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MOC Woes? This System Might Be the Solution
, and what he hopes will prove less stressful approach to maintaining his credentials: The Longitudinal Knowledge Assessment (LKA).
Dr. Ali, assistant professor at the Icahn School of Medicine at Mount Sinai in New York City, is far from alone. Since the American Board of Internal Medicine (ABIM) launched the new method in 2022, approximately 80% of internists have chosen the LKA to maintain their board certification over the 10-year Maintenance of Certification (MOC) exam coupled with continuing education requirements.
“You have to keep learning. I think the LKA is good in that regard, as long as the questions are relevantly updated,” said Dr. Ali, who was first board-certified in 2018 and obtained his geriatrics certification in 2020.
Many other internists contend the MOC is too time-consuming and expensive and have taken action.
Some specialists, including a group of oncologists, argue the exam contains too much information that has become irrelevant to clinical practice. Members of the American College of Cardiology have even left ABIM over the certification process, as this news organization previously reported. After receiving criticism, the ABIM introduced longitudinal assessment as a less onerous means to maintain certification — although the group denies it succumbed to negative feedback.
One and Done, or More Flexibility?
Both the traditional 10-year exam and the LKA have their advantages and disadvantages, according to Helen Chen, MD, the chair of the Geriatric Medicine Board Exam–Writing Committee at ABIM.
The LKA is arguably easier to access and available for most internal medicine disciplines. It requires no preparation for studying, and internists can complete exam questions on their phone, computer, or tablet.
Participants receive 30 questions per quarter for 5 years. Feedback is immediate and includes links to references for further learning. Once the process is completed and a physician meets the performance standard, the next 5-year cycle begins.
Still, some physicians still prefer the traditional 10-year, long-form exam. Studying for the test can be intense and take months. Physicians also must travel to an exam center on a designated date. However, once the test is over, the certification test does not roll around for another decade.
“It’s really about choice. Some doctors want to sit down and do it all at once and get it over with; others prefer to do a few questions at a time and never feel rushed,” said Dr. Chen, who is triple-boarded in geriatrics, internal medicine, and hospice and palliative medicine.
In 2022, Dr. Chen opted to begin the LKA cycle; a cross-country move and new job would not have allowed her enough time to prepare for the long-form exam, she said.
The new exam challenged her knowledge in smaller bites, provided immediate feedback, and allowed her to satisfy her curiosity through additional reading, she said, even if some questions were not relevant to her clinical practice.
The LKA is not yet as specialized, and ABIM is working to refine questions to be more relevant for some subspecialties.
Questions for both the LKA and long-form exam are developed from physician input, according to Dr. Chen. They are regularly assessed for relevance, accuracy, and changes to practice guidelines.
She acknowledged that questions can sometimes become outdated in a relatively short time, particularly for those taking the 10-year exam. But feedback from physicians helps committees analyze the relevancy of questions and how intensely an area should be tested. Committee members will even throw out questions if the literature changes significantly.
An Unnecessary Exercise
As criticism has mounted over the MOC, physicians have questioned whether recertification is necessary.
According to a survey of 1700 members of the American Society of Clinical Oncology (ASCO), most (64%) backed initial ABIM certification, but three quarters said the recertification process did not benefit their knowledge of clinical practice. More than 80% reported that Continuing Medical Education (CME) credits should suffice for ongoing learning, without having to be supplemented by the MOC exam. ASCO is considering alternative pathways to the current process based on their member feedback and plans to release a proposal to members in the first half of 2024.
Meanwhile, some cardiologists have called the MOC process “an onerous and unnecessary addition to continuing medical education requirements they already must meet at the state and hospital levels.”
The ABIM responded in part in a recent JAMA Viewpoint written by several members of the ABIM board of directors. They said board-certified physicians save the health system about $5 billion annually, compared with those who are not.
“Patients who are cared for by physicians who demonstrate more medical knowledge through certification and MOC have a better prognosis for a host of important outcomes including lower mortality from cardiovascular disease, fewer emergency department visits, and fewer unplanned hospitalizations,” the group wrote.
Certification provides a significant benefit, according to Dr. Ali. Some of his patients do ask about his credentials. He said he also finds keeping up with the latest information essential. Ongoing learning shows patients he is committed to providing the best care, he said. “It benefits me, and I’ve benefited my patients. When they come in with questions, I can speak knowledgeably,” he said.
Maintaining board certification is also not unique to internal medicine physicians or subspecialists. Other physician specialties mandate more frequent exams, include both oral and written portions, or administer exams totally online. The American Academy of Family Physicians (AAFP) has a longitudinal option, similar to the LKA, as an alternative to their 1-day exam.
Margo Savoy, MD, MPH, senior vice president of education, inclusiveness, and physician well-being at AAFP, said physicians should make the best choice for them.
“The AAFP welcomes the opportunity for family physicians to have options for how to demonstrate their competence and strongly encourages a balanced approach that avoids undue administrative burdens and fosters a culture of physician well-being and high-quality care,” Dr. Savoy said.
The ABIM has also been criticized for the fee structure for MOC, which some physicians consider excessive: $220 per year for the first certification and $120 for each additional certification. Physicians choosing to take the 10-year exam are charged an additional $700 testing center fee. Those charges do not include the cost of attending CME-related activities. One analysis estimated the cost of maintaining certification could reach into the tens of thousands of dollars, primarily from the time physicians must spend preparing for the long-form exam.
Dr. Chen pushed back on the contention that the ABIM is making a huge profit off of the 10-year exam. She called MOC fees reasonable when amortized over a 10-year cycle and noted the costs for longitudinal assessment are included in those charges.
Meanwhile, she encouraged physicians who were on the fence about maintaining board certification at all to consider both the benefit to their practice and to their patients, especially since the LKA has already demonstrated such popularity.
“There’s nothing like continuous learning to keep you humble,” Dr. Chen said. “You just don’t know everything.”
A version of this article appeared on Medscape.com.
, and what he hopes will prove less stressful approach to maintaining his credentials: The Longitudinal Knowledge Assessment (LKA).
Dr. Ali, assistant professor at the Icahn School of Medicine at Mount Sinai in New York City, is far from alone. Since the American Board of Internal Medicine (ABIM) launched the new method in 2022, approximately 80% of internists have chosen the LKA to maintain their board certification over the 10-year Maintenance of Certification (MOC) exam coupled with continuing education requirements.
“You have to keep learning. I think the LKA is good in that regard, as long as the questions are relevantly updated,” said Dr. Ali, who was first board-certified in 2018 and obtained his geriatrics certification in 2020.
Many other internists contend the MOC is too time-consuming and expensive and have taken action.
Some specialists, including a group of oncologists, argue the exam contains too much information that has become irrelevant to clinical practice. Members of the American College of Cardiology have even left ABIM over the certification process, as this news organization previously reported. After receiving criticism, the ABIM introduced longitudinal assessment as a less onerous means to maintain certification — although the group denies it succumbed to negative feedback.
One and Done, or More Flexibility?
Both the traditional 10-year exam and the LKA have their advantages and disadvantages, according to Helen Chen, MD, the chair of the Geriatric Medicine Board Exam–Writing Committee at ABIM.
The LKA is arguably easier to access and available for most internal medicine disciplines. It requires no preparation for studying, and internists can complete exam questions on their phone, computer, or tablet.
Participants receive 30 questions per quarter for 5 years. Feedback is immediate and includes links to references for further learning. Once the process is completed and a physician meets the performance standard, the next 5-year cycle begins.
Still, some physicians still prefer the traditional 10-year, long-form exam. Studying for the test can be intense and take months. Physicians also must travel to an exam center on a designated date. However, once the test is over, the certification test does not roll around for another decade.
“It’s really about choice. Some doctors want to sit down and do it all at once and get it over with; others prefer to do a few questions at a time and never feel rushed,” said Dr. Chen, who is triple-boarded in geriatrics, internal medicine, and hospice and palliative medicine.
In 2022, Dr. Chen opted to begin the LKA cycle; a cross-country move and new job would not have allowed her enough time to prepare for the long-form exam, she said.
The new exam challenged her knowledge in smaller bites, provided immediate feedback, and allowed her to satisfy her curiosity through additional reading, she said, even if some questions were not relevant to her clinical practice.
The LKA is not yet as specialized, and ABIM is working to refine questions to be more relevant for some subspecialties.
Questions for both the LKA and long-form exam are developed from physician input, according to Dr. Chen. They are regularly assessed for relevance, accuracy, and changes to practice guidelines.
She acknowledged that questions can sometimes become outdated in a relatively short time, particularly for those taking the 10-year exam. But feedback from physicians helps committees analyze the relevancy of questions and how intensely an area should be tested. Committee members will even throw out questions if the literature changes significantly.
An Unnecessary Exercise
As criticism has mounted over the MOC, physicians have questioned whether recertification is necessary.
According to a survey of 1700 members of the American Society of Clinical Oncology (ASCO), most (64%) backed initial ABIM certification, but three quarters said the recertification process did not benefit their knowledge of clinical practice. More than 80% reported that Continuing Medical Education (CME) credits should suffice for ongoing learning, without having to be supplemented by the MOC exam. ASCO is considering alternative pathways to the current process based on their member feedback and plans to release a proposal to members in the first half of 2024.
Meanwhile, some cardiologists have called the MOC process “an onerous and unnecessary addition to continuing medical education requirements they already must meet at the state and hospital levels.”
The ABIM responded in part in a recent JAMA Viewpoint written by several members of the ABIM board of directors. They said board-certified physicians save the health system about $5 billion annually, compared with those who are not.
“Patients who are cared for by physicians who demonstrate more medical knowledge through certification and MOC have a better prognosis for a host of important outcomes including lower mortality from cardiovascular disease, fewer emergency department visits, and fewer unplanned hospitalizations,” the group wrote.
Certification provides a significant benefit, according to Dr. Ali. Some of his patients do ask about his credentials. He said he also finds keeping up with the latest information essential. Ongoing learning shows patients he is committed to providing the best care, he said. “It benefits me, and I’ve benefited my patients. When they come in with questions, I can speak knowledgeably,” he said.
Maintaining board certification is also not unique to internal medicine physicians or subspecialists. Other physician specialties mandate more frequent exams, include both oral and written portions, or administer exams totally online. The American Academy of Family Physicians (AAFP) has a longitudinal option, similar to the LKA, as an alternative to their 1-day exam.
Margo Savoy, MD, MPH, senior vice president of education, inclusiveness, and physician well-being at AAFP, said physicians should make the best choice for them.
“The AAFP welcomes the opportunity for family physicians to have options for how to demonstrate their competence and strongly encourages a balanced approach that avoids undue administrative burdens and fosters a culture of physician well-being and high-quality care,” Dr. Savoy said.
The ABIM has also been criticized for the fee structure for MOC, which some physicians consider excessive: $220 per year for the first certification and $120 for each additional certification. Physicians choosing to take the 10-year exam are charged an additional $700 testing center fee. Those charges do not include the cost of attending CME-related activities. One analysis estimated the cost of maintaining certification could reach into the tens of thousands of dollars, primarily from the time physicians must spend preparing for the long-form exam.
Dr. Chen pushed back on the contention that the ABIM is making a huge profit off of the 10-year exam. She called MOC fees reasonable when amortized over a 10-year cycle and noted the costs for longitudinal assessment are included in those charges.
Meanwhile, she encouraged physicians who were on the fence about maintaining board certification at all to consider both the benefit to their practice and to their patients, especially since the LKA has already demonstrated such popularity.
“There’s nothing like continuous learning to keep you humble,” Dr. Chen said. “You just don’t know everything.”
A version of this article appeared on Medscape.com.
, and what he hopes will prove less stressful approach to maintaining his credentials: The Longitudinal Knowledge Assessment (LKA).
Dr. Ali, assistant professor at the Icahn School of Medicine at Mount Sinai in New York City, is far from alone. Since the American Board of Internal Medicine (ABIM) launched the new method in 2022, approximately 80% of internists have chosen the LKA to maintain their board certification over the 10-year Maintenance of Certification (MOC) exam coupled with continuing education requirements.
“You have to keep learning. I think the LKA is good in that regard, as long as the questions are relevantly updated,” said Dr. Ali, who was first board-certified in 2018 and obtained his geriatrics certification in 2020.
Many other internists contend the MOC is too time-consuming and expensive and have taken action.
Some specialists, including a group of oncologists, argue the exam contains too much information that has become irrelevant to clinical practice. Members of the American College of Cardiology have even left ABIM over the certification process, as this news organization previously reported. After receiving criticism, the ABIM introduced longitudinal assessment as a less onerous means to maintain certification — although the group denies it succumbed to negative feedback.
One and Done, or More Flexibility?
Both the traditional 10-year exam and the LKA have their advantages and disadvantages, according to Helen Chen, MD, the chair of the Geriatric Medicine Board Exam–Writing Committee at ABIM.
The LKA is arguably easier to access and available for most internal medicine disciplines. It requires no preparation for studying, and internists can complete exam questions on their phone, computer, or tablet.
Participants receive 30 questions per quarter for 5 years. Feedback is immediate and includes links to references for further learning. Once the process is completed and a physician meets the performance standard, the next 5-year cycle begins.
Still, some physicians still prefer the traditional 10-year, long-form exam. Studying for the test can be intense and take months. Physicians also must travel to an exam center on a designated date. However, once the test is over, the certification test does not roll around for another decade.
“It’s really about choice. Some doctors want to sit down and do it all at once and get it over with; others prefer to do a few questions at a time and never feel rushed,” said Dr. Chen, who is triple-boarded in geriatrics, internal medicine, and hospice and palliative medicine.
In 2022, Dr. Chen opted to begin the LKA cycle; a cross-country move and new job would not have allowed her enough time to prepare for the long-form exam, she said.
The new exam challenged her knowledge in smaller bites, provided immediate feedback, and allowed her to satisfy her curiosity through additional reading, she said, even if some questions were not relevant to her clinical practice.
The LKA is not yet as specialized, and ABIM is working to refine questions to be more relevant for some subspecialties.
Questions for both the LKA and long-form exam are developed from physician input, according to Dr. Chen. They are regularly assessed for relevance, accuracy, and changes to practice guidelines.
She acknowledged that questions can sometimes become outdated in a relatively short time, particularly for those taking the 10-year exam. But feedback from physicians helps committees analyze the relevancy of questions and how intensely an area should be tested. Committee members will even throw out questions if the literature changes significantly.
An Unnecessary Exercise
As criticism has mounted over the MOC, physicians have questioned whether recertification is necessary.
According to a survey of 1700 members of the American Society of Clinical Oncology (ASCO), most (64%) backed initial ABIM certification, but three quarters said the recertification process did not benefit their knowledge of clinical practice. More than 80% reported that Continuing Medical Education (CME) credits should suffice for ongoing learning, without having to be supplemented by the MOC exam. ASCO is considering alternative pathways to the current process based on their member feedback and plans to release a proposal to members in the first half of 2024.
Meanwhile, some cardiologists have called the MOC process “an onerous and unnecessary addition to continuing medical education requirements they already must meet at the state and hospital levels.”
The ABIM responded in part in a recent JAMA Viewpoint written by several members of the ABIM board of directors. They said board-certified physicians save the health system about $5 billion annually, compared with those who are not.
“Patients who are cared for by physicians who demonstrate more medical knowledge through certification and MOC have a better prognosis for a host of important outcomes including lower mortality from cardiovascular disease, fewer emergency department visits, and fewer unplanned hospitalizations,” the group wrote.
Certification provides a significant benefit, according to Dr. Ali. Some of his patients do ask about his credentials. He said he also finds keeping up with the latest information essential. Ongoing learning shows patients he is committed to providing the best care, he said. “It benefits me, and I’ve benefited my patients. When they come in with questions, I can speak knowledgeably,” he said.
Maintaining board certification is also not unique to internal medicine physicians or subspecialists. Other physician specialties mandate more frequent exams, include both oral and written portions, or administer exams totally online. The American Academy of Family Physicians (AAFP) has a longitudinal option, similar to the LKA, as an alternative to their 1-day exam.
Margo Savoy, MD, MPH, senior vice president of education, inclusiveness, and physician well-being at AAFP, said physicians should make the best choice for them.
“The AAFP welcomes the opportunity for family physicians to have options for how to demonstrate their competence and strongly encourages a balanced approach that avoids undue administrative burdens and fosters a culture of physician well-being and high-quality care,” Dr. Savoy said.
The ABIM has also been criticized for the fee structure for MOC, which some physicians consider excessive: $220 per year for the first certification and $120 for each additional certification. Physicians choosing to take the 10-year exam are charged an additional $700 testing center fee. Those charges do not include the cost of attending CME-related activities. One analysis estimated the cost of maintaining certification could reach into the tens of thousands of dollars, primarily from the time physicians must spend preparing for the long-form exam.
Dr. Chen pushed back on the contention that the ABIM is making a huge profit off of the 10-year exam. She called MOC fees reasonable when amortized over a 10-year cycle and noted the costs for longitudinal assessment are included in those charges.
Meanwhile, she encouraged physicians who were on the fence about maintaining board certification at all to consider both the benefit to their practice and to their patients, especially since the LKA has already demonstrated such popularity.
“There’s nothing like continuous learning to keep you humble,” Dr. Chen said. “You just don’t know everything.”
A version of this article appeared on Medscape.com.
DMARDs Restore GI Microbiota Balance in RA But Ability to Predict Response Falls Short
Patients with rheumatoid arthritis (RA) whose symptoms improved after they started taking nonbiologic disease-modifying antirheumatic drugs also demonstrated restored balance in their oral and gut flora, which could potentially serve as a marker of how they’ll respond to DMARDs, an observational study in the United Kingdom found.
Reporting in the journal Rheumatology, researchers led by Nathan Danckert, PhD, a genetic epidemiology researcher at King’s College London, and Maxim Freidin, PhD, of the Queen Mary University of London, London, England, evaluated stool and saliva samples of 144 people recently diagnosed with RA before and after they started DMARD therapy.
“We identified a partial restoration of the microbiome to a more eubiotic state in RA patients at 6 weeks and 12 weeks of DMARD treatment in participants [who] responded well to DMARD therapy,” they wrote. “This was further supported by long-term (> 1 year) treated DMARD RA participants with similar community shifts.” Microbiomes, they said, are “a promising diagnostic tool” for directing DMARD therapy.
Study Goal Not Met
The goal of the study was to determine whether the microbiome of patients before they began treatment with DMARDs could predict their response to therapy. The patients were enrolled in the IMRABIOME study. Eligible patients had inflammatory arthritis symptoms for a year or less and met the clinical criteria for RA. Most patients were taking methotrexate (134 at baseline, 77 at 12 weeks), but study participants were also taking sulfasalazine (16 at baseline, 14 at 12 weeks) or hydroxychloroquine (58 at baseline, 45 at 12 weeks) either in combination or as a stand-alone treatment.
The study found a total of 26 different stool microbes that decreased in patients who had a minimal clinically important improvement (MCII) after starting DMARD therapy. At 6 weeks, the most significant declines were in Prevotella species. At 12 weeks, the greatest declines were in Streptococcus.
The researchers also developed models that used gut and oral metagenomes to predict MCII in patients starting DMARD therapy. They used a previously published microbiome dataset as a validation cohort for the model, but they acknowledged their models “were not as strong” as three previously published models. “Our findings support the hypothesis of DMARD restoration of a eubiotic gut microbiome when patient and treatment align,” the authors wrote.
They noted they had anticipated finding baseline microbiome samples that would help predict treatment responses. While baseline evaluation didn’t differentiate between responders and nonresponders, they wrote that a longitudinal analysis demonstrated changing microbiota and a positive response to therapy, with declining levels of Prevotella and Streptococcus species most pronounced at 6 and 12 weeks, respectively.
“Microbiomes provide a promising diagnostic tool for guiding therapeutic decisions in the future,” the study authors wrote.
Commentary
In commenting on the study, Gregg J. Silverman, MD, professor of medicine and pathology at the New York University School of Medicine, New York City, said it “was carefully performed, technically it was actually quite impressive, and the scale of the study actually was quite suitable.”
However, the study fell short of achieving its primary goal of using the microbiome to predict treatment response, he said. “Basically, they could not find there was anything they could correlate with clinical response rates, although they did find that the presence or absence of certain bacteria at 6 weeks or 12 weeks into treatment correlated with a clinical response,” he said.
The multiplicity of DMARDs used by the study population was “one of the complicating factors” of the study, Dr. Silverman said. “It would’ve been a much more easily interpreted study if it used just a single agent like methotrexate,” he said. “I think that’s problematic, but I do think this contributes to getting us a little further down the road of understanding how the microbiome can influence the pathogenesis of rheumatoid arthritis response to treatment.”
One of the questions surrounding the microbiome changes is whether they occurred because of the effect of the therapy itself or because the disease activity subsides, Dr. Silverman said. “So, you’re not sure if it’s cause or effect. There’s evidence to suggest that either could be true.”
This study adds to a 2022 study that found a similar effect with methotrexate, Dr. Silverman said. “They considered a lot of variables, and they considered a lot of potential confounding effects,” he said. “So, their data were well-considered, and they will actually hold up over time and contribute to the next range of studies that will be performed, no doubt, in this area.”
It would be better if those future studies focused on just one DMARD drug and studied the recovered bacteria in animal models to gain a better understanding of how they correlate to pathogenesis, Dr. Silverman added.
The study received funding from Versus Arthritis. Dr. Danckert, Dr. Freidin, and coauthors, as well as Dr. Silverman, reported no relevant financial relationships.
A version of this article appeared on Medscape.com.
Patients with rheumatoid arthritis (RA) whose symptoms improved after they started taking nonbiologic disease-modifying antirheumatic drugs also demonstrated restored balance in their oral and gut flora, which could potentially serve as a marker of how they’ll respond to DMARDs, an observational study in the United Kingdom found.
Reporting in the journal Rheumatology, researchers led by Nathan Danckert, PhD, a genetic epidemiology researcher at King’s College London, and Maxim Freidin, PhD, of the Queen Mary University of London, London, England, evaluated stool and saliva samples of 144 people recently diagnosed with RA before and after they started DMARD therapy.
“We identified a partial restoration of the microbiome to a more eubiotic state in RA patients at 6 weeks and 12 weeks of DMARD treatment in participants [who] responded well to DMARD therapy,” they wrote. “This was further supported by long-term (> 1 year) treated DMARD RA participants with similar community shifts.” Microbiomes, they said, are “a promising diagnostic tool” for directing DMARD therapy.
Study Goal Not Met
The goal of the study was to determine whether the microbiome of patients before they began treatment with DMARDs could predict their response to therapy. The patients were enrolled in the IMRABIOME study. Eligible patients had inflammatory arthritis symptoms for a year or less and met the clinical criteria for RA. Most patients were taking methotrexate (134 at baseline, 77 at 12 weeks), but study participants were also taking sulfasalazine (16 at baseline, 14 at 12 weeks) or hydroxychloroquine (58 at baseline, 45 at 12 weeks) either in combination or as a stand-alone treatment.
The study found a total of 26 different stool microbes that decreased in patients who had a minimal clinically important improvement (MCII) after starting DMARD therapy. At 6 weeks, the most significant declines were in Prevotella species. At 12 weeks, the greatest declines were in Streptococcus.
The researchers also developed models that used gut and oral metagenomes to predict MCII in patients starting DMARD therapy. They used a previously published microbiome dataset as a validation cohort for the model, but they acknowledged their models “were not as strong” as three previously published models. “Our findings support the hypothesis of DMARD restoration of a eubiotic gut microbiome when patient and treatment align,” the authors wrote.
They noted they had anticipated finding baseline microbiome samples that would help predict treatment responses. While baseline evaluation didn’t differentiate between responders and nonresponders, they wrote that a longitudinal analysis demonstrated changing microbiota and a positive response to therapy, with declining levels of Prevotella and Streptococcus species most pronounced at 6 and 12 weeks, respectively.
“Microbiomes provide a promising diagnostic tool for guiding therapeutic decisions in the future,” the study authors wrote.
Commentary
In commenting on the study, Gregg J. Silverman, MD, professor of medicine and pathology at the New York University School of Medicine, New York City, said it “was carefully performed, technically it was actually quite impressive, and the scale of the study actually was quite suitable.”
However, the study fell short of achieving its primary goal of using the microbiome to predict treatment response, he said. “Basically, they could not find there was anything they could correlate with clinical response rates, although they did find that the presence or absence of certain bacteria at 6 weeks or 12 weeks into treatment correlated with a clinical response,” he said.
The multiplicity of DMARDs used by the study population was “one of the complicating factors” of the study, Dr. Silverman said. “It would’ve been a much more easily interpreted study if it used just a single agent like methotrexate,” he said. “I think that’s problematic, but I do think this contributes to getting us a little further down the road of understanding how the microbiome can influence the pathogenesis of rheumatoid arthritis response to treatment.”
One of the questions surrounding the microbiome changes is whether they occurred because of the effect of the therapy itself or because the disease activity subsides, Dr. Silverman said. “So, you’re not sure if it’s cause or effect. There’s evidence to suggest that either could be true.”
This study adds to a 2022 study that found a similar effect with methotrexate, Dr. Silverman said. “They considered a lot of variables, and they considered a lot of potential confounding effects,” he said. “So, their data were well-considered, and they will actually hold up over time and contribute to the next range of studies that will be performed, no doubt, in this area.”
It would be better if those future studies focused on just one DMARD drug and studied the recovered bacteria in animal models to gain a better understanding of how they correlate to pathogenesis, Dr. Silverman added.
The study received funding from Versus Arthritis. Dr. Danckert, Dr. Freidin, and coauthors, as well as Dr. Silverman, reported no relevant financial relationships.
A version of this article appeared on Medscape.com.
Patients with rheumatoid arthritis (RA) whose symptoms improved after they started taking nonbiologic disease-modifying antirheumatic drugs also demonstrated restored balance in their oral and gut flora, which could potentially serve as a marker of how they’ll respond to DMARDs, an observational study in the United Kingdom found.
Reporting in the journal Rheumatology, researchers led by Nathan Danckert, PhD, a genetic epidemiology researcher at King’s College London, and Maxim Freidin, PhD, of the Queen Mary University of London, London, England, evaluated stool and saliva samples of 144 people recently diagnosed with RA before and after they started DMARD therapy.
“We identified a partial restoration of the microbiome to a more eubiotic state in RA patients at 6 weeks and 12 weeks of DMARD treatment in participants [who] responded well to DMARD therapy,” they wrote. “This was further supported by long-term (> 1 year) treated DMARD RA participants with similar community shifts.” Microbiomes, they said, are “a promising diagnostic tool” for directing DMARD therapy.
Study Goal Not Met
The goal of the study was to determine whether the microbiome of patients before they began treatment with DMARDs could predict their response to therapy. The patients were enrolled in the IMRABIOME study. Eligible patients had inflammatory arthritis symptoms for a year or less and met the clinical criteria for RA. Most patients were taking methotrexate (134 at baseline, 77 at 12 weeks), but study participants were also taking sulfasalazine (16 at baseline, 14 at 12 weeks) or hydroxychloroquine (58 at baseline, 45 at 12 weeks) either in combination or as a stand-alone treatment.
The study found a total of 26 different stool microbes that decreased in patients who had a minimal clinically important improvement (MCII) after starting DMARD therapy. At 6 weeks, the most significant declines were in Prevotella species. At 12 weeks, the greatest declines were in Streptococcus.
The researchers also developed models that used gut and oral metagenomes to predict MCII in patients starting DMARD therapy. They used a previously published microbiome dataset as a validation cohort for the model, but they acknowledged their models “were not as strong” as three previously published models. “Our findings support the hypothesis of DMARD restoration of a eubiotic gut microbiome when patient and treatment align,” the authors wrote.
They noted they had anticipated finding baseline microbiome samples that would help predict treatment responses. While baseline evaluation didn’t differentiate between responders and nonresponders, they wrote that a longitudinal analysis demonstrated changing microbiota and a positive response to therapy, with declining levels of Prevotella and Streptococcus species most pronounced at 6 and 12 weeks, respectively.
“Microbiomes provide a promising diagnostic tool for guiding therapeutic decisions in the future,” the study authors wrote.
Commentary
In commenting on the study, Gregg J. Silverman, MD, professor of medicine and pathology at the New York University School of Medicine, New York City, said it “was carefully performed, technically it was actually quite impressive, and the scale of the study actually was quite suitable.”
However, the study fell short of achieving its primary goal of using the microbiome to predict treatment response, he said. “Basically, they could not find there was anything they could correlate with clinical response rates, although they did find that the presence or absence of certain bacteria at 6 weeks or 12 weeks into treatment correlated with a clinical response,” he said.
The multiplicity of DMARDs used by the study population was “one of the complicating factors” of the study, Dr. Silverman said. “It would’ve been a much more easily interpreted study if it used just a single agent like methotrexate,” he said. “I think that’s problematic, but I do think this contributes to getting us a little further down the road of understanding how the microbiome can influence the pathogenesis of rheumatoid arthritis response to treatment.”
One of the questions surrounding the microbiome changes is whether they occurred because of the effect of the therapy itself or because the disease activity subsides, Dr. Silverman said. “So, you’re not sure if it’s cause or effect. There’s evidence to suggest that either could be true.”
This study adds to a 2022 study that found a similar effect with methotrexate, Dr. Silverman said. “They considered a lot of variables, and they considered a lot of potential confounding effects,” he said. “So, their data were well-considered, and they will actually hold up over time and contribute to the next range of studies that will be performed, no doubt, in this area.”
It would be better if those future studies focused on just one DMARD drug and studied the recovered bacteria in animal models to gain a better understanding of how they correlate to pathogenesis, Dr. Silverman added.
The study received funding from Versus Arthritis. Dr. Danckert, Dr. Freidin, and coauthors, as well as Dr. Silverman, reported no relevant financial relationships.
A version of this article appeared on Medscape.com.
FROM RHEUMATOLOGY
FDA Approves 10th Humira Biosimilar, With Interchangeability
The US Food and Drug Administration has approved the first interchangeable, high-concentration, citrate-free adalimumab biosimilar, adalimumab-ryvk (Simlandi).
This is the 10th adalimumab biosimilar approved by the regulatory agency and the first biosimilar approval in the US market for the Icelandic pharmaceutical company Alvotech in partnership with Teva Pharmaceuticals.
“An interchangeable citrate-free, high-concentration biosimilar adalimumab has the potential to change the market dynamics in a rapidly evolving environment for biosimilars in the U.S.,” said Robert Wessman, chairman and CEO of Alvotech, in a company press release on February 23.
Adalimumab-ryvk was approved in the European Union in 2021 and in Australia and Canada in 2022.
Adalimumab-ryvk is indicated for adults with rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, ulcerative colitis, Crohn’s disease, plaque psoriasis, hidradenitis suppurativa, and noninfectious intermediate and posterior uveitis and panuveitis. In pediatric patients, it is indicated for polyarticular juvenile idiopathic arthritis in children 2 years of age and older and Crohn’s disease in children 6 years of age and older.
Adalimumab-ryvk is the third Humira biosimilar overall granted interchangeability status, which allows pharmacists (depending on state law) to substitute the biosimilar for the reference product without involving the prescribing clinician. Adalimumab-adbm (Cyltezo), manufactured by Boehringer Ingelheim, and adalimumab-afzb (Abrilada), manufactured by Pfizer, were previously granted interchangeability status; however, they both are interchangeable with the low-concentration formulation of Humira, which make up only an estimated 15% of Humira prescriptions, according to a report by Goodroot.
Adalimumab-ryvk will be launched “imminently” in the United States, according to the press release, but no specific dates were provided. It is also not yet known how the biosimilar will be priced compared with Humira. Other adalimumab biosimilars have launched with discounts from 5% to 85% of Humira’s list price.
A version of this article appeared on Medscape.com.
The US Food and Drug Administration has approved the first interchangeable, high-concentration, citrate-free adalimumab biosimilar, adalimumab-ryvk (Simlandi).
This is the 10th adalimumab biosimilar approved by the regulatory agency and the first biosimilar approval in the US market for the Icelandic pharmaceutical company Alvotech in partnership with Teva Pharmaceuticals.
“An interchangeable citrate-free, high-concentration biosimilar adalimumab has the potential to change the market dynamics in a rapidly evolving environment for biosimilars in the U.S.,” said Robert Wessman, chairman and CEO of Alvotech, in a company press release on February 23.
Adalimumab-ryvk was approved in the European Union in 2021 and in Australia and Canada in 2022.
Adalimumab-ryvk is indicated for adults with rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, ulcerative colitis, Crohn’s disease, plaque psoriasis, hidradenitis suppurativa, and noninfectious intermediate and posterior uveitis and panuveitis. In pediatric patients, it is indicated for polyarticular juvenile idiopathic arthritis in children 2 years of age and older and Crohn’s disease in children 6 years of age and older.
Adalimumab-ryvk is the third Humira biosimilar overall granted interchangeability status, which allows pharmacists (depending on state law) to substitute the biosimilar for the reference product without involving the prescribing clinician. Adalimumab-adbm (Cyltezo), manufactured by Boehringer Ingelheim, and adalimumab-afzb (Abrilada), manufactured by Pfizer, were previously granted interchangeability status; however, they both are interchangeable with the low-concentration formulation of Humira, which make up only an estimated 15% of Humira prescriptions, according to a report by Goodroot.
Adalimumab-ryvk will be launched “imminently” in the United States, according to the press release, but no specific dates were provided. It is also not yet known how the biosimilar will be priced compared with Humira. Other adalimumab biosimilars have launched with discounts from 5% to 85% of Humira’s list price.
A version of this article appeared on Medscape.com.
The US Food and Drug Administration has approved the first interchangeable, high-concentration, citrate-free adalimumab biosimilar, adalimumab-ryvk (Simlandi).
This is the 10th adalimumab biosimilar approved by the regulatory agency and the first biosimilar approval in the US market for the Icelandic pharmaceutical company Alvotech in partnership with Teva Pharmaceuticals.
“An interchangeable citrate-free, high-concentration biosimilar adalimumab has the potential to change the market dynamics in a rapidly evolving environment for biosimilars in the U.S.,” said Robert Wessman, chairman and CEO of Alvotech, in a company press release on February 23.
Adalimumab-ryvk was approved in the European Union in 2021 and in Australia and Canada in 2022.
Adalimumab-ryvk is indicated for adults with rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, ulcerative colitis, Crohn’s disease, plaque psoriasis, hidradenitis suppurativa, and noninfectious intermediate and posterior uveitis and panuveitis. In pediatric patients, it is indicated for polyarticular juvenile idiopathic arthritis in children 2 years of age and older and Crohn’s disease in children 6 years of age and older.
Adalimumab-ryvk is the third Humira biosimilar overall granted interchangeability status, which allows pharmacists (depending on state law) to substitute the biosimilar for the reference product without involving the prescribing clinician. Adalimumab-adbm (Cyltezo), manufactured by Boehringer Ingelheim, and adalimumab-afzb (Abrilada), manufactured by Pfizer, were previously granted interchangeability status; however, they both are interchangeable with the low-concentration formulation of Humira, which make up only an estimated 15% of Humira prescriptions, according to a report by Goodroot.
Adalimumab-ryvk will be launched “imminently” in the United States, according to the press release, but no specific dates were provided. It is also not yet known how the biosimilar will be priced compared with Humira. Other adalimumab biosimilars have launched with discounts from 5% to 85% of Humira’s list price.
A version of this article appeared on Medscape.com.
Is Metformin a ‘Drug for All Diseases’?
In 2021 alone, clinicians wrote more than 91 million orders for the medication — up from 40 million 2004.
But is metformin just getting started? Emerging evidence suggests the drug may be effective for a much broader range of conditions beyond managing high blood glucose, including various cancers, obesity, liver disease, cardiovascular, neurodegenerative, and renal diseases. As the evidence for diverse uses accumulates, many trials have launched, with researchers looking to expand metformin’s indications and validate or explore new directions.
Metformin’s long history as a pharmaceutical includes an herbal ancestry, recognition in 1918 for its ability to lower blood glucose, being cast aside because of toxicity fears in the 1930s, rediscovery and synthesis in Europe in the 1940s, the first reported use for diabetes in 1957, and approval in the United States in 1994.
The drug has maintained its place as the preferred first-line treatment for type 2 diabetes since 2011, when it was first included in the World Health Organization’s essential medicines list.
“The focus hitherto has been primarily on its insulin sensitization effects,” Akshay Jain, MD, a clinical and research endocrinologist at TLC Diabetes and Endocrinology, in Surrey, British Columbia, Canada, told this news organization.
“The recent surge of renewed interest is in part related to its postulated effects on multiple other receptors,” he said. “In my mind, the metformin data on coronary artery disease reduction and cancer-protective effects have come farther along than other disease states.”
Cardiovascular Outcomes
Gregory G. Schwartz, MD, PhD, chief of the cardiology section at Rocky Mountain Regional VA Medical Center and professor of medicine at the University of Colorado School of Medicine in Aurora, is leading the VA-IMPACT trial. Despite metformin’s long history and widespread use, he said his study is the first placebo-controlled cardiovascular outcomes trial of the drug.
Launched in 2023, the study tests the hypothesis that metformin reduces the risk for death or nonfatal ischemic cardiovascular events in patients with prediabetes and established coronary, cerebrovascular, or peripheral artery disease, Dr. Schwartz said. The trial is being conducted at roughly 40 VA medical centers, with a planned enrollment of 7410 patients. The estimated completion date is March 2029.
“The principal mechanism of action of metformin is through activation of AMP [adenosine monophosphate]–activated protein kinase, a central pathway in metabolic regulation, cell protection, and survival,” Dr. Schwartz explained. “Experimental data have demonstrated attenuated development of atherosclerosis, reduced myocardial infarct size, improved endothelial function, and antiarrhythmic actions — none of those dependent on the presence of diabetes.”
Dr. Schwartz and his colleagues decided to test their hypothesis in people with prediabetes, rather than diabetes, to create a “true placebo-controlled comparison,” he said.
“If patients with type 2 diabetes had been chosen, there would be potential for confounding because a placebo group would require more treatment with other active antihyperglycemic medications to achieve the same degree of glycemic control as a metformin group,” Dr. Schwartz said.
“If proven efficacious in the VA-IMPACT trial, metformin could provide an inexpensive, generally safe, and well-tolerated approach to reduce cardiovascular morbidity and mortality in a large segment of the population,” Dr. Schwartz added. “Perhaps the old dog can learn some new tricks.”
Other recruiting trials looking at cardiovascular-related outcomes include Met-PEF, LIMIT, and Metformin as an Adjunctive Therapy to Catheter Ablation in Atrial Fibrillation.
Reducing Cancer Risks
Sai Yendamuri, MD, chair of the Department of Thoracic Surgery and director of the Thoracic Surgery Laboratory at Roswell Park Comprehensive Cancer Center in Buffalo, New York, is leading a phase 2 trial exploring whether metformin can prevent lung cancer in people with overweight or obesity who are at a high risk for the malignancy.
The study, which has accrued about 60% of its estimated enrollment, also will assess whether metformin can reprogram participants’ immune systems, with a view toward reducing the activity of regulatory T cells that are linked to development of tumors.
“In our preclinical and retrospective clinical data, we found that metformin had anticancer effects but only if the patients were overweight,” Dr. Yendamuri said. “In mice, we find that obesity increases regulatory T-cell function, which suppresses the immune system of the lungs. This effect is reversed by metformin.” The team is conducting the current study to examine if this happens in patients, as well. Results are expected next year.
Research is underway in other tumor types, including oral and endometrial, and brain cancers.
Preventing Alzheimer’s Disease
Cognitive function — or at least delaying its erosion — represents another front for metformin. José A. Luchsinger, MD, MPH, vice-chair for clinical and epidemiological research and director of the section on geriatrics, gerontology, and aging at Columbia University Irving Medical Center in New York City, is heading a phase 2/3 randomized controlled trial assessing the ability of the drug to prevent Alzheimer›s disease.
The study investigators hope to enroll 326 men and women aged 55-90 years with early and late mild cognitive impairment, overweight or obesity, and no diabetes.
“The hypothesis is that improving insulin and glucose levels can lead to lowering the risk of Alzheimer’s disease,” Dr. Luchsinger said. Recruitment should be complete by the end of 2024 and results are expected in late 2026.
Similar studies are underway in Europe and Asia.
Other areas of investigation, while tantalizing, are mostly in early stages, although bolstered by preclinical and mechanistic studies. The authors of a recent review on the potential mechanisms of action of metformin and existing evidence of the drug›s effectiveness — or lack thereof — in treating diseases other than diabetes, wrote: “Collectively, these data raise the question: Is metformin a drug for all diseases? It remains unclear as to whether all of these putative beneficial effects are secondary to its actions as an antihyperglycemic and insulin-sensitizing drug, or result from other cellular actions, including inhibition of mTOR (mammalian target for rapamycin), or direct antiviral actions.”
Off-Label Uses
Metformin currently is approved by the US Food and Drug Administration only for the treatment of type 2 diabetes, although it is also the only antidiabetic medication for prediabetes currently recommended by the American Diabetes Association.
Some studies currently are looking at its use in a variety of off-label indications, including obesity, gestational diabetes, weight gain from antipsychotics, and polycystic ovary syndrome.
For the most part, metformin is considered a safe drug, but it is not risk-free, Dr. Jain cautioned.
“Although it would certainly be helpful to see if this inexpensive medication that’s universally available can help in disease states, one shouldn’t overlook the potential risk of adverse effects, such as gastrointestinal, potential vitamin B12 deficiency, blunting of skeletal muscle development and the rare risk of lactic acidosis in those with kidney impairment,” he said.
“Similarly, with recent reports of the carcinogenic potential of certain formulations of long-acting metformin that contained NDMA [N-nitrosodimethylamine], it would be imperative that these kinks are removed before we incorporate metformin as the gift that keeps giving.”
Dr. Jain reported financial relationships with Abbott, Amgen, Boehringer Ingelheim, Dexcom, Eli Lilly, Janssen, Medtronic, Merck, and Novo Nordisk. Dr. Yendamuri disclosed serving on the scientific advisory board member of Karkinos Healthcare and research funding from Lumeda for the metformin study. Dr. Luchsinger reported receiving donated metformin and matching placebo from EMD Serono, a subsidiary of Merck, for the MAP study. Dr. Schwartz received research support from the US Department of Veterans Affairs as National Chair of the VA-IMPACT trial.
A version of this article appeared on Medscape.com.
In 2021 alone, clinicians wrote more than 91 million orders for the medication — up from 40 million 2004.
But is metformin just getting started? Emerging evidence suggests the drug may be effective for a much broader range of conditions beyond managing high blood glucose, including various cancers, obesity, liver disease, cardiovascular, neurodegenerative, and renal diseases. As the evidence for diverse uses accumulates, many trials have launched, with researchers looking to expand metformin’s indications and validate or explore new directions.
Metformin’s long history as a pharmaceutical includes an herbal ancestry, recognition in 1918 for its ability to lower blood glucose, being cast aside because of toxicity fears in the 1930s, rediscovery and synthesis in Europe in the 1940s, the first reported use for diabetes in 1957, and approval in the United States in 1994.
The drug has maintained its place as the preferred first-line treatment for type 2 diabetes since 2011, when it was first included in the World Health Organization’s essential medicines list.
“The focus hitherto has been primarily on its insulin sensitization effects,” Akshay Jain, MD, a clinical and research endocrinologist at TLC Diabetes and Endocrinology, in Surrey, British Columbia, Canada, told this news organization.
“The recent surge of renewed interest is in part related to its postulated effects on multiple other receptors,” he said. “In my mind, the metformin data on coronary artery disease reduction and cancer-protective effects have come farther along than other disease states.”
Cardiovascular Outcomes
Gregory G. Schwartz, MD, PhD, chief of the cardiology section at Rocky Mountain Regional VA Medical Center and professor of medicine at the University of Colorado School of Medicine in Aurora, is leading the VA-IMPACT trial. Despite metformin’s long history and widespread use, he said his study is the first placebo-controlled cardiovascular outcomes trial of the drug.
Launched in 2023, the study tests the hypothesis that metformin reduces the risk for death or nonfatal ischemic cardiovascular events in patients with prediabetes and established coronary, cerebrovascular, or peripheral artery disease, Dr. Schwartz said. The trial is being conducted at roughly 40 VA medical centers, with a planned enrollment of 7410 patients. The estimated completion date is March 2029.
“The principal mechanism of action of metformin is through activation of AMP [adenosine monophosphate]–activated protein kinase, a central pathway in metabolic regulation, cell protection, and survival,” Dr. Schwartz explained. “Experimental data have demonstrated attenuated development of atherosclerosis, reduced myocardial infarct size, improved endothelial function, and antiarrhythmic actions — none of those dependent on the presence of diabetes.”
Dr. Schwartz and his colleagues decided to test their hypothesis in people with prediabetes, rather than diabetes, to create a “true placebo-controlled comparison,” he said.
“If patients with type 2 diabetes had been chosen, there would be potential for confounding because a placebo group would require more treatment with other active antihyperglycemic medications to achieve the same degree of glycemic control as a metformin group,” Dr. Schwartz said.
“If proven efficacious in the VA-IMPACT trial, metformin could provide an inexpensive, generally safe, and well-tolerated approach to reduce cardiovascular morbidity and mortality in a large segment of the population,” Dr. Schwartz added. “Perhaps the old dog can learn some new tricks.”
Other recruiting trials looking at cardiovascular-related outcomes include Met-PEF, LIMIT, and Metformin as an Adjunctive Therapy to Catheter Ablation in Atrial Fibrillation.
Reducing Cancer Risks
Sai Yendamuri, MD, chair of the Department of Thoracic Surgery and director of the Thoracic Surgery Laboratory at Roswell Park Comprehensive Cancer Center in Buffalo, New York, is leading a phase 2 trial exploring whether metformin can prevent lung cancer in people with overweight or obesity who are at a high risk for the malignancy.
The study, which has accrued about 60% of its estimated enrollment, also will assess whether metformin can reprogram participants’ immune systems, with a view toward reducing the activity of regulatory T cells that are linked to development of tumors.
“In our preclinical and retrospective clinical data, we found that metformin had anticancer effects but only if the patients were overweight,” Dr. Yendamuri said. “In mice, we find that obesity increases regulatory T-cell function, which suppresses the immune system of the lungs. This effect is reversed by metformin.” The team is conducting the current study to examine if this happens in patients, as well. Results are expected next year.
Research is underway in other tumor types, including oral and endometrial, and brain cancers.
Preventing Alzheimer’s Disease
Cognitive function — or at least delaying its erosion — represents another front for metformin. José A. Luchsinger, MD, MPH, vice-chair for clinical and epidemiological research and director of the section on geriatrics, gerontology, and aging at Columbia University Irving Medical Center in New York City, is heading a phase 2/3 randomized controlled trial assessing the ability of the drug to prevent Alzheimer›s disease.
The study investigators hope to enroll 326 men and women aged 55-90 years with early and late mild cognitive impairment, overweight or obesity, and no diabetes.
“The hypothesis is that improving insulin and glucose levels can lead to lowering the risk of Alzheimer’s disease,” Dr. Luchsinger said. Recruitment should be complete by the end of 2024 and results are expected in late 2026.
Similar studies are underway in Europe and Asia.
Other areas of investigation, while tantalizing, are mostly in early stages, although bolstered by preclinical and mechanistic studies. The authors of a recent review on the potential mechanisms of action of metformin and existing evidence of the drug›s effectiveness — or lack thereof — in treating diseases other than diabetes, wrote: “Collectively, these data raise the question: Is metformin a drug for all diseases? It remains unclear as to whether all of these putative beneficial effects are secondary to its actions as an antihyperglycemic and insulin-sensitizing drug, or result from other cellular actions, including inhibition of mTOR (mammalian target for rapamycin), or direct antiviral actions.”
Off-Label Uses
Metformin currently is approved by the US Food and Drug Administration only for the treatment of type 2 diabetes, although it is also the only antidiabetic medication for prediabetes currently recommended by the American Diabetes Association.
Some studies currently are looking at its use in a variety of off-label indications, including obesity, gestational diabetes, weight gain from antipsychotics, and polycystic ovary syndrome.
For the most part, metformin is considered a safe drug, but it is not risk-free, Dr. Jain cautioned.
“Although it would certainly be helpful to see if this inexpensive medication that’s universally available can help in disease states, one shouldn’t overlook the potential risk of adverse effects, such as gastrointestinal, potential vitamin B12 deficiency, blunting of skeletal muscle development and the rare risk of lactic acidosis in those with kidney impairment,” he said.
“Similarly, with recent reports of the carcinogenic potential of certain formulations of long-acting metformin that contained NDMA [N-nitrosodimethylamine], it would be imperative that these kinks are removed before we incorporate metformin as the gift that keeps giving.”
Dr. Jain reported financial relationships with Abbott, Amgen, Boehringer Ingelheim, Dexcom, Eli Lilly, Janssen, Medtronic, Merck, and Novo Nordisk. Dr. Yendamuri disclosed serving on the scientific advisory board member of Karkinos Healthcare and research funding from Lumeda for the metformin study. Dr. Luchsinger reported receiving donated metformin and matching placebo from EMD Serono, a subsidiary of Merck, for the MAP study. Dr. Schwartz received research support from the US Department of Veterans Affairs as National Chair of the VA-IMPACT trial.
A version of this article appeared on Medscape.com.
In 2021 alone, clinicians wrote more than 91 million orders for the medication — up from 40 million 2004.
But is metformin just getting started? Emerging evidence suggests the drug may be effective for a much broader range of conditions beyond managing high blood glucose, including various cancers, obesity, liver disease, cardiovascular, neurodegenerative, and renal diseases. As the evidence for diverse uses accumulates, many trials have launched, with researchers looking to expand metformin’s indications and validate or explore new directions.
Metformin’s long history as a pharmaceutical includes an herbal ancestry, recognition in 1918 for its ability to lower blood glucose, being cast aside because of toxicity fears in the 1930s, rediscovery and synthesis in Europe in the 1940s, the first reported use for diabetes in 1957, and approval in the United States in 1994.
The drug has maintained its place as the preferred first-line treatment for type 2 diabetes since 2011, when it was first included in the World Health Organization’s essential medicines list.
“The focus hitherto has been primarily on its insulin sensitization effects,” Akshay Jain, MD, a clinical and research endocrinologist at TLC Diabetes and Endocrinology, in Surrey, British Columbia, Canada, told this news organization.
“The recent surge of renewed interest is in part related to its postulated effects on multiple other receptors,” he said. “In my mind, the metformin data on coronary artery disease reduction and cancer-protective effects have come farther along than other disease states.”
Cardiovascular Outcomes
Gregory G. Schwartz, MD, PhD, chief of the cardiology section at Rocky Mountain Regional VA Medical Center and professor of medicine at the University of Colorado School of Medicine in Aurora, is leading the VA-IMPACT trial. Despite metformin’s long history and widespread use, he said his study is the first placebo-controlled cardiovascular outcomes trial of the drug.
Launched in 2023, the study tests the hypothesis that metformin reduces the risk for death or nonfatal ischemic cardiovascular events in patients with prediabetes and established coronary, cerebrovascular, or peripheral artery disease, Dr. Schwartz said. The trial is being conducted at roughly 40 VA medical centers, with a planned enrollment of 7410 patients. The estimated completion date is March 2029.
“The principal mechanism of action of metformin is through activation of AMP [adenosine monophosphate]–activated protein kinase, a central pathway in metabolic regulation, cell protection, and survival,” Dr. Schwartz explained. “Experimental data have demonstrated attenuated development of atherosclerosis, reduced myocardial infarct size, improved endothelial function, and antiarrhythmic actions — none of those dependent on the presence of diabetes.”
Dr. Schwartz and his colleagues decided to test their hypothesis in people with prediabetes, rather than diabetes, to create a “true placebo-controlled comparison,” he said.
“If patients with type 2 diabetes had been chosen, there would be potential for confounding because a placebo group would require more treatment with other active antihyperglycemic medications to achieve the same degree of glycemic control as a metformin group,” Dr. Schwartz said.
“If proven efficacious in the VA-IMPACT trial, metformin could provide an inexpensive, generally safe, and well-tolerated approach to reduce cardiovascular morbidity and mortality in a large segment of the population,” Dr. Schwartz added. “Perhaps the old dog can learn some new tricks.”
Other recruiting trials looking at cardiovascular-related outcomes include Met-PEF, LIMIT, and Metformin as an Adjunctive Therapy to Catheter Ablation in Atrial Fibrillation.
Reducing Cancer Risks
Sai Yendamuri, MD, chair of the Department of Thoracic Surgery and director of the Thoracic Surgery Laboratory at Roswell Park Comprehensive Cancer Center in Buffalo, New York, is leading a phase 2 trial exploring whether metformin can prevent lung cancer in people with overweight or obesity who are at a high risk for the malignancy.
The study, which has accrued about 60% of its estimated enrollment, also will assess whether metformin can reprogram participants’ immune systems, with a view toward reducing the activity of regulatory T cells that are linked to development of tumors.
“In our preclinical and retrospective clinical data, we found that metformin had anticancer effects but only if the patients were overweight,” Dr. Yendamuri said. “In mice, we find that obesity increases regulatory T-cell function, which suppresses the immune system of the lungs. This effect is reversed by metformin.” The team is conducting the current study to examine if this happens in patients, as well. Results are expected next year.
Research is underway in other tumor types, including oral and endometrial, and brain cancers.
Preventing Alzheimer’s Disease
Cognitive function — or at least delaying its erosion — represents another front for metformin. José A. Luchsinger, MD, MPH, vice-chair for clinical and epidemiological research and director of the section on geriatrics, gerontology, and aging at Columbia University Irving Medical Center in New York City, is heading a phase 2/3 randomized controlled trial assessing the ability of the drug to prevent Alzheimer›s disease.
The study investigators hope to enroll 326 men and women aged 55-90 years with early and late mild cognitive impairment, overweight or obesity, and no diabetes.
“The hypothesis is that improving insulin and glucose levels can lead to lowering the risk of Alzheimer’s disease,” Dr. Luchsinger said. Recruitment should be complete by the end of 2024 and results are expected in late 2026.
Similar studies are underway in Europe and Asia.
Other areas of investigation, while tantalizing, are mostly in early stages, although bolstered by preclinical and mechanistic studies. The authors of a recent review on the potential mechanisms of action of metformin and existing evidence of the drug›s effectiveness — or lack thereof — in treating diseases other than diabetes, wrote: “Collectively, these data raise the question: Is metformin a drug for all diseases? It remains unclear as to whether all of these putative beneficial effects are secondary to its actions as an antihyperglycemic and insulin-sensitizing drug, or result from other cellular actions, including inhibition of mTOR (mammalian target for rapamycin), or direct antiviral actions.”
Off-Label Uses
Metformin currently is approved by the US Food and Drug Administration only for the treatment of type 2 diabetes, although it is also the only antidiabetic medication for prediabetes currently recommended by the American Diabetes Association.
Some studies currently are looking at its use in a variety of off-label indications, including obesity, gestational diabetes, weight gain from antipsychotics, and polycystic ovary syndrome.
For the most part, metformin is considered a safe drug, but it is not risk-free, Dr. Jain cautioned.
“Although it would certainly be helpful to see if this inexpensive medication that’s universally available can help in disease states, one shouldn’t overlook the potential risk of adverse effects, such as gastrointestinal, potential vitamin B12 deficiency, blunting of skeletal muscle development and the rare risk of lactic acidosis in those with kidney impairment,” he said.
“Similarly, with recent reports of the carcinogenic potential of certain formulations of long-acting metformin that contained NDMA [N-nitrosodimethylamine], it would be imperative that these kinks are removed before we incorporate metformin as the gift that keeps giving.”
Dr. Jain reported financial relationships with Abbott, Amgen, Boehringer Ingelheim, Dexcom, Eli Lilly, Janssen, Medtronic, Merck, and Novo Nordisk. Dr. Yendamuri disclosed serving on the scientific advisory board member of Karkinos Healthcare and research funding from Lumeda for the metformin study. Dr. Luchsinger reported receiving donated metformin and matching placebo from EMD Serono, a subsidiary of Merck, for the MAP study. Dr. Schwartz received research support from the US Department of Veterans Affairs as National Chair of the VA-IMPACT trial.
A version of this article appeared on Medscape.com.
Ixekizumab’s Final Safety Results Reported Across 25 Trials in Psoriasis, PsA, Axial SpA
TOPLINE:
Pooled data from 9225 adults with psoriasis (PsO), psoriatic arthritis (PsA), and axial spondyloarthritis (axSpA) showed no new safety signals with extended exposure to ixekizumab (Taltz).
METHODOLOGY:
- Researchers combined patient data from 25 randomized, controlled trials of the safety and effectiveness of at least one dose of ixekizumab in adults with PsO (n = 6892), PsA (n = 1401), and axSpA (n = 932).
- The study population included patients with a mean age of approximately 43-49 years; at least 49% were male and at least 74% were White across the three conditions.
- Patients’ median duration of ixekizumab exposure was 1.3 years for PsO, 1.4 years for PsA, and 2.7 years for axSpA, with data up to 6 years for PsO and up to 3 years for PsA and axSpA.
- The primary outcomes were exposure-adjusted incidence rates per 100 patient-years overall and at successive year intervals for treatment-emergent adverse events, serious adverse events, and selected adverse events of interest.
TAKEAWAY:
- The incidence rate per 100 person-years for any treatment-emergent adverse event was 32.5 for PsO, 50.3 for PsA, and 38.0 for axSpA; these did not increase with lengthier exposure.
- The incidence rates for serious adverse events for patients with PsO, PsA, or axSpA were 5.4, 6.0, and 4.8 per 100 person-years, respectively.
- A total of 45 deaths were reported across the studies, including 36 in patients with PsO, six with PsA, and three with axSpA.
- Infections were the most common treatment-emergent adverse events across all patient groups, reported in patients at rates of 62.5% with PsO, 52.4% with PsA, and 57.9% with axSpA; incidence of infections did not increase over time.
IN PRACTICE:
“These final, end-of-study program results surrounding the long-term use of [ixekizumab] in patients with PsO, PsA, and axSpA should serve as an important point of reference for physicians considering [ixekizumab],” the researchers wrote.
SOURCE:
The lead author on the study was Atul Deodhar, MD, of Oregon Health & Science University, Portland. The study was published online on February 12 in Arthritis Research & Therapy.
LIMITATIONS:
Study limitations included the small sample sizes and short treatment durations in some studies, the primarily White study population, the inability to stratify risk, the lack of a long-term comparator, and potential survivor bias.
DISCLOSURES:
The studies in the review were supported by Eli Lilly. Lead author Dr. Deodhar disclosed an honorarium and serving on advisory boards at AbbVie, Bristol-Myers Squibb, Eli Lilly, Janssen, Novartis, Pfizer, and UCB, as well as research grants from AbbVie, Bristol-Myers Squibb, Celgene, Eli Lilly, Janssen, MoonLake, Novartis, Pfizer, and UCB.
A version of this article appeared on Medscape.com.
TOPLINE:
Pooled data from 9225 adults with psoriasis (PsO), psoriatic arthritis (PsA), and axial spondyloarthritis (axSpA) showed no new safety signals with extended exposure to ixekizumab (Taltz).
METHODOLOGY:
- Researchers combined patient data from 25 randomized, controlled trials of the safety and effectiveness of at least one dose of ixekizumab in adults with PsO (n = 6892), PsA (n = 1401), and axSpA (n = 932).
- The study population included patients with a mean age of approximately 43-49 years; at least 49% were male and at least 74% were White across the three conditions.
- Patients’ median duration of ixekizumab exposure was 1.3 years for PsO, 1.4 years for PsA, and 2.7 years for axSpA, with data up to 6 years for PsO and up to 3 years for PsA and axSpA.
- The primary outcomes were exposure-adjusted incidence rates per 100 patient-years overall and at successive year intervals for treatment-emergent adverse events, serious adverse events, and selected adverse events of interest.
TAKEAWAY:
- The incidence rate per 100 person-years for any treatment-emergent adverse event was 32.5 for PsO, 50.3 for PsA, and 38.0 for axSpA; these did not increase with lengthier exposure.
- The incidence rates for serious adverse events for patients with PsO, PsA, or axSpA were 5.4, 6.0, and 4.8 per 100 person-years, respectively.
- A total of 45 deaths were reported across the studies, including 36 in patients with PsO, six with PsA, and three with axSpA.
- Infections were the most common treatment-emergent adverse events across all patient groups, reported in patients at rates of 62.5% with PsO, 52.4% with PsA, and 57.9% with axSpA; incidence of infections did not increase over time.
IN PRACTICE:
“These final, end-of-study program results surrounding the long-term use of [ixekizumab] in patients with PsO, PsA, and axSpA should serve as an important point of reference for physicians considering [ixekizumab],” the researchers wrote.
SOURCE:
The lead author on the study was Atul Deodhar, MD, of Oregon Health & Science University, Portland. The study was published online on February 12 in Arthritis Research & Therapy.
LIMITATIONS:
Study limitations included the small sample sizes and short treatment durations in some studies, the primarily White study population, the inability to stratify risk, the lack of a long-term comparator, and potential survivor bias.
DISCLOSURES:
The studies in the review were supported by Eli Lilly. Lead author Dr. Deodhar disclosed an honorarium and serving on advisory boards at AbbVie, Bristol-Myers Squibb, Eli Lilly, Janssen, Novartis, Pfizer, and UCB, as well as research grants from AbbVie, Bristol-Myers Squibb, Celgene, Eli Lilly, Janssen, MoonLake, Novartis, Pfizer, and UCB.
A version of this article appeared on Medscape.com.
TOPLINE:
Pooled data from 9225 adults with psoriasis (PsO), psoriatic arthritis (PsA), and axial spondyloarthritis (axSpA) showed no new safety signals with extended exposure to ixekizumab (Taltz).
METHODOLOGY:
- Researchers combined patient data from 25 randomized, controlled trials of the safety and effectiveness of at least one dose of ixekizumab in adults with PsO (n = 6892), PsA (n = 1401), and axSpA (n = 932).
- The study population included patients with a mean age of approximately 43-49 years; at least 49% were male and at least 74% were White across the three conditions.
- Patients’ median duration of ixekizumab exposure was 1.3 years for PsO, 1.4 years for PsA, and 2.7 years for axSpA, with data up to 6 years for PsO and up to 3 years for PsA and axSpA.
- The primary outcomes were exposure-adjusted incidence rates per 100 patient-years overall and at successive year intervals for treatment-emergent adverse events, serious adverse events, and selected adverse events of interest.
TAKEAWAY:
- The incidence rate per 100 person-years for any treatment-emergent adverse event was 32.5 for PsO, 50.3 for PsA, and 38.0 for axSpA; these did not increase with lengthier exposure.
- The incidence rates for serious adverse events for patients with PsO, PsA, or axSpA were 5.4, 6.0, and 4.8 per 100 person-years, respectively.
- A total of 45 deaths were reported across the studies, including 36 in patients with PsO, six with PsA, and three with axSpA.
- Infections were the most common treatment-emergent adverse events across all patient groups, reported in patients at rates of 62.5% with PsO, 52.4% with PsA, and 57.9% with axSpA; incidence of infections did not increase over time.
IN PRACTICE:
“These final, end-of-study program results surrounding the long-term use of [ixekizumab] in patients with PsO, PsA, and axSpA should serve as an important point of reference for physicians considering [ixekizumab],” the researchers wrote.
SOURCE:
The lead author on the study was Atul Deodhar, MD, of Oregon Health & Science University, Portland. The study was published online on February 12 in Arthritis Research & Therapy.
LIMITATIONS:
Study limitations included the small sample sizes and short treatment durations in some studies, the primarily White study population, the inability to stratify risk, the lack of a long-term comparator, and potential survivor bias.
DISCLOSURES:
The studies in the review were supported by Eli Lilly. Lead author Dr. Deodhar disclosed an honorarium and serving on advisory boards at AbbVie, Bristol-Myers Squibb, Eli Lilly, Janssen, Novartis, Pfizer, and UCB, as well as research grants from AbbVie, Bristol-Myers Squibb, Celgene, Eli Lilly, Janssen, MoonLake, Novartis, Pfizer, and UCB.
A version of this article appeared on Medscape.com.
Different cultures, same wiring
Some things are universal, or at least worldwide.
She didn’t speak a word of English, but I don’t speak any Mandarin. Fortunately, her concerned son was fluent in both.
A nice lady in her 60s, here from China to visit her son and his family for a month. The visit was going fine until she abruptly developed double vision. Through the modern miracle of email she contacted her doctor in Beijing, who told her to find a neurologist here or go to an ER.
I’d had a last minute cancellation a few minutes before her son called and so was able to see her that afternoon. Both were scared that I was going to admit her to a hospital.
Fortunately, people are wired the same no matter where they’re from. The electrical fibers of the nervous system are predictable across international borders, as are the maladies.
A history and exam made the diagnosis of a diabetic cranial nerve palsy most likely, and I was able to reassure them. I ordered the usual imaging studies (fortunately she’d bought travelers’ insurance in advance). As anticipated, they were normal.
Her son and I spoke by phone to close things out, with her in the background and him translating between us. By the time she left 2 weeks later the symptoms were resolving. I made sure she went home with copies of my notes and the MRI reports, figuring someone there would be able to translate them for her physician.
These sorts of encounters are uncommon in my little solo practice, but still drive home the point that people around the world have more in common than not.
Not to mention families. The mother traveling around the world to see her son and grandchildren. The child concerned for the welfare of his parent and helping her get care. These, too, are human universals, regardless of the language spoken. There isn’t a culture on Earth that doesn’t value family connections, nor is there one that didn’t develop (albeit in different forms) doctors.
The human population is 8 billion. Everyone is different, and yet everyone, overall, is the same. Fellow travelers on a small planet.
Dr. Block has a solo neurology practice in Scottsdale, Ariz.
Some things are universal, or at least worldwide.
She didn’t speak a word of English, but I don’t speak any Mandarin. Fortunately, her concerned son was fluent in both.
A nice lady in her 60s, here from China to visit her son and his family for a month. The visit was going fine until she abruptly developed double vision. Through the modern miracle of email she contacted her doctor in Beijing, who told her to find a neurologist here or go to an ER.
I’d had a last minute cancellation a few minutes before her son called and so was able to see her that afternoon. Both were scared that I was going to admit her to a hospital.
Fortunately, people are wired the same no matter where they’re from. The electrical fibers of the nervous system are predictable across international borders, as are the maladies.
A history and exam made the diagnosis of a diabetic cranial nerve palsy most likely, and I was able to reassure them. I ordered the usual imaging studies (fortunately she’d bought travelers’ insurance in advance). As anticipated, they were normal.
Her son and I spoke by phone to close things out, with her in the background and him translating between us. By the time she left 2 weeks later the symptoms were resolving. I made sure she went home with copies of my notes and the MRI reports, figuring someone there would be able to translate them for her physician.
These sorts of encounters are uncommon in my little solo practice, but still drive home the point that people around the world have more in common than not.
Not to mention families. The mother traveling around the world to see her son and grandchildren. The child concerned for the welfare of his parent and helping her get care. These, too, are human universals, regardless of the language spoken. There isn’t a culture on Earth that doesn’t value family connections, nor is there one that didn’t develop (albeit in different forms) doctors.
The human population is 8 billion. Everyone is different, and yet everyone, overall, is the same. Fellow travelers on a small planet.
Dr. Block has a solo neurology practice in Scottsdale, Ariz.
Some things are universal, or at least worldwide.
She didn’t speak a word of English, but I don’t speak any Mandarin. Fortunately, her concerned son was fluent in both.
A nice lady in her 60s, here from China to visit her son and his family for a month. The visit was going fine until she abruptly developed double vision. Through the modern miracle of email she contacted her doctor in Beijing, who told her to find a neurologist here or go to an ER.
I’d had a last minute cancellation a few minutes before her son called and so was able to see her that afternoon. Both were scared that I was going to admit her to a hospital.
Fortunately, people are wired the same no matter where they’re from. The electrical fibers of the nervous system are predictable across international borders, as are the maladies.
A history and exam made the diagnosis of a diabetic cranial nerve palsy most likely, and I was able to reassure them. I ordered the usual imaging studies (fortunately she’d bought travelers’ insurance in advance). As anticipated, they were normal.
Her son and I spoke by phone to close things out, with her in the background and him translating between us. By the time she left 2 weeks later the symptoms were resolving. I made sure she went home with copies of my notes and the MRI reports, figuring someone there would be able to translate them for her physician.
These sorts of encounters are uncommon in my little solo practice, but still drive home the point that people around the world have more in common than not.
Not to mention families. The mother traveling around the world to see her son and grandchildren. The child concerned for the welfare of his parent and helping her get care. These, too, are human universals, regardless of the language spoken. There isn’t a culture on Earth that doesn’t value family connections, nor is there one that didn’t develop (albeit in different forms) doctors.
The human population is 8 billion. Everyone is different, and yet everyone, overall, is the same. Fellow travelers on a small planet.
Dr. Block has a solo neurology practice in Scottsdale, Ariz.
Reduced-Dose Vaccines Protect Patients With HIV Against Mpox
The smallpox vaccine effectively induces immunity against mpox virus infection (formerly simian smallpox) in patients with human immunodeficiency virus (HIV) infection, although patients with lymphocyte counts below 500 cells/mm3 require booster doses, according to data from a study published in the Journal of Medical Virology.
The data come from the prospective observational study conducted by researchers at the Infection Biology Laboratory of the Department of Medicine and Life Sciences at Pompeu Fabra University and the HIV Unit of the Hospital del Mar Medical Research Institute in Barcelona, Spain. The investigators analyzed T-cell responses induced by vaccination with JYNNEOS.
Despite the substantial decrease in the reporting frequency of mpox cases from the global peak in August 2022 (30,894 cases) to 804 monthly cases in the last six months of 2023, mpox continues to circulate, and there is no specific vaccine. The JYNNEOS vaccine, with protective cross-reactivity against orthopoxviruses, is approved by the US Food and Drug Administration and the European Medicines Agency for the prevention of smallpox and mpox in adults at high risk for infection.
During the 2022 outbreak in the United States and Europe, vaccine shortages led to the emergency use authorization of a lower intradermal dose. This strategy was aimed at increasing vaccine supply up to fivefold.
Further clinical trials are needed to evaluate responses to JYNNEOS vaccination and compare different administration routes in patients with HIV infection. Protecting this population against mpox is a priority because people with high viral loads or loCD4+ T-lymphocyte counts are especially susceptible to severe disease.
Vaccination Responses
The study assessed the immune response to the JYNNEOS vaccine in patients with HIV who were receiving antiretroviral therapy as outpatients at the Infectious Diseases Unit of Hospital del Mar in Barcelona, Spain. Participants had viral loads controlled by antiretroviral therapy and CD4+ T-lymphocyte counts ≤ 500/mm3 (loCD4 group) or ≥ 500/mm3 (hiCD4 group) in blood. Vaccine responses were compared with those of vaccinated controls without the disease. The study included cases that received the standard subcutaneous vaccine (before August 2022) or the emergency dose-saving intradermal vaccine after its approval in August 2022.
The results demonstrated that the intradermal dose-saving vaccination route is preferable to the subcutaneous route and that patients in the loCD4 group may require at least one booster to generate an efficient response of specific T cells for mpox, wrote the authors.
“This study has two relevant points,” study author Robert Güerri-Fernandez, MD, PhD, head of infectious diseases at the Hospital del Mar Medical Research Institute, told this news organization. “In the subgroup of patients with HIV with effective treatment but without an immune response (ie, loCD4), the vaccine response is worse than in people who have recovered immunity or do not have HIV. Therefore, they need a booster dose.
“The second point is that the intradermal route with one-fifth of the standard subcutaneous dose has a better immune response than the standard subcutaneous route.” He added that it was a good strategy to save doses and be able to vaccinate many more people when vaccine shortages occurred.
“A general conclusion cannot be drawn,” he said. “It needs to be validated with many more subjects, of course, but in some way, it reinforced our confidence in the strategy of health authorities to promote intradermal vaccination. There we had evidence that the patients we were vaccinating intradermally were responding well.”
In Spain, although there is no shortage of vaccines today, they continue to be administered intradermally with a fractionated dose equivalent to one fifth of a standard dose, said Dr. Güerri-Fernandez.
However, in his opinion, observations regarding the two administration routes signal a need for further research. The main message should be that for patients with HIV infection who do not have an immune response, the vaccine response is incomplete, and they need booster doses as well as monitoring of the vaccine immune response, said Dr. Güerri-Fernandez.
More Studies Required
The research, which prospectively collected data and blood samples from patients with HIV who received the JYNNEOS vaccine, is small and included only 24 patients with HIV infection, with seven hospital workers who also received the vaccine and seven unvaccinated individuals as controls. “I am one of the control subjects of the study, and intradermal vaccination is not especially pleasant,” said Dr. Güerri-Fernandez. “It is a very innervated area, and the moment of introducing the liquid is uncomfortable. But it is perfectly bearable.”
Outpatient HIV-infected patients from the Infectious Diseases Unit of Hospital del Mar on antiretroviral therapy and with undetectable viral loads were grouped according to their CD4+ T-lymphocyte counts. Those with CD4+ T-lymphocyte counts ≤ 500/mm3 required at least one booster vaccine to exhibit efficient virus-specific T-lymphocyte responses. The magnitude of the T-cell response after this booster correlated directly with the CD4+ T-lymphocyte count of those vaccinated.
For Argentine infectious disease specialist Julián García, MD, clinical researcher at the Huésped Foundation in Buenos Aires, Argentina, who did not participate in the study, it is always productive to know that T-cell responses develop in patients with HIV infection, with CD4+ T-lymphocyte counts > and < 500/mm3, through an intradermal administration route.
Dr. García emphasized that the most novel aspect is that the JYNNEOS vaccine induces a specific T-cell response in patients with HIV infection that increases with higher CD4+ T-lymphocyte levels. However, he noted that the number of patients was less than 10 in most study groups, and the control group had only intradermal administration, which limits the interpretation of the results. “It will be necessary to verify this in studies with larger groups with control groups from all routes and with a correlate of protection.”
Dr. García referred to this latter point as a significant source of uncertainty. “The study is fundamentally based on the cellular response, but nowadays, there is no immune correlate of real-life protection.” He concluded that the study builds knowledge, which is essential for a vaccine that began to be used for mpox and the effectiveness of which is based on estimates.
Dr. Güerri-Fernandez and Dr. Garcia declared no relevant financial conflicts of interest.
This story was translated from the Medscape Spanish edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.
The smallpox vaccine effectively induces immunity against mpox virus infection (formerly simian smallpox) in patients with human immunodeficiency virus (HIV) infection, although patients with lymphocyte counts below 500 cells/mm3 require booster doses, according to data from a study published in the Journal of Medical Virology.
The data come from the prospective observational study conducted by researchers at the Infection Biology Laboratory of the Department of Medicine and Life Sciences at Pompeu Fabra University and the HIV Unit of the Hospital del Mar Medical Research Institute in Barcelona, Spain. The investigators analyzed T-cell responses induced by vaccination with JYNNEOS.
Despite the substantial decrease in the reporting frequency of mpox cases from the global peak in August 2022 (30,894 cases) to 804 monthly cases in the last six months of 2023, mpox continues to circulate, and there is no specific vaccine. The JYNNEOS vaccine, with protective cross-reactivity against orthopoxviruses, is approved by the US Food and Drug Administration and the European Medicines Agency for the prevention of smallpox and mpox in adults at high risk for infection.
During the 2022 outbreak in the United States and Europe, vaccine shortages led to the emergency use authorization of a lower intradermal dose. This strategy was aimed at increasing vaccine supply up to fivefold.
Further clinical trials are needed to evaluate responses to JYNNEOS vaccination and compare different administration routes in patients with HIV infection. Protecting this population against mpox is a priority because people with high viral loads or loCD4+ T-lymphocyte counts are especially susceptible to severe disease.
Vaccination Responses
The study assessed the immune response to the JYNNEOS vaccine in patients with HIV who were receiving antiretroviral therapy as outpatients at the Infectious Diseases Unit of Hospital del Mar in Barcelona, Spain. Participants had viral loads controlled by antiretroviral therapy and CD4+ T-lymphocyte counts ≤ 500/mm3 (loCD4 group) or ≥ 500/mm3 (hiCD4 group) in blood. Vaccine responses were compared with those of vaccinated controls without the disease. The study included cases that received the standard subcutaneous vaccine (before August 2022) or the emergency dose-saving intradermal vaccine after its approval in August 2022.
The results demonstrated that the intradermal dose-saving vaccination route is preferable to the subcutaneous route and that patients in the loCD4 group may require at least one booster to generate an efficient response of specific T cells for mpox, wrote the authors.
“This study has two relevant points,” study author Robert Güerri-Fernandez, MD, PhD, head of infectious diseases at the Hospital del Mar Medical Research Institute, told this news organization. “In the subgroup of patients with HIV with effective treatment but without an immune response (ie, loCD4), the vaccine response is worse than in people who have recovered immunity or do not have HIV. Therefore, they need a booster dose.
“The second point is that the intradermal route with one-fifth of the standard subcutaneous dose has a better immune response than the standard subcutaneous route.” He added that it was a good strategy to save doses and be able to vaccinate many more people when vaccine shortages occurred.
“A general conclusion cannot be drawn,” he said. “It needs to be validated with many more subjects, of course, but in some way, it reinforced our confidence in the strategy of health authorities to promote intradermal vaccination. There we had evidence that the patients we were vaccinating intradermally were responding well.”
In Spain, although there is no shortage of vaccines today, they continue to be administered intradermally with a fractionated dose equivalent to one fifth of a standard dose, said Dr. Güerri-Fernandez.
However, in his opinion, observations regarding the two administration routes signal a need for further research. The main message should be that for patients with HIV infection who do not have an immune response, the vaccine response is incomplete, and they need booster doses as well as monitoring of the vaccine immune response, said Dr. Güerri-Fernandez.
More Studies Required
The research, which prospectively collected data and blood samples from patients with HIV who received the JYNNEOS vaccine, is small and included only 24 patients with HIV infection, with seven hospital workers who also received the vaccine and seven unvaccinated individuals as controls. “I am one of the control subjects of the study, and intradermal vaccination is not especially pleasant,” said Dr. Güerri-Fernandez. “It is a very innervated area, and the moment of introducing the liquid is uncomfortable. But it is perfectly bearable.”
Outpatient HIV-infected patients from the Infectious Diseases Unit of Hospital del Mar on antiretroviral therapy and with undetectable viral loads were grouped according to their CD4+ T-lymphocyte counts. Those with CD4+ T-lymphocyte counts ≤ 500/mm3 required at least one booster vaccine to exhibit efficient virus-specific T-lymphocyte responses. The magnitude of the T-cell response after this booster correlated directly with the CD4+ T-lymphocyte count of those vaccinated.
For Argentine infectious disease specialist Julián García, MD, clinical researcher at the Huésped Foundation in Buenos Aires, Argentina, who did not participate in the study, it is always productive to know that T-cell responses develop in patients with HIV infection, with CD4+ T-lymphocyte counts > and < 500/mm3, through an intradermal administration route.
Dr. García emphasized that the most novel aspect is that the JYNNEOS vaccine induces a specific T-cell response in patients with HIV infection that increases with higher CD4+ T-lymphocyte levels. However, he noted that the number of patients was less than 10 in most study groups, and the control group had only intradermal administration, which limits the interpretation of the results. “It will be necessary to verify this in studies with larger groups with control groups from all routes and with a correlate of protection.”
Dr. García referred to this latter point as a significant source of uncertainty. “The study is fundamentally based on the cellular response, but nowadays, there is no immune correlate of real-life protection.” He concluded that the study builds knowledge, which is essential for a vaccine that began to be used for mpox and the effectiveness of which is based on estimates.
Dr. Güerri-Fernandez and Dr. Garcia declared no relevant financial conflicts of interest.
This story was translated from the Medscape Spanish edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.
The smallpox vaccine effectively induces immunity against mpox virus infection (formerly simian smallpox) in patients with human immunodeficiency virus (HIV) infection, although patients with lymphocyte counts below 500 cells/mm3 require booster doses, according to data from a study published in the Journal of Medical Virology.
The data come from the prospective observational study conducted by researchers at the Infection Biology Laboratory of the Department of Medicine and Life Sciences at Pompeu Fabra University and the HIV Unit of the Hospital del Mar Medical Research Institute in Barcelona, Spain. The investigators analyzed T-cell responses induced by vaccination with JYNNEOS.
Despite the substantial decrease in the reporting frequency of mpox cases from the global peak in August 2022 (30,894 cases) to 804 monthly cases in the last six months of 2023, mpox continues to circulate, and there is no specific vaccine. The JYNNEOS vaccine, with protective cross-reactivity against orthopoxviruses, is approved by the US Food and Drug Administration and the European Medicines Agency for the prevention of smallpox and mpox in adults at high risk for infection.
During the 2022 outbreak in the United States and Europe, vaccine shortages led to the emergency use authorization of a lower intradermal dose. This strategy was aimed at increasing vaccine supply up to fivefold.
Further clinical trials are needed to evaluate responses to JYNNEOS vaccination and compare different administration routes in patients with HIV infection. Protecting this population against mpox is a priority because people with high viral loads or loCD4+ T-lymphocyte counts are especially susceptible to severe disease.
Vaccination Responses
The study assessed the immune response to the JYNNEOS vaccine in patients with HIV who were receiving antiretroviral therapy as outpatients at the Infectious Diseases Unit of Hospital del Mar in Barcelona, Spain. Participants had viral loads controlled by antiretroviral therapy and CD4+ T-lymphocyte counts ≤ 500/mm3 (loCD4 group) or ≥ 500/mm3 (hiCD4 group) in blood. Vaccine responses were compared with those of vaccinated controls without the disease. The study included cases that received the standard subcutaneous vaccine (before August 2022) or the emergency dose-saving intradermal vaccine after its approval in August 2022.
The results demonstrated that the intradermal dose-saving vaccination route is preferable to the subcutaneous route and that patients in the loCD4 group may require at least one booster to generate an efficient response of specific T cells for mpox, wrote the authors.
“This study has two relevant points,” study author Robert Güerri-Fernandez, MD, PhD, head of infectious diseases at the Hospital del Mar Medical Research Institute, told this news organization. “In the subgroup of patients with HIV with effective treatment but without an immune response (ie, loCD4), the vaccine response is worse than in people who have recovered immunity or do not have HIV. Therefore, they need a booster dose.
“The second point is that the intradermal route with one-fifth of the standard subcutaneous dose has a better immune response than the standard subcutaneous route.” He added that it was a good strategy to save doses and be able to vaccinate many more people when vaccine shortages occurred.
“A general conclusion cannot be drawn,” he said. “It needs to be validated with many more subjects, of course, but in some way, it reinforced our confidence in the strategy of health authorities to promote intradermal vaccination. There we had evidence that the patients we were vaccinating intradermally were responding well.”
In Spain, although there is no shortage of vaccines today, they continue to be administered intradermally with a fractionated dose equivalent to one fifth of a standard dose, said Dr. Güerri-Fernandez.
However, in his opinion, observations regarding the two administration routes signal a need for further research. The main message should be that for patients with HIV infection who do not have an immune response, the vaccine response is incomplete, and they need booster doses as well as monitoring of the vaccine immune response, said Dr. Güerri-Fernandez.
More Studies Required
The research, which prospectively collected data and blood samples from patients with HIV who received the JYNNEOS vaccine, is small and included only 24 patients with HIV infection, with seven hospital workers who also received the vaccine and seven unvaccinated individuals as controls. “I am one of the control subjects of the study, and intradermal vaccination is not especially pleasant,” said Dr. Güerri-Fernandez. “It is a very innervated area, and the moment of introducing the liquid is uncomfortable. But it is perfectly bearable.”
Outpatient HIV-infected patients from the Infectious Diseases Unit of Hospital del Mar on antiretroviral therapy and with undetectable viral loads were grouped according to their CD4+ T-lymphocyte counts. Those with CD4+ T-lymphocyte counts ≤ 500/mm3 required at least one booster vaccine to exhibit efficient virus-specific T-lymphocyte responses. The magnitude of the T-cell response after this booster correlated directly with the CD4+ T-lymphocyte count of those vaccinated.
For Argentine infectious disease specialist Julián García, MD, clinical researcher at the Huésped Foundation in Buenos Aires, Argentina, who did not participate in the study, it is always productive to know that T-cell responses develop in patients with HIV infection, with CD4+ T-lymphocyte counts > and < 500/mm3, through an intradermal administration route.
Dr. García emphasized that the most novel aspect is that the JYNNEOS vaccine induces a specific T-cell response in patients with HIV infection that increases with higher CD4+ T-lymphocyte levels. However, he noted that the number of patients was less than 10 in most study groups, and the control group had only intradermal administration, which limits the interpretation of the results. “It will be necessary to verify this in studies with larger groups with control groups from all routes and with a correlate of protection.”
Dr. García referred to this latter point as a significant source of uncertainty. “The study is fundamentally based on the cellular response, but nowadays, there is no immune correlate of real-life protection.” He concluded that the study builds knowledge, which is essential for a vaccine that began to be used for mpox and the effectiveness of which is based on estimates.
Dr. Güerri-Fernandez and Dr. Garcia declared no relevant financial conflicts of interest.
This story was translated from the Medscape Spanish edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.
Does Bariatric Surgery Increase or Decrease Cancer Risk? It Depends.
Bariatric surgery appears to decrease the risk for some cancers, but it may increase the risk for others, particularly colorectal cancer (CRC), according to a synthesis of current evidence.
“There has been a recent burst of studies examining the association between bariatric surgery and the longitudinal risks of developing cancer,” corresponding author Zhi Ven Fong, MD, MPH, DrPH, surgical oncologist, Mayo Clinic Arizona, Phoenix, said in an interview. “However, there has not been a rigorous and critical analysis of the data published to date.”
In evaluating research showing an association between bariatric surgery and longitudinal cancer risk, the investigators found that the quality of the studies and their findings are “heterogeneous and might be susceptible to bias,” Dr. Fong said.
Bariatric surgery appears to have the strongest and most consistent association with the reduction of breast, ovarian, and endometrial cancer risk, first author Pei-Wen Lim, MD, MS, bariatric surgeon at Mayo Clinic Arizona, Phoenix, told this news organization. “However, there have been concerning signals from preclinical and epidemiological studies that bariatric surgery may be associated with a higher risk of developing colorectal cancers,” she added.
The authors cautioned against certain changes in clinical management.
“First, cancer surveillance frequency should not be altered after bariatric surgery because of any assumed reduction in longitudinal cancer risk, and surveillance strategy should mirror that of an average-risk individual,” they wrote. “Secondly, the indications for bariatric surgery should not be expanded for the purpose of cancer-risk mitigation.”
The review was published online in JAMA Surgery.
Protection Against Hormone-Related Cancers
The authors pointed to several studies that appear to support the association between bariatric surgery and decreased risk for hormone-related cancers.
Among them is an observational study of 6781 patients in Canada that showed a significant reduction in breast cancer risk at a median follow-up of 5 years in those who had bariatric surgery vs those who did not (P = .01).
The largest study to date on risk for hormone-related cancer after bariatric surgery was conducted using New York State data for 302,883 women.
It showed a lower rate of breast, endometrial, and ovarian cancers after bariatric surgery (hazard ratio [HR], 0.78; P < .001), with Roux-en-Y gastric bypass conferring the greatest benefit compared with laparoscopic sleeve gastrectomy (HR, 0.66; P = .006) and laparoscopic adjustable gastric banding (HR, 0.83; P = .006).
Beyond the shared mechanisms explaining obesity and cancer risk, a proposed explanation for the strong, consistent association between bariatric surgery and hormone-sensitive cancers is the role obesity-related changes in estrogen stimulation play in development of such cancers, the authors noted.
Association With GI Cancers
The association between bariatric surgery and development of esophageal, gastric, liver, and pancreas cancers is less clear. The data are heterogeneous, with studies showing either no association or decreased longitudinal incidence, the authors reported.
The data are also mixed when it comes to CRC. Epidemiological studies have demonstrated decreased longitudinal incidence of colon and rectal cancer after bariatric surgery; however, two studies have suggested an increased CRC risk after bariatric surgery, the authors noted.
A 15-year study from England that matched 8794 patients with obesity who underwent bariatric surgery with 8794 patients with obesity who did not have the surgery showed that gastric bypass (but not gastric banding or sleeve gastrectomy) was associated with a greater than twofold increased risk of developing colon and rectal cancer (odds ratio, 2.63).
These findings were corroborated in a Swedish cohort study with more than 10 years of follow-up data.
One potential explanation for the heterogeneous findings is that “present studies do not discriminate the sub-types of colon and rectal cancer, with bariatric surgery possibly increasing the incidence of colitis-associated cancers but not hereditary cancers,” the authors wrote.
“The mechanism by which gastric bypass may increase the risk of colorectal cancer is through changes in the gut’s microbiome. These changes in gut flora may triumph the protective effect of weight loss on the development of colorectal cancers,” Dr. Fong said.
Prospective studies are necessary to better delineate CRC risk after bariatric surgery, the authors wrote.
Benefits Outweigh Risk
“Ultimately, it has been proven that bariatric surgery saves lives by improving the metabolic profile of patients with obesity through reduction in cardiovascular risk factors such as hypertension, diabetes, and nonalcoholic fatty liver disease,” Dr. Lim said.
“If patients qualify for bariatric surgery on the basis of their BMI or comorbidities, they should pursue it for its metabolic benefits, but perhaps consider timely or closer-interval screening colonoscopies to monitor for potential colorectal cancer development,” Dr. Lim added.
When asked to comment on the review, Marina Kurian, MD, president, American Society for Metabolic and Bariatric Surgery, also pointed to the advantages of bariatric surgery in reducing major adverse cardiovascular events and improving hypertension, hyperlipidemia, and diabetes.
Bariatric surgery reduces many types of cancers, although the data specific to CRC risk with bariatric surgery are mixed, she added.
“The jury is still out,” said Dr. Kurian, clinical professor of surgery at NYU Langone Health in New York, who was not involved in the review. “There are papers and meta-analyses that show benefit even in colorectal cancer, but then there are a couple of papers out there that suggest a risk that seems to be specific to men.
“It could just be a numbers game, where we may not have enough data. We need more granular data that will help address these nuances and really determine what is the actual risk,” Dr. Kurian said. “But overall, for cancer, bariatric surgery is a win.”
This research had no specific funding. Dr. Fong and Dr. Lim had no relevant disclosures. Dr. Kurian disclosed relationships with Allergan, Allurion, CineMed, CSATS, Ezisurg Medical, Hernon, Johnson & Johnson, Medtronic, Novo, Stryker, and Vivus.
A version of this article appeared on Medscape.com.
Bariatric surgery appears to decrease the risk for some cancers, but it may increase the risk for others, particularly colorectal cancer (CRC), according to a synthesis of current evidence.
“There has been a recent burst of studies examining the association between bariatric surgery and the longitudinal risks of developing cancer,” corresponding author Zhi Ven Fong, MD, MPH, DrPH, surgical oncologist, Mayo Clinic Arizona, Phoenix, said in an interview. “However, there has not been a rigorous and critical analysis of the data published to date.”
In evaluating research showing an association between bariatric surgery and longitudinal cancer risk, the investigators found that the quality of the studies and their findings are “heterogeneous and might be susceptible to bias,” Dr. Fong said.
Bariatric surgery appears to have the strongest and most consistent association with the reduction of breast, ovarian, and endometrial cancer risk, first author Pei-Wen Lim, MD, MS, bariatric surgeon at Mayo Clinic Arizona, Phoenix, told this news organization. “However, there have been concerning signals from preclinical and epidemiological studies that bariatric surgery may be associated with a higher risk of developing colorectal cancers,” she added.
The authors cautioned against certain changes in clinical management.
“First, cancer surveillance frequency should not be altered after bariatric surgery because of any assumed reduction in longitudinal cancer risk, and surveillance strategy should mirror that of an average-risk individual,” they wrote. “Secondly, the indications for bariatric surgery should not be expanded for the purpose of cancer-risk mitigation.”
The review was published online in JAMA Surgery.
Protection Against Hormone-Related Cancers
The authors pointed to several studies that appear to support the association between bariatric surgery and decreased risk for hormone-related cancers.
Among them is an observational study of 6781 patients in Canada that showed a significant reduction in breast cancer risk at a median follow-up of 5 years in those who had bariatric surgery vs those who did not (P = .01).
The largest study to date on risk for hormone-related cancer after bariatric surgery was conducted using New York State data for 302,883 women.
It showed a lower rate of breast, endometrial, and ovarian cancers after bariatric surgery (hazard ratio [HR], 0.78; P < .001), with Roux-en-Y gastric bypass conferring the greatest benefit compared with laparoscopic sleeve gastrectomy (HR, 0.66; P = .006) and laparoscopic adjustable gastric banding (HR, 0.83; P = .006).
Beyond the shared mechanisms explaining obesity and cancer risk, a proposed explanation for the strong, consistent association between bariatric surgery and hormone-sensitive cancers is the role obesity-related changes in estrogen stimulation play in development of such cancers, the authors noted.
Association With GI Cancers
The association between bariatric surgery and development of esophageal, gastric, liver, and pancreas cancers is less clear. The data are heterogeneous, with studies showing either no association or decreased longitudinal incidence, the authors reported.
The data are also mixed when it comes to CRC. Epidemiological studies have demonstrated decreased longitudinal incidence of colon and rectal cancer after bariatric surgery; however, two studies have suggested an increased CRC risk after bariatric surgery, the authors noted.
A 15-year study from England that matched 8794 patients with obesity who underwent bariatric surgery with 8794 patients with obesity who did not have the surgery showed that gastric bypass (but not gastric banding or sleeve gastrectomy) was associated with a greater than twofold increased risk of developing colon and rectal cancer (odds ratio, 2.63).
These findings were corroborated in a Swedish cohort study with more than 10 years of follow-up data.
One potential explanation for the heterogeneous findings is that “present studies do not discriminate the sub-types of colon and rectal cancer, with bariatric surgery possibly increasing the incidence of colitis-associated cancers but not hereditary cancers,” the authors wrote.
“The mechanism by which gastric bypass may increase the risk of colorectal cancer is through changes in the gut’s microbiome. These changes in gut flora may triumph the protective effect of weight loss on the development of colorectal cancers,” Dr. Fong said.
Prospective studies are necessary to better delineate CRC risk after bariatric surgery, the authors wrote.
Benefits Outweigh Risk
“Ultimately, it has been proven that bariatric surgery saves lives by improving the metabolic profile of patients with obesity through reduction in cardiovascular risk factors such as hypertension, diabetes, and nonalcoholic fatty liver disease,” Dr. Lim said.
“If patients qualify for bariatric surgery on the basis of their BMI or comorbidities, they should pursue it for its metabolic benefits, but perhaps consider timely or closer-interval screening colonoscopies to monitor for potential colorectal cancer development,” Dr. Lim added.
When asked to comment on the review, Marina Kurian, MD, president, American Society for Metabolic and Bariatric Surgery, also pointed to the advantages of bariatric surgery in reducing major adverse cardiovascular events and improving hypertension, hyperlipidemia, and diabetes.
Bariatric surgery reduces many types of cancers, although the data specific to CRC risk with bariatric surgery are mixed, she added.
“The jury is still out,” said Dr. Kurian, clinical professor of surgery at NYU Langone Health in New York, who was not involved in the review. “There are papers and meta-analyses that show benefit even in colorectal cancer, but then there are a couple of papers out there that suggest a risk that seems to be specific to men.
“It could just be a numbers game, where we may not have enough data. We need more granular data that will help address these nuances and really determine what is the actual risk,” Dr. Kurian said. “But overall, for cancer, bariatric surgery is a win.”
This research had no specific funding. Dr. Fong and Dr. Lim had no relevant disclosures. Dr. Kurian disclosed relationships with Allergan, Allurion, CineMed, CSATS, Ezisurg Medical, Hernon, Johnson & Johnson, Medtronic, Novo, Stryker, and Vivus.
A version of this article appeared on Medscape.com.
Bariatric surgery appears to decrease the risk for some cancers, but it may increase the risk for others, particularly colorectal cancer (CRC), according to a synthesis of current evidence.
“There has been a recent burst of studies examining the association between bariatric surgery and the longitudinal risks of developing cancer,” corresponding author Zhi Ven Fong, MD, MPH, DrPH, surgical oncologist, Mayo Clinic Arizona, Phoenix, said in an interview. “However, there has not been a rigorous and critical analysis of the data published to date.”
In evaluating research showing an association between bariatric surgery and longitudinal cancer risk, the investigators found that the quality of the studies and their findings are “heterogeneous and might be susceptible to bias,” Dr. Fong said.
Bariatric surgery appears to have the strongest and most consistent association with the reduction of breast, ovarian, and endometrial cancer risk, first author Pei-Wen Lim, MD, MS, bariatric surgeon at Mayo Clinic Arizona, Phoenix, told this news organization. “However, there have been concerning signals from preclinical and epidemiological studies that bariatric surgery may be associated with a higher risk of developing colorectal cancers,” she added.
The authors cautioned against certain changes in clinical management.
“First, cancer surveillance frequency should not be altered after bariatric surgery because of any assumed reduction in longitudinal cancer risk, and surveillance strategy should mirror that of an average-risk individual,” they wrote. “Secondly, the indications for bariatric surgery should not be expanded for the purpose of cancer-risk mitigation.”
The review was published online in JAMA Surgery.
Protection Against Hormone-Related Cancers
The authors pointed to several studies that appear to support the association between bariatric surgery and decreased risk for hormone-related cancers.
Among them is an observational study of 6781 patients in Canada that showed a significant reduction in breast cancer risk at a median follow-up of 5 years in those who had bariatric surgery vs those who did not (P = .01).
The largest study to date on risk for hormone-related cancer after bariatric surgery was conducted using New York State data for 302,883 women.
It showed a lower rate of breast, endometrial, and ovarian cancers after bariatric surgery (hazard ratio [HR], 0.78; P < .001), with Roux-en-Y gastric bypass conferring the greatest benefit compared with laparoscopic sleeve gastrectomy (HR, 0.66; P = .006) and laparoscopic adjustable gastric banding (HR, 0.83; P = .006).
Beyond the shared mechanisms explaining obesity and cancer risk, a proposed explanation for the strong, consistent association between bariatric surgery and hormone-sensitive cancers is the role obesity-related changes in estrogen stimulation play in development of such cancers, the authors noted.
Association With GI Cancers
The association between bariatric surgery and development of esophageal, gastric, liver, and pancreas cancers is less clear. The data are heterogeneous, with studies showing either no association or decreased longitudinal incidence, the authors reported.
The data are also mixed when it comes to CRC. Epidemiological studies have demonstrated decreased longitudinal incidence of colon and rectal cancer after bariatric surgery; however, two studies have suggested an increased CRC risk after bariatric surgery, the authors noted.
A 15-year study from England that matched 8794 patients with obesity who underwent bariatric surgery with 8794 patients with obesity who did not have the surgery showed that gastric bypass (but not gastric banding or sleeve gastrectomy) was associated with a greater than twofold increased risk of developing colon and rectal cancer (odds ratio, 2.63).
These findings were corroborated in a Swedish cohort study with more than 10 years of follow-up data.
One potential explanation for the heterogeneous findings is that “present studies do not discriminate the sub-types of colon and rectal cancer, with bariatric surgery possibly increasing the incidence of colitis-associated cancers but not hereditary cancers,” the authors wrote.
“The mechanism by which gastric bypass may increase the risk of colorectal cancer is through changes in the gut’s microbiome. These changes in gut flora may triumph the protective effect of weight loss on the development of colorectal cancers,” Dr. Fong said.
Prospective studies are necessary to better delineate CRC risk after bariatric surgery, the authors wrote.
Benefits Outweigh Risk
“Ultimately, it has been proven that bariatric surgery saves lives by improving the metabolic profile of patients with obesity through reduction in cardiovascular risk factors such as hypertension, diabetes, and nonalcoholic fatty liver disease,” Dr. Lim said.
“If patients qualify for bariatric surgery on the basis of their BMI or comorbidities, they should pursue it for its metabolic benefits, but perhaps consider timely or closer-interval screening colonoscopies to monitor for potential colorectal cancer development,” Dr. Lim added.
When asked to comment on the review, Marina Kurian, MD, president, American Society for Metabolic and Bariatric Surgery, also pointed to the advantages of bariatric surgery in reducing major adverse cardiovascular events and improving hypertension, hyperlipidemia, and diabetes.
Bariatric surgery reduces many types of cancers, although the data specific to CRC risk with bariatric surgery are mixed, she added.
“The jury is still out,” said Dr. Kurian, clinical professor of surgery at NYU Langone Health in New York, who was not involved in the review. “There are papers and meta-analyses that show benefit even in colorectal cancer, but then there are a couple of papers out there that suggest a risk that seems to be specific to men.
“It could just be a numbers game, where we may not have enough data. We need more granular data that will help address these nuances and really determine what is the actual risk,” Dr. Kurian said. “But overall, for cancer, bariatric surgery is a win.”
This research had no specific funding. Dr. Fong and Dr. Lim had no relevant disclosures. Dr. Kurian disclosed relationships with Allergan, Allurion, CineMed, CSATS, Ezisurg Medical, Hernon, Johnson & Johnson, Medtronic, Novo, Stryker, and Vivus.
A version of this article appeared on Medscape.com.
Low-Glycemic Index Diet Benefits Mirror Fiber, Whole Grain
TOPLINE:
A diet with a low glycemic index (GI) had protective effects against diabetes and other chronic diseases similar to those of a diet high in fiber and whole grains.
METHODOLOGY:
- A 2019 Lancet report from the World Health Organization promoted fiber and whole grains to manage type 2 diabetes, cardiovascular disease, and cancer but rejected GI as a relevant dietary factor to prevent chronic diseases.
- This meta-analysis assessed the evidence of how GI and glycemic load are associated with four main outcomes and did the same for diets high in fiber and whole grain.
- Researchers identified 10 large prospective cohort studies (each including ≥ 100,000 participants) that assessed associations of GI, glycemic load, and fiber and whole grains with the outcomes of interest.
- The mean age was 56 years, and the mean follow-up duration was 12.6 years.
- The primary outcomes were incidence of type 2 diabetes, cardiovascular diseases and its components, diabetes-related cancers, and all-cause mortality.
TAKEAWAY:
- Compared with low-GI diets, high-GI diets were associated with an increased risk for:
- Type 2 diabetes (relative risk [RR], 1.27; P < .0001)
- Total cardiovascular disease (RR, 1.15; P < .0001)
- Diabetes-related cancers (RR, 1.05; P = .0001)
- All-cause mortality (RR, 1.08; P < .0001), statistically significant in women only.
- Foods with high glycemic load were associated with an increased risk for incident type 2 diabetes (RR, 1.15; P < .0001) and total cardiovascular disease (RR, 1.15; P < .0001) than foods with a low glycemic load.
- A diet high in fiber and whole grains reduced the risk for all four outcomes, with the association being similar to that observed for low-GI diet.
IN PRACTICE:
“These findings justify the combination of GI with fiber and whole grains in dietary recommendations to reduce the risk of diabetes and related chronic diseases,” the authors wrote.
SOURCE:
This study was led by David J.A. Jenkins, MD, Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada, and published online in The Lancet Diabetes & Endocrinology.
LIMITATIONS:
The lack of evaluation or absence of positive effects in some analyses may have led to a paucity of reported studies for some outcomes. Moreover, the findings for some outcomes may have had limited robustness because of a small difference in RR. Furthermore, only one or two cohorts were included to compare most disease outcomes related to GI with fiber and wholegrain exposure.
DISCLOSURES:
This study was funded by Banting and Best and the Karuna Foundation. The authors declared receiving research grants, payments, honoraria, and travel support from and having other ties with food and beverage growers, processors and manufacturers, as well as with foundations, chronic disease advocacy and research groups, professional societies, government organizations, and other sources.
A version of this article appeared on Medscape.com.
TOPLINE:
A diet with a low glycemic index (GI) had protective effects against diabetes and other chronic diseases similar to those of a diet high in fiber and whole grains.
METHODOLOGY:
- A 2019 Lancet report from the World Health Organization promoted fiber and whole grains to manage type 2 diabetes, cardiovascular disease, and cancer but rejected GI as a relevant dietary factor to prevent chronic diseases.
- This meta-analysis assessed the evidence of how GI and glycemic load are associated with four main outcomes and did the same for diets high in fiber and whole grain.
- Researchers identified 10 large prospective cohort studies (each including ≥ 100,000 participants) that assessed associations of GI, glycemic load, and fiber and whole grains with the outcomes of interest.
- The mean age was 56 years, and the mean follow-up duration was 12.6 years.
- The primary outcomes were incidence of type 2 diabetes, cardiovascular diseases and its components, diabetes-related cancers, and all-cause mortality.
TAKEAWAY:
- Compared with low-GI diets, high-GI diets were associated with an increased risk for:
- Type 2 diabetes (relative risk [RR], 1.27; P < .0001)
- Total cardiovascular disease (RR, 1.15; P < .0001)
- Diabetes-related cancers (RR, 1.05; P = .0001)
- All-cause mortality (RR, 1.08; P < .0001), statistically significant in women only.
- Foods with high glycemic load were associated with an increased risk for incident type 2 diabetes (RR, 1.15; P < .0001) and total cardiovascular disease (RR, 1.15; P < .0001) than foods with a low glycemic load.
- A diet high in fiber and whole grains reduced the risk for all four outcomes, with the association being similar to that observed for low-GI diet.
IN PRACTICE:
“These findings justify the combination of GI with fiber and whole grains in dietary recommendations to reduce the risk of diabetes and related chronic diseases,” the authors wrote.
SOURCE:
This study was led by David J.A. Jenkins, MD, Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada, and published online in The Lancet Diabetes & Endocrinology.
LIMITATIONS:
The lack of evaluation or absence of positive effects in some analyses may have led to a paucity of reported studies for some outcomes. Moreover, the findings for some outcomes may have had limited robustness because of a small difference in RR. Furthermore, only one or two cohorts were included to compare most disease outcomes related to GI with fiber and wholegrain exposure.
DISCLOSURES:
This study was funded by Banting and Best and the Karuna Foundation. The authors declared receiving research grants, payments, honoraria, and travel support from and having other ties with food and beverage growers, processors and manufacturers, as well as with foundations, chronic disease advocacy and research groups, professional societies, government organizations, and other sources.
A version of this article appeared on Medscape.com.
TOPLINE:
A diet with a low glycemic index (GI) had protective effects against diabetes and other chronic diseases similar to those of a diet high in fiber and whole grains.
METHODOLOGY:
- A 2019 Lancet report from the World Health Organization promoted fiber and whole grains to manage type 2 diabetes, cardiovascular disease, and cancer but rejected GI as a relevant dietary factor to prevent chronic diseases.
- This meta-analysis assessed the evidence of how GI and glycemic load are associated with four main outcomes and did the same for diets high in fiber and whole grain.
- Researchers identified 10 large prospective cohort studies (each including ≥ 100,000 participants) that assessed associations of GI, glycemic load, and fiber and whole grains with the outcomes of interest.
- The mean age was 56 years, and the mean follow-up duration was 12.6 years.
- The primary outcomes were incidence of type 2 diabetes, cardiovascular diseases and its components, diabetes-related cancers, and all-cause mortality.
TAKEAWAY:
- Compared with low-GI diets, high-GI diets were associated with an increased risk for:
- Type 2 diabetes (relative risk [RR], 1.27; P < .0001)
- Total cardiovascular disease (RR, 1.15; P < .0001)
- Diabetes-related cancers (RR, 1.05; P = .0001)
- All-cause mortality (RR, 1.08; P < .0001), statistically significant in women only.
- Foods with high glycemic load were associated with an increased risk for incident type 2 diabetes (RR, 1.15; P < .0001) and total cardiovascular disease (RR, 1.15; P < .0001) than foods with a low glycemic load.
- A diet high in fiber and whole grains reduced the risk for all four outcomes, with the association being similar to that observed for low-GI diet.
IN PRACTICE:
“These findings justify the combination of GI with fiber and whole grains in dietary recommendations to reduce the risk of diabetes and related chronic diseases,” the authors wrote.
SOURCE:
This study was led by David J.A. Jenkins, MD, Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada, and published online in The Lancet Diabetes & Endocrinology.
LIMITATIONS:
The lack of evaluation or absence of positive effects in some analyses may have led to a paucity of reported studies for some outcomes. Moreover, the findings for some outcomes may have had limited robustness because of a small difference in RR. Furthermore, only one or two cohorts were included to compare most disease outcomes related to GI with fiber and wholegrain exposure.
DISCLOSURES:
This study was funded by Banting and Best and the Karuna Foundation. The authors declared receiving research grants, payments, honoraria, and travel support from and having other ties with food and beverage growers, processors and manufacturers, as well as with foundations, chronic disease advocacy and research groups, professional societies, government organizations, and other sources.
A version of this article appeared on Medscape.com.
Few Pediatricians Comfortable Treating Youth With OUD
An estimated 1 in 100 adolescents ages 12-17 years in the United States have an opioid use disorder (OUD). But fewer than 5% of adolescents with OUD get buprenorphine or naltrexone, though the treatments are recommended by the American Academy of Pediatrics (AAP), new data show.
Meanwhile, adolescent drug overdose deaths more than doubled between 2019 and 2021, with most involving opioids.
Scott E. Hadland, MD, MPH, with the Division of Adolescent and Young Adult Medicine at Mass General for Children in Boston, and colleagues detailed the extent of the treatment gap and barriers to prescribing and caring for youth with OUD in primary care in a research letter published February 26 in JAMA Pediatrics.
Dr. Hadland’s team mailed 1,681 US pediatricians a survey and the response rate was 43.0%. Researchers included in the sample 474 primary care pediatricians who care for adolescents.
Who Should Treat OUD?
Most respondents (average age, 49.5; 74.0% female) agreed or strongly agreed that it is their responsibility to identify substance use disorders (93.9%) and refer patients to treatment (97.4%).
Fewer agreed or strongly agreed that it is their responsibility to treat substance use disorders (20.3%) or prescribe medications (12.4%). Fewer than half of the respondents said they felt prepared or very prepared to counsel adolescents on opioid use (48.3%) compared with those comfortable counseling on alcohol (87.1%), cannabis (81.7%), and e-cigarette use (80.1%; P < .001).
Pediatricians were less likely to provide counseling (63.0%) and more likely to refer patients to care off-site (71.8%) for opioid use than for alcohol (87.7% and 51.7%); cannabis (88.9% and 45.4%); or e-cigarette use (91.6% and 26.5%) (P < .001 for all comparisons).
Training Lacking in Residency Programs
“These results reveal an opportunity for greater workforce training in line with a 2019 survey showing fewer than 1 in 3 US pediatric residency programs included education on prescribing OUD medications,” the authors wrote. Training focused on treating OUD in primary care, including prescribing medications and addressing possible misperceptions, may be needed,” they noted.
The survey predated the elimination in 2023 of the federal buprenorphine waiver requirement, which made prescribing buprenorphine easier, so these results do not reflect any changes from that elimination, they wrote.
Sharon Levy, MD, MPH, chief of the Division of Addiction Medicine at Boston Children’s Hospital and professor of pediatrics at Harvard Medical School in Boston, who was not part of this study, said more education on addiction medicine is needed for general pediatricians.
She said it’s time to push beyond the current framework of Screening, Brief Intervention, Referral to Treatment (SBIRT), because that doesn’t include “prescribing medications to manage withdrawal or suppress cravings or the use of lab testing, both of which could be accomplished in primary care.”
Dr. Levy said she considers substance use disorders the same way she considers other chronic conditions: Most patients can be treated in primary care. “Specialty care and higher levels of care need to be available for patients who are most complicated and/or having a flare of their condition.”
“In my opinion, most teens with opioid use disorder can and should be treated in primary care. I worry about referring teens with opioid use disorder to get medication somewhere else because there are few places that deliver this service to this age group. Additionally, teens and families are not always willing to pursue a referral, and many will get lost along the way.”
Promising Models
At Boston Children’s, she said, the Division of Addiction Medicine has created a consultation call line that primary care providers can call for help with any questions about teen substance use.
After running the consultation for about a year, she said, the program wanted to add ways to help patients directly and hired and trained social workers who can see pediatric patients with substance use problems for counseling via telemedicine. “The program also now supports group therapy for pediatric patients and parents, so that primary care providers can refer patients directly to group therapy,” Dr. Levy said.
The growth of telehealth since the pandemic may allow for new models of care.
“For example, now our Adolescent Substance Use and Addiction Program at Boston Children’s Hospital can provide services, including medication induction and follow-up, virtually,” Dr. Levy said. “This allows us to treat young people anywhere in the state. There have been instances in which a primary care provider referred us patients with OUD and then partnered with us, including performing physicals for teens who could not get to Boston to see us in person. At the end of the day, the more models we can come up with the better.”
Dr. Hadland reported honoraria from the AAP outside the submitted work. Two coauthors reported receiving salary support from the AAP during the conduct of the study. A coauthor reported serving as the chair of the AAP Committee on Substance Use and Prevention outside the submitted work. This work was supported by a grant from the Conrad N. Hilton Foundation via the AAP. Dr. Sharon Levy’s husband, Ofer Levy, MD, PhD, is director of the Precision Vaccines Program at Boston Children’s Hospital.
An estimated 1 in 100 adolescents ages 12-17 years in the United States have an opioid use disorder (OUD). But fewer than 5% of adolescents with OUD get buprenorphine or naltrexone, though the treatments are recommended by the American Academy of Pediatrics (AAP), new data show.
Meanwhile, adolescent drug overdose deaths more than doubled between 2019 and 2021, with most involving opioids.
Scott E. Hadland, MD, MPH, with the Division of Adolescent and Young Adult Medicine at Mass General for Children in Boston, and colleagues detailed the extent of the treatment gap and barriers to prescribing and caring for youth with OUD in primary care in a research letter published February 26 in JAMA Pediatrics.
Dr. Hadland’s team mailed 1,681 US pediatricians a survey and the response rate was 43.0%. Researchers included in the sample 474 primary care pediatricians who care for adolescents.
Who Should Treat OUD?
Most respondents (average age, 49.5; 74.0% female) agreed or strongly agreed that it is their responsibility to identify substance use disorders (93.9%) and refer patients to treatment (97.4%).
Fewer agreed or strongly agreed that it is their responsibility to treat substance use disorders (20.3%) or prescribe medications (12.4%). Fewer than half of the respondents said they felt prepared or very prepared to counsel adolescents on opioid use (48.3%) compared with those comfortable counseling on alcohol (87.1%), cannabis (81.7%), and e-cigarette use (80.1%; P < .001).
Pediatricians were less likely to provide counseling (63.0%) and more likely to refer patients to care off-site (71.8%) for opioid use than for alcohol (87.7% and 51.7%); cannabis (88.9% and 45.4%); or e-cigarette use (91.6% and 26.5%) (P < .001 for all comparisons).
Training Lacking in Residency Programs
“These results reveal an opportunity for greater workforce training in line with a 2019 survey showing fewer than 1 in 3 US pediatric residency programs included education on prescribing OUD medications,” the authors wrote. Training focused on treating OUD in primary care, including prescribing medications and addressing possible misperceptions, may be needed,” they noted.
The survey predated the elimination in 2023 of the federal buprenorphine waiver requirement, which made prescribing buprenorphine easier, so these results do not reflect any changes from that elimination, they wrote.
Sharon Levy, MD, MPH, chief of the Division of Addiction Medicine at Boston Children’s Hospital and professor of pediatrics at Harvard Medical School in Boston, who was not part of this study, said more education on addiction medicine is needed for general pediatricians.
She said it’s time to push beyond the current framework of Screening, Brief Intervention, Referral to Treatment (SBIRT), because that doesn’t include “prescribing medications to manage withdrawal or suppress cravings or the use of lab testing, both of which could be accomplished in primary care.”
Dr. Levy said she considers substance use disorders the same way she considers other chronic conditions: Most patients can be treated in primary care. “Specialty care and higher levels of care need to be available for patients who are most complicated and/or having a flare of their condition.”
“In my opinion, most teens with opioid use disorder can and should be treated in primary care. I worry about referring teens with opioid use disorder to get medication somewhere else because there are few places that deliver this service to this age group. Additionally, teens and families are not always willing to pursue a referral, and many will get lost along the way.”
Promising Models
At Boston Children’s, she said, the Division of Addiction Medicine has created a consultation call line that primary care providers can call for help with any questions about teen substance use.
After running the consultation for about a year, she said, the program wanted to add ways to help patients directly and hired and trained social workers who can see pediatric patients with substance use problems for counseling via telemedicine. “The program also now supports group therapy for pediatric patients and parents, so that primary care providers can refer patients directly to group therapy,” Dr. Levy said.
The growth of telehealth since the pandemic may allow for new models of care.
“For example, now our Adolescent Substance Use and Addiction Program at Boston Children’s Hospital can provide services, including medication induction and follow-up, virtually,” Dr. Levy said. “This allows us to treat young people anywhere in the state. There have been instances in which a primary care provider referred us patients with OUD and then partnered with us, including performing physicals for teens who could not get to Boston to see us in person. At the end of the day, the more models we can come up with the better.”
Dr. Hadland reported honoraria from the AAP outside the submitted work. Two coauthors reported receiving salary support from the AAP during the conduct of the study. A coauthor reported serving as the chair of the AAP Committee on Substance Use and Prevention outside the submitted work. This work was supported by a grant from the Conrad N. Hilton Foundation via the AAP. Dr. Sharon Levy’s husband, Ofer Levy, MD, PhD, is director of the Precision Vaccines Program at Boston Children’s Hospital.
An estimated 1 in 100 adolescents ages 12-17 years in the United States have an opioid use disorder (OUD). But fewer than 5% of adolescents with OUD get buprenorphine or naltrexone, though the treatments are recommended by the American Academy of Pediatrics (AAP), new data show.
Meanwhile, adolescent drug overdose deaths more than doubled between 2019 and 2021, with most involving opioids.
Scott E. Hadland, MD, MPH, with the Division of Adolescent and Young Adult Medicine at Mass General for Children in Boston, and colleagues detailed the extent of the treatment gap and barriers to prescribing and caring for youth with OUD in primary care in a research letter published February 26 in JAMA Pediatrics.
Dr. Hadland’s team mailed 1,681 US pediatricians a survey and the response rate was 43.0%. Researchers included in the sample 474 primary care pediatricians who care for adolescents.
Who Should Treat OUD?
Most respondents (average age, 49.5; 74.0% female) agreed or strongly agreed that it is their responsibility to identify substance use disorders (93.9%) and refer patients to treatment (97.4%).
Fewer agreed or strongly agreed that it is their responsibility to treat substance use disorders (20.3%) or prescribe medications (12.4%). Fewer than half of the respondents said they felt prepared or very prepared to counsel adolescents on opioid use (48.3%) compared with those comfortable counseling on alcohol (87.1%), cannabis (81.7%), and e-cigarette use (80.1%; P < .001).
Pediatricians were less likely to provide counseling (63.0%) and more likely to refer patients to care off-site (71.8%) for opioid use than for alcohol (87.7% and 51.7%); cannabis (88.9% and 45.4%); or e-cigarette use (91.6% and 26.5%) (P < .001 for all comparisons).
Training Lacking in Residency Programs
“These results reveal an opportunity for greater workforce training in line with a 2019 survey showing fewer than 1 in 3 US pediatric residency programs included education on prescribing OUD medications,” the authors wrote. Training focused on treating OUD in primary care, including prescribing medications and addressing possible misperceptions, may be needed,” they noted.
The survey predated the elimination in 2023 of the federal buprenorphine waiver requirement, which made prescribing buprenorphine easier, so these results do not reflect any changes from that elimination, they wrote.
Sharon Levy, MD, MPH, chief of the Division of Addiction Medicine at Boston Children’s Hospital and professor of pediatrics at Harvard Medical School in Boston, who was not part of this study, said more education on addiction medicine is needed for general pediatricians.
She said it’s time to push beyond the current framework of Screening, Brief Intervention, Referral to Treatment (SBIRT), because that doesn’t include “prescribing medications to manage withdrawal or suppress cravings or the use of lab testing, both of which could be accomplished in primary care.”
Dr. Levy said she considers substance use disorders the same way she considers other chronic conditions: Most patients can be treated in primary care. “Specialty care and higher levels of care need to be available for patients who are most complicated and/or having a flare of their condition.”
“In my opinion, most teens with opioid use disorder can and should be treated in primary care. I worry about referring teens with opioid use disorder to get medication somewhere else because there are few places that deliver this service to this age group. Additionally, teens and families are not always willing to pursue a referral, and many will get lost along the way.”
Promising Models
At Boston Children’s, she said, the Division of Addiction Medicine has created a consultation call line that primary care providers can call for help with any questions about teen substance use.
After running the consultation for about a year, she said, the program wanted to add ways to help patients directly and hired and trained social workers who can see pediatric patients with substance use problems for counseling via telemedicine. “The program also now supports group therapy for pediatric patients and parents, so that primary care providers can refer patients directly to group therapy,” Dr. Levy said.
The growth of telehealth since the pandemic may allow for new models of care.
“For example, now our Adolescent Substance Use and Addiction Program at Boston Children’s Hospital can provide services, including medication induction and follow-up, virtually,” Dr. Levy said. “This allows us to treat young people anywhere in the state. There have been instances in which a primary care provider referred us patients with OUD and then partnered with us, including performing physicals for teens who could not get to Boston to see us in person. At the end of the day, the more models we can come up with the better.”
Dr. Hadland reported honoraria from the AAP outside the submitted work. Two coauthors reported receiving salary support from the AAP during the conduct of the study. A coauthor reported serving as the chair of the AAP Committee on Substance Use and Prevention outside the submitted work. This work was supported by a grant from the Conrad N. Hilton Foundation via the AAP. Dr. Sharon Levy’s husband, Ofer Levy, MD, PhD, is director of the Precision Vaccines Program at Boston Children’s Hospital.
FROM JAMA PEDIATRICS