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Pleural mesothelioma is generally treated by extended pleurectomy decortication, and there has been little improvement in systemic treatment of early-stage, resectable mesothelioma, which has led to the recommendations of maximum cytoreduction. U.S. and European guidelines, as well as an international consensus statement, support this approach, but it has never been tested in a randomized, controlled trial.

Now it has, and the result is surprising: Surgery led to reduced survival and more serious adverse events, compared with chemotherapy alone. The conclusion was uncomfortable for Eric Lim, MD, who presented the results of the MARS2 trial at the annual World Conference on Lung Cancer. “Ladies and gentlemen, as a surgeon standing here, you have no idea how much it pains me to conclude that extended pleurectomy decortication, an operation that we have been offering for over 70 years, has been associated with a higher risk of death, more serious complications, poorer quality of life, and higher costs, compared to mesothelioma patients who were randomized to chemotherapy alone,” said Dr. Lim of the Royal Brompton Hospital, London, during his presentation.

Although the line drew laughter and applause from the audience, Paula Ugalde Figueroa, MD, who served as a discussant, raised some concerns about the study. Disease presence in one hemithorax was assessed only by chest CT scan, which is notorious for underestimating the volume of disease during surgery. There was also no information on pleural effusion or how many patients received it prior to intervention. Existing guidelines suggest staging of mesothelioma should also use PET scans, and invasive mediastinal staging should be assessed with endobronchial ultrasound. “None of these were performed during the trial,” said Dr. Figueroa, who is an associate thoracic surgeon at Brigham and Women’s Hospital, Boston. “At this point, my question is, are the arms of this study well balanced in regard to tumor volume? We don’t know,” she added.

Dr. Figueroa noted that the 90-day mortality seemed higher than that seen in other studies. “So, does the surgeon’s experience and center volume affect the outcome of this study?” she asked. Dr. Figueroa personally made phone calls to the participating centers and found that 45% of the patients in the trial were treated at low-volume centers, defined by her as two to three patients per year. “Should we assume that their surgical outcomes are similar between those centers? In this trial, with approximately half of patients from low-volume centers, extended pleurectomy decortication for mesothelioma had no significant difference when compared to those patients that underwent chemotherapy alone. Would the outcome be different in exclusively high-volume centers?” she concluded.

The study randomized 335 patients to receive surgery and chemotherapy, or chemotherapy alone. They received two cycles of platinum-based chemotherapy and pemetrexed prior to surgery and up to four cycles after surgery. The average age was 69 years; 86.9% were male, and 85.7% of tumors were epithelioid only. Among those in the surgery group, 88.5% underwent extended pleurectomy/decortication, 8.3% underwent pleurectomy decortication, 1.9% underwent partial pleurectomy, 0.6% exploration with no pleurodesis, and 0.6% were classified as “other” surgery. Completeness of resection was R0 in 3.2% of surgeries, R1 in 80.9%, and R2 in 15.9%. In-hospital mortality occurred in 3.8% of patients, and postsurgical 90-day mortality was 8.9%.

Over the first 42 months of follow-up, the hazard ratio for overall survival was 1.28 in the no-surgery group (P = .03). “The survival was so good in this early-stage cohort that we had to extend the trial by 6 months to get the prerequisite number of deaths, underscoring the phenomenal importance of having a randomized comparative cohort for all future studies on surgery for mesothelioma,” said Dr. Lim.

After 42 months, there was no survival difference between the two groups (hazard ratio, 0.48; P = .15). Dr. Lim attributed the change at 42 months to the fact that only 15 patients remained in each arm at that stage. There was no significant difference between the two groups with respect to progression-free survival.

The survival benefit of the no-surgery group was sustained after additional analyses, including adjustment of the number of first-line chemotherapy cycles and immunotherapy received after completion of the trial protocol.

Adverse events were more common in the surgery group (incidence rate ratio, 3.6; P < .001), including any cardiac disorder (IRR, 2.73; 95% confidence interval, 1.11-6.67); any infection or infestation (IRR, 1.99; 95% CI, 1.33-2.99); any respiratory, thoracic, or mediastinal disorder (IRR, 2.40; 95% CI, 1.52-3.80); and any surgical or medical procedure (IRR, 2.23; 95% CI, 1.04-4.78). The EORTC quality of life score favored the nonsurgery group at 6 weeks, but there was no significant difference at other time points.

Dr. Lim and Dr. Figueroa have no relevant financial disclosures.

Pleural mesothelioma is generally treated by extended pleurectomy decortication, and there has been little improvement in systemic treatment of early-stage, resectable mesothelioma, which has led to the recommendations of maximum cytoreduction. U.S. and European guidelines, as well as an international consensus statement, support this approach, but it has never been tested in a randomized, controlled trial.

Now it has, and the result is surprising: Surgery led to reduced survival and more serious adverse events, compared with chemotherapy alone. The conclusion was uncomfortable for Eric Lim, MD, who presented the results of the MARS2 trial at the annual World Conference on Lung Cancer. “Ladies and gentlemen, as a surgeon standing here, you have no idea how much it pains me to conclude that extended pleurectomy decortication, an operation that we have been offering for over 70 years, has been associated with a higher risk of death, more serious complications, poorer quality of life, and higher costs, compared to mesothelioma patients who were randomized to chemotherapy alone,” said Dr. Lim of the Royal Brompton Hospital, London, during his presentation.

Although the line drew laughter and applause from the audience, Paula Ugalde Figueroa, MD, who served as a discussant, raised some concerns about the study. Disease presence in one hemithorax was assessed only by chest CT scan, which is notorious for underestimating the volume of disease during surgery. There was also no information on pleural effusion or how many patients received it prior to intervention. Existing guidelines suggest staging of mesothelioma should also use PET scans, and invasive mediastinal staging should be assessed with endobronchial ultrasound. “None of these were performed during the trial,” said Dr. Figueroa, who is an associate thoracic surgeon at Brigham and Women’s Hospital, Boston. “At this point, my question is, are the arms of this study well balanced in regard to tumor volume? We don’t know,” she added.

Dr. Figueroa noted that the 90-day mortality seemed higher than that seen in other studies. “So, does the surgeon’s experience and center volume affect the outcome of this study?” she asked. Dr. Figueroa personally made phone calls to the participating centers and found that 45% of the patients in the trial were treated at low-volume centers, defined by her as two to three patients per year. “Should we assume that their surgical outcomes are similar between those centers? In this trial, with approximately half of patients from low-volume centers, extended pleurectomy decortication for mesothelioma had no significant difference when compared to those patients that underwent chemotherapy alone. Would the outcome be different in exclusively high-volume centers?” she concluded.

The study randomized 335 patients to receive surgery and chemotherapy, or chemotherapy alone. They received two cycles of platinum-based chemotherapy and pemetrexed prior to surgery and up to four cycles after surgery. The average age was 69 years; 86.9% were male, and 85.7% of tumors were epithelioid only. Among those in the surgery group, 88.5% underwent extended pleurectomy/decortication, 8.3% underwent pleurectomy decortication, 1.9% underwent partial pleurectomy, 0.6% exploration with no pleurodesis, and 0.6% were classified as “other” surgery. Completeness of resection was R0 in 3.2% of surgeries, R1 in 80.9%, and R2 in 15.9%. In-hospital mortality occurred in 3.8% of patients, and postsurgical 90-day mortality was 8.9%.

Over the first 42 months of follow-up, the hazard ratio for overall survival was 1.28 in the no-surgery group (P = .03). “The survival was so good in this early-stage cohort that we had to extend the trial by 6 months to get the prerequisite number of deaths, underscoring the phenomenal importance of having a randomized comparative cohort for all future studies on surgery for mesothelioma,” said Dr. Lim.

After 42 months, there was no survival difference between the two groups (hazard ratio, 0.48; P = .15). Dr. Lim attributed the change at 42 months to the fact that only 15 patients remained in each arm at that stage. There was no significant difference between the two groups with respect to progression-free survival.

The survival benefit of the no-surgery group was sustained after additional analyses, including adjustment of the number of first-line chemotherapy cycles and immunotherapy received after completion of the trial protocol.

Adverse events were more common in the surgery group (incidence rate ratio, 3.6; P < .001), including any cardiac disorder (IRR, 2.73; 95% confidence interval, 1.11-6.67); any infection or infestation (IRR, 1.99; 95% CI, 1.33-2.99); any respiratory, thoracic, or mediastinal disorder (IRR, 2.40; 95% CI, 1.52-3.80); and any surgical or medical procedure (IRR, 2.23; 95% CI, 1.04-4.78). The EORTC quality of life score favored the nonsurgery group at 6 weeks, but there was no significant difference at other time points.

Dr. Lim and Dr. Figueroa have no relevant financial disclosures.

Pleural mesothelioma is generally treated by extended pleurectomy decortication, and there has been little improvement in systemic treatment of early-stage, resectable mesothelioma, which has led to the recommendations of maximum cytoreduction. U.S. and European guidelines, as well as an international consensus statement, support this approach, but it has never been tested in a randomized, controlled trial.

Now it has, and the result is surprising: Surgery led to reduced survival and more serious adverse events, compared with chemotherapy alone. The conclusion was uncomfortable for Eric Lim, MD, who presented the results of the MARS2 trial at the annual World Conference on Lung Cancer. “Ladies and gentlemen, as a surgeon standing here, you have no idea how much it pains me to conclude that extended pleurectomy decortication, an operation that we have been offering for over 70 years, has been associated with a higher risk of death, more serious complications, poorer quality of life, and higher costs, compared to mesothelioma patients who were randomized to chemotherapy alone,” said Dr. Lim of the Royal Brompton Hospital, London, during his presentation.

Although the line drew laughter and applause from the audience, Paula Ugalde Figueroa, MD, who served as a discussant, raised some concerns about the study. Disease presence in one hemithorax was assessed only by chest CT scan, which is notorious for underestimating the volume of disease during surgery. There was also no information on pleural effusion or how many patients received it prior to intervention. Existing guidelines suggest staging of mesothelioma should also use PET scans, and invasive mediastinal staging should be assessed with endobronchial ultrasound. “None of these were performed during the trial,” said Dr. Figueroa, who is an associate thoracic surgeon at Brigham and Women’s Hospital, Boston. “At this point, my question is, are the arms of this study well balanced in regard to tumor volume? We don’t know,” she added.

Dr. Figueroa noted that the 90-day mortality seemed higher than that seen in other studies. “So, does the surgeon’s experience and center volume affect the outcome of this study?” she asked. Dr. Figueroa personally made phone calls to the participating centers and found that 45% of the patients in the trial were treated at low-volume centers, defined by her as two to three patients per year. “Should we assume that their surgical outcomes are similar between those centers? In this trial, with approximately half of patients from low-volume centers, extended pleurectomy decortication for mesothelioma had no significant difference when compared to those patients that underwent chemotherapy alone. Would the outcome be different in exclusively high-volume centers?” she concluded.

The study randomized 335 patients to receive surgery and chemotherapy, or chemotherapy alone. They received two cycles of platinum-based chemotherapy and pemetrexed prior to surgery and up to four cycles after surgery. The average age was 69 years; 86.9% were male, and 85.7% of tumors were epithelioid only. Among those in the surgery group, 88.5% underwent extended pleurectomy/decortication, 8.3% underwent pleurectomy decortication, 1.9% underwent partial pleurectomy, 0.6% exploration with no pleurodesis, and 0.6% were classified as “other” surgery. Completeness of resection was R0 in 3.2% of surgeries, R1 in 80.9%, and R2 in 15.9%. In-hospital mortality occurred in 3.8% of patients, and postsurgical 90-day mortality was 8.9%.

Over the first 42 months of follow-up, the hazard ratio for overall survival was 1.28 in the no-surgery group (P = .03). “The survival was so good in this early-stage cohort that we had to extend the trial by 6 months to get the prerequisite number of deaths, underscoring the phenomenal importance of having a randomized comparative cohort for all future studies on surgery for mesothelioma,” said Dr. Lim.

After 42 months, there was no survival difference between the two groups (hazard ratio, 0.48; P = .15). Dr. Lim attributed the change at 42 months to the fact that only 15 patients remained in each arm at that stage. There was no significant difference between the two groups with respect to progression-free survival.

The survival benefit of the no-surgery group was sustained after additional analyses, including adjustment of the number of first-line chemotherapy cycles and immunotherapy received after completion of the trial protocol.

Adverse events were more common in the surgery group (incidence rate ratio, 3.6; P < .001), including any cardiac disorder (IRR, 2.73; 95% confidence interval, 1.11-6.67); any infection or infestation (IRR, 1.99; 95% CI, 1.33-2.99); any respiratory, thoracic, or mediastinal disorder (IRR, 2.40; 95% CI, 1.52-3.80); and any surgical or medical procedure (IRR, 2.23; 95% CI, 1.04-4.78). The EORTC quality of life score favored the nonsurgery group at 6 weeks, but there was no significant difference at other time points.

Dr. Lim and Dr. Figueroa have no relevant financial disclosures.

America’s most popular oral nasal decongestant, phenylephrine, was deemed ineffective by a Food and Drug Administration panel in a unanimous vote on Sept. 12.

The Nonprescription Drug Advisory Committee discussed the efficacy and pharmacokinetic data for phenylephrine. The committee’s next move is to determine if the drug’s status as Generally Recognized as Safe and Effective should be revoked. This would mean manufacturers would have to come up with new formulations, or products containing the drug would be removed from store shelves. NDAC did not disclose a timeline for assessing GRASE status.

A version of this article appeared on Medscape.com.

America’s most popular oral nasal decongestant, phenylephrine, was deemed ineffective by a Food and Drug Administration panel in a unanimous vote on Sept. 12.

The Nonprescription Drug Advisory Committee discussed the efficacy and pharmacokinetic data for phenylephrine. The committee’s next move is to determine if the drug’s status as Generally Recognized as Safe and Effective should be revoked. This would mean manufacturers would have to come up with new formulations, or products containing the drug would be removed from store shelves. NDAC did not disclose a timeline for assessing GRASE status.

A version of this article appeared on Medscape.com.

America’s most popular oral nasal decongestant, phenylephrine, was deemed ineffective by a Food and Drug Administration panel in a unanimous vote on Sept. 12.

The Nonprescription Drug Advisory Committee discussed the efficacy and pharmacokinetic data for phenylephrine. The committee’s next move is to determine if the drug’s status as Generally Recognized as Safe and Effective should be revoked. This would mean manufacturers would have to come up with new formulations, or products containing the drug would be removed from store shelves. NDAC did not disclose a timeline for assessing GRASE status.

A version of this article appeared on Medscape.com.

TOPLINE:

A small, randomized, double-blind, placebo-controlled trial in Thailand suggests that turmeric has comparable efficacy to omeprazole for treating functional dyspepsia.

METHODOLOGY:

• The researchers randomly assigned 206 patients to receive curcumin – the active ingredient in turmeric – alone; omeprazole alone; or curcumin plus omeprazole for 28 days. A total of 151 patients completed the study.
• Doses were two 250-mg curcumin pills four times daily, plus one placebo pill; one 20-mg omeprazole pill daily, plus two placebo pills four times daily; or two 250-mg curcumin pills four times daily, plus one 20-mg omeprazole pill once daily.
• Symptoms of functional dyspepsia were assessed on days 28 and 56 using the Severity of Dyspepsia Assessment (SODA) score.

TAKEAWAY:

• In the combined group, the curcumin-alone group, and the omeprazole-alone group, SODA scores for pain severity declined significantly by day 28 (–4.83, –5.46, and –6.22, respectively), as did scores for severity of other symptoms (–2.22, –2.32, and –2.31, respectively).
• Symptom improvements were even stronger by day 56 for pain (–7.19, –8.07, –8.85) and other symptoms (–4.09, –4.12, –3.71) in the same groups.
• Curcumin was safe and well tolerated, but satisfaction scores did not change significantly over time among those taking it, suggesting the possible need for improvement in its taste or smell.
• There was no synergistic effect between omeprazole and curcumin.

IN PRACTICE:

“The new findings from our study may justify considering curcumin in clinical practice. This multicenter, randomized, controlled trial provides highly reliable evidence for the treatment of functional dyspepsia,” the authors wrote.

SOURCE:

Pradermchai Kongkam, MD, of Chulalongkorn University, Bangkok, and Wichittra Khongkha of Chao Phraya Abhaibhubejhr Hospital, Prachin Buri, Thailand, are joint first authors. The study was published online in BMJ Evidence-Based Medicine.

LIMITATIONS:

A small number of participants in each group were lost to follow-up, and the follow-up period was short (less than 2 months) for all.

DISCLOSURES:

The study was funded by the Thai Traditional and Alternative Medicine Fund. The authors have disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

TOPLINE:

A small, randomized, double-blind, placebo-controlled trial in Thailand suggests that turmeric has comparable efficacy to omeprazole for treating functional dyspepsia.

METHODOLOGY:

• The researchers randomly assigned 206 patients to receive curcumin – the active ingredient in turmeric – alone; omeprazole alone; or curcumin plus omeprazole for 28 days. A total of 151 patients completed the study.
• Doses were two 250-mg curcumin pills four times daily, plus one placebo pill; one 20-mg omeprazole pill daily, plus two placebo pills four times daily; or two 250-mg curcumin pills four times daily, plus one 20-mg omeprazole pill once daily.
• Symptoms of functional dyspepsia were assessed on days 28 and 56 using the Severity of Dyspepsia Assessment (SODA) score.

TAKEAWAY:

• In the combined group, the curcumin-alone group, and the omeprazole-alone group, SODA scores for pain severity declined significantly by day 28 (–4.83, –5.46, and –6.22, respectively), as did scores for severity of other symptoms (–2.22, –2.32, and –2.31, respectively).
• Symptom improvements were even stronger by day 56 for pain (–7.19, –8.07, –8.85) and other symptoms (–4.09, –4.12, –3.71) in the same groups.
• Curcumin was safe and well tolerated, but satisfaction scores did not change significantly over time among those taking it, suggesting the possible need for improvement in its taste or smell.
• There was no synergistic effect between omeprazole and curcumin.

IN PRACTICE:

“The new findings from our study may justify considering curcumin in clinical practice. This multicenter, randomized, controlled trial provides highly reliable evidence for the treatment of functional dyspepsia,” the authors wrote.

SOURCE:

Pradermchai Kongkam, MD, of Chulalongkorn University, Bangkok, and Wichittra Khongkha of Chao Phraya Abhaibhubejhr Hospital, Prachin Buri, Thailand, are joint first authors. The study was published online in BMJ Evidence-Based Medicine.

LIMITATIONS:

A small number of participants in each group were lost to follow-up, and the follow-up period was short (less than 2 months) for all.

DISCLOSURES:

The study was funded by the Thai Traditional and Alternative Medicine Fund. The authors have disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

TOPLINE:

A small, randomized, double-blind, placebo-controlled trial in Thailand suggests that turmeric has comparable efficacy to omeprazole for treating functional dyspepsia.

METHODOLOGY:

• The researchers randomly assigned 206 patients to receive curcumin – the active ingredient in turmeric – alone; omeprazole alone; or curcumin plus omeprazole for 28 days. A total of 151 patients completed the study.
• Doses were two 250-mg curcumin pills four times daily, plus one placebo pill; one 20-mg omeprazole pill daily, plus two placebo pills four times daily; or two 250-mg curcumin pills four times daily, plus one 20-mg omeprazole pill once daily.
• Symptoms of functional dyspepsia were assessed on days 28 and 56 using the Severity of Dyspepsia Assessment (SODA) score.

TAKEAWAY:

• In the combined group, the curcumin-alone group, and the omeprazole-alone group, SODA scores for pain severity declined significantly by day 28 (–4.83, –5.46, and –6.22, respectively), as did scores for severity of other symptoms (–2.22, –2.32, and –2.31, respectively).
• Symptom improvements were even stronger by day 56 for pain (–7.19, –8.07, –8.85) and other symptoms (–4.09, –4.12, –3.71) in the same groups.
• Curcumin was safe and well tolerated, but satisfaction scores did not change significantly over time among those taking it, suggesting the possible need for improvement in its taste or smell.
• There was no synergistic effect between omeprazole and curcumin.

IN PRACTICE:

“The new findings from our study may justify considering curcumin in clinical practice. This multicenter, randomized, controlled trial provides highly reliable evidence for the treatment of functional dyspepsia,” the authors wrote.

SOURCE:

Pradermchai Kongkam, MD, of Chulalongkorn University, Bangkok, and Wichittra Khongkha of Chao Phraya Abhaibhubejhr Hospital, Prachin Buri, Thailand, are joint first authors. The study was published online in BMJ Evidence-Based Medicine.

LIMITATIONS:

A small number of participants in each group were lost to follow-up, and the follow-up period was short (less than 2 months) for all.

DISCLOSURES:

The study was funded by the Thai Traditional and Alternative Medicine Fund. The authors have disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

More than 10 hours a day of sedentary behavior significantly increases the risk of dementia in older adults, a new study suggests.

The study of nearly 50,000 adults in the UK Biobank shows that dementia risk increased 8% with 10 hours of sedentary time and 63% with 12 hours. That’s particularly concerning because Americans spend an average of 9.5 hours a day sitting.

Sleep wasn’t factored into the sedentary time and how someone accumulated the 10 hours – either in one continuous block or broken up throughout the day – was irrelevant.

“Our analysis cannot determine whether there is a causal link, so prescriptive conclusions are not really possible; however. I think it is very reasonable to conclude that sitting less and moving more may help reduce risk of dementia,” lead investigator David Raichlen, PhD, professor of biological sciences and anthropology, University of Southern California, Los Angeles, said in an interview.

The findings were published online in JAMA.
 

A surprising find?

The study is a retrospective analysis of prospectively collected data from the UK Biobank of 49,841 adults aged 60 years or older who wore an accelerometer on their wrists 24 hours a day for a week. Participants had no history of dementia when they wore the movement monitoring device.

Investigators used machine-based learning to determine sedentary time based on readings from the accelerometers. Sleep was not included as sedentary behavior.

Over a mean follow-up of 6.72 years, 414 participants were diagnosed with dementia.

Investigators found that dementia risk rises by 8% at 10 hours a day (adjusted hazard ratio, 1.08; P < .001) and 63% at 12 hours a day (aHR, 1.63; P < .001), compared with 9.27 hours a day. Those who logged 15 hours of sedentary behavior a day had more than triple the dementia risk (aHR, 3.21; P < .001).

Although previous studies had found that breaking up sedentary periods with short bursts of activity help offset some negative health effects of sitting, that wasn’t the case here. Dementia risk was elevated whether participants were sedentary for 10 uninterrupted hours or multiple sedentary periods that totaled 10 hours over the whole day.

“This was surprising,” Dr. Raichlen said. “We expected to find that patterns of sedentary behavior would play a role in risk of dementia, but once you take into account the daily volume of time spent sedentary, how you get there doesn’t seem to matter as much.”

The study did not examine how participants spent sedentary time, but an earlier study by Dr. Raichlen found that watching TV was associated with a greater risk of dementia in older adults, compared with working on a computer.
 

More research welcome

Dr. Raichlen noted that the number of dementia cases in the study is low and that the view of sedentary behavior is based on 1 week of accelerometer readings. A longitudinal study is needed to determine if the findings last over a longer time period.

In a comment, Claire Sexton, DPhil, senior director of scientific programs and outreach for the Alzheimer’s Association, says that earlier studies reported an association between sedentary time and dementia, so these results aren’t “particularly surprising.”

“However, reports that did not find an association have also been published, so additional research on possible associations is welcome,” she said.

It’s also important to note that this observational study doesn’t establish a causal relationship between inactivity and cognitive function, which Dr. Sexton said means the influence of other dementia risk factors that are also exacerbated by sedentary behavior can’t be ruled out.

“Although results remained significant after adjusting for several of these factors, further research is required to better understand the various elements that may influence the observed relationship,” noted Dr. Sexton, who was not part of the study. “Reverse causality – that changes in the brain related to dementia are causing the sedentary behavior – cannot be ruled out.”

The study was funded by the National Institutes of Health, the state of Arizona, the Arizona Department of Health Services, and the McKnight Brain Research Foundation. Dr. Raichlen and Dr. Sexton report no relevant financial relationships.

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

More than 10 hours a day of sedentary behavior significantly increases the risk of dementia in older adults, a new study suggests.

The study of nearly 50,000 adults in the UK Biobank shows that dementia risk increased 8% with 10 hours of sedentary time and 63% with 12 hours. That’s particularly concerning because Americans spend an average of 9.5 hours a day sitting.

Sleep wasn’t factored into the sedentary time and how someone accumulated the 10 hours – either in one continuous block or broken up throughout the day – was irrelevant.

“Our analysis cannot determine whether there is a causal link, so prescriptive conclusions are not really possible; however. I think it is very reasonable to conclude that sitting less and moving more may help reduce risk of dementia,” lead investigator David Raichlen, PhD, professor of biological sciences and anthropology, University of Southern California, Los Angeles, said in an interview.

The findings were published online in JAMA.
 

A surprising find?

The study is a retrospective analysis of prospectively collected data from the UK Biobank of 49,841 adults aged 60 years or older who wore an accelerometer on their wrists 24 hours a day for a week. Participants had no history of dementia when they wore the movement monitoring device.

Investigators used machine-based learning to determine sedentary time based on readings from the accelerometers. Sleep was not included as sedentary behavior.

Over a mean follow-up of 6.72 years, 414 participants were diagnosed with dementia.

Investigators found that dementia risk rises by 8% at 10 hours a day (adjusted hazard ratio, 1.08; P < .001) and 63% at 12 hours a day (aHR, 1.63; P < .001), compared with 9.27 hours a day. Those who logged 15 hours of sedentary behavior a day had more than triple the dementia risk (aHR, 3.21; P < .001).

Although previous studies had found that breaking up sedentary periods with short bursts of activity help offset some negative health effects of sitting, that wasn’t the case here. Dementia risk was elevated whether participants were sedentary for 10 uninterrupted hours or multiple sedentary periods that totaled 10 hours over the whole day.

“This was surprising,” Dr. Raichlen said. “We expected to find that patterns of sedentary behavior would play a role in risk of dementia, but once you take into account the daily volume of time spent sedentary, how you get there doesn’t seem to matter as much.”

The study did not examine how participants spent sedentary time, but an earlier study by Dr. Raichlen found that watching TV was associated with a greater risk of dementia in older adults, compared with working on a computer.
 

More research welcome

Dr. Raichlen noted that the number of dementia cases in the study is low and that the view of sedentary behavior is based on 1 week of accelerometer readings. A longitudinal study is needed to determine if the findings last over a longer time period.

In a comment, Claire Sexton, DPhil, senior director of scientific programs and outreach for the Alzheimer’s Association, says that earlier studies reported an association between sedentary time and dementia, so these results aren’t “particularly surprising.”

“However, reports that did not find an association have also been published, so additional research on possible associations is welcome,” she said.

It’s also important to note that this observational study doesn’t establish a causal relationship between inactivity and cognitive function, which Dr. Sexton said means the influence of other dementia risk factors that are also exacerbated by sedentary behavior can’t be ruled out.

“Although results remained significant after adjusting for several of these factors, further research is required to better understand the various elements that may influence the observed relationship,” noted Dr. Sexton, who was not part of the study. “Reverse causality – that changes in the brain related to dementia are causing the sedentary behavior – cannot be ruled out.”

The study was funded by the National Institutes of Health, the state of Arizona, the Arizona Department of Health Services, and the McKnight Brain Research Foundation. Dr. Raichlen and Dr. Sexton report no relevant financial relationships.

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

More than 10 hours a day of sedentary behavior significantly increases the risk of dementia in older adults, a new study suggests.

The study of nearly 50,000 adults in the UK Biobank shows that dementia risk increased 8% with 10 hours of sedentary time and 63% with 12 hours. That’s particularly concerning because Americans spend an average of 9.5 hours a day sitting.

Sleep wasn’t factored into the sedentary time and how someone accumulated the 10 hours – either in one continuous block or broken up throughout the day – was irrelevant.

“Our analysis cannot determine whether there is a causal link, so prescriptive conclusions are not really possible; however. I think it is very reasonable to conclude that sitting less and moving more may help reduce risk of dementia,” lead investigator David Raichlen, PhD, professor of biological sciences and anthropology, University of Southern California, Los Angeles, said in an interview.

The findings were published online in JAMA.
 

A surprising find?

The study is a retrospective analysis of prospectively collected data from the UK Biobank of 49,841 adults aged 60 years or older who wore an accelerometer on their wrists 24 hours a day for a week. Participants had no history of dementia when they wore the movement monitoring device.

Investigators used machine-based learning to determine sedentary time based on readings from the accelerometers. Sleep was not included as sedentary behavior.

Over a mean follow-up of 6.72 years, 414 participants were diagnosed with dementia.

Investigators found that dementia risk rises by 8% at 10 hours a day (adjusted hazard ratio, 1.08; P < .001) and 63% at 12 hours a day (aHR, 1.63; P < .001), compared with 9.27 hours a day. Those who logged 15 hours of sedentary behavior a day had more than triple the dementia risk (aHR, 3.21; P < .001).

Although previous studies had found that breaking up sedentary periods with short bursts of activity help offset some negative health effects of sitting, that wasn’t the case here. Dementia risk was elevated whether participants were sedentary for 10 uninterrupted hours or multiple sedentary periods that totaled 10 hours over the whole day.

“This was surprising,” Dr. Raichlen said. “We expected to find that patterns of sedentary behavior would play a role in risk of dementia, but once you take into account the daily volume of time spent sedentary, how you get there doesn’t seem to matter as much.”

The study did not examine how participants spent sedentary time, but an earlier study by Dr. Raichlen found that watching TV was associated with a greater risk of dementia in older adults, compared with working on a computer.
 

More research welcome

Dr. Raichlen noted that the number of dementia cases in the study is low and that the view of sedentary behavior is based on 1 week of accelerometer readings. A longitudinal study is needed to determine if the findings last over a longer time period.

In a comment, Claire Sexton, DPhil, senior director of scientific programs and outreach for the Alzheimer’s Association, says that earlier studies reported an association between sedentary time and dementia, so these results aren’t “particularly surprising.”

“However, reports that did not find an association have also been published, so additional research on possible associations is welcome,” she said.

It’s also important to note that this observational study doesn’t establish a causal relationship between inactivity and cognitive function, which Dr. Sexton said means the influence of other dementia risk factors that are also exacerbated by sedentary behavior can’t be ruled out.

“Although results remained significant after adjusting for several of these factors, further research is required to better understand the various elements that may influence the observed relationship,” noted Dr. Sexton, who was not part of the study. “Reverse causality – that changes in the brain related to dementia are causing the sedentary behavior – cannot be ruled out.”

The study was funded by the National Institutes of Health, the state of Arizona, the Arizona Department of Health Services, and the McKnight Brain Research Foundation. Dr. Raichlen and Dr. Sexton report no relevant financial relationships.

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

When Ryan (not his real name), 37, returned home from two deployments with the 101st Airborne Division in Iraq from 2005 to 2008, he began withdrawing from social situations and experienced chronic anxiety. Nights brought no respite – his sleep was interrupted by punishing nightmares.

“I had every calling card of a veteran in distress,” he said in an interview. When his wife told him she thought he may have posttraumatic stress disorder (PTSD), he shrugged it off. “I wasn’t automatically going to accept [the diagnosis] because as an infantry veteran, we’re big tough guys. We don’t need help with anything.”

Ryan’s wife had heard of a program called Northwest Battle Buddies (NWBB) that pairs professionally trained dogs with veterans struggling with PTSD. The dogs, mostly recruited from rescue organizations, receive 5-7 months of specialized training to assist the veterans.
 

Life-changing help

While Ryan was skeptical about the program and whether it would work for him, he agreed to try it. After working with Bullet, a cream-colored golden retriever, he realized his life was improving.

“I stopped self-medicating, started advocating for myself, and became more comfortable socializing in public.” In his 3 years with Bullet, Ryan was able to work on his marriage, advance his career, and become a homeowner.

“The dreams I never thought were attainable started coming to fruition, and I was happy and comfortable for the first time in as long as I could remember.”

Unfortunately, Bullet died from a rare heart condition after a few years, and when that happened, NWBB immediately began working with Ryan to find him a new dog to fill the void left by Bullet.

Soon, Ryan began working with Twitch, who, like Bullet, knew when Ryan was becoming anxious, angry, or depressed before he did, he said.

“These dogs pick up on PTSD symptoms and come over and press themselves against you, push their faces into yours, and give you those big puppy dog eyes as if to say, ‘I got you. Everything is going to be okay.’ ”

The same thing happened when Ryan had night terrors and nightmares. “These dogs wake you up, and again, you’re greeted with this sweet puppy dog face.”

NWBB founder and CEO Shannon Walker, who has been training dogs for 25 years and whose father served in the U.S. Air Force in the 1950s, leads a 5-week training course for the veterans and their “battle buddies” so that the veterans can learn how to bond with and benefit from their new service dogs.
 

Finding the perfect match

Veterans are paired with trained service dogs based on their lifestyle and personality. For instance, a Vietnam veteran who is having trouble walking may be paired with a calm dog while a younger veteran who runs each morning is paired with a more active dog.

NWBB operates on funds from private donors and nonprofit organizations that make it financially feasible for the veterans to travel to Washington State and stay for the time required to train with their service dogs.

“Our service dogs are there in the midnight hour when no one else is,” she said. “Our veterans are fighting internal battles that no one else sees but the dogs. The dogs alert on their adrenaline and bring them back to the moment of now, interrupting suicidal ideations, panic attacks, and night terrors.”

Joshua Morganstein, MD, chair of the American Psychiatric Association’s Committee on the Psychiatric Dimensions of Disaster, said in an interview that “PTSD can be devastating for service members and veterans and is often associated with comorbid mental health conditions, such as anxiety and substance use.”

He noted that for many people, dogs and other animals can be an important source of physical, emotional, and psychological comfort.

“Programs like the Northwest Battle Buddies are important for us to study and better understand the extent to which trained animals are able to help alleviate the symptoms of PTSD and associated disorders and, perhaps most importantly, enhance the ability of service members and veterans to function and live in ways that feel healthy and productive to them,” said Dr. Morganstein.

He added that the concept of a “battle buddy” is a term pioneered by the U.S. Army in 2002 and describes a “formal, rather than ad hoc, system of peer support in which service members are assigned buddies.

“Buddies look out for each other, encourage self-care and self-advocacy and, when needed, help their buddy to seek help. Buddies remind us that someone is looking out for us and there is someone we look out for as well, both of which are protective during difficult times,” he said.

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

When Ryan (not his real name), 37, returned home from two deployments with the 101st Airborne Division in Iraq from 2005 to 2008, he began withdrawing from social situations and experienced chronic anxiety. Nights brought no respite – his sleep was interrupted by punishing nightmares.

“I had every calling card of a veteran in distress,” he said in an interview. When his wife told him she thought he may have posttraumatic stress disorder (PTSD), he shrugged it off. “I wasn’t automatically going to accept [the diagnosis] because as an infantry veteran, we’re big tough guys. We don’t need help with anything.”

Ryan’s wife had heard of a program called Northwest Battle Buddies (NWBB) that pairs professionally trained dogs with veterans struggling with PTSD. The dogs, mostly recruited from rescue organizations, receive 5-7 months of specialized training to assist the veterans.
 

Life-changing help

While Ryan was skeptical about the program and whether it would work for him, he agreed to try it. After working with Bullet, a cream-colored golden retriever, he realized his life was improving.

“I stopped self-medicating, started advocating for myself, and became more comfortable socializing in public.” In his 3 years with Bullet, Ryan was able to work on his marriage, advance his career, and become a homeowner.

“The dreams I never thought were attainable started coming to fruition, and I was happy and comfortable for the first time in as long as I could remember.”

Unfortunately, Bullet died from a rare heart condition after a few years, and when that happened, NWBB immediately began working with Ryan to find him a new dog to fill the void left by Bullet.

Soon, Ryan began working with Twitch, who, like Bullet, knew when Ryan was becoming anxious, angry, or depressed before he did, he said.

“These dogs pick up on PTSD symptoms and come over and press themselves against you, push their faces into yours, and give you those big puppy dog eyes as if to say, ‘I got you. Everything is going to be okay.’ ”

The same thing happened when Ryan had night terrors and nightmares. “These dogs wake you up, and again, you’re greeted with this sweet puppy dog face.”

NWBB founder and CEO Shannon Walker, who has been training dogs for 25 years and whose father served in the U.S. Air Force in the 1950s, leads a 5-week training course for the veterans and their “battle buddies” so that the veterans can learn how to bond with and benefit from their new service dogs.
 

Finding the perfect match

Veterans are paired with trained service dogs based on their lifestyle and personality. For instance, a Vietnam veteran who is having trouble walking may be paired with a calm dog while a younger veteran who runs each morning is paired with a more active dog.

NWBB operates on funds from private donors and nonprofit organizations that make it financially feasible for the veterans to travel to Washington State and stay for the time required to train with their service dogs.

“Our service dogs are there in the midnight hour when no one else is,” she said. “Our veterans are fighting internal battles that no one else sees but the dogs. The dogs alert on their adrenaline and bring them back to the moment of now, interrupting suicidal ideations, panic attacks, and night terrors.”

Joshua Morganstein, MD, chair of the American Psychiatric Association’s Committee on the Psychiatric Dimensions of Disaster, said in an interview that “PTSD can be devastating for service members and veterans and is often associated with comorbid mental health conditions, such as anxiety and substance use.”

He noted that for many people, dogs and other animals can be an important source of physical, emotional, and psychological comfort.

“Programs like the Northwest Battle Buddies are important for us to study and better understand the extent to which trained animals are able to help alleviate the symptoms of PTSD and associated disorders and, perhaps most importantly, enhance the ability of service members and veterans to function and live in ways that feel healthy and productive to them,” said Dr. Morganstein.

He added that the concept of a “battle buddy” is a term pioneered by the U.S. Army in 2002 and describes a “formal, rather than ad hoc, system of peer support in which service members are assigned buddies.

“Buddies look out for each other, encourage self-care and self-advocacy and, when needed, help their buddy to seek help. Buddies remind us that someone is looking out for us and there is someone we look out for as well, both of which are protective during difficult times,” he said.

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

When Ryan (not his real name), 37, returned home from two deployments with the 101st Airborne Division in Iraq from 2005 to 2008, he began withdrawing from social situations and experienced chronic anxiety. Nights brought no respite – his sleep was interrupted by punishing nightmares.

“I had every calling card of a veteran in distress,” he said in an interview. When his wife told him she thought he may have posttraumatic stress disorder (PTSD), he shrugged it off. “I wasn’t automatically going to accept [the diagnosis] because as an infantry veteran, we’re big tough guys. We don’t need help with anything.”

Ryan’s wife had heard of a program called Northwest Battle Buddies (NWBB) that pairs professionally trained dogs with veterans struggling with PTSD. The dogs, mostly recruited from rescue organizations, receive 5-7 months of specialized training to assist the veterans.
 

Life-changing help

While Ryan was skeptical about the program and whether it would work for him, he agreed to try it. After working with Bullet, a cream-colored golden retriever, he realized his life was improving.

“I stopped self-medicating, started advocating for myself, and became more comfortable socializing in public.” In his 3 years with Bullet, Ryan was able to work on his marriage, advance his career, and become a homeowner.

“The dreams I never thought were attainable started coming to fruition, and I was happy and comfortable for the first time in as long as I could remember.”

Unfortunately, Bullet died from a rare heart condition after a few years, and when that happened, NWBB immediately began working with Ryan to find him a new dog to fill the void left by Bullet.

Soon, Ryan began working with Twitch, who, like Bullet, knew when Ryan was becoming anxious, angry, or depressed before he did, he said.

“These dogs pick up on PTSD symptoms and come over and press themselves against you, push their faces into yours, and give you those big puppy dog eyes as if to say, ‘I got you. Everything is going to be okay.’ ”

The same thing happened when Ryan had night terrors and nightmares. “These dogs wake you up, and again, you’re greeted with this sweet puppy dog face.”

NWBB founder and CEO Shannon Walker, who has been training dogs for 25 years and whose father served in the U.S. Air Force in the 1950s, leads a 5-week training course for the veterans and their “battle buddies” so that the veterans can learn how to bond with and benefit from their new service dogs.
 

Finding the perfect match

Veterans are paired with trained service dogs based on their lifestyle and personality. For instance, a Vietnam veteran who is having trouble walking may be paired with a calm dog while a younger veteran who runs each morning is paired with a more active dog.

NWBB operates on funds from private donors and nonprofit organizations that make it financially feasible for the veterans to travel to Washington State and stay for the time required to train with their service dogs.

“Our service dogs are there in the midnight hour when no one else is,” she said. “Our veterans are fighting internal battles that no one else sees but the dogs. The dogs alert on their adrenaline and bring them back to the moment of now, interrupting suicidal ideations, panic attacks, and night terrors.”

Joshua Morganstein, MD, chair of the American Psychiatric Association’s Committee on the Psychiatric Dimensions of Disaster, said in an interview that “PTSD can be devastating for service members and veterans and is often associated with comorbid mental health conditions, such as anxiety and substance use.”

He noted that for many people, dogs and other animals can be an important source of physical, emotional, and psychological comfort.

“Programs like the Northwest Battle Buddies are important for us to study and better understand the extent to which trained animals are able to help alleviate the symptoms of PTSD and associated disorders and, perhaps most importantly, enhance the ability of service members and veterans to function and live in ways that feel healthy and productive to them,” said Dr. Morganstein.

He added that the concept of a “battle buddy” is a term pioneered by the U.S. Army in 2002 and describes a “formal, rather than ad hoc, system of peer support in which service members are assigned buddies.

“Buddies look out for each other, encourage self-care and self-advocacy and, when needed, help their buddy to seek help. Buddies remind us that someone is looking out for us and there is someone we look out for as well, both of which are protective during difficult times,” he said.

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

Antibody-drug conjugates (ADC) link a tumor-targeted antibody to a cytotoxic drug through a chemical linker and hold the promise of high potency. This has led to a burgeoning interest in solid tumors, with over 100 clinical trials in progress. Non–small cell lung cancer (NSCLC) is no exception. In 2022, the Food and Drug Administration approved trastuzumab DXd for pretreated NSCLC patients with HER2-mutant tumors. Two others have lung cancer breakthrough therapy designations from the FDA, including patritumab deruxtecan (HER3-DXd) for EGFR-mutant NSCLC and telisotuzumab vedotin for NSCLC that overexpresses c-Met.

At the annual World Conference on Lung Cancer, researchers outlined some of the latest developments in ADCs targeting the antigens HER3, trophoblast cell-surface antigen 2 (TROP-2), and the B7-H3 immunoregulatory protein, as single agents or in combination with immunotherapy. Following the presentations, discussant Helena Linardou, MD, PhD, emphasized the need for pharmacogenomics to predict toxicity and studies to understand resistance mechanisms. “ADCs are a new, rapidly evolving class of therapeutics, and I think that we will all have to be prepared for the future that is coming,” said Dr. Linardou, who is director of the 4th oncology department and the Comprehensive Clinical Trials Center at Metropolitan Hospital in Athens.

Researchers presented four ADC clinical trial updates.
 

Patritumab deruxtecan

Patritumab deruxtecan (Daiichi Sankyo) links a HER3 antibody to the topoisomerase I inhibitor deruxtecan (HER3-DXd). In the open-label, phase 2 HERTHENA-Lung01 trial, it was tested in patients with NSCLC EGFR-activation mutations, which occurs in 14%-38% of NSCLC cases. There are few options for these patients following failure of EGFR tyrosine kinase inhibitor therapy.

The study included 225 patients previously treated with EGFR tyrosine kinase inhibitors and platinum-based chemotherapy who received 5.6 mg/kg of HER3-DXd every 3 weeks. Over a median follow-up of 13.1 months and a median treatment duration of 5.5 months), 29.8% had a confirmed overall response (95% confidence interval, 23.9%-36.2%) with a median duration of 6.4 months (95% CI, 4.9-7.8). The median progression-free survival was 5.5 months (95% CI, 5.1-5.9), and the median OS was 11.9 months (95% CI, 11.2-13.1). The researchers noted similar outcomes among patients with different mechanisms of EGFR TKI resistance. The frequency of adverse events was similar to previous studies, with drug-related adverse events linked to treatment discontinuation of 7.1% interstitial lung disease in 5.3%. Among 30 patients with brain metastases, the confirmed intracranial response rate was 33.3% (95% CI, 17.3%-52.8%).

The study was published simultaneously online in the Journal of Clinical Oncology. (Abstract)
 

Datopotamab deruxtecan

PD-1/PD-L1 inhibitors are the first-line therapy for metastatic NSCLC, but there are efforts to improve outcomes through combination therapy. Datopotamab deruxtecan (Dato-DXd, Daiichi Sankyo, AstraZeneca) is an ADC targeting TROP2, and it has been shown in preclinical studies to enhance tumor responses to PD-1/PD-L1 inhibitors. The ADC improved progression-free survival (PFS), compared with docetaxel, in previously treated advanced or metastatic NSCLC.

In an interim analysis of the phase 1b TROPION-Lung04 study, researchers reported results from the combination of Dato-DXd with durvalumab with or without carboplatin. The study included 38 patients, some of whom had previously undergone treatment with immune checkpoint inhibitors. Nineteen patients received the doublet, and 14 received the carboplatin triplet. Grade 3 or higher treatment-emergent adverse events occurred in 42.1% of the doublet group and 71.4% of the triplet group. Interstitial lung disease occurred in 15.8% and 7.1% of the two groups, respectively. The objective response rate was 50.0% in the doublet group and 76.9% in the triplet group. The disease control rate was 92.9% and 92.3%, respectively. Durable responses occurred in both the first-line setting and the overall population. (Abstract)
 

Sacituzumab govitecan

Another ADC being tested with PD-1/PD-L1 inhibitors is sacituzumab govitecan (Trodelvy, Gilead), which has already received FDA approval for metastatic triple-negative breast cancer, pretreated HR+/HER2- metastatic breast cancer, and metastatic urothelial cancer. Like datopotamab, sacituzumab targets TROP-2. Researchers reported preliminary results from the phase 2 EVOKE-02 study, in which the ADC was combined with pembrolizumab for the first-line treatment of metastatic NSCLC. The overall response rate was 56% (95% CI, 42%-69%). Among patients with PD-L1 tumor proportion score (TPS) ≥ 50%, the ORR was 69% (95% CI, 49%-85%) and 44% (95% CI, 26%-62%) among those with TPS < 50%. The disease control rate was 86% (95% CI, 68%-96%) and 78% (95% CI, 60%-91%), respectively. The most frequent treatment-emergent adverse events (TEAEs) were diarrhea, anemia, and asthenia, and 18% of patients discontinued the study drug because of TEAEs. (Abstract)

Ifinatamab deruxtecan

Ifinatamab deruxtecan (Daiichi Sankyo) targets the B7-H3 antigen, which is an immunoregulatory protein that is overexpressed in many tumors. In the DS7300-A-J101 study, it was tested in patients with advanced or metastatic solid tumors, without selection for B7-H3 expression. A subgroup analysis of 22 patients with small cell lung cancer (SCLC) showed an ORR of 52.4 (95% CI, 29.8-74.3), a complete response of 4.8%, and a partial response in 47.6%. The median PFS was 5.6 months (95% CI, 3.9-8.1) and median OS was 12.2 months (95% CI, 6.4-not applicable). The most common treatment-emergent adverse events were nausea (59.1%), fatigue (50.0%), anemia (27.3%), vomiting (27.3%), and decreased appetite (22.7%). (Abstract)

Antibody-drug conjugates (ADC) link a tumor-targeted antibody to a cytotoxic drug through a chemical linker and hold the promise of high potency. This has led to a burgeoning interest in solid tumors, with over 100 clinical trials in progress. Non–small cell lung cancer (NSCLC) is no exception. In 2022, the Food and Drug Administration approved trastuzumab DXd for pretreated NSCLC patients with HER2-mutant tumors. Two others have lung cancer breakthrough therapy designations from the FDA, including patritumab deruxtecan (HER3-DXd) for EGFR-mutant NSCLC and telisotuzumab vedotin for NSCLC that overexpresses c-Met.

At the annual World Conference on Lung Cancer, researchers outlined some of the latest developments in ADCs targeting the antigens HER3, trophoblast cell-surface antigen 2 (TROP-2), and the B7-H3 immunoregulatory protein, as single agents or in combination with immunotherapy. Following the presentations, discussant Helena Linardou, MD, PhD, emphasized the need for pharmacogenomics to predict toxicity and studies to understand resistance mechanisms. “ADCs are a new, rapidly evolving class of therapeutics, and I think that we will all have to be prepared for the future that is coming,” said Dr. Linardou, who is director of the 4th oncology department and the Comprehensive Clinical Trials Center at Metropolitan Hospital in Athens.

Researchers presented four ADC clinical trial updates.
 

Patritumab deruxtecan

Patritumab deruxtecan (Daiichi Sankyo) links a HER3 antibody to the topoisomerase I inhibitor deruxtecan (HER3-DXd). In the open-label, phase 2 HERTHENA-Lung01 trial, it was tested in patients with NSCLC EGFR-activation mutations, which occurs in 14%-38% of NSCLC cases. There are few options for these patients following failure of EGFR tyrosine kinase inhibitor therapy.

The study included 225 patients previously treated with EGFR tyrosine kinase inhibitors and platinum-based chemotherapy who received 5.6 mg/kg of HER3-DXd every 3 weeks. Over a median follow-up of 13.1 months and a median treatment duration of 5.5 months), 29.8% had a confirmed overall response (95% confidence interval, 23.9%-36.2%) with a median duration of 6.4 months (95% CI, 4.9-7.8). The median progression-free survival was 5.5 months (95% CI, 5.1-5.9), and the median OS was 11.9 months (95% CI, 11.2-13.1). The researchers noted similar outcomes among patients with different mechanisms of EGFR TKI resistance. The frequency of adverse events was similar to previous studies, with drug-related adverse events linked to treatment discontinuation of 7.1% interstitial lung disease in 5.3%. Among 30 patients with brain metastases, the confirmed intracranial response rate was 33.3% (95% CI, 17.3%-52.8%).

The study was published simultaneously online in the Journal of Clinical Oncology. (Abstract)
 

Datopotamab deruxtecan

PD-1/PD-L1 inhibitors are the first-line therapy for metastatic NSCLC, but there are efforts to improve outcomes through combination therapy. Datopotamab deruxtecan (Dato-DXd, Daiichi Sankyo, AstraZeneca) is an ADC targeting TROP2, and it has been shown in preclinical studies to enhance tumor responses to PD-1/PD-L1 inhibitors. The ADC improved progression-free survival (PFS), compared with docetaxel, in previously treated advanced or metastatic NSCLC.

In an interim analysis of the phase 1b TROPION-Lung04 study, researchers reported results from the combination of Dato-DXd with durvalumab with or without carboplatin. The study included 38 patients, some of whom had previously undergone treatment with immune checkpoint inhibitors. Nineteen patients received the doublet, and 14 received the carboplatin triplet. Grade 3 or higher treatment-emergent adverse events occurred in 42.1% of the doublet group and 71.4% of the triplet group. Interstitial lung disease occurred in 15.8% and 7.1% of the two groups, respectively. The objective response rate was 50.0% in the doublet group and 76.9% in the triplet group. The disease control rate was 92.9% and 92.3%, respectively. Durable responses occurred in both the first-line setting and the overall population. (Abstract)
 

Sacituzumab govitecan

Another ADC being tested with PD-1/PD-L1 inhibitors is sacituzumab govitecan (Trodelvy, Gilead), which has already received FDA approval for metastatic triple-negative breast cancer, pretreated HR+/HER2- metastatic breast cancer, and metastatic urothelial cancer. Like datopotamab, sacituzumab targets TROP-2. Researchers reported preliminary results from the phase 2 EVOKE-02 study, in which the ADC was combined with pembrolizumab for the first-line treatment of metastatic NSCLC. The overall response rate was 56% (95% CI, 42%-69%). Among patients with PD-L1 tumor proportion score (TPS) ≥ 50%, the ORR was 69% (95% CI, 49%-85%) and 44% (95% CI, 26%-62%) among those with TPS < 50%. The disease control rate was 86% (95% CI, 68%-96%) and 78% (95% CI, 60%-91%), respectively. The most frequent treatment-emergent adverse events (TEAEs) were diarrhea, anemia, and asthenia, and 18% of patients discontinued the study drug because of TEAEs. (Abstract)

Ifinatamab deruxtecan

Ifinatamab deruxtecan (Daiichi Sankyo) targets the B7-H3 antigen, which is an immunoregulatory protein that is overexpressed in many tumors. In the DS7300-A-J101 study, it was tested in patients with advanced or metastatic solid tumors, without selection for B7-H3 expression. A subgroup analysis of 22 patients with small cell lung cancer (SCLC) showed an ORR of 52.4 (95% CI, 29.8-74.3), a complete response of 4.8%, and a partial response in 47.6%. The median PFS was 5.6 months (95% CI, 3.9-8.1) and median OS was 12.2 months (95% CI, 6.4-not applicable). The most common treatment-emergent adverse events were nausea (59.1%), fatigue (50.0%), anemia (27.3%), vomiting (27.3%), and decreased appetite (22.7%). (Abstract)

Antibody-drug conjugates (ADC) link a tumor-targeted antibody to a cytotoxic drug through a chemical linker and hold the promise of high potency. This has led to a burgeoning interest in solid tumors, with over 100 clinical trials in progress. Non–small cell lung cancer (NSCLC) is no exception. In 2022, the Food and Drug Administration approved trastuzumab DXd for pretreated NSCLC patients with HER2-mutant tumors. Two others have lung cancer breakthrough therapy designations from the FDA, including patritumab deruxtecan (HER3-DXd) for EGFR-mutant NSCLC and telisotuzumab vedotin for NSCLC that overexpresses c-Met.

At the annual World Conference on Lung Cancer, researchers outlined some of the latest developments in ADCs targeting the antigens HER3, trophoblast cell-surface antigen 2 (TROP-2), and the B7-H3 immunoregulatory protein, as single agents or in combination with immunotherapy. Following the presentations, discussant Helena Linardou, MD, PhD, emphasized the need for pharmacogenomics to predict toxicity and studies to understand resistance mechanisms. “ADCs are a new, rapidly evolving class of therapeutics, and I think that we will all have to be prepared for the future that is coming,” said Dr. Linardou, who is director of the 4th oncology department and the Comprehensive Clinical Trials Center at Metropolitan Hospital in Athens.

Researchers presented four ADC clinical trial updates.
 

Patritumab deruxtecan

Patritumab deruxtecan (Daiichi Sankyo) links a HER3 antibody to the topoisomerase I inhibitor deruxtecan (HER3-DXd). In the open-label, phase 2 HERTHENA-Lung01 trial, it was tested in patients with NSCLC EGFR-activation mutations, which occurs in 14%-38% of NSCLC cases. There are few options for these patients following failure of EGFR tyrosine kinase inhibitor therapy.

The study included 225 patients previously treated with EGFR tyrosine kinase inhibitors and platinum-based chemotherapy who received 5.6 mg/kg of HER3-DXd every 3 weeks. Over a median follow-up of 13.1 months and a median treatment duration of 5.5 months), 29.8% had a confirmed overall response (95% confidence interval, 23.9%-36.2%) with a median duration of 6.4 months (95% CI, 4.9-7.8). The median progression-free survival was 5.5 months (95% CI, 5.1-5.9), and the median OS was 11.9 months (95% CI, 11.2-13.1). The researchers noted similar outcomes among patients with different mechanisms of EGFR TKI resistance. The frequency of adverse events was similar to previous studies, with drug-related adverse events linked to treatment discontinuation of 7.1% interstitial lung disease in 5.3%. Among 30 patients with brain metastases, the confirmed intracranial response rate was 33.3% (95% CI, 17.3%-52.8%).

The study was published simultaneously online in the Journal of Clinical Oncology. (Abstract)
 

Datopotamab deruxtecan

PD-1/PD-L1 inhibitors are the first-line therapy for metastatic NSCLC, but there are efforts to improve outcomes through combination therapy. Datopotamab deruxtecan (Dato-DXd, Daiichi Sankyo, AstraZeneca) is an ADC targeting TROP2, and it has been shown in preclinical studies to enhance tumor responses to PD-1/PD-L1 inhibitors. The ADC improved progression-free survival (PFS), compared with docetaxel, in previously treated advanced or metastatic NSCLC.

In an interim analysis of the phase 1b TROPION-Lung04 study, researchers reported results from the combination of Dato-DXd with durvalumab with or without carboplatin. The study included 38 patients, some of whom had previously undergone treatment with immune checkpoint inhibitors. Nineteen patients received the doublet, and 14 received the carboplatin triplet. Grade 3 or higher treatment-emergent adverse events occurred in 42.1% of the doublet group and 71.4% of the triplet group. Interstitial lung disease occurred in 15.8% and 7.1% of the two groups, respectively. The objective response rate was 50.0% in the doublet group and 76.9% in the triplet group. The disease control rate was 92.9% and 92.3%, respectively. Durable responses occurred in both the first-line setting and the overall population. (Abstract)
 

Sacituzumab govitecan

Another ADC being tested with PD-1/PD-L1 inhibitors is sacituzumab govitecan (Trodelvy, Gilead), which has already received FDA approval for metastatic triple-negative breast cancer, pretreated HR+/HER2- metastatic breast cancer, and metastatic urothelial cancer. Like datopotamab, sacituzumab targets TROP-2. Researchers reported preliminary results from the phase 2 EVOKE-02 study, in which the ADC was combined with pembrolizumab for the first-line treatment of metastatic NSCLC. The overall response rate was 56% (95% CI, 42%-69%). Among patients with PD-L1 tumor proportion score (TPS) ≥ 50%, the ORR was 69% (95% CI, 49%-85%) and 44% (95% CI, 26%-62%) among those with TPS < 50%. The disease control rate was 86% (95% CI, 68%-96%) and 78% (95% CI, 60%-91%), respectively. The most frequent treatment-emergent adverse events (TEAEs) were diarrhea, anemia, and asthenia, and 18% of patients discontinued the study drug because of TEAEs. (Abstract)

Ifinatamab deruxtecan

Ifinatamab deruxtecan (Daiichi Sankyo) targets the B7-H3 antigen, which is an immunoregulatory protein that is overexpressed in many tumors. In the DS7300-A-J101 study, it was tested in patients with advanced or metastatic solid tumors, without selection for B7-H3 expression. A subgroup analysis of 22 patients with small cell lung cancer (SCLC) showed an ORR of 52.4 (95% CI, 29.8-74.3), a complete response of 4.8%, and a partial response in 47.6%. The median PFS was 5.6 months (95% CI, 3.9-8.1) and median OS was 12.2 months (95% CI, 6.4-not applicable). The most common treatment-emergent adverse events were nausea (59.1%), fatigue (50.0%), anemia (27.3%), vomiting (27.3%), and decreased appetite (22.7%). (Abstract)

TOPLINE:

Implementing a post-surgery protocol that has undergone incremental changes over time significantly reduced inpatient and discharge opioid volumes while maintaining pain control after pancreatic cancer surgery.
 

METHODOLOGY:

• To reduce opioid dependence, misuse, and diversion, Centers for Disease Control and Prevention guidelines emphasize strategies to minimize opioid prescribing for managing pain. Still, opioid prescribing following surgery remains common practice.
• In the current study, a team of researchers implemented a recovery care pathway to reduce opioid use among 832 patients undergoing pancreatic resection at a comprehensive cancer center.
• The study evaluated three sequential protocols implemented over a period of about 6 years, from 2016 to 2022.
• In the final version, a standardized three-drug nonopioid bundle (acetaminophen, celecoxib, and methocarbamol) was initiated intravenously in the recovery room, after which the patient was given oral agents on postoperative day 1.
• The primary outcome measure was inpatient and discharge opioid volume in oral morphine equivalents (OMEs) across the three pathways.

TAKEAWAY:

• Opioid use significantly decreased with each sequential pathway refinement.
• For inpatients, total OME decreased by more than 55% across the pathways from a median of 290 mg to 184 mg and finally to 129 mg (P < .001).
• Median discharge OME dropped from 150 mg to 25 mg and then to 0 mg across the pathways (P < .001).
• With the final version of the pathway, more than half of patients (52.5%) had opioid-free discharges, compared with only 7.2% in the first pathway. Pain scores remained stable at 3 or less; the number of postdischarge refill requests was unchanged.

IN PRACTICE:

“Our findings suggest that reduction of postoperative opioid dissemination through opioid-free discharge after pancreatectomy and other major cancer operations may be realistic and feasible by following this no-cost blueprint,” the authors concluded. In an accompanying editorial, Melissa Hogg, MD, from NorthShore University Health System in Evanston, Ill., said the “study inspired me to update our institution’s [early recovery after surgery] protocol to reduce and eliminate opioid prescriptions.”
 

SOURCE:

The study was led by Ching-Wei D. Tzeng, MD, of the University of Texas MD Anderson Cancer Center, Houston. It was published online in JAMA Surgery.
 

LIMITATIONS:

The study evaluated the opioid protocol at a single center, which may limit the generalizability of the findings. The researchers did not receive patient feedback on pain control expectations or postoperative quality of life.
 

DISCLOSURES:

Dr. Tzeng reported receiving consultant fees and a sponsored research agreement from PanTher outside the submitted work. Dr. Hogg reported receiving training and travel funds from Intuitive Money. No other disclosures or outside funding were reported.

A version of this article appeared on Medscape.com.

TOPLINE:

Implementing a post-surgery protocol that has undergone incremental changes over time significantly reduced inpatient and discharge opioid volumes while maintaining pain control after pancreatic cancer surgery.
 

METHODOLOGY:

• To reduce opioid dependence, misuse, and diversion, Centers for Disease Control and Prevention guidelines emphasize strategies to minimize opioid prescribing for managing pain. Still, opioid prescribing following surgery remains common practice.
• In the current study, a team of researchers implemented a recovery care pathway to reduce opioid use among 832 patients undergoing pancreatic resection at a comprehensive cancer center.
• The study evaluated three sequential protocols implemented over a period of about 6 years, from 2016 to 2022.
• In the final version, a standardized three-drug nonopioid bundle (acetaminophen, celecoxib, and methocarbamol) was initiated intravenously in the recovery room, after which the patient was given oral agents on postoperative day 1.
• The primary outcome measure was inpatient and discharge opioid volume in oral morphine equivalents (OMEs) across the three pathways.

TAKEAWAY:

• Opioid use significantly decreased with each sequential pathway refinement.
• For inpatients, total OME decreased by more than 55% across the pathways from a median of 290 mg to 184 mg and finally to 129 mg (P < .001).
• Median discharge OME dropped from 150 mg to 25 mg and then to 0 mg across the pathways (P < .001).
• With the final version of the pathway, more than half of patients (52.5%) had opioid-free discharges, compared with only 7.2% in the first pathway. Pain scores remained stable at 3 or less; the number of postdischarge refill requests was unchanged.

IN PRACTICE:

“Our findings suggest that reduction of postoperative opioid dissemination through opioid-free discharge after pancreatectomy and other major cancer operations may be realistic and feasible by following this no-cost blueprint,” the authors concluded. In an accompanying editorial, Melissa Hogg, MD, from NorthShore University Health System in Evanston, Ill., said the “study inspired me to update our institution’s [early recovery after surgery] protocol to reduce and eliminate opioid prescriptions.”
 

SOURCE:

The study was led by Ching-Wei D. Tzeng, MD, of the University of Texas MD Anderson Cancer Center, Houston. It was published online in JAMA Surgery.
 

LIMITATIONS:

The study evaluated the opioid protocol at a single center, which may limit the generalizability of the findings. The researchers did not receive patient feedback on pain control expectations or postoperative quality of life.
 

DISCLOSURES:

Dr. Tzeng reported receiving consultant fees and a sponsored research agreement from PanTher outside the submitted work. Dr. Hogg reported receiving training and travel funds from Intuitive Money. No other disclosures or outside funding were reported.

A version of this article appeared on Medscape.com.

TOPLINE:

Implementing a post-surgery protocol that has undergone incremental changes over time significantly reduced inpatient and discharge opioid volumes while maintaining pain control after pancreatic cancer surgery.
 

METHODOLOGY:

• To reduce opioid dependence, misuse, and diversion, Centers for Disease Control and Prevention guidelines emphasize strategies to minimize opioid prescribing for managing pain. Still, opioid prescribing following surgery remains common practice.
• In the current study, a team of researchers implemented a recovery care pathway to reduce opioid use among 832 patients undergoing pancreatic resection at a comprehensive cancer center.
• The study evaluated three sequential protocols implemented over a period of about 6 years, from 2016 to 2022.
• In the final version, a standardized three-drug nonopioid bundle (acetaminophen, celecoxib, and methocarbamol) was initiated intravenously in the recovery room, after which the patient was given oral agents on postoperative day 1.
• The primary outcome measure was inpatient and discharge opioid volume in oral morphine equivalents (OMEs) across the three pathways.

TAKEAWAY:

• Opioid use significantly decreased with each sequential pathway refinement.
• For inpatients, total OME decreased by more than 55% across the pathways from a median of 290 mg to 184 mg and finally to 129 mg (P < .001).
• Median discharge OME dropped from 150 mg to 25 mg and then to 0 mg across the pathways (P < .001).
• With the final version of the pathway, more than half of patients (52.5%) had opioid-free discharges, compared with only 7.2% in the first pathway. Pain scores remained stable at 3 or less; the number of postdischarge refill requests was unchanged.

IN PRACTICE:

“Our findings suggest that reduction of postoperative opioid dissemination through opioid-free discharge after pancreatectomy and other major cancer operations may be realistic and feasible by following this no-cost blueprint,” the authors concluded. In an accompanying editorial, Melissa Hogg, MD, from NorthShore University Health System in Evanston, Ill., said the “study inspired me to update our institution’s [early recovery after surgery] protocol to reduce and eliminate opioid prescriptions.”
 

SOURCE:

The study was led by Ching-Wei D. Tzeng, MD, of the University of Texas MD Anderson Cancer Center, Houston. It was published online in JAMA Surgery.
 

LIMITATIONS:

The study evaluated the opioid protocol at a single center, which may limit the generalizability of the findings. The researchers did not receive patient feedback on pain control expectations or postoperative quality of life.
 

DISCLOSURES:

Dr. Tzeng reported receiving consultant fees and a sponsored research agreement from PanTher outside the submitted work. Dr. Hogg reported receiving training and travel funds from Intuitive Money. No other disclosures or outside funding were reported.

A version of this article appeared on Medscape.com.

SINGAPORE – Heavily pretreated patients with EGFR-mutated non–small cell lung cancer (NSCLC) may experience a clinically meaningful benefit with the antibody-drug conjugate (ADC) patritumab deruxtecan (HER3-DXd), new phase 2 trial results suggest.

In the trial, almost 30% of patients receiving HER3-DXd achieved an objective response, and patients’ median overall survival approached 1 year.

HER3-DXd has “emerged as a promising therapy” in this patient population, “for whom available treatment options provide only limited efficacy,” concluded lead study author Helena A. Yu, MD, from Memorial Sloan Kettering Cancer Center, New York City, who presented findings from the HERTHENA-Lung01 trial at the 2023 World Conference on Lung Cancer.

The results were simultaneously published in the Journal of Clinical Oncology.

Acquired resistance to therapy among heavily pretreated patients with EGFR-mutated NSCLC is “universal,” Dr. Yu explained. The mechanisms of resistance to first-line osimertinib are also “diverse” and hard to identify. Salvage therapies after failed EGFR tyrosine kinase inhibitor (TKI) therapy and platinum-based chemotherapy offer “only a limited and transient and clinical benefit,” she said.

And with limited treatment options available to patients resistant to TKIs, there is a “high unmet medical need” for new therapies, said Helena Linardou, MD, PhD, who was not involved in the study.

HER3-DXd consists of a fully human anti-HER3 immunoglobulin G1 monoclonal antibody (patritumab) attached to a topoisomerase I inhibitor payload (DXd) via a tetrapeptide-based cleavable linker.

HER3, Dr. Linardou explained, is a “biologically and clinically important target” in NSCLC. It is highly expressed in NSCLC, upregulated in TKI-resistant EGFR-mutated NSCLC, and is associated with a poor prognosis.

After promising phase 1 data, Dr. Yu and colleagues conducted a phase 2 trial in patients with advanced EGFR-mutated NSCLC who had progressed on systematic therapy and had received EGFR TKI and platinum-based chemotherapy. Patients could have active or previously treated asymptomatic brain metastases.

Patients were initially randomized either to a fixed-dose arm of HER3-DXd 5.6 mg/kg once every 3 weeks or an uptitration arm with doses escalating from 3.2 mg/kg to 4.8 mg/kg to 6.4 mg/kg over three cycles. However, Dr. Yu noted, enrollment in the uptitration arm closed early based on a “benefit-risk assessment.”

The current findings focus on the 225 patients in the fixed-dose arm.

About half of patients had a history of central nervous system metastasis, and patients had a median of three prior lines of systemic therapy. Most patients (92.9%) had previously received a third-generation EGFR TKI, about 40% had received immunotherapy, and all had received platinum-based chemotherapy.

After a median follow-up of 18.9 months, the confirmed objective response rate with HER3-DXd across the whole patient population was 29.8%. The median duration of response was 6.4 months, median progression-free survival was 5.5 months, and median overall survival was 11.9 months.

The results were virtually identical when looking only at patients who had received a third-generation EGFR TKI versus any EGFR TKI. Response rates were also similar regardless of the driver of EGFR TKI resistance.

Among the 30 patients with measurable brain metastases at baseline, 33.3% had a confirmed objective response to therapy. In this group, the disease control rate was 76.7% and the intracranial duration of response was 8.4 months.

To identify biomarkers of response to HER3-DXd, the team stratified the patients by baseline tumor HER3 membrane H-scores. Dr. Yu and colleagues found no differences in the likelihood of having a complete or partial response, stable disease, or progressive disease based on HER3 expression at study entry.

Looking at the safety of the ADC, only 7.1% of patients experienced a treatment-emergent adverse event associated with treatment discontinuation, but close to half of patients (45.3%) experienced a grade 3 or higher treatment-emergent adverse event. Interstitial lung disease, for instance, occurred in 5.3% of patients, including one patient who died.

The safety profile of HER3-DXd in this population appeared to be consistent with previous reports, Dr. Yu noted.

Overall, the findings suggest that “HER3-DXd provided clinically meaningful and durable efficacy” in patients with advanced EGFR-mutant NSCLC that has progressed after EGFR TKI and platinum-based chemotherapy, Dr. Yu said.

“Efficacy was observed across diverse mechanisms of resistance and across a broad range of pretreatment tumor HER3 expression” and the ADC demonstrated “clinically meaningful intracranial antitumor activity,” she added.

Dr. Linardou agreed that the current results suggest that HER3-DXd was associated with a “meaningful and durable efficacy,” including in patients with intracranial metastases, and she pointed to its “easy dosing schedule” and activity across patient subgroups.

However, she noted that, despite the researchers’ best efforts with the data available, “we don’t have a biomarker of activity,” which is a “general issue with ADCs.”

Still, Dr. Linardou said, “HER3 is now a clinically actionable therapeutic target, and this is a great bonus.”

The study was sponsored by Daiichi Sankyo. Dr. Yu declared relationships with AstraZeneca, Daiichi Sankyo, Blueprint Medicines, Janssen, C4 Therapeutics, Cullinan Oncology, Black Diamond Therapeutics, Taiho Oncology, and others. Other authors declare numerous relationships.

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

SINGAPORE – Heavily pretreated patients with EGFR-mutated non–small cell lung cancer (NSCLC) may experience a clinically meaningful benefit with the antibody-drug conjugate (ADC) patritumab deruxtecan (HER3-DXd), new phase 2 trial results suggest.

In the trial, almost 30% of patients receiving HER3-DXd achieved an objective response, and patients’ median overall survival approached 1 year.

HER3-DXd has “emerged as a promising therapy” in this patient population, “for whom available treatment options provide only limited efficacy,” concluded lead study author Helena A. Yu, MD, from Memorial Sloan Kettering Cancer Center, New York City, who presented findings from the HERTHENA-Lung01 trial at the 2023 World Conference on Lung Cancer.

The results were simultaneously published in the Journal of Clinical Oncology.

Acquired resistance to therapy among heavily pretreated patients with EGFR-mutated NSCLC is “universal,” Dr. Yu explained. The mechanisms of resistance to first-line osimertinib are also “diverse” and hard to identify. Salvage therapies after failed EGFR tyrosine kinase inhibitor (TKI) therapy and platinum-based chemotherapy offer “only a limited and transient and clinical benefit,” she said.

And with limited treatment options available to patients resistant to TKIs, there is a “high unmet medical need” for new therapies, said Helena Linardou, MD, PhD, who was not involved in the study.

HER3-DXd consists of a fully human anti-HER3 immunoglobulin G1 monoclonal antibody (patritumab) attached to a topoisomerase I inhibitor payload (DXd) via a tetrapeptide-based cleavable linker.

HER3, Dr. Linardou explained, is a “biologically and clinically important target” in NSCLC. It is highly expressed in NSCLC, upregulated in TKI-resistant EGFR-mutated NSCLC, and is associated with a poor prognosis.

After promising phase 1 data, Dr. Yu and colleagues conducted a phase 2 trial in patients with advanced EGFR-mutated NSCLC who had progressed on systematic therapy and had received EGFR TKI and platinum-based chemotherapy. Patients could have active or previously treated asymptomatic brain metastases.

Patients were initially randomized either to a fixed-dose arm of HER3-DXd 5.6 mg/kg once every 3 weeks or an uptitration arm with doses escalating from 3.2 mg/kg to 4.8 mg/kg to 6.4 mg/kg over three cycles. However, Dr. Yu noted, enrollment in the uptitration arm closed early based on a “benefit-risk assessment.”

The current findings focus on the 225 patients in the fixed-dose arm.

About half of patients had a history of central nervous system metastasis, and patients had a median of three prior lines of systemic therapy. Most patients (92.9%) had previously received a third-generation EGFR TKI, about 40% had received immunotherapy, and all had received platinum-based chemotherapy.

After a median follow-up of 18.9 months, the confirmed objective response rate with HER3-DXd across the whole patient population was 29.8%. The median duration of response was 6.4 months, median progression-free survival was 5.5 months, and median overall survival was 11.9 months.

The results were virtually identical when looking only at patients who had received a third-generation EGFR TKI versus any EGFR TKI. Response rates were also similar regardless of the driver of EGFR TKI resistance.

Among the 30 patients with measurable brain metastases at baseline, 33.3% had a confirmed objective response to therapy. In this group, the disease control rate was 76.7% and the intracranial duration of response was 8.4 months.

To identify biomarkers of response to HER3-DXd, the team stratified the patients by baseline tumor HER3 membrane H-scores. Dr. Yu and colleagues found no differences in the likelihood of having a complete or partial response, stable disease, or progressive disease based on HER3 expression at study entry.

Looking at the safety of the ADC, only 7.1% of patients experienced a treatment-emergent adverse event associated with treatment discontinuation, but close to half of patients (45.3%) experienced a grade 3 or higher treatment-emergent adverse event. Interstitial lung disease, for instance, occurred in 5.3% of patients, including one patient who died.

The safety profile of HER3-DXd in this population appeared to be consistent with previous reports, Dr. Yu noted.

Overall, the findings suggest that “HER3-DXd provided clinically meaningful and durable efficacy” in patients with advanced EGFR-mutant NSCLC that has progressed after EGFR TKI and platinum-based chemotherapy, Dr. Yu said.

“Efficacy was observed across diverse mechanisms of resistance and across a broad range of pretreatment tumor HER3 expression” and the ADC demonstrated “clinically meaningful intracranial antitumor activity,” she added.

Dr. Linardou agreed that the current results suggest that HER3-DXd was associated with a “meaningful and durable efficacy,” including in patients with intracranial metastases, and she pointed to its “easy dosing schedule” and activity across patient subgroups.

However, she noted that, despite the researchers’ best efforts with the data available, “we don’t have a biomarker of activity,” which is a “general issue with ADCs.”

Still, Dr. Linardou said, “HER3 is now a clinically actionable therapeutic target, and this is a great bonus.”

The study was sponsored by Daiichi Sankyo. Dr. Yu declared relationships with AstraZeneca, Daiichi Sankyo, Blueprint Medicines, Janssen, C4 Therapeutics, Cullinan Oncology, Black Diamond Therapeutics, Taiho Oncology, and others. Other authors declare numerous relationships.

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

SINGAPORE – Heavily pretreated patients with EGFR-mutated non–small cell lung cancer (NSCLC) may experience a clinically meaningful benefit with the antibody-drug conjugate (ADC) patritumab deruxtecan (HER3-DXd), new phase 2 trial results suggest.

In the trial, almost 30% of patients receiving HER3-DXd achieved an objective response, and patients’ median overall survival approached 1 year.

HER3-DXd has “emerged as a promising therapy” in this patient population, “for whom available treatment options provide only limited efficacy,” concluded lead study author Helena A. Yu, MD, from Memorial Sloan Kettering Cancer Center, New York City, who presented findings from the HERTHENA-Lung01 trial at the 2023 World Conference on Lung Cancer.

The results were simultaneously published in the Journal of Clinical Oncology.

Acquired resistance to therapy among heavily pretreated patients with EGFR-mutated NSCLC is “universal,” Dr. Yu explained. The mechanisms of resistance to first-line osimertinib are also “diverse” and hard to identify. Salvage therapies after failed EGFR tyrosine kinase inhibitor (TKI) therapy and platinum-based chemotherapy offer “only a limited and transient and clinical benefit,” she said.

And with limited treatment options available to patients resistant to TKIs, there is a “high unmet medical need” for new therapies, said Helena Linardou, MD, PhD, who was not involved in the study.

HER3-DXd consists of a fully human anti-HER3 immunoglobulin G1 monoclonal antibody (patritumab) attached to a topoisomerase I inhibitor payload (DXd) via a tetrapeptide-based cleavable linker.

HER3, Dr. Linardou explained, is a “biologically and clinically important target” in NSCLC. It is highly expressed in NSCLC, upregulated in TKI-resistant EGFR-mutated NSCLC, and is associated with a poor prognosis.

After promising phase 1 data, Dr. Yu and colleagues conducted a phase 2 trial in patients with advanced EGFR-mutated NSCLC who had progressed on systematic therapy and had received EGFR TKI and platinum-based chemotherapy. Patients could have active or previously treated asymptomatic brain metastases.

Patients were initially randomized either to a fixed-dose arm of HER3-DXd 5.6 mg/kg once every 3 weeks or an uptitration arm with doses escalating from 3.2 mg/kg to 4.8 mg/kg to 6.4 mg/kg over three cycles. However, Dr. Yu noted, enrollment in the uptitration arm closed early based on a “benefit-risk assessment.”

The current findings focus on the 225 patients in the fixed-dose arm.

About half of patients had a history of central nervous system metastasis, and patients had a median of three prior lines of systemic therapy. Most patients (92.9%) had previously received a third-generation EGFR TKI, about 40% had received immunotherapy, and all had received platinum-based chemotherapy.

After a median follow-up of 18.9 months, the confirmed objective response rate with HER3-DXd across the whole patient population was 29.8%. The median duration of response was 6.4 months, median progression-free survival was 5.5 months, and median overall survival was 11.9 months.

The results were virtually identical when looking only at patients who had received a third-generation EGFR TKI versus any EGFR TKI. Response rates were also similar regardless of the driver of EGFR TKI resistance.

Among the 30 patients with measurable brain metastases at baseline, 33.3% had a confirmed objective response to therapy. In this group, the disease control rate was 76.7% and the intracranial duration of response was 8.4 months.

To identify biomarkers of response to HER3-DXd, the team stratified the patients by baseline tumor HER3 membrane H-scores. Dr. Yu and colleagues found no differences in the likelihood of having a complete or partial response, stable disease, or progressive disease based on HER3 expression at study entry.

Looking at the safety of the ADC, only 7.1% of patients experienced a treatment-emergent adverse event associated with treatment discontinuation, but close to half of patients (45.3%) experienced a grade 3 or higher treatment-emergent adverse event. Interstitial lung disease, for instance, occurred in 5.3% of patients, including one patient who died.

The safety profile of HER3-DXd in this population appeared to be consistent with previous reports, Dr. Yu noted.

Overall, the findings suggest that “HER3-DXd provided clinically meaningful and durable efficacy” in patients with advanced EGFR-mutant NSCLC that has progressed after EGFR TKI and platinum-based chemotherapy, Dr. Yu said.

“Efficacy was observed across diverse mechanisms of resistance and across a broad range of pretreatment tumor HER3 expression” and the ADC demonstrated “clinically meaningful intracranial antitumor activity,” she added.

Dr. Linardou agreed that the current results suggest that HER3-DXd was associated with a “meaningful and durable efficacy,” including in patients with intracranial metastases, and she pointed to its “easy dosing schedule” and activity across patient subgroups.

However, she noted that, despite the researchers’ best efforts with the data available, “we don’t have a biomarker of activity,” which is a “general issue with ADCs.”

Still, Dr. Linardou said, “HER3 is now a clinically actionable therapeutic target, and this is a great bonus.”

The study was sponsored by Daiichi Sankyo. Dr. Yu declared relationships with AstraZeneca, Daiichi Sankyo, Blueprint Medicines, Janssen, C4 Therapeutics, Cullinan Oncology, Black Diamond Therapeutics, Taiho Oncology, and others. Other authors declare numerous relationships.

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

COVID vaccines will have a new formulation in 2023, according to a decision announced by the U.S. Food and Drug Administration, that will focus efforts on circulating variants. The move pushes last year’s bivalent vaccines out of circulation because they will no longer be authorized for use in the United States.

The updated mRNA vaccines for 2023-2024 are being revised to include a single component that corresponds to the Omicron variant XBB.1.5. Like the bivalents offered before, the new monovalents are being manufactured by Moderna and Pfizer.

The new vaccines are authorized for use in individuals age 6 months and older.  And the new options are being developed using a similar process as previous formulations, according to the FDA.
 

Targeting circulating variants

In recent studies, regulators point out the extent of neutralization observed by the updated vaccines against currently circulating viral variants causing COVID-19, including EG.5, BA.2.86, appears to be of a similar magnitude to the extent of neutralization observed with previous versions of the vaccines against corresponding prior variants.

“This suggests that the vaccines are a good match for protecting against the currently circulating COVID-19 variants,” according to the report.

Hundreds of millions of people in the United States have already received previously approved mRNA COVID vaccines, according to regulators who say the benefit-to-risk profile is well understood as they move forward with new formulations.

“Vaccination remains critical to public health and continued protection against serious consequences of COVID-19, including hospitalization and death,” Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research, said in a statement. “The public can be assured that these updated vaccines have met the agency’s rigorous scientific standards for safety, effectiveness, and manufacturing quality. We very much encourage those who are eligible to consider getting vaccinated.”
 

Timing the effort

On Sept. 12 the U.S. Centers for Disease Control and Prevention recommended that everyone 6 months and older get an updated COVID-19 vaccine. Updated vaccines from Pfizer-BioNTech and Moderna will be available later this week, according to the agency.

This article was updated 9/14/23.

A version of this article appeared on Medscape.com.

COVID vaccines will have a new formulation in 2023, according to a decision announced by the U.S. Food and Drug Administration, that will focus efforts on circulating variants. The move pushes last year’s bivalent vaccines out of circulation because they will no longer be authorized for use in the United States.

The updated mRNA vaccines for 2023-2024 are being revised to include a single component that corresponds to the Omicron variant XBB.1.5. Like the bivalents offered before, the new monovalents are being manufactured by Moderna and Pfizer.

The new vaccines are authorized for use in individuals age 6 months and older.  And the new options are being developed using a similar process as previous formulations, according to the FDA.
 

Targeting circulating variants

In recent studies, regulators point out the extent of neutralization observed by the updated vaccines against currently circulating viral variants causing COVID-19, including EG.5, BA.2.86, appears to be of a similar magnitude to the extent of neutralization observed with previous versions of the vaccines against corresponding prior variants.

“This suggests that the vaccines are a good match for protecting against the currently circulating COVID-19 variants,” according to the report.

Hundreds of millions of people in the United States have already received previously approved mRNA COVID vaccines, according to regulators who say the benefit-to-risk profile is well understood as they move forward with new formulations.

“Vaccination remains critical to public health and continued protection against serious consequences of COVID-19, including hospitalization and death,” Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research, said in a statement. “The public can be assured that these updated vaccines have met the agency’s rigorous scientific standards for safety, effectiveness, and manufacturing quality. We very much encourage those who are eligible to consider getting vaccinated.”
 

Timing the effort

On Sept. 12 the U.S. Centers for Disease Control and Prevention recommended that everyone 6 months and older get an updated COVID-19 vaccine. Updated vaccines from Pfizer-BioNTech and Moderna will be available later this week, according to the agency.

This article was updated 9/14/23.

A version of this article appeared on Medscape.com.

COVID vaccines will have a new formulation in 2023, according to a decision announced by the U.S. Food and Drug Administration, that will focus efforts on circulating variants. The move pushes last year’s bivalent vaccines out of circulation because they will no longer be authorized for use in the United States.

The updated mRNA vaccines for 2023-2024 are being revised to include a single component that corresponds to the Omicron variant XBB.1.5. Like the bivalents offered before, the new monovalents are being manufactured by Moderna and Pfizer.

The new vaccines are authorized for use in individuals age 6 months and older.  And the new options are being developed using a similar process as previous formulations, according to the FDA.
 

Targeting circulating variants

In recent studies, regulators point out the extent of neutralization observed by the updated vaccines against currently circulating viral variants causing COVID-19, including EG.5, BA.2.86, appears to be of a similar magnitude to the extent of neutralization observed with previous versions of the vaccines against corresponding prior variants.

“This suggests that the vaccines are a good match for protecting against the currently circulating COVID-19 variants,” according to the report.

Hundreds of millions of people in the United States have already received previously approved mRNA COVID vaccines, according to regulators who say the benefit-to-risk profile is well understood as they move forward with new formulations.

“Vaccination remains critical to public health and continued protection against serious consequences of COVID-19, including hospitalization and death,” Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research, said in a statement. “The public can be assured that these updated vaccines have met the agency’s rigorous scientific standards for safety, effectiveness, and manufacturing quality. We very much encourage those who are eligible to consider getting vaccinated.”
 

Timing the effort

On Sept. 12 the U.S. Centers for Disease Control and Prevention recommended that everyone 6 months and older get an updated COVID-19 vaccine. Updated vaccines from Pfizer-BioNTech and Moderna will be available later this week, according to the agency.

This article was updated 9/14/23.

A version of this article appeared on Medscape.com.

The U.S. Food and Drug Administration has approved motixafortide (Aphexda, BioLineRx) in combination with filgrastim (G-CSF) to mobilize hematopoietic stem cells for collection and subsequent autologous transplantation in patients with multiple myeloma.

The success of autologous stem cell transplantation (ASCT) depends on adequate mobilization of stem cells during the treatment process. Collection of a sufficient number of stem cells to perform two transplantations is recommended. However, in up to 47% of patients, collecting target numbers of hematopoietic stem cells for ASCT after one apheresis session remains a challenge, BioLineRx explained in a press release today, announcing the approval.

The goal of combining motixafortide with filgrastim is to mobilize stem cells more reliably than filgrastim can alone, with fewer days of apheresis sessions and fewer doses of filgrastim.

“We believe [motixafortide] will play a critical role in addressing unmet needs and introduce a new treatment paradigm for” patients with multiple myeloma, CEO Philip Serlin said in the release.

The drug approval was based on the GENESIS trial, which randomized 122 patients to either motixafortide plus filgrastim or placebo plus filgrastim.

BioLineRx said the trial included patients considered representative of the typical multiple myeloma population undergoing ASCT, with a median age of 63 years and with about 70% of patients in both arms of the trial receiving lenalidomide-containing induction therapy.

Motixafortide plus filgrastim enabled 67.5% of patients to achieve the stem cell collection goal of 6 million or more CD34+ cells/kg within two apheresis sessions, versus 9.5% of patients receiving the placebo plus filgrastim regimen. Additionally, 92.5% of patients reached the stem cell collection goal in up to two apheresis sessions in the motixafortide arm and 21.4% in the placebo arm.

However, “the data are descriptive and were not statistically powered nor prespecified. The information should be cautiously interpreted,” the company said.

Serious adverse reactions occurred in 5.4% of patients in the motixafortide arm, including vomiting, injection-site reaction, hypersensitivity reaction, injection-site cellulitis, hypokalemia, and hypoxia. The most common adverse reactions, occurring in more than 20% of patients, were injection site reactions (pain, erythema, and pruritus), pruritus, flushing, and back pain.

Labeling for the subcutaneous injection is available online.

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

The U.S. Food and Drug Administration has approved motixafortide (Aphexda, BioLineRx) in combination with filgrastim (G-CSF) to mobilize hematopoietic stem cells for collection and subsequent autologous transplantation in patients with multiple myeloma.

The success of autologous stem cell transplantation (ASCT) depends on adequate mobilization of stem cells during the treatment process. Collection of a sufficient number of stem cells to perform two transplantations is recommended. However, in up to 47% of patients, collecting target numbers of hematopoietic stem cells for ASCT after one apheresis session remains a challenge, BioLineRx explained in a press release today, announcing the approval.

The goal of combining motixafortide with filgrastim is to mobilize stem cells more reliably than filgrastim can alone, with fewer days of apheresis sessions and fewer doses of filgrastim.

“We believe [motixafortide] will play a critical role in addressing unmet needs and introduce a new treatment paradigm for” patients with multiple myeloma, CEO Philip Serlin said in the release.

The drug approval was based on the GENESIS trial, which randomized 122 patients to either motixafortide plus filgrastim or placebo plus filgrastim.

BioLineRx said the trial included patients considered representative of the typical multiple myeloma population undergoing ASCT, with a median age of 63 years and with about 70% of patients in both arms of the trial receiving lenalidomide-containing induction therapy.

Motixafortide plus filgrastim enabled 67.5% of patients to achieve the stem cell collection goal of 6 million or more CD34+ cells/kg within two apheresis sessions, versus 9.5% of patients receiving the placebo plus filgrastim regimen. Additionally, 92.5% of patients reached the stem cell collection goal in up to two apheresis sessions in the motixafortide arm and 21.4% in the placebo arm.

However, “the data are descriptive and were not statistically powered nor prespecified. The information should be cautiously interpreted,” the company said.

Serious adverse reactions occurred in 5.4% of patients in the motixafortide arm, including vomiting, injection-site reaction, hypersensitivity reaction, injection-site cellulitis, hypokalemia, and hypoxia. The most common adverse reactions, occurring in more than 20% of patients, were injection site reactions (pain, erythema, and pruritus), pruritus, flushing, and back pain.

Labeling for the subcutaneous injection is available online.

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

The U.S. Food and Drug Administration has approved motixafortide (Aphexda, BioLineRx) in combination with filgrastim (G-CSF) to mobilize hematopoietic stem cells for collection and subsequent autologous transplantation in patients with multiple myeloma.

The success of autologous stem cell transplantation (ASCT) depends on adequate mobilization of stem cells during the treatment process. Collection of a sufficient number of stem cells to perform two transplantations is recommended. However, in up to 47% of patients, collecting target numbers of hematopoietic stem cells for ASCT after one apheresis session remains a challenge, BioLineRx explained in a press release today, announcing the approval.

The goal of combining motixafortide with filgrastim is to mobilize stem cells more reliably than filgrastim can alone, with fewer days of apheresis sessions and fewer doses of filgrastim.

“We believe [motixafortide] will play a critical role in addressing unmet needs and introduce a new treatment paradigm for” patients with multiple myeloma, CEO Philip Serlin said in the release.

The drug approval was based on the GENESIS trial, which randomized 122 patients to either motixafortide plus filgrastim or placebo plus filgrastim.

BioLineRx said the trial included patients considered representative of the typical multiple myeloma population undergoing ASCT, with a median age of 63 years and with about 70% of patients in both arms of the trial receiving lenalidomide-containing induction therapy.

Motixafortide plus filgrastim enabled 67.5% of patients to achieve the stem cell collection goal of 6 million or more CD34+ cells/kg within two apheresis sessions, versus 9.5% of patients receiving the placebo plus filgrastim regimen. Additionally, 92.5% of patients reached the stem cell collection goal in up to two apheresis sessions in the motixafortide arm and 21.4% in the placebo arm.

However, “the data are descriptive and were not statistically powered nor prespecified. The information should be cautiously interpreted,” the company said.

Serious adverse reactions occurred in 5.4% of patients in the motixafortide arm, including vomiting, injection-site reaction, hypersensitivity reaction, injection-site cellulitis, hypokalemia, and hypoxia. The most common adverse reactions, occurring in more than 20% of patients, were injection site reactions (pain, erythema, and pruritus), pruritus, flushing, and back pain.

Labeling for the subcutaneous injection is available online.

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