Dr. Frias has been a consultant to Novo Nordisk and numerous other companies, he has been a speaker on behalf of Lilly, Merck, and Sanofi, and he has received research funding from Novo Nordisk and numerous other companies. Dr. Gabbay had no relevant disclosures.

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Accumulating evidence shows that for many patients with type 2 diabetes, a bigger dose of the glucagonlike peptide–1 receptor agonist semaglutide is better if the goal is a larger decrease in hemoglobin A1c and weight.

Just weeks after the Food and Drug Administration approved an increased, 2.4-mg/week dose of semaglutide (Wegovy) for the indication of weight loss, results from a new randomized study with 961 patients that directly compared the standard 1.0-mg weekly dose for glycemic control with a 2.0-mg weekly dose showed that, over 40 weeks, the higher dose produced modest incremental improvements in both A1c reduction and weight loss while maintaining safety.

“Once weekly 2.0-mg subcutaneous semaglutide [Ozempic] was superior to 1.0 mg in reducing A1c, with greater weight loss and a similar safety profile,” Juan P. Frias, MD, said at the annual scientific sessions of the American Diabetes Association while presenting results of the SUSTAIN FORTE trial.

Average impact of the increased efficacy was measured. In the study’s “treatment policy estimand” analysis (considered equivalent to an intention-to-treat analysis), the primary endpoint of the cut in average A1c fell by a further 0.18% among patients on the higher dose, compared with the lower-dose arm, a significant difference in patients who entered the study with an average A1c of 8.9%. The average incremental boost for weight loss on the higher dose was about 0.8 kg, a difference that just missed significance (P = .0535).

In the study’s “trial product estimand” analysis (which censors data when patients stop the study drug or add on rescue medications), the effects were slightly more robust. The 2-mg dose produced an average 0.23% incremental decrease in A1c, compared with 1 mg, and an average incremental 0.93-kg weight reduction, both significant, reported Dr. Frias, an endocrinologist and medical director of the National Research Institute in Los Angeles.

Dr. Frias highlighted that these modest average differences had a clinical impact for some patients. In the treatment product estimand analysis, the percentage of patients achieving an A1c level of less than 7.0% increased from 58% of those who received 1 mg semaglutide to 68% of those treated with 2 mg, and achievement of an A1c of less than 6.5% occurred in 39% of patients on 1 mg and in 52% of those on 2 mg.

A similar pattern existed for weight loss in the treatment product estimand. Weight loss of at least 5% happened in 51% of patients on the 1-mg dose and in 59% of those on the higher dose.
 

Gradual up-titration aids tolerance

“The GLP-1 receptor agonists have so many benefits, but we were concerned in the past about pushing the dose. We’ve learned more about how to do that so that patients can better tolerate it,” commented Robert A. Gabbay, MD, PhD, chief science and medicine officer of the ADA in Arlington, Va. “The challenge with the medications from this class has been tolerability.”

Courtesy Joslin Diabetes Center
Dr. Robert A. Gabbay

A key to minimizing adverse effects, especially gastrointestinal effects, from treatment with semaglutide and other GLP-1 receptor agonists has been more gradual up-titration to the target dose, Dr. Gabbay noted in an interview, and SUSTAIN FORTE took this approach. All patients started on a 0.25-mg injection of semaglutide once weekly for the first 4 weeks, followed by a 0.5-mg dose once weekly for 4 weeks, and then a 1.0 mg weekly dose. Patients in the arm randomized to receive 2.0 mg had one further dose escalation after receiving the 1.0-mg dose for 4 weeks.

The result was that gastrointestinal adverse effects occurred in 31% of patients maintained for 32 weeks on the 1-mg dose (with 40 total weeks of semaglutide treatment), and in 34% of patients who received the 2-mg dose for 28 weeks (and 40 total weeks of semaglutide treatment). Serious adverse events of all types occurred in 5% of patients in the 1-mg arm and in 4% of those on 2 mg. Total adverse events resulting in treatment discontinuation occurred in about 4.5% of patients in both arms, and discontinuations because of gastrointestinal effects occurred in about 3% of patients in both arms.

Severe hypoglycemia episodes occurred in 1 patient maintained on 1 mg weekly and in 2 patients in the 2-mg arm, while clinically significant episodes of hypoglycemia occurred in 18 patients on the 1-mg dose (4%) and in 12 of the patients on 2 mg (3%).

“It’s reassuring that the higher dose is tolerated,” commented Dr. Gabbay.
 

Several doses to choose from

SUSTAIN FORTE ran during 2019-2020 at about 125 centers in 10 countries, with roughly half the sites in the United States. It randomized adults with type 2 diabetes and an A1c of 8.0%-10.0% despite ongoing metformin treatment in all patients. Just over half the patients were also maintained on a sulfonylurea agent at entry. The enrolled patients had been diagnosed with diabetes for an average of about 10 years. They averaged 58 years of age, their body mass index averaged nearly 35 kg/m2, and about 58% were men.

The new evidence in support of a 2.0-mg weekly dose of semaglutide for patients with type 2 diabetes introduces a new wrinkle in a growing menu of dose options for this drug. On June 4, 2021, the FDA approved a weekly 2.4-mg dose of semaglutide for the indication of weight loss regardless of diabetes status in patients with a body mass index of 30 or higher (or in people at 27 or more with at least one weight-related comorbidity).

Dr. Gabbay suggested that, in practice, clinicians may focus more on treatment goals for individual patients rather than drug dose, especially with an agent that’s safer with slow dose titration.

In general, “clinicians establish a goal for each patient’s A1c; you use the drug dose that gets you there,” he observed.

SUSTAIN FORTE was sponsored by Novo Nordisk, the company that markets semaglutide. Dr. Frias has been a consultant to Novo Nordisk and numerous other companies, he has been a speaker on behalf of Lilly, Merck, and Sanofi, and he has received research funding from Novo Nordisk and numerous other companies. Dr. Gabbay had no relevant disclosures.

 

Accumulating evidence shows that for many patients with type 2 diabetes, a bigger dose of the glucagonlike peptide–1 receptor agonist semaglutide is better if the goal is a larger decrease in hemoglobin A1c and weight.

Just weeks after the Food and Drug Administration approved an increased, 2.4-mg/week dose of semaglutide (Wegovy) for the indication of weight loss, results from a new randomized study with 961 patients that directly compared the standard 1.0-mg weekly dose for glycemic control with a 2.0-mg weekly dose showed that, over 40 weeks, the higher dose produced modest incremental improvements in both A1c reduction and weight loss while maintaining safety.

“Once weekly 2.0-mg subcutaneous semaglutide [Ozempic] was superior to 1.0 mg in reducing A1c, with greater weight loss and a similar safety profile,” Juan P. Frias, MD, said at the annual scientific sessions of the American Diabetes Association while presenting results of the SUSTAIN FORTE trial.

Average impact of the increased efficacy was measured. In the study’s “treatment policy estimand” analysis (considered equivalent to an intention-to-treat analysis), the primary endpoint of the cut in average A1c fell by a further 0.18% among patients on the higher dose, compared with the lower-dose arm, a significant difference in patients who entered the study with an average A1c of 8.9%. The average incremental boost for weight loss on the higher dose was about 0.8 kg, a difference that just missed significance (P = .0535).

In the study’s “trial product estimand” analysis (which censors data when patients stop the study drug or add on rescue medications), the effects were slightly more robust. The 2-mg dose produced an average 0.23% incremental decrease in A1c, compared with 1 mg, and an average incremental 0.93-kg weight reduction, both significant, reported Dr. Frias, an endocrinologist and medical director of the National Research Institute in Los Angeles.

Dr. Frias highlighted that these modest average differences had a clinical impact for some patients. In the treatment product estimand analysis, the percentage of patients achieving an A1c level of less than 7.0% increased from 58% of those who received 1 mg semaglutide to 68% of those treated with 2 mg, and achievement of an A1c of less than 6.5% occurred in 39% of patients on 1 mg and in 52% of those on 2 mg.

A similar pattern existed for weight loss in the treatment product estimand. Weight loss of at least 5% happened in 51% of patients on the 1-mg dose and in 59% of those on the higher dose.
 

Gradual up-titration aids tolerance

“The GLP-1 receptor agonists have so many benefits, but we were concerned in the past about pushing the dose. We’ve learned more about how to do that so that patients can better tolerate it,” commented Robert A. Gabbay, MD, PhD, chief science and medicine officer of the ADA in Arlington, Va. “The challenge with the medications from this class has been tolerability.”

Courtesy Joslin Diabetes Center
Dr. Robert A. Gabbay

A key to minimizing adverse effects, especially gastrointestinal effects, from treatment with semaglutide and other GLP-1 receptor agonists has been more gradual up-titration to the target dose, Dr. Gabbay noted in an interview, and SUSTAIN FORTE took this approach. All patients started on a 0.25-mg injection of semaglutide once weekly for the first 4 weeks, followed by a 0.5-mg dose once weekly for 4 weeks, and then a 1.0 mg weekly dose. Patients in the arm randomized to receive 2.0 mg had one further dose escalation after receiving the 1.0-mg dose for 4 weeks.

The result was that gastrointestinal adverse effects occurred in 31% of patients maintained for 32 weeks on the 1-mg dose (with 40 total weeks of semaglutide treatment), and in 34% of patients who received the 2-mg dose for 28 weeks (and 40 total weeks of semaglutide treatment). Serious adverse events of all types occurred in 5% of patients in the 1-mg arm and in 4% of those on 2 mg. Total adverse events resulting in treatment discontinuation occurred in about 4.5% of patients in both arms, and discontinuations because of gastrointestinal effects occurred in about 3% of patients in both arms.

Severe hypoglycemia episodes occurred in 1 patient maintained on 1 mg weekly and in 2 patients in the 2-mg arm, while clinically significant episodes of hypoglycemia occurred in 18 patients on the 1-mg dose (4%) and in 12 of the patients on 2 mg (3%).

“It’s reassuring that the higher dose is tolerated,” commented Dr. Gabbay.
 

Several doses to choose from

SUSTAIN FORTE ran during 2019-2020 at about 125 centers in 10 countries, with roughly half the sites in the United States. It randomized adults with type 2 diabetes and an A1c of 8.0%-10.0% despite ongoing metformin treatment in all patients. Just over half the patients were also maintained on a sulfonylurea agent at entry. The enrolled patients had been diagnosed with diabetes for an average of about 10 years. They averaged 58 years of age, their body mass index averaged nearly 35 kg/m2, and about 58% were men.

The new evidence in support of a 2.0-mg weekly dose of semaglutide for patients with type 2 diabetes introduces a new wrinkle in a growing menu of dose options for this drug. On June 4, 2021, the FDA approved a weekly 2.4-mg dose of semaglutide for the indication of weight loss regardless of diabetes status in patients with a body mass index of 30 or higher (or in people at 27 or more with at least one weight-related comorbidity).

Dr. Gabbay suggested that, in practice, clinicians may focus more on treatment goals for individual patients rather than drug dose, especially with an agent that’s safer with slow dose titration.

In general, “clinicians establish a goal for each patient’s A1c; you use the drug dose that gets you there,” he observed.

SUSTAIN FORTE was sponsored by Novo Nordisk, the company that markets semaglutide. Dr. Frias has been a consultant to Novo Nordisk and numerous other companies, he has been a speaker on behalf of Lilly, Merck, and Sanofi, and he has received research funding from Novo Nordisk and numerous other companies. Dr. Gabbay had no relevant disclosures.

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‘Staggering’ doubling of type 2 diabetes in children during pandemic

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The incidence of type 2 diabetes in children appears to have doubled during the COVID-19 pandemic, data from two new U.S. studies suggest, with the lead investigator of one saying she was “surprised by the staggering increase in cases of type 2 diabetes ... and the increase in severity of presentation.”

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Findings from the two separate retrospective chart reviews – one conducted in Washington, D.C., and the other in Baton Rouge, La. – were presented June 25 at the annual scientific sessions of the American Diabetes Association.

Although the two studies differed somewhat in the clinical parameters examined, both revealed a similar doubling of the rates of hospitalizations for type 2 diabetes among youth during 2020, compared with the same time period in 2019, as well as greater severity of metabolic disturbance.

And, as has been previously described with type 2 diabetes in youth, African American ethnicity predominated in both cohorts.

“Although we could not assess the cause of the increases in type 2 diabetes from our data, these disparities suggest that indirect effects of social distancing measures, including school closure and unemployment, are placing undue burden on underserved communities. Decreases in well-child care and fears of seeking medical care during the pandemic may have also contributed,” lead investigator of one of the studies, pediatric endocrinologist Brynn E. Marks, MD, Children’s National Hospital, Washington, said in an interview.
 

More hospitalizations, racial disparities aggravated by COVID-19

Lead author of the other study, Daniel S. Hsia, MD, Pennington Biomedical Research Center, Baton Rouge, said in an interview: “Since the pandemic, our data suggest that more children may be diagnosed with type 2 diabetes and may require hospitalization when they are diagnosed. Looking at both datasets, there appears to be a racial disparity in type 2 diabetes diagnoses that has only been exacerbated by the COVID-19 pandemic.”

Of concern, Dr. Hsia said, “The incidence rate of type 2 diabetes in children was already on the rise before the pandemic. While there may be a brief leveling off now that children are getting regular health care and going back to school in person, I believe these rates will continue to rise especially in light of the childhood obesity rates not improving.”

Their dataset captured all youth who were newly diagnosed with type 2 diabetes during the first full year of the COVID-19 pandemic, from March 11, 2020, to March 10, 2021, and compared those data with the time period from March 11, 2019, to March 10, 2020.

During the pandemic, the number of cases of type 2 diabetes increased by 182%, from 50 in 2019 to 141 in 2020. The average age at diagnosis was about 14 years in both time periods.

In the prepandemic period, 18 (36%) diagnosed with type 2 diabetes required inpatient admission, compared with 85 (60.3%) during the pandemic. At Children’s National, youth with suspected new-onset type 2 diabetes aren’t typically hospitalized unless they have severe hyperglycemia, ketosis, or are unable to schedule urgent outpatient follow-up, Dr. Marks noted.

The proportions of youth with new-onset type 2 diabetes who presented in diabetic ketoacidosis (DKA) rose from 2 (4%) prepandemic to 33 (23.4%) during the pandemic. Presentation with hyperosmolar DKA rose from 0 to 13 (9.2%).

However, during the pandemic only five youth were actively infected with SARS-CoV-2 at the time of type 2 diabetes diagnosis among the 90 tested.

Dr. Marks said: “We believe the increase in inpatient admissions was due to more severe presentation during the pandemic. ...We were surprised by the staggering increase in cases of type 2 diabetes ... and the increase in severity of presentation.”
 

Shift in diagnoses to type 2 diabetes

The pandemic also appears to have shifted the proportion of youth diagnosed with type 2 diabetes, compared with type 1 diabetes. Whereas 24% of youth with new-onset diabetes prepandemic had type 2 diabetes and the rest had type 1 diabetes, during pandemic the proportion with type 2 diabetes rose to 44%.

“Rates of type 2 diabetes rose steadily at a rate of 1.45 cases per month throughout the course of the pandemic, suggesting a cumulative effect of the indirect effects of social distancing measures,” Dr. Marks said.

Furthermore, she added, whereas 60% of youth diagnosed with type 2 diabetes before the pandemic were female, the rate fell to 40% during the pandemic. This trend might be because of activity levels in that, while male adolescents are typically more active, rates of exercise fell in both sexes during the pandemic but declined more sharply in males such that activity levels between the sexes became equal.  

Although type 2 diabetes in youth has always been more common in ethnic minorities, the pandemic appears to have exacerbated these disparities.

While 58% of youth diagnosed with type 2 diabetes prepandemic identified as non-Hispanic Black, that proportion rose to 76.7% during the pandemic. Among Black youth with new-onset type 2 diabetes, 31 of 33 presented in DKA, and 12 of the 13 who presented in hyperosmolar DKA during the pandemic were Black.

“Strategies to promote health equity and address the undue burden of the COVID-19 pandemic on underserved communities must be developed to avoid worsening disparities and long-term health outcomes,” Dr. Marks said.
 

‘A microcosm’: Similar findings in a smaller population

Dr. Hsia and colleagues looked at a smaller number of patients in a shorter time period. In March–December 2019, the hospitalization rate for new-onset type 2 diabetes was 0.27% (8 out of 2,964 hospitalizations), compared with 0.62% (17 out of 2,729 hospitalizations) during the same period in 2020 (P < .048) – also more than a doubling. Age at admission, sex, and body mass index didn’t differ between the two groups.

Criteria for DKA were met by three children in 2019 versus eight in 2020, and hyperosmolar hyperglycemic syndrome in zero versus two, respectively. Mean hemoglobin A1c on admission was 12.4% in 2019 versus 13.1% in 2020 (P = .59), and mean serum glucose was 441 mg/dL versus 669 mg/dL (P = .14), respectively. Serum osmolality on admission was 314 mmol/kg in 2019 versus 335 mmol/kg in 2020 (P = .19).

“Clinically speaking the differences in the lab values were significant, but we did not have enough numbers ... to see a statistically significant difference. I think by looking at more centers, our site likely represents a microcosm of what is happening across the country,” Dr. Hsia said.

In 2019, 7 of the 8 children were African American, as were 16 of the 17 children in 2020. The other single child in each group was White.

Dr. Hsia said: “Larger studies that include more patients are needed to confirm our initial findings. More research is needed to understand why this increasing trend of type 2 diabetes diagnoses in children may be occurring [and] to better understand how stay-at-home orders and other restrictions due to COVID-19 have worsened risk factors for type 2 diabetes.”

“These include decreased physical activity, more screen time, disturbed sleep, and increased intake of processed foods, which can all lead to weight gain,” he concluded.

Dr. Marks reported receiving research support from Tandem, Dexcom, and the Cystic Fibrosis Foundation. Dr. Hsia reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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The incidence of type 2 diabetes in children appears to have doubled during the COVID-19 pandemic, data from two new U.S. studies suggest, with the lead investigator of one saying she was “surprised by the staggering increase in cases of type 2 diabetes ... and the increase in severity of presentation.”

Anetta_R/Thinkstock

Findings from the two separate retrospective chart reviews – one conducted in Washington, D.C., and the other in Baton Rouge, La. – were presented June 25 at the annual scientific sessions of the American Diabetes Association.

Although the two studies differed somewhat in the clinical parameters examined, both revealed a similar doubling of the rates of hospitalizations for type 2 diabetes among youth during 2020, compared with the same time period in 2019, as well as greater severity of metabolic disturbance.

And, as has been previously described with type 2 diabetes in youth, African American ethnicity predominated in both cohorts.

“Although we could not assess the cause of the increases in type 2 diabetes from our data, these disparities suggest that indirect effects of social distancing measures, including school closure and unemployment, are placing undue burden on underserved communities. Decreases in well-child care and fears of seeking medical care during the pandemic may have also contributed,” lead investigator of one of the studies, pediatric endocrinologist Brynn E. Marks, MD, Children’s National Hospital, Washington, said in an interview.
 

More hospitalizations, racial disparities aggravated by COVID-19

Lead author of the other study, Daniel S. Hsia, MD, Pennington Biomedical Research Center, Baton Rouge, said in an interview: “Since the pandemic, our data suggest that more children may be diagnosed with type 2 diabetes and may require hospitalization when they are diagnosed. Looking at both datasets, there appears to be a racial disparity in type 2 diabetes diagnoses that has only been exacerbated by the COVID-19 pandemic.”

Of concern, Dr. Hsia said, “The incidence rate of type 2 diabetes in children was already on the rise before the pandemic. While there may be a brief leveling off now that children are getting regular health care and going back to school in person, I believe these rates will continue to rise especially in light of the childhood obesity rates not improving.”

Their dataset captured all youth who were newly diagnosed with type 2 diabetes during the first full year of the COVID-19 pandemic, from March 11, 2020, to March 10, 2021, and compared those data with the time period from March 11, 2019, to March 10, 2020.

During the pandemic, the number of cases of type 2 diabetes increased by 182%, from 50 in 2019 to 141 in 2020. The average age at diagnosis was about 14 years in both time periods.

In the prepandemic period, 18 (36%) diagnosed with type 2 diabetes required inpatient admission, compared with 85 (60.3%) during the pandemic. At Children’s National, youth with suspected new-onset type 2 diabetes aren’t typically hospitalized unless they have severe hyperglycemia, ketosis, or are unable to schedule urgent outpatient follow-up, Dr. Marks noted.

The proportions of youth with new-onset type 2 diabetes who presented in diabetic ketoacidosis (DKA) rose from 2 (4%) prepandemic to 33 (23.4%) during the pandemic. Presentation with hyperosmolar DKA rose from 0 to 13 (9.2%).

However, during the pandemic only five youth were actively infected with SARS-CoV-2 at the time of type 2 diabetes diagnosis among the 90 tested.

Dr. Marks said: “We believe the increase in inpatient admissions was due to more severe presentation during the pandemic. ...We were surprised by the staggering increase in cases of type 2 diabetes ... and the increase in severity of presentation.”
 

Shift in diagnoses to type 2 diabetes

The pandemic also appears to have shifted the proportion of youth diagnosed with type 2 diabetes, compared with type 1 diabetes. Whereas 24% of youth with new-onset diabetes prepandemic had type 2 diabetes and the rest had type 1 diabetes, during pandemic the proportion with type 2 diabetes rose to 44%.

“Rates of type 2 diabetes rose steadily at a rate of 1.45 cases per month throughout the course of the pandemic, suggesting a cumulative effect of the indirect effects of social distancing measures,” Dr. Marks said.

Furthermore, she added, whereas 60% of youth diagnosed with type 2 diabetes before the pandemic were female, the rate fell to 40% during the pandemic. This trend might be because of activity levels in that, while male adolescents are typically more active, rates of exercise fell in both sexes during the pandemic but declined more sharply in males such that activity levels between the sexes became equal.  

Although type 2 diabetes in youth has always been more common in ethnic minorities, the pandemic appears to have exacerbated these disparities.

While 58% of youth diagnosed with type 2 diabetes prepandemic identified as non-Hispanic Black, that proportion rose to 76.7% during the pandemic. Among Black youth with new-onset type 2 diabetes, 31 of 33 presented in DKA, and 12 of the 13 who presented in hyperosmolar DKA during the pandemic were Black.

“Strategies to promote health equity and address the undue burden of the COVID-19 pandemic on underserved communities must be developed to avoid worsening disparities and long-term health outcomes,” Dr. Marks said.
 

‘A microcosm’: Similar findings in a smaller population

Dr. Hsia and colleagues looked at a smaller number of patients in a shorter time period. In March–December 2019, the hospitalization rate for new-onset type 2 diabetes was 0.27% (8 out of 2,964 hospitalizations), compared with 0.62% (17 out of 2,729 hospitalizations) during the same period in 2020 (P < .048) – also more than a doubling. Age at admission, sex, and body mass index didn’t differ between the two groups.

Criteria for DKA were met by three children in 2019 versus eight in 2020, and hyperosmolar hyperglycemic syndrome in zero versus two, respectively. Mean hemoglobin A1c on admission was 12.4% in 2019 versus 13.1% in 2020 (P = .59), and mean serum glucose was 441 mg/dL versus 669 mg/dL (P = .14), respectively. Serum osmolality on admission was 314 mmol/kg in 2019 versus 335 mmol/kg in 2020 (P = .19).

“Clinically speaking the differences in the lab values were significant, but we did not have enough numbers ... to see a statistically significant difference. I think by looking at more centers, our site likely represents a microcosm of what is happening across the country,” Dr. Hsia said.

In 2019, 7 of the 8 children were African American, as were 16 of the 17 children in 2020. The other single child in each group was White.

Dr. Hsia said: “Larger studies that include more patients are needed to confirm our initial findings. More research is needed to understand why this increasing trend of type 2 diabetes diagnoses in children may be occurring [and] to better understand how stay-at-home orders and other restrictions due to COVID-19 have worsened risk factors for type 2 diabetes.”

“These include decreased physical activity, more screen time, disturbed sleep, and increased intake of processed foods, which can all lead to weight gain,” he concluded.

Dr. Marks reported receiving research support from Tandem, Dexcom, and the Cystic Fibrosis Foundation. Dr. Hsia reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

 

The incidence of type 2 diabetes in children appears to have doubled during the COVID-19 pandemic, data from two new U.S. studies suggest, with the lead investigator of one saying she was “surprised by the staggering increase in cases of type 2 diabetes ... and the increase in severity of presentation.”

Anetta_R/Thinkstock

Findings from the two separate retrospective chart reviews – one conducted in Washington, D.C., and the other in Baton Rouge, La. – were presented June 25 at the annual scientific sessions of the American Diabetes Association.

Although the two studies differed somewhat in the clinical parameters examined, both revealed a similar doubling of the rates of hospitalizations for type 2 diabetes among youth during 2020, compared with the same time period in 2019, as well as greater severity of metabolic disturbance.

And, as has been previously described with type 2 diabetes in youth, African American ethnicity predominated in both cohorts.

“Although we could not assess the cause of the increases in type 2 diabetes from our data, these disparities suggest that indirect effects of social distancing measures, including school closure and unemployment, are placing undue burden on underserved communities. Decreases in well-child care and fears of seeking medical care during the pandemic may have also contributed,” lead investigator of one of the studies, pediatric endocrinologist Brynn E. Marks, MD, Children’s National Hospital, Washington, said in an interview.
 

More hospitalizations, racial disparities aggravated by COVID-19

Lead author of the other study, Daniel S. Hsia, MD, Pennington Biomedical Research Center, Baton Rouge, said in an interview: “Since the pandemic, our data suggest that more children may be diagnosed with type 2 diabetes and may require hospitalization when they are diagnosed. Looking at both datasets, there appears to be a racial disparity in type 2 diabetes diagnoses that has only been exacerbated by the COVID-19 pandemic.”

Of concern, Dr. Hsia said, “The incidence rate of type 2 diabetes in children was already on the rise before the pandemic. While there may be a brief leveling off now that children are getting regular health care and going back to school in person, I believe these rates will continue to rise especially in light of the childhood obesity rates not improving.”

Their dataset captured all youth who were newly diagnosed with type 2 diabetes during the first full year of the COVID-19 pandemic, from March 11, 2020, to March 10, 2021, and compared those data with the time period from March 11, 2019, to March 10, 2020.

During the pandemic, the number of cases of type 2 diabetes increased by 182%, from 50 in 2019 to 141 in 2020. The average age at diagnosis was about 14 years in both time periods.

In the prepandemic period, 18 (36%) diagnosed with type 2 diabetes required inpatient admission, compared with 85 (60.3%) during the pandemic. At Children’s National, youth with suspected new-onset type 2 diabetes aren’t typically hospitalized unless they have severe hyperglycemia, ketosis, or are unable to schedule urgent outpatient follow-up, Dr. Marks noted.

The proportions of youth with new-onset type 2 diabetes who presented in diabetic ketoacidosis (DKA) rose from 2 (4%) prepandemic to 33 (23.4%) during the pandemic. Presentation with hyperosmolar DKA rose from 0 to 13 (9.2%).

However, during the pandemic only five youth were actively infected with SARS-CoV-2 at the time of type 2 diabetes diagnosis among the 90 tested.

Dr. Marks said: “We believe the increase in inpatient admissions was due to more severe presentation during the pandemic. ...We were surprised by the staggering increase in cases of type 2 diabetes ... and the increase in severity of presentation.”
 

Shift in diagnoses to type 2 diabetes

The pandemic also appears to have shifted the proportion of youth diagnosed with type 2 diabetes, compared with type 1 diabetes. Whereas 24% of youth with new-onset diabetes prepandemic had type 2 diabetes and the rest had type 1 diabetes, during pandemic the proportion with type 2 diabetes rose to 44%.

“Rates of type 2 diabetes rose steadily at a rate of 1.45 cases per month throughout the course of the pandemic, suggesting a cumulative effect of the indirect effects of social distancing measures,” Dr. Marks said.

Furthermore, she added, whereas 60% of youth diagnosed with type 2 diabetes before the pandemic were female, the rate fell to 40% during the pandemic. This trend might be because of activity levels in that, while male adolescents are typically more active, rates of exercise fell in both sexes during the pandemic but declined more sharply in males such that activity levels between the sexes became equal.  

Although type 2 diabetes in youth has always been more common in ethnic minorities, the pandemic appears to have exacerbated these disparities.

While 58% of youth diagnosed with type 2 diabetes prepandemic identified as non-Hispanic Black, that proportion rose to 76.7% during the pandemic. Among Black youth with new-onset type 2 diabetes, 31 of 33 presented in DKA, and 12 of the 13 who presented in hyperosmolar DKA during the pandemic were Black.

“Strategies to promote health equity and address the undue burden of the COVID-19 pandemic on underserved communities must be developed to avoid worsening disparities and long-term health outcomes,” Dr. Marks said.
 

‘A microcosm’: Similar findings in a smaller population

Dr. Hsia and colleagues looked at a smaller number of patients in a shorter time period. In March–December 2019, the hospitalization rate for new-onset type 2 diabetes was 0.27% (8 out of 2,964 hospitalizations), compared with 0.62% (17 out of 2,729 hospitalizations) during the same period in 2020 (P < .048) – also more than a doubling. Age at admission, sex, and body mass index didn’t differ between the two groups.

Criteria for DKA were met by three children in 2019 versus eight in 2020, and hyperosmolar hyperglycemic syndrome in zero versus two, respectively. Mean hemoglobin A1c on admission was 12.4% in 2019 versus 13.1% in 2020 (P = .59), and mean serum glucose was 441 mg/dL versus 669 mg/dL (P = .14), respectively. Serum osmolality on admission was 314 mmol/kg in 2019 versus 335 mmol/kg in 2020 (P = .19).

“Clinically speaking the differences in the lab values were significant, but we did not have enough numbers ... to see a statistically significant difference. I think by looking at more centers, our site likely represents a microcosm of what is happening across the country,” Dr. Hsia said.

In 2019, 7 of the 8 children were African American, as were 16 of the 17 children in 2020. The other single child in each group was White.

Dr. Hsia said: “Larger studies that include more patients are needed to confirm our initial findings. More research is needed to understand why this increasing trend of type 2 diabetes diagnoses in children may be occurring [and] to better understand how stay-at-home orders and other restrictions due to COVID-19 have worsened risk factors for type 2 diabetes.”

“These include decreased physical activity, more screen time, disturbed sleep, and increased intake of processed foods, which can all lead to weight gain,” he concluded.

Dr. Marks reported receiving research support from Tandem, Dexcom, and the Cystic Fibrosis Foundation. Dr. Hsia reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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‘Stunning’ twincretin beats semaglutide for A1c, weight reduction in T2D

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Tirzepatide, a novel “twincretin” agent, was superior to 1-mg semaglutide treatments for reducing both hemoglobin A1c levels and body weight in patients with type 2 diabetes in a pivotal, 40-week, head-to-head trial with nearly 1,900 randomized patients, one of four positive pivotal trial results reported for tirzepatide at the annual scientific sessions of the American Diabetes Association.

“Across all four studies we see a significant and clinically meaningful decrease in A1c, and robust weight loss. The results exceeded our expectations” for both these outcomes, said Laura Fernández Landó, MD, senior medical director for tirzepatide at Lilly, the company developing the agent, and a coauthor on the semaglutide comparison study as well as on other tirzepatide reports at the meeting.

“This opens up a new avenue for results in diabetes therapy,” Jens Juul Holst, MD, remarked in a press conference.

SURPASS-2 compared three different tirzepatide doses delivered once weekly by subcutaneous injection against a 1-mg weekly, subcutaneous dose of semaglutide (Ozempic) in 1,879 adults who had been diagnosed with type 2 diabetes for an average of almost 9 years. All patients were already on metformin treatment that had proved inadequate for controlling their hyperglycemia; enrolled patients had an average A1c of 8.28%. The trial’s primary endpoint was change from baseline in A1c levels after 40 weeks.
 

Significant differences at each dose level

Patients on each of the three tirzepatide doses – 5 mg, 10 mg, or 15 mg once weekly – showed dose-dependent reductions in A1c that, for each dose, were significantly better than the reduction achieved with semaglutide. The highest tirzepatide dose reduced A1c levels by an average of 0.45% more than what semaglutide achieved, reported first author Juan P. Frias, MD; Dr. Landó; and their coauthors.

One key secondary endpoint was weight reduction, and each of the three tirzepatide doses again produced significant incremental loss beyond what semaglutide produced. The 5-mg weekly dose of tirzepatide produced an average 1.9-kg additional weight loss, compared with semaglutide, while the 15-mg dose resulted in an average 5.5-kg loss beyond what semaglutide achieved and a total average weight loss of 11.2 kg from baseline.

The study’s additional key secondary endpoints, the percentages of patients reaching an A1c of less than 7%, and less than 5.7%, also showed significantly better numbers with tirzepatide. The highest tirzepatide dose pushed 86% of patients below the 7% mark, compared with 79% on semaglutide, and the top tirzepatide dose resulted in 46% of patients getting their A1c below 5.7%, compared with 19% of patients on semaglutide.

Dr. Jens Juul Holst

The findings are “stunning, I must stay, and those results included that up to half of the patients treated with high doses of tirzepatide may reach A1c levels of less than 5.7%, which is really, really unheard of,” said Dr. Holst, professor of endocrinology and metabolism at the University of Copenhagen. Along with the “weight losses at the same time of up to 12% in that patient group, we are seeing some completely unexpected and really shocking and wonderful new advances in the therapy,” added Dr. Holst.

The safety profile of tirzepatide was roughly similar to semaglutide’s and to that other agents in the glucagonlike peptide-1 receptor agonist (GLP-1 RA) class. Concurrently with the report at the meeting, the results also appeared in an article published online in the New England Journal of Medicine.
 

An ‘impressive’ weight loss effect

Weight loss on tirzepatide was “impressive,” commented Katherine R. Tuttle, MD, a nephrologist affiliated with the University of Washington and executive director for research at Providence Health Care in Spokane, Wash. Another striking feature of tirzepatide’s weight-loss effect was that it did not plateau during the 40 weeks of the study, Dr. Tuttle noted in an accompanying editorial that accompanied the published report, a finding that suggests the potential for additional weight loss from continued treatment .

“The weight loss is remarkable,” commented Rodolfo J. Galindo, MD, an endocrinologist at Emory University, Atlanta. While incremental reduction of A1c on the order of less than 0.5% is helpful, incremental weight loss of more than 10 lbs on tirzepatide, compared with semaglutide “will likely be a tie-breaker” for many clinicians and patients to favor tirzepatide over semaglutide or another GLP-1 RA agent, he said in an interview. Dr. Galindo also cited other important factors that he predicted will drive decisions on using tirzepatide or a GLP-1 RA once tirzepatide reaches the U.S. market: relative cost, access, and tolerability.
 

The important issue of dose

But the edge that tirzepatide showed over semaglutide for weight loss did not occur on a completely level playing field. The 1 mg/week dose of semaglutide used as the comparator in SURPASS-2 was the maximum dose available at the time the study began, but in June 2021 the Food and Drug Administration approved a 2.4 mg/week dose (Wegovy) labeled specifically for weight loss. Dr. Tuttle cited the limitation this introduces in her editorial.

“The dose issue is important,” she wrote. The doses of tirzepatide and semaglutide compared in SURPASS-2 “were not comparable in terms of weight outcomes” given that prior evidence showed that the 2.4 mg/week semaglutide dose is more appropriate for weight loss.

Dr. Katherine R. Tuttle

Dr. Tuttle also cited other factors to consider when assessing tirzepatide compared with agents in the GLP-1 RA class.

Several GLP-1 RA agents, including semaglutide, have proven efficacy for reducing rates of atherosclerotic cardiovascular events and albuminuria, and they also slow decline in kidney function and progression of diabetic kidney disease. No details on the renal effects of tirzepatide appeared in the SURPASS-2 report. A press release from Lilly in May 2021 briefly mentioned results from a meta-analysis of several clinical studies of tirzepatide that showed a nonsignificant effect from tirzepatide on the incidence of major cardiovascular adverse events (death from cardiovascular or undetermined causes, MI, stroke, and hospitalization for unstable angina) relative to comparator groups. Results from a dedicated cardiovascular outcomes trial in high-risk patients treated with tirzepatide, SURPASS-CVOT, are not expected until 2024.

A further limitation of SURPASS-2 was the demographics of the enrolled population, which had a low (0.4%) enrollment rate of Black patients, and a high proportion (70%) of Hispanic patients, Dr. Tuttle observed.
 

Low rates of hypoglycemia

Another notable finding from SURPASS-2 was the low incidence of clinically significant hypoglycemic events (blood glucose levels less than 54 mg/dL), which occurred in 0.2%-1.7% of patients on tirzepatide, depending on their dose, and in 0.4% of patients on semaglutide. Two patients in the tirzepatide cohort had severe hypoglycemia.

These numbers are reassuring, said Dr. Galindo, and reflect the safety of tirzepatide’s dual, incretin-like mechanisms of action that make it a “twincretin.” The molecule acts as both a GLP-1 RA, and as glucose-dependent insulinotropic polypeptide, an incretin that stimulates insulin release when blood sugar is high but also increases glucagon levels when blood sugar levels are normal or low. This dual action may help explain the apparent increased potency tirzepatide showed for both A1c reduction and weight loss, compared with semaglutide, which acts only as a GLP-1 RA.

Some experts have cited the uncertainty introduced by the open-label design of SURPASS-2, a decision necessitated by the distinctly different delivery devices used for tirzepatide and semaglutide, explained Dr. Landó. But she highlighted that double blinding applied to the three different tirzepatide dosages tested in the trial. Dr. Landó said that Lilly plans to seek FDA approval for all three tested tirzepatide doses to give clinicians and patients flexibility in applying the treatment.

SURPASS-2 used a prolonged dose-escalation protocol designed to minimize gastrointestinal adverse effects that started patients on a 2.5 mg weekly dose that then increased by 2.5 mg increments every 4 weeks until patients reached their assigned target dose. This meant that patients did not begin receiving the 15-mg/week dose until halfway through the trial.
 

Several more tirzepatide trials

Reports from two other pivotal trials for tirzepatide also appeared as posters at the meeting. SURPASS-5 compared tirzepatide with placebo in 475 patients inadequately controlled with titrated insulin glargine (Lantus). SURPASS-3 randomized 1,444 patients to tirzepatide or titrated insulin degludec (Tresiba). In both studies treatment with tirzepatide led to significantly better reductions in A1c and in weight loss than the comparator treatments. Results from a third pivotal trial, SURPASS-1 which compared tirzepatide against placebo in 478 treatment-naive patients, will come in a report scheduled for the second day of the meeting.

The results from all the recent tirzepatide trials show a consistent benefit across the continuum of patients with type 2 diabetes regardless of whether it’s recent onset or well-established disease, said Dr. Landó.

The SURPASS studies were sponsored by Lilly, the company developing tirzepatide, and the reports include several authors who are Lilly employees. Dr. Landó is a Lilly employee and stockholder. Dr. Tuttle has been a consultant to Lilly and to Novo Nordisk, the company that markets semaglutide, as well as to AstraZeneca, Bayer, Boehringer Ingelheim, Gilead, and Janssen. She has also received travel expenses from Kyokawa Hakko Kirin, and research funding from Bayer, Goldfinch Bio, and Lilly. Dr. Galindo has been a consultant to Lilly and to Novo Nordisk, as well as to Abbott Diabetes Care, Sanofi, Valeritas, and Weight Watchers, and his institution has received grant support on his behalf from Lilly, Novo Nordisk and Dexcom. Dr. Holst had no disclosures.

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Tirzepatide, a novel “twincretin” agent, was superior to 1-mg semaglutide treatments for reducing both hemoglobin A1c levels and body weight in patients with type 2 diabetes in a pivotal, 40-week, head-to-head trial with nearly 1,900 randomized patients, one of four positive pivotal trial results reported for tirzepatide at the annual scientific sessions of the American Diabetes Association.

“Across all four studies we see a significant and clinically meaningful decrease in A1c, and robust weight loss. The results exceeded our expectations” for both these outcomes, said Laura Fernández Landó, MD, senior medical director for tirzepatide at Lilly, the company developing the agent, and a coauthor on the semaglutide comparison study as well as on other tirzepatide reports at the meeting.

“This opens up a new avenue for results in diabetes therapy,” Jens Juul Holst, MD, remarked in a press conference.

SURPASS-2 compared three different tirzepatide doses delivered once weekly by subcutaneous injection against a 1-mg weekly, subcutaneous dose of semaglutide (Ozempic) in 1,879 adults who had been diagnosed with type 2 diabetes for an average of almost 9 years. All patients were already on metformin treatment that had proved inadequate for controlling their hyperglycemia; enrolled patients had an average A1c of 8.28%. The trial’s primary endpoint was change from baseline in A1c levels after 40 weeks.
 

Significant differences at each dose level

Patients on each of the three tirzepatide doses – 5 mg, 10 mg, or 15 mg once weekly – showed dose-dependent reductions in A1c that, for each dose, were significantly better than the reduction achieved with semaglutide. The highest tirzepatide dose reduced A1c levels by an average of 0.45% more than what semaglutide achieved, reported first author Juan P. Frias, MD; Dr. Landó; and their coauthors.

One key secondary endpoint was weight reduction, and each of the three tirzepatide doses again produced significant incremental loss beyond what semaglutide produced. The 5-mg weekly dose of tirzepatide produced an average 1.9-kg additional weight loss, compared with semaglutide, while the 15-mg dose resulted in an average 5.5-kg loss beyond what semaglutide achieved and a total average weight loss of 11.2 kg from baseline.

The study’s additional key secondary endpoints, the percentages of patients reaching an A1c of less than 7%, and less than 5.7%, also showed significantly better numbers with tirzepatide. The highest tirzepatide dose pushed 86% of patients below the 7% mark, compared with 79% on semaglutide, and the top tirzepatide dose resulted in 46% of patients getting their A1c below 5.7%, compared with 19% of patients on semaglutide.

Dr. Jens Juul Holst

The findings are “stunning, I must stay, and those results included that up to half of the patients treated with high doses of tirzepatide may reach A1c levels of less than 5.7%, which is really, really unheard of,” said Dr. Holst, professor of endocrinology and metabolism at the University of Copenhagen. Along with the “weight losses at the same time of up to 12% in that patient group, we are seeing some completely unexpected and really shocking and wonderful new advances in the therapy,” added Dr. Holst.

The safety profile of tirzepatide was roughly similar to semaglutide’s and to that other agents in the glucagonlike peptide-1 receptor agonist (GLP-1 RA) class. Concurrently with the report at the meeting, the results also appeared in an article published online in the New England Journal of Medicine.
 

An ‘impressive’ weight loss effect

Weight loss on tirzepatide was “impressive,” commented Katherine R. Tuttle, MD, a nephrologist affiliated with the University of Washington and executive director for research at Providence Health Care in Spokane, Wash. Another striking feature of tirzepatide’s weight-loss effect was that it did not plateau during the 40 weeks of the study, Dr. Tuttle noted in an accompanying editorial that accompanied the published report, a finding that suggests the potential for additional weight loss from continued treatment .

“The weight loss is remarkable,” commented Rodolfo J. Galindo, MD, an endocrinologist at Emory University, Atlanta. While incremental reduction of A1c on the order of less than 0.5% is helpful, incremental weight loss of more than 10 lbs on tirzepatide, compared with semaglutide “will likely be a tie-breaker” for many clinicians and patients to favor tirzepatide over semaglutide or another GLP-1 RA agent, he said in an interview. Dr. Galindo also cited other important factors that he predicted will drive decisions on using tirzepatide or a GLP-1 RA once tirzepatide reaches the U.S. market: relative cost, access, and tolerability.
 

The important issue of dose

But the edge that tirzepatide showed over semaglutide for weight loss did not occur on a completely level playing field. The 1 mg/week dose of semaglutide used as the comparator in SURPASS-2 was the maximum dose available at the time the study began, but in June 2021 the Food and Drug Administration approved a 2.4 mg/week dose (Wegovy) labeled specifically for weight loss. Dr. Tuttle cited the limitation this introduces in her editorial.

“The dose issue is important,” she wrote. The doses of tirzepatide and semaglutide compared in SURPASS-2 “were not comparable in terms of weight outcomes” given that prior evidence showed that the 2.4 mg/week semaglutide dose is more appropriate for weight loss.

Dr. Katherine R. Tuttle

Dr. Tuttle also cited other factors to consider when assessing tirzepatide compared with agents in the GLP-1 RA class.

Several GLP-1 RA agents, including semaglutide, have proven efficacy for reducing rates of atherosclerotic cardiovascular events and albuminuria, and they also slow decline in kidney function and progression of diabetic kidney disease. No details on the renal effects of tirzepatide appeared in the SURPASS-2 report. A press release from Lilly in May 2021 briefly mentioned results from a meta-analysis of several clinical studies of tirzepatide that showed a nonsignificant effect from tirzepatide on the incidence of major cardiovascular adverse events (death from cardiovascular or undetermined causes, MI, stroke, and hospitalization for unstable angina) relative to comparator groups. Results from a dedicated cardiovascular outcomes trial in high-risk patients treated with tirzepatide, SURPASS-CVOT, are not expected until 2024.

A further limitation of SURPASS-2 was the demographics of the enrolled population, which had a low (0.4%) enrollment rate of Black patients, and a high proportion (70%) of Hispanic patients, Dr. Tuttle observed.
 

Low rates of hypoglycemia

Another notable finding from SURPASS-2 was the low incidence of clinically significant hypoglycemic events (blood glucose levels less than 54 mg/dL), which occurred in 0.2%-1.7% of patients on tirzepatide, depending on their dose, and in 0.4% of patients on semaglutide. Two patients in the tirzepatide cohort had severe hypoglycemia.

These numbers are reassuring, said Dr. Galindo, and reflect the safety of tirzepatide’s dual, incretin-like mechanisms of action that make it a “twincretin.” The molecule acts as both a GLP-1 RA, and as glucose-dependent insulinotropic polypeptide, an incretin that stimulates insulin release when blood sugar is high but also increases glucagon levels when blood sugar levels are normal or low. This dual action may help explain the apparent increased potency tirzepatide showed for both A1c reduction and weight loss, compared with semaglutide, which acts only as a GLP-1 RA.

Some experts have cited the uncertainty introduced by the open-label design of SURPASS-2, a decision necessitated by the distinctly different delivery devices used for tirzepatide and semaglutide, explained Dr. Landó. But she highlighted that double blinding applied to the three different tirzepatide dosages tested in the trial. Dr. Landó said that Lilly plans to seek FDA approval for all three tested tirzepatide doses to give clinicians and patients flexibility in applying the treatment.

SURPASS-2 used a prolonged dose-escalation protocol designed to minimize gastrointestinal adverse effects that started patients on a 2.5 mg weekly dose that then increased by 2.5 mg increments every 4 weeks until patients reached their assigned target dose. This meant that patients did not begin receiving the 15-mg/week dose until halfway through the trial.
 

Several more tirzepatide trials

Reports from two other pivotal trials for tirzepatide also appeared as posters at the meeting. SURPASS-5 compared tirzepatide with placebo in 475 patients inadequately controlled with titrated insulin glargine (Lantus). SURPASS-3 randomized 1,444 patients to tirzepatide or titrated insulin degludec (Tresiba). In both studies treatment with tirzepatide led to significantly better reductions in A1c and in weight loss than the comparator treatments. Results from a third pivotal trial, SURPASS-1 which compared tirzepatide against placebo in 478 treatment-naive patients, will come in a report scheduled for the second day of the meeting.

The results from all the recent tirzepatide trials show a consistent benefit across the continuum of patients with type 2 diabetes regardless of whether it’s recent onset or well-established disease, said Dr. Landó.

The SURPASS studies were sponsored by Lilly, the company developing tirzepatide, and the reports include several authors who are Lilly employees. Dr. Landó is a Lilly employee and stockholder. Dr. Tuttle has been a consultant to Lilly and to Novo Nordisk, the company that markets semaglutide, as well as to AstraZeneca, Bayer, Boehringer Ingelheim, Gilead, and Janssen. She has also received travel expenses from Kyokawa Hakko Kirin, and research funding from Bayer, Goldfinch Bio, and Lilly. Dr. Galindo has been a consultant to Lilly and to Novo Nordisk, as well as to Abbott Diabetes Care, Sanofi, Valeritas, and Weight Watchers, and his institution has received grant support on his behalf from Lilly, Novo Nordisk and Dexcom. Dr. Holst had no disclosures.

 

Tirzepatide, a novel “twincretin” agent, was superior to 1-mg semaglutide treatments for reducing both hemoglobin A1c levels and body weight in patients with type 2 diabetes in a pivotal, 40-week, head-to-head trial with nearly 1,900 randomized patients, one of four positive pivotal trial results reported for tirzepatide at the annual scientific sessions of the American Diabetes Association.

“Across all four studies we see a significant and clinically meaningful decrease in A1c, and robust weight loss. The results exceeded our expectations” for both these outcomes, said Laura Fernández Landó, MD, senior medical director for tirzepatide at Lilly, the company developing the agent, and a coauthor on the semaglutide comparison study as well as on other tirzepatide reports at the meeting.

“This opens up a new avenue for results in diabetes therapy,” Jens Juul Holst, MD, remarked in a press conference.

SURPASS-2 compared three different tirzepatide doses delivered once weekly by subcutaneous injection against a 1-mg weekly, subcutaneous dose of semaglutide (Ozempic) in 1,879 adults who had been diagnosed with type 2 diabetes for an average of almost 9 years. All patients were already on metformin treatment that had proved inadequate for controlling their hyperglycemia; enrolled patients had an average A1c of 8.28%. The trial’s primary endpoint was change from baseline in A1c levels after 40 weeks.
 

Significant differences at each dose level

Patients on each of the three tirzepatide doses – 5 mg, 10 mg, or 15 mg once weekly – showed dose-dependent reductions in A1c that, for each dose, were significantly better than the reduction achieved with semaglutide. The highest tirzepatide dose reduced A1c levels by an average of 0.45% more than what semaglutide achieved, reported first author Juan P. Frias, MD; Dr. Landó; and their coauthors.

One key secondary endpoint was weight reduction, and each of the three tirzepatide doses again produced significant incremental loss beyond what semaglutide produced. The 5-mg weekly dose of tirzepatide produced an average 1.9-kg additional weight loss, compared with semaglutide, while the 15-mg dose resulted in an average 5.5-kg loss beyond what semaglutide achieved and a total average weight loss of 11.2 kg from baseline.

The study’s additional key secondary endpoints, the percentages of patients reaching an A1c of less than 7%, and less than 5.7%, also showed significantly better numbers with tirzepatide. The highest tirzepatide dose pushed 86% of patients below the 7% mark, compared with 79% on semaglutide, and the top tirzepatide dose resulted in 46% of patients getting their A1c below 5.7%, compared with 19% of patients on semaglutide.

Dr. Jens Juul Holst

The findings are “stunning, I must stay, and those results included that up to half of the patients treated with high doses of tirzepatide may reach A1c levels of less than 5.7%, which is really, really unheard of,” said Dr. Holst, professor of endocrinology and metabolism at the University of Copenhagen. Along with the “weight losses at the same time of up to 12% in that patient group, we are seeing some completely unexpected and really shocking and wonderful new advances in the therapy,” added Dr. Holst.

The safety profile of tirzepatide was roughly similar to semaglutide’s and to that other agents in the glucagonlike peptide-1 receptor agonist (GLP-1 RA) class. Concurrently with the report at the meeting, the results also appeared in an article published online in the New England Journal of Medicine.
 

An ‘impressive’ weight loss effect

Weight loss on tirzepatide was “impressive,” commented Katherine R. Tuttle, MD, a nephrologist affiliated with the University of Washington and executive director for research at Providence Health Care in Spokane, Wash. Another striking feature of tirzepatide’s weight-loss effect was that it did not plateau during the 40 weeks of the study, Dr. Tuttle noted in an accompanying editorial that accompanied the published report, a finding that suggests the potential for additional weight loss from continued treatment .

“The weight loss is remarkable,” commented Rodolfo J. Galindo, MD, an endocrinologist at Emory University, Atlanta. While incremental reduction of A1c on the order of less than 0.5% is helpful, incremental weight loss of more than 10 lbs on tirzepatide, compared with semaglutide “will likely be a tie-breaker” for many clinicians and patients to favor tirzepatide over semaglutide or another GLP-1 RA agent, he said in an interview. Dr. Galindo also cited other important factors that he predicted will drive decisions on using tirzepatide or a GLP-1 RA once tirzepatide reaches the U.S. market: relative cost, access, and tolerability.
 

The important issue of dose

But the edge that tirzepatide showed over semaglutide for weight loss did not occur on a completely level playing field. The 1 mg/week dose of semaglutide used as the comparator in SURPASS-2 was the maximum dose available at the time the study began, but in June 2021 the Food and Drug Administration approved a 2.4 mg/week dose (Wegovy) labeled specifically for weight loss. Dr. Tuttle cited the limitation this introduces in her editorial.

“The dose issue is important,” she wrote. The doses of tirzepatide and semaglutide compared in SURPASS-2 “were not comparable in terms of weight outcomes” given that prior evidence showed that the 2.4 mg/week semaglutide dose is more appropriate for weight loss.

Dr. Katherine R. Tuttle

Dr. Tuttle also cited other factors to consider when assessing tirzepatide compared with agents in the GLP-1 RA class.

Several GLP-1 RA agents, including semaglutide, have proven efficacy for reducing rates of atherosclerotic cardiovascular events and albuminuria, and they also slow decline in kidney function and progression of diabetic kidney disease. No details on the renal effects of tirzepatide appeared in the SURPASS-2 report. A press release from Lilly in May 2021 briefly mentioned results from a meta-analysis of several clinical studies of tirzepatide that showed a nonsignificant effect from tirzepatide on the incidence of major cardiovascular adverse events (death from cardiovascular or undetermined causes, MI, stroke, and hospitalization for unstable angina) relative to comparator groups. Results from a dedicated cardiovascular outcomes trial in high-risk patients treated with tirzepatide, SURPASS-CVOT, are not expected until 2024.

A further limitation of SURPASS-2 was the demographics of the enrolled population, which had a low (0.4%) enrollment rate of Black patients, and a high proportion (70%) of Hispanic patients, Dr. Tuttle observed.
 

Low rates of hypoglycemia

Another notable finding from SURPASS-2 was the low incidence of clinically significant hypoglycemic events (blood glucose levels less than 54 mg/dL), which occurred in 0.2%-1.7% of patients on tirzepatide, depending on their dose, and in 0.4% of patients on semaglutide. Two patients in the tirzepatide cohort had severe hypoglycemia.

These numbers are reassuring, said Dr. Galindo, and reflect the safety of tirzepatide’s dual, incretin-like mechanisms of action that make it a “twincretin.” The molecule acts as both a GLP-1 RA, and as glucose-dependent insulinotropic polypeptide, an incretin that stimulates insulin release when blood sugar is high but also increases glucagon levels when blood sugar levels are normal or low. This dual action may help explain the apparent increased potency tirzepatide showed for both A1c reduction and weight loss, compared with semaglutide, which acts only as a GLP-1 RA.

Some experts have cited the uncertainty introduced by the open-label design of SURPASS-2, a decision necessitated by the distinctly different delivery devices used for tirzepatide and semaglutide, explained Dr. Landó. But she highlighted that double blinding applied to the three different tirzepatide dosages tested in the trial. Dr. Landó said that Lilly plans to seek FDA approval for all three tested tirzepatide doses to give clinicians and patients flexibility in applying the treatment.

SURPASS-2 used a prolonged dose-escalation protocol designed to minimize gastrointestinal adverse effects that started patients on a 2.5 mg weekly dose that then increased by 2.5 mg increments every 4 weeks until patients reached their assigned target dose. This meant that patients did not begin receiving the 15-mg/week dose until halfway through the trial.
 

Several more tirzepatide trials

Reports from two other pivotal trials for tirzepatide also appeared as posters at the meeting. SURPASS-5 compared tirzepatide with placebo in 475 patients inadequately controlled with titrated insulin glargine (Lantus). SURPASS-3 randomized 1,444 patients to tirzepatide or titrated insulin degludec (Tresiba). In both studies treatment with tirzepatide led to significantly better reductions in A1c and in weight loss than the comparator treatments. Results from a third pivotal trial, SURPASS-1 which compared tirzepatide against placebo in 478 treatment-naive patients, will come in a report scheduled for the second day of the meeting.

The results from all the recent tirzepatide trials show a consistent benefit across the continuum of patients with type 2 diabetes regardless of whether it’s recent onset or well-established disease, said Dr. Landó.

The SURPASS studies were sponsored by Lilly, the company developing tirzepatide, and the reports include several authors who are Lilly employees. Dr. Landó is a Lilly employee and stockholder. Dr. Tuttle has been a consultant to Lilly and to Novo Nordisk, the company that markets semaglutide, as well as to AstraZeneca, Bayer, Boehringer Ingelheim, Gilead, and Janssen. She has also received travel expenses from Kyokawa Hakko Kirin, and research funding from Bayer, Goldfinch Bio, and Lilly. Dr. Galindo has been a consultant to Lilly and to Novo Nordisk, as well as to Abbott Diabetes Care, Sanofi, Valeritas, and Weight Watchers, and his institution has received grant support on his behalf from Lilly, Novo Nordisk and Dexcom. Dr. Holst had no disclosures.

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Time-restricted eating ‘promising, but more data are needed’

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Time-restricted eating – that is, reducing the number of hours a person is allowed to eat during the day – may produce a modest 1%-4% weight loss, even without cutting calories, early studies in humans suggest. But more research is needed to provide definitive evidence.

Dr. Courtney M. Peterson

This type of intermittent fasting also appears to improve blood glucose, blood pressure, and oxidative stress, said Courtney M. Peterson, PhD, a researcher at the University of Alabama at Birmingham, summarizing what is known about the potential weight-loss strategy at the annual scientific sessions of the American Diabetes Association.

The best results were seen with early time-restricted eating (that is, ending the nighttime fasting early in the day) and allowing a person to eat 8-10 hours each day (for example, 8 a.m. to 4 p.m. or 8 a.m. to 6 p.m.), with fasting and only water allowed the remaining hours, she reported.

However, the 3 dozen or so studies in humans to date are mainly small, pilot, or single-arm studies lasting up to 3 months, and there are only three main randomized, controlled trials with 25 or more participants in each group.

Large trials with around 260 participants are needed, Dr. Peterson said, “before drawing definitive conclusions” about the weight-loss and cardiometabolic benefits of time-restricted eating.

Invited to comment, session chair Lisa S. Chow, MD, an associate professor of medicine in the endocrine and diabetes division at the University of Minnesota, Minneapolis, similarly said: “I think time-restricted eating is promising because of its simple message and noted weight-loss benefit, yet more data are needed.”

“Many uncertainties remain,” she added, “including the potential concern that time-restricted eating may be associated with lean [muscle] mass loss and identifying the populations most likely to benefit from time-restricted eating,” she said.
 

36 small studies, a review, a meta-analysis, 3 RCTs

There have been about three dozen small studies of time-restricted eating in humans, which examined 4- to 11-hour eating windows, Dr. Peterson explained.

A systematic review of 23 trials of time-restricted eating reported that, on average, participants lost 3% of their initial weight. And a meta-analysis of 19 trials in 475 participants found a –0.9 kg mean difference effect for weight loss.

However, those two analyses did not compare time-restricted eating with a control treatment, she stressed.

The largest randomized, controlled trial is a 12-week study in 271 adults with nonalcoholic fatty liver disease in China, Dr. Peterson said.

The researchers compared three groups:

  • Alternate-day modified fasting: healthy meal provided.
  • Time-restricted eating: 8-hour window, healthy meal provided.
  • Control: 20% calorie reduction, no meal provided.

At 4 and 12 weeks, adults in the two treatment groups lost more weight than those in the control group, but “this was not a fair comparison” because of the lack of a provided meal in the control group, Dr. Peterson pointed out.

The next largest randomized, controlled study is the 12-week TREAT trial, published online in JAMA Internal Medicine in October 2020.

The researchers, from the University of California, San Francisco, randomized 116 adults into two groups:

  • 8-hour time-restricted eating from noon to 8 p.m..
  • Control: three meals/day.

Time-restricted eating did not lead to greater weight loss, compared with three structured meals a day, which was not surprising, Dr. Chow said, as “participants just reported whether they were engaged in time-restricted eating in a yes/no answer.”

Moreover, “there was no objective measure of their eating window. From our study, we showed that the extent of eating window restriction matters, not just time-restricted eating participation.”

Also, in TREAT, the eating window was noon to 8 p.m. (considered late for time-restricted eating), and the trial also allowed noncaloric beverages outside the window, whereas most studies only allow water and medications. 

Lastly, TREAT showed that time-restricted eating reduced weight, compared with baseline, but the weight loss was not significant, compared with the control group, and there was a wide spread of effects (that is, some lost a lot of weight, others didn’t lose much weight).

“That being said, the JAMA Internal Medicine paper is the largest paper to date of time-restricted eating randomized versus control, so its findings need to be acknowledged and recognized,” Dr. Chow said.

Peterson reported that her group recently completed a 14-week intervention in 90 adults with obesity divided into two groups:

  • Control: Continuous energy restriction, self-selected ≥ 12-hour window.
  • Early time-restricted eating: 8-hour window from 7 a.m. to 3 p.m.

The findings will provide further insight into the benefits of time-restricted eating.
 

How might time-restricted eating lead to weight loss?

Dr. Peterson concluded by presenting data suggesting how time-restricted eating may induce weight loss.

In a 4-day crossover study in 11 overweight adults, time-restricted eating did not affect energy expenditure, but it lessened swings in subjective hunger, improved appetite hormones including ghrelin, and increased fat oxidation.

Most trials have reported that time-restricted eating improves one or more cardiometabolic endpoints, she noted.

Early time-restricted eating was associated with improved insulin sensitivity and secretion, blood pressure, and oxidative stress, but not better lipid levels.

In contrast, compared with eating 3 meals/day (control), late time-restricted eating (eating 1 meal/day from 5 p.m. to 9 p.m.) was associated with worsened cardiometabolic health (glucose, insulin, blood pressure, and lipid levels) in an 8-week crossover study in 15 participants.

Dr. Peterson and Dr. Chow reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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Time-restricted eating – that is, reducing the number of hours a person is allowed to eat during the day – may produce a modest 1%-4% weight loss, even without cutting calories, early studies in humans suggest. But more research is needed to provide definitive evidence.

Dr. Courtney M. Peterson

This type of intermittent fasting also appears to improve blood glucose, blood pressure, and oxidative stress, said Courtney M. Peterson, PhD, a researcher at the University of Alabama at Birmingham, summarizing what is known about the potential weight-loss strategy at the annual scientific sessions of the American Diabetes Association.

The best results were seen with early time-restricted eating (that is, ending the nighttime fasting early in the day) and allowing a person to eat 8-10 hours each day (for example, 8 a.m. to 4 p.m. or 8 a.m. to 6 p.m.), with fasting and only water allowed the remaining hours, she reported.

However, the 3 dozen or so studies in humans to date are mainly small, pilot, or single-arm studies lasting up to 3 months, and there are only three main randomized, controlled trials with 25 or more participants in each group.

Large trials with around 260 participants are needed, Dr. Peterson said, “before drawing definitive conclusions” about the weight-loss and cardiometabolic benefits of time-restricted eating.

Invited to comment, session chair Lisa S. Chow, MD, an associate professor of medicine in the endocrine and diabetes division at the University of Minnesota, Minneapolis, similarly said: “I think time-restricted eating is promising because of its simple message and noted weight-loss benefit, yet more data are needed.”

“Many uncertainties remain,” she added, “including the potential concern that time-restricted eating may be associated with lean [muscle] mass loss and identifying the populations most likely to benefit from time-restricted eating,” she said.
 

36 small studies, a review, a meta-analysis, 3 RCTs

There have been about three dozen small studies of time-restricted eating in humans, which examined 4- to 11-hour eating windows, Dr. Peterson explained.

A systematic review of 23 trials of time-restricted eating reported that, on average, participants lost 3% of their initial weight. And a meta-analysis of 19 trials in 475 participants found a –0.9 kg mean difference effect for weight loss.

However, those two analyses did not compare time-restricted eating with a control treatment, she stressed.

The largest randomized, controlled trial is a 12-week study in 271 adults with nonalcoholic fatty liver disease in China, Dr. Peterson said.

The researchers compared three groups:

  • Alternate-day modified fasting: healthy meal provided.
  • Time-restricted eating: 8-hour window, healthy meal provided.
  • Control: 20% calorie reduction, no meal provided.

At 4 and 12 weeks, adults in the two treatment groups lost more weight than those in the control group, but “this was not a fair comparison” because of the lack of a provided meal in the control group, Dr. Peterson pointed out.

The next largest randomized, controlled study is the 12-week TREAT trial, published online in JAMA Internal Medicine in October 2020.

The researchers, from the University of California, San Francisco, randomized 116 adults into two groups:

  • 8-hour time-restricted eating from noon to 8 p.m..
  • Control: three meals/day.

Time-restricted eating did not lead to greater weight loss, compared with three structured meals a day, which was not surprising, Dr. Chow said, as “participants just reported whether they were engaged in time-restricted eating in a yes/no answer.”

Moreover, “there was no objective measure of their eating window. From our study, we showed that the extent of eating window restriction matters, not just time-restricted eating participation.”

Also, in TREAT, the eating window was noon to 8 p.m. (considered late for time-restricted eating), and the trial also allowed noncaloric beverages outside the window, whereas most studies only allow water and medications. 

Lastly, TREAT showed that time-restricted eating reduced weight, compared with baseline, but the weight loss was not significant, compared with the control group, and there was a wide spread of effects (that is, some lost a lot of weight, others didn’t lose much weight).

“That being said, the JAMA Internal Medicine paper is the largest paper to date of time-restricted eating randomized versus control, so its findings need to be acknowledged and recognized,” Dr. Chow said.

Peterson reported that her group recently completed a 14-week intervention in 90 adults with obesity divided into two groups:

  • Control: Continuous energy restriction, self-selected ≥ 12-hour window.
  • Early time-restricted eating: 8-hour window from 7 a.m. to 3 p.m.

The findings will provide further insight into the benefits of time-restricted eating.
 

How might time-restricted eating lead to weight loss?

Dr. Peterson concluded by presenting data suggesting how time-restricted eating may induce weight loss.

In a 4-day crossover study in 11 overweight adults, time-restricted eating did not affect energy expenditure, but it lessened swings in subjective hunger, improved appetite hormones including ghrelin, and increased fat oxidation.

Most trials have reported that time-restricted eating improves one or more cardiometabolic endpoints, she noted.

Early time-restricted eating was associated with improved insulin sensitivity and secretion, blood pressure, and oxidative stress, but not better lipid levels.

In contrast, compared with eating 3 meals/day (control), late time-restricted eating (eating 1 meal/day from 5 p.m. to 9 p.m.) was associated with worsened cardiometabolic health (glucose, insulin, blood pressure, and lipid levels) in an 8-week crossover study in 15 participants.

Dr. Peterson and Dr. Chow reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

 

Time-restricted eating – that is, reducing the number of hours a person is allowed to eat during the day – may produce a modest 1%-4% weight loss, even without cutting calories, early studies in humans suggest. But more research is needed to provide definitive evidence.

Dr. Courtney M. Peterson

This type of intermittent fasting also appears to improve blood glucose, blood pressure, and oxidative stress, said Courtney M. Peterson, PhD, a researcher at the University of Alabama at Birmingham, summarizing what is known about the potential weight-loss strategy at the annual scientific sessions of the American Diabetes Association.

The best results were seen with early time-restricted eating (that is, ending the nighttime fasting early in the day) and allowing a person to eat 8-10 hours each day (for example, 8 a.m. to 4 p.m. or 8 a.m. to 6 p.m.), with fasting and only water allowed the remaining hours, she reported.

However, the 3 dozen or so studies in humans to date are mainly small, pilot, or single-arm studies lasting up to 3 months, and there are only three main randomized, controlled trials with 25 or more participants in each group.

Large trials with around 260 participants are needed, Dr. Peterson said, “before drawing definitive conclusions” about the weight-loss and cardiometabolic benefits of time-restricted eating.

Invited to comment, session chair Lisa S. Chow, MD, an associate professor of medicine in the endocrine and diabetes division at the University of Minnesota, Minneapolis, similarly said: “I think time-restricted eating is promising because of its simple message and noted weight-loss benefit, yet more data are needed.”

“Many uncertainties remain,” she added, “including the potential concern that time-restricted eating may be associated with lean [muscle] mass loss and identifying the populations most likely to benefit from time-restricted eating,” she said.
 

36 small studies, a review, a meta-analysis, 3 RCTs

There have been about three dozen small studies of time-restricted eating in humans, which examined 4- to 11-hour eating windows, Dr. Peterson explained.

A systematic review of 23 trials of time-restricted eating reported that, on average, participants lost 3% of their initial weight. And a meta-analysis of 19 trials in 475 participants found a –0.9 kg mean difference effect for weight loss.

However, those two analyses did not compare time-restricted eating with a control treatment, she stressed.

The largest randomized, controlled trial is a 12-week study in 271 adults with nonalcoholic fatty liver disease in China, Dr. Peterson said.

The researchers compared three groups:

  • Alternate-day modified fasting: healthy meal provided.
  • Time-restricted eating: 8-hour window, healthy meal provided.
  • Control: 20% calorie reduction, no meal provided.

At 4 and 12 weeks, adults in the two treatment groups lost more weight than those in the control group, but “this was not a fair comparison” because of the lack of a provided meal in the control group, Dr. Peterson pointed out.

The next largest randomized, controlled study is the 12-week TREAT trial, published online in JAMA Internal Medicine in October 2020.

The researchers, from the University of California, San Francisco, randomized 116 adults into two groups:

  • 8-hour time-restricted eating from noon to 8 p.m..
  • Control: three meals/day.

Time-restricted eating did not lead to greater weight loss, compared with three structured meals a day, which was not surprising, Dr. Chow said, as “participants just reported whether they were engaged in time-restricted eating in a yes/no answer.”

Moreover, “there was no objective measure of their eating window. From our study, we showed that the extent of eating window restriction matters, not just time-restricted eating participation.”

Also, in TREAT, the eating window was noon to 8 p.m. (considered late for time-restricted eating), and the trial also allowed noncaloric beverages outside the window, whereas most studies only allow water and medications. 

Lastly, TREAT showed that time-restricted eating reduced weight, compared with baseline, but the weight loss was not significant, compared with the control group, and there was a wide spread of effects (that is, some lost a lot of weight, others didn’t lose much weight).

“That being said, the JAMA Internal Medicine paper is the largest paper to date of time-restricted eating randomized versus control, so its findings need to be acknowledged and recognized,” Dr. Chow said.

Peterson reported that her group recently completed a 14-week intervention in 90 adults with obesity divided into two groups:

  • Control: Continuous energy restriction, self-selected ≥ 12-hour window.
  • Early time-restricted eating: 8-hour window from 7 a.m. to 3 p.m.

The findings will provide further insight into the benefits of time-restricted eating.
 

How might time-restricted eating lead to weight loss?

Dr. Peterson concluded by presenting data suggesting how time-restricted eating may induce weight loss.

In a 4-day crossover study in 11 overweight adults, time-restricted eating did not affect energy expenditure, but it lessened swings in subjective hunger, improved appetite hormones including ghrelin, and increased fat oxidation.

Most trials have reported that time-restricted eating improves one or more cardiometabolic endpoints, she noted.

Early time-restricted eating was associated with improved insulin sensitivity and secretion, blood pressure, and oxidative stress, but not better lipid levels.

In contrast, compared with eating 3 meals/day (control), late time-restricted eating (eating 1 meal/day from 5 p.m. to 9 p.m.) was associated with worsened cardiometabolic health (glucose, insulin, blood pressure, and lipid levels) in an 8-week crossover study in 15 participants.

Dr. Peterson and Dr. Chow reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

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