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Liraglutide effective against weight regain after gastric bypass
The glucagon-like peptide-1 (GLP-1) receptor agonist liraglutide (Saxenda, Novo Nordisk) was safe and effective for treating weight regain after Roux-en-Y gastric bypass (RYGB), in a randomized controlled trial.
That is, 132 patients who had lost at least 25% of their initial weight after RYGB and then gained at least 10% back were randomized 2:1 to receive liraglutide plus frequent lifestyle advice from a registered dietitian or lifestyle advice alone.
After a year, 69%, 48%, and 24% of patients who had received liraglutide lost at least 5%, 10%, and 15% of their study entry weight, respectively. In contrast, only 5% of patients in the control group lost at least 5% of their weight and none lost at least 10% of their weight.
“Liraglutide 3.0 mg/day, with lifestyle modification, was significantly more effective than placebo in treating weight regain after RYGB without increased risk of serious adverse events,” Holly F. Lofton, MD, summarized this week in an oral session at ObesityWeek®, the annual meeting of The Obesity Society.
Dr. Lofton, a clinical associate professor of surgery and medicine, and director, weight management program, NYU, Langone Health, explained to this news organization that she initiated the study after attending a “packed” session about post bariatric surgery weight regain at a prior American Society of Metabolic and Bariatric Surgery conference.
“The lecturers recommended conservative measures (such as reiterating the diet recommendations, exercise, [and] counseling), and revisional surgeries,” she said in an email, but at the time “there was no literature that provided direction on which pharmacotherapies are best for this population.”
It was known that decreases in endogenous GLP-1 levels coincide with weight regain, and liraglutide (Saxenda) was the only GLP-1 agonist approved for chronic weight management at the time, so she devised the current study protocol.
The findings are especially helpful for patients who are not candidates for bariatric surgery revisions, she noted. Further research is needed to investigate the effect of newer GLP-1 agonists, such as semaglutide (Wegovy), on weight regain following different types of bariatric surgery.
Asked to comment, Wendy C. King, PhD, who was not involved with this research, said that more than two-thirds of patients treated with 3 mg/day subcutaneous liraglutide injections in the current study lost at least 5% of their initial weight a year later, and 20% of them attained a weight as low as, or lower than, their lowest weight after bariatric surgery (nadir weight).
“The fact that both groups received lifestyle counseling from registered dietitians for just over a year, but only patients in the liraglutide group lost weight, on average, speaks to the difficulty of losing weight following weight regain post–bariatric surgery,” added Dr. King, an associate professor of epidemiology at the University of Pittsburgh, Pennsylvania.
This study “provides data that may help clinicians and patients understand the potential effect of adding liraglutide 3.0 mg/day to their weight loss efforts,” she told this news organization in an email.
However, “given that 42% of those on liraglutide reported gastrointestinal-related side effects, patients should also be counseled on this potential outcome and given suggestions for how to minimize such side effects,” Dr. King suggested.
Weight regain common, repeat surgery entails risk
Weight regain is common even years after bariatric surgery. Repeat surgery entails some risk, and lifestyle approaches alone are rarely successful in reversing weight regain, Dr. Lofton told the audience.
The researchers enrolled 132 adults who had a mean weight of 134 kg (295 pounds) when they underwent RYGB, and who lost at least 25% of their initial weight (mean weight loss of 38%) after the surgery, but who also regained at least 10% of their initial weight.
At enrollment of the current study (baseline), the patients had had RYGB 18 months to 10 years earlier (mean 5.7 years earlier) and now had a mean weight of 99 kg (218 pounds) and a mean BMI of 35.6 kg/m2. None of the patients had diabetes.
The patients were randomized to receive liraglutide (n = 89, 84% women) or placebo (n = 43, 88% women) for 56 weeks.
They were a mean age of 48 years, and about 59% were White and 25% were Black.
All patients had clinic visits every 3 months where they received lifestyle counseling from a registered dietitian.
At 12 months, patients in the liraglutide group had lost a mean of 8.8% of their baseline weight, whereas those in the placebo group had gained a mean of 1.48% of their baseline weight.
There were no significant between-group differences in cardiometabolic variables.
None of the patients in the control group attained a weight that was as low as their nadir weight after RYGB.
The rates of nausea (25%), constipation (16%), and abdominal pain (10%) in the liraglutide group were higher than in the placebo group (7%, 14%, and 5%, respectively) but similar to rates of gastrointestinal side effects in other trials of this agent.
Dr. Lofton has disclosed receiving consulting fees and being on a speaker bureau for Novo Nordisk and receiving research funds from Boehringer Ingelheim, Eli Lilly, and Novo Nordisk. Dr. King has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The glucagon-like peptide-1 (GLP-1) receptor agonist liraglutide (Saxenda, Novo Nordisk) was safe and effective for treating weight regain after Roux-en-Y gastric bypass (RYGB), in a randomized controlled trial.
That is, 132 patients who had lost at least 25% of their initial weight after RYGB and then gained at least 10% back were randomized 2:1 to receive liraglutide plus frequent lifestyle advice from a registered dietitian or lifestyle advice alone.
After a year, 69%, 48%, and 24% of patients who had received liraglutide lost at least 5%, 10%, and 15% of their study entry weight, respectively. In contrast, only 5% of patients in the control group lost at least 5% of their weight and none lost at least 10% of their weight.
“Liraglutide 3.0 mg/day, with lifestyle modification, was significantly more effective than placebo in treating weight regain after RYGB without increased risk of serious adverse events,” Holly F. Lofton, MD, summarized this week in an oral session at ObesityWeek®, the annual meeting of The Obesity Society.
Dr. Lofton, a clinical associate professor of surgery and medicine, and director, weight management program, NYU, Langone Health, explained to this news organization that she initiated the study after attending a “packed” session about post bariatric surgery weight regain at a prior American Society of Metabolic and Bariatric Surgery conference.
“The lecturers recommended conservative measures (such as reiterating the diet recommendations, exercise, [and] counseling), and revisional surgeries,” she said in an email, but at the time “there was no literature that provided direction on which pharmacotherapies are best for this population.”
It was known that decreases in endogenous GLP-1 levels coincide with weight regain, and liraglutide (Saxenda) was the only GLP-1 agonist approved for chronic weight management at the time, so she devised the current study protocol.
The findings are especially helpful for patients who are not candidates for bariatric surgery revisions, she noted. Further research is needed to investigate the effect of newer GLP-1 agonists, such as semaglutide (Wegovy), on weight regain following different types of bariatric surgery.
Asked to comment, Wendy C. King, PhD, who was not involved with this research, said that more than two-thirds of patients treated with 3 mg/day subcutaneous liraglutide injections in the current study lost at least 5% of their initial weight a year later, and 20% of them attained a weight as low as, or lower than, their lowest weight after bariatric surgery (nadir weight).
“The fact that both groups received lifestyle counseling from registered dietitians for just over a year, but only patients in the liraglutide group lost weight, on average, speaks to the difficulty of losing weight following weight regain post–bariatric surgery,” added Dr. King, an associate professor of epidemiology at the University of Pittsburgh, Pennsylvania.
This study “provides data that may help clinicians and patients understand the potential effect of adding liraglutide 3.0 mg/day to their weight loss efforts,” she told this news organization in an email.
However, “given that 42% of those on liraglutide reported gastrointestinal-related side effects, patients should also be counseled on this potential outcome and given suggestions for how to minimize such side effects,” Dr. King suggested.
Weight regain common, repeat surgery entails risk
Weight regain is common even years after bariatric surgery. Repeat surgery entails some risk, and lifestyle approaches alone are rarely successful in reversing weight regain, Dr. Lofton told the audience.
The researchers enrolled 132 adults who had a mean weight of 134 kg (295 pounds) when they underwent RYGB, and who lost at least 25% of their initial weight (mean weight loss of 38%) after the surgery, but who also regained at least 10% of their initial weight.
At enrollment of the current study (baseline), the patients had had RYGB 18 months to 10 years earlier (mean 5.7 years earlier) and now had a mean weight of 99 kg (218 pounds) and a mean BMI of 35.6 kg/m2. None of the patients had diabetes.
The patients were randomized to receive liraglutide (n = 89, 84% women) or placebo (n = 43, 88% women) for 56 weeks.
They were a mean age of 48 years, and about 59% were White and 25% were Black.
All patients had clinic visits every 3 months where they received lifestyle counseling from a registered dietitian.
At 12 months, patients in the liraglutide group had lost a mean of 8.8% of their baseline weight, whereas those in the placebo group had gained a mean of 1.48% of their baseline weight.
There were no significant between-group differences in cardiometabolic variables.
None of the patients in the control group attained a weight that was as low as their nadir weight after RYGB.
The rates of nausea (25%), constipation (16%), and abdominal pain (10%) in the liraglutide group were higher than in the placebo group (7%, 14%, and 5%, respectively) but similar to rates of gastrointestinal side effects in other trials of this agent.
Dr. Lofton has disclosed receiving consulting fees and being on a speaker bureau for Novo Nordisk and receiving research funds from Boehringer Ingelheim, Eli Lilly, and Novo Nordisk. Dr. King has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The glucagon-like peptide-1 (GLP-1) receptor agonist liraglutide (Saxenda, Novo Nordisk) was safe and effective for treating weight regain after Roux-en-Y gastric bypass (RYGB), in a randomized controlled trial.
That is, 132 patients who had lost at least 25% of their initial weight after RYGB and then gained at least 10% back were randomized 2:1 to receive liraglutide plus frequent lifestyle advice from a registered dietitian or lifestyle advice alone.
After a year, 69%, 48%, and 24% of patients who had received liraglutide lost at least 5%, 10%, and 15% of their study entry weight, respectively. In contrast, only 5% of patients in the control group lost at least 5% of their weight and none lost at least 10% of their weight.
“Liraglutide 3.0 mg/day, with lifestyle modification, was significantly more effective than placebo in treating weight regain after RYGB without increased risk of serious adverse events,” Holly F. Lofton, MD, summarized this week in an oral session at ObesityWeek®, the annual meeting of The Obesity Society.
Dr. Lofton, a clinical associate professor of surgery and medicine, and director, weight management program, NYU, Langone Health, explained to this news organization that she initiated the study after attending a “packed” session about post bariatric surgery weight regain at a prior American Society of Metabolic and Bariatric Surgery conference.
“The lecturers recommended conservative measures (such as reiterating the diet recommendations, exercise, [and] counseling), and revisional surgeries,” she said in an email, but at the time “there was no literature that provided direction on which pharmacotherapies are best for this population.”
It was known that decreases in endogenous GLP-1 levels coincide with weight regain, and liraglutide (Saxenda) was the only GLP-1 agonist approved for chronic weight management at the time, so she devised the current study protocol.
The findings are especially helpful for patients who are not candidates for bariatric surgery revisions, she noted. Further research is needed to investigate the effect of newer GLP-1 agonists, such as semaglutide (Wegovy), on weight regain following different types of bariatric surgery.
Asked to comment, Wendy C. King, PhD, who was not involved with this research, said that more than two-thirds of patients treated with 3 mg/day subcutaneous liraglutide injections in the current study lost at least 5% of their initial weight a year later, and 20% of them attained a weight as low as, or lower than, their lowest weight after bariatric surgery (nadir weight).
“The fact that both groups received lifestyle counseling from registered dietitians for just over a year, but only patients in the liraglutide group lost weight, on average, speaks to the difficulty of losing weight following weight regain post–bariatric surgery,” added Dr. King, an associate professor of epidemiology at the University of Pittsburgh, Pennsylvania.
This study “provides data that may help clinicians and patients understand the potential effect of adding liraglutide 3.0 mg/day to their weight loss efforts,” she told this news organization in an email.
However, “given that 42% of those on liraglutide reported gastrointestinal-related side effects, patients should also be counseled on this potential outcome and given suggestions for how to minimize such side effects,” Dr. King suggested.
Weight regain common, repeat surgery entails risk
Weight regain is common even years after bariatric surgery. Repeat surgery entails some risk, and lifestyle approaches alone are rarely successful in reversing weight regain, Dr. Lofton told the audience.
The researchers enrolled 132 adults who had a mean weight of 134 kg (295 pounds) when they underwent RYGB, and who lost at least 25% of their initial weight (mean weight loss of 38%) after the surgery, but who also regained at least 10% of their initial weight.
At enrollment of the current study (baseline), the patients had had RYGB 18 months to 10 years earlier (mean 5.7 years earlier) and now had a mean weight of 99 kg (218 pounds) and a mean BMI of 35.6 kg/m2. None of the patients had diabetes.
The patients were randomized to receive liraglutide (n = 89, 84% women) or placebo (n = 43, 88% women) for 56 weeks.
They were a mean age of 48 years, and about 59% were White and 25% were Black.
All patients had clinic visits every 3 months where they received lifestyle counseling from a registered dietitian.
At 12 months, patients in the liraglutide group had lost a mean of 8.8% of their baseline weight, whereas those in the placebo group had gained a mean of 1.48% of their baseline weight.
There were no significant between-group differences in cardiometabolic variables.
None of the patients in the control group attained a weight that was as low as their nadir weight after RYGB.
The rates of nausea (25%), constipation (16%), and abdominal pain (10%) in the liraglutide group were higher than in the placebo group (7%, 14%, and 5%, respectively) but similar to rates of gastrointestinal side effects in other trials of this agent.
Dr. Lofton has disclosed receiving consulting fees and being on a speaker bureau for Novo Nordisk and receiving research funds from Boehringer Ingelheim, Eli Lilly, and Novo Nordisk. Dr. King has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM OBESITY WEEK 2021
‘If obesity were diabetes or cancer, how would you approach it?’
“When considering the challenges of obesity, ask yourself: ‘If it were diabetes, cancer, HIV, or Alzheimer’s, how would you discuss it, approach it, assess it, treat it?’” Lee M. Kaplan, MD, PhD, asked the audience of health care professionals during ObesityWeek®, the annual meeting of The Obesity Society.
“And then do it for obesity, using the full spectrum of tools at our disposal,” he advised.
This was the takeaway that Dr. Kaplan, director of the Obesity, Metabolism, and Nutrition Institute at Massachusetts General Hospital and associate professor, Harvard Medical School, Boston, left the audience with at the end of his lecture entitled, “What does the future of obesity care look like?”
Invited to summarize his main points, Dr. Kaplan told this news organization in an interview that practitioners caring for patients with obesity need to first “recognize that obesity is a disease” caused by dysfunction of the metabolic system that regulates body fat – in the same way immune dysregulation can lead to asthma.
Second, “we are finally developing noninvasive therapies that are more effective,” he noted, referring to the recently approved semaglutide, and even more potent weight-loss therapies that could be on the market within 3 years, so that weight-loss outcomes with pharmacotherapy are approaching those with bariatric surgery.
Third, it is important that patients with obesity get “broad and equitable access” to treatment, and health care practitioners need to be on the same page and have a “shared understanding” of which treatments are appropriate for individual patients, “just as we do for other diseases.”
Need for a shared understanding
“Dr. Kaplan really brought home the idea that we all need a shared understanding of what obesity is – and what it is not,” agreed symposium moderator Donna H. Ryan, MD, in an email.
“He underscored the biologic basis of obesity,” noted Dr. Ryan, professor emerita at Pennington Biomedical Research Center in Baton Rouge, Louisiana, and associate editor-in-chief of Obesity, the official journal of The Obesity Society.
“It is a dysregulation of the body’s weight (especially adipose tissue) regulatory system,” she continued. “The body responds to powerful environmental pressures that produce excess energy balance, and we store that as fat and defend our highest fat mass. This makes obesity a disease, a chronic disease that requires a medical approach to reverse. It’s not a cosmetic problem, it’s a medical problem,” she emphasized.
There is so much misinformation out there about obesity, according to Dr. Ryan.
“People think it’s a lack of willpower, and even patients blame themselves for not being able to lose weight and keep it off. It’s not their fault! It’s biology.”
Although the supplement industry and fad diets falsely promise fast results, there is no magic diet, she continued.
“But we have made progress based on understanding the biologic basis of obesity and have new medications that offer real hope for patients.”
“With 42% of U.S. adults having a BMI that qualifies as obesity, we need a concerted and broad effort to address this problem, and that starts with everybody on the same page as to what obesity is ... a shared understanding of the biologic basis of obesity. It’s time to take obesity seriously,” she summarized, echoing Dr. Kaplan.
A question of biology
“Obesity results from inappropriate pathophysiological regulation of body fat mass,” when the body defends adiposity, Dr. Kaplan explained at the start of his lecture.
The treatment strategy for obesity has always been a stepwise approach starting with lifestyle changes, then pharmacotherapy, then possibly bariatric surgery – each step with a potentially greater chance of weight loss. But now, he explained, medicine is on the verge of having an armamentarium of more potent weight-loss medications.
Compared with phentermine/topiramate, orlistat, naltrexone/bupropion, and liraglutide – which roughly might provide 5% to 10% weight loss, the glucagon-like peptide-1 (GLP-1) agonist semaglutide 2.4 mg/week (Wegovy, Novo Nordisk), approved by the U.S. Food and Drug Association in June, provides almost double this potential weight loss.
And two new agents that could provide “never seen before weight loss” of 25% could potentially enter the marketplace by 2025: the amylin agonist cagrilintide (Novo Nordisk) and the twincretin tirzepatide (Eli Lilly) (a combined glucose-dependent insulinotropic polypeptide [GIP] and GLP-1 receptor agonist).
In addition, when liraglutide comes off patent, a generic version could potentially be introduced, and combined generic liraglutide plus generic phentermine/topiramate could be a less expensive weight-loss treatment option in the future, he noted.
One size does not fit all
Importantly, weight loss varies widely among individual patients.
A graph of potential weight loss with different treatments (for example, bariatric surgery or liraglutide) versus the percentage of patients that attain the weight losses is roughly bell-shaped, Dr. Kaplan explained. For example, in the STEP1 trial of semaglutide, roughly 7.1% of patients lost less than 5% of their initial weight, 25% of patients lost 20% to 30%, and 10.8% of patients lost 30% or more; that is, patients at the higher end had weight loss comparable to that seen with bariatric surgery
Adding pharmacotherapy after bariatric surgery could be synergistic. For example, in the GRAVITAS study of patients with type 2 diabetes who had gastric bypass surgery, those who received liraglutide after surgery had augmented weight loss compared with those who received placebo.
People at a cocktail party might come up to him and say, “I’d like to lose 5 pounds, 10 pounds,” Dr. Kaplan related in the Q&A session.
“That’s not obesity,” he emphasized. Obesity is excess body fat that poses a risk to health. A person with obesity may have 50 or more excess pounds, and the body is trying to defend this weight.
“If we want to treat obesity more effectively, we have to fully understand why it is a disease and how that disease differs from the cultural desire for thinness,” he reiterated.
“We have to keep the needs and goals of all people living with obesity foremost in our minds, even if many of them have been previously misled by the bias, stigma, blame, and discrimination that surrounds them.”
“We need to re-evaluate what we think we know about obesity and open our minds to new ideas,” he added.
Dr. Kaplan has reported financial ties to Eli Lilly, Gelesis, GI Dynamics, IntelliHealth, Johnson & Johnson, Novo Nordisk, Pfizer, and Rhythm Pharmaceuticals. Dr. Ryan has ties to numerous Novo Nordisk, Pfizer, and several other pharmaceutical companies, including having an ownership interest in Gila Therapeutics, Xeno Biosciences, Epitomee, Calibrate, Roman, and Scientific Intake.
A version of this article first appeared on Medscape.com.
“When considering the challenges of obesity, ask yourself: ‘If it were diabetes, cancer, HIV, or Alzheimer’s, how would you discuss it, approach it, assess it, treat it?’” Lee M. Kaplan, MD, PhD, asked the audience of health care professionals during ObesityWeek®, the annual meeting of The Obesity Society.
“And then do it for obesity, using the full spectrum of tools at our disposal,” he advised.
This was the takeaway that Dr. Kaplan, director of the Obesity, Metabolism, and Nutrition Institute at Massachusetts General Hospital and associate professor, Harvard Medical School, Boston, left the audience with at the end of his lecture entitled, “What does the future of obesity care look like?”
Invited to summarize his main points, Dr. Kaplan told this news organization in an interview that practitioners caring for patients with obesity need to first “recognize that obesity is a disease” caused by dysfunction of the metabolic system that regulates body fat – in the same way immune dysregulation can lead to asthma.
Second, “we are finally developing noninvasive therapies that are more effective,” he noted, referring to the recently approved semaglutide, and even more potent weight-loss therapies that could be on the market within 3 years, so that weight-loss outcomes with pharmacotherapy are approaching those with bariatric surgery.
Third, it is important that patients with obesity get “broad and equitable access” to treatment, and health care practitioners need to be on the same page and have a “shared understanding” of which treatments are appropriate for individual patients, “just as we do for other diseases.”
Need for a shared understanding
“Dr. Kaplan really brought home the idea that we all need a shared understanding of what obesity is – and what it is not,” agreed symposium moderator Donna H. Ryan, MD, in an email.
“He underscored the biologic basis of obesity,” noted Dr. Ryan, professor emerita at Pennington Biomedical Research Center in Baton Rouge, Louisiana, and associate editor-in-chief of Obesity, the official journal of The Obesity Society.
“It is a dysregulation of the body’s weight (especially adipose tissue) regulatory system,” she continued. “The body responds to powerful environmental pressures that produce excess energy balance, and we store that as fat and defend our highest fat mass. This makes obesity a disease, a chronic disease that requires a medical approach to reverse. It’s not a cosmetic problem, it’s a medical problem,” she emphasized.
There is so much misinformation out there about obesity, according to Dr. Ryan.
“People think it’s a lack of willpower, and even patients blame themselves for not being able to lose weight and keep it off. It’s not their fault! It’s biology.”
Although the supplement industry and fad diets falsely promise fast results, there is no magic diet, she continued.
“But we have made progress based on understanding the biologic basis of obesity and have new medications that offer real hope for patients.”
“With 42% of U.S. adults having a BMI that qualifies as obesity, we need a concerted and broad effort to address this problem, and that starts with everybody on the same page as to what obesity is ... a shared understanding of the biologic basis of obesity. It’s time to take obesity seriously,” she summarized, echoing Dr. Kaplan.
A question of biology
“Obesity results from inappropriate pathophysiological regulation of body fat mass,” when the body defends adiposity, Dr. Kaplan explained at the start of his lecture.
The treatment strategy for obesity has always been a stepwise approach starting with lifestyle changes, then pharmacotherapy, then possibly bariatric surgery – each step with a potentially greater chance of weight loss. But now, he explained, medicine is on the verge of having an armamentarium of more potent weight-loss medications.
Compared with phentermine/topiramate, orlistat, naltrexone/bupropion, and liraglutide – which roughly might provide 5% to 10% weight loss, the glucagon-like peptide-1 (GLP-1) agonist semaglutide 2.4 mg/week (Wegovy, Novo Nordisk), approved by the U.S. Food and Drug Association in June, provides almost double this potential weight loss.
And two new agents that could provide “never seen before weight loss” of 25% could potentially enter the marketplace by 2025: the amylin agonist cagrilintide (Novo Nordisk) and the twincretin tirzepatide (Eli Lilly) (a combined glucose-dependent insulinotropic polypeptide [GIP] and GLP-1 receptor agonist).
In addition, when liraglutide comes off patent, a generic version could potentially be introduced, and combined generic liraglutide plus generic phentermine/topiramate could be a less expensive weight-loss treatment option in the future, he noted.
One size does not fit all
Importantly, weight loss varies widely among individual patients.
A graph of potential weight loss with different treatments (for example, bariatric surgery or liraglutide) versus the percentage of patients that attain the weight losses is roughly bell-shaped, Dr. Kaplan explained. For example, in the STEP1 trial of semaglutide, roughly 7.1% of patients lost less than 5% of their initial weight, 25% of patients lost 20% to 30%, and 10.8% of patients lost 30% or more; that is, patients at the higher end had weight loss comparable to that seen with bariatric surgery
Adding pharmacotherapy after bariatric surgery could be synergistic. For example, in the GRAVITAS study of patients with type 2 diabetes who had gastric bypass surgery, those who received liraglutide after surgery had augmented weight loss compared with those who received placebo.
People at a cocktail party might come up to him and say, “I’d like to lose 5 pounds, 10 pounds,” Dr. Kaplan related in the Q&A session.
“That’s not obesity,” he emphasized. Obesity is excess body fat that poses a risk to health. A person with obesity may have 50 or more excess pounds, and the body is trying to defend this weight.
“If we want to treat obesity more effectively, we have to fully understand why it is a disease and how that disease differs from the cultural desire for thinness,” he reiterated.
“We have to keep the needs and goals of all people living with obesity foremost in our minds, even if many of them have been previously misled by the bias, stigma, blame, and discrimination that surrounds them.”
“We need to re-evaluate what we think we know about obesity and open our minds to new ideas,” he added.
Dr. Kaplan has reported financial ties to Eli Lilly, Gelesis, GI Dynamics, IntelliHealth, Johnson & Johnson, Novo Nordisk, Pfizer, and Rhythm Pharmaceuticals. Dr. Ryan has ties to numerous Novo Nordisk, Pfizer, and several other pharmaceutical companies, including having an ownership interest in Gila Therapeutics, Xeno Biosciences, Epitomee, Calibrate, Roman, and Scientific Intake.
A version of this article first appeared on Medscape.com.
“When considering the challenges of obesity, ask yourself: ‘If it were diabetes, cancer, HIV, or Alzheimer’s, how would you discuss it, approach it, assess it, treat it?’” Lee M. Kaplan, MD, PhD, asked the audience of health care professionals during ObesityWeek®, the annual meeting of The Obesity Society.
“And then do it for obesity, using the full spectrum of tools at our disposal,” he advised.
This was the takeaway that Dr. Kaplan, director of the Obesity, Metabolism, and Nutrition Institute at Massachusetts General Hospital and associate professor, Harvard Medical School, Boston, left the audience with at the end of his lecture entitled, “What does the future of obesity care look like?”
Invited to summarize his main points, Dr. Kaplan told this news organization in an interview that practitioners caring for patients with obesity need to first “recognize that obesity is a disease” caused by dysfunction of the metabolic system that regulates body fat – in the same way immune dysregulation can lead to asthma.
Second, “we are finally developing noninvasive therapies that are more effective,” he noted, referring to the recently approved semaglutide, and even more potent weight-loss therapies that could be on the market within 3 years, so that weight-loss outcomes with pharmacotherapy are approaching those with bariatric surgery.
Third, it is important that patients with obesity get “broad and equitable access” to treatment, and health care practitioners need to be on the same page and have a “shared understanding” of which treatments are appropriate for individual patients, “just as we do for other diseases.”
Need for a shared understanding
“Dr. Kaplan really brought home the idea that we all need a shared understanding of what obesity is – and what it is not,” agreed symposium moderator Donna H. Ryan, MD, in an email.
“He underscored the biologic basis of obesity,” noted Dr. Ryan, professor emerita at Pennington Biomedical Research Center in Baton Rouge, Louisiana, and associate editor-in-chief of Obesity, the official journal of The Obesity Society.
“It is a dysregulation of the body’s weight (especially adipose tissue) regulatory system,” she continued. “The body responds to powerful environmental pressures that produce excess energy balance, and we store that as fat and defend our highest fat mass. This makes obesity a disease, a chronic disease that requires a medical approach to reverse. It’s not a cosmetic problem, it’s a medical problem,” she emphasized.
There is so much misinformation out there about obesity, according to Dr. Ryan.
“People think it’s a lack of willpower, and even patients blame themselves for not being able to lose weight and keep it off. It’s not their fault! It’s biology.”
Although the supplement industry and fad diets falsely promise fast results, there is no magic diet, she continued.
“But we have made progress based on understanding the biologic basis of obesity and have new medications that offer real hope for patients.”
“With 42% of U.S. adults having a BMI that qualifies as obesity, we need a concerted and broad effort to address this problem, and that starts with everybody on the same page as to what obesity is ... a shared understanding of the biologic basis of obesity. It’s time to take obesity seriously,” she summarized, echoing Dr. Kaplan.
A question of biology
“Obesity results from inappropriate pathophysiological regulation of body fat mass,” when the body defends adiposity, Dr. Kaplan explained at the start of his lecture.
The treatment strategy for obesity has always been a stepwise approach starting with lifestyle changes, then pharmacotherapy, then possibly bariatric surgery – each step with a potentially greater chance of weight loss. But now, he explained, medicine is on the verge of having an armamentarium of more potent weight-loss medications.
Compared with phentermine/topiramate, orlistat, naltrexone/bupropion, and liraglutide – which roughly might provide 5% to 10% weight loss, the glucagon-like peptide-1 (GLP-1) agonist semaglutide 2.4 mg/week (Wegovy, Novo Nordisk), approved by the U.S. Food and Drug Association in June, provides almost double this potential weight loss.
And two new agents that could provide “never seen before weight loss” of 25% could potentially enter the marketplace by 2025: the amylin agonist cagrilintide (Novo Nordisk) and the twincretin tirzepatide (Eli Lilly) (a combined glucose-dependent insulinotropic polypeptide [GIP] and GLP-1 receptor agonist).
In addition, when liraglutide comes off patent, a generic version could potentially be introduced, and combined generic liraglutide plus generic phentermine/topiramate could be a less expensive weight-loss treatment option in the future, he noted.
One size does not fit all
Importantly, weight loss varies widely among individual patients.
A graph of potential weight loss with different treatments (for example, bariatric surgery or liraglutide) versus the percentage of patients that attain the weight losses is roughly bell-shaped, Dr. Kaplan explained. For example, in the STEP1 trial of semaglutide, roughly 7.1% of patients lost less than 5% of their initial weight, 25% of patients lost 20% to 30%, and 10.8% of patients lost 30% or more; that is, patients at the higher end had weight loss comparable to that seen with bariatric surgery
Adding pharmacotherapy after bariatric surgery could be synergistic. For example, in the GRAVITAS study of patients with type 2 diabetes who had gastric bypass surgery, those who received liraglutide after surgery had augmented weight loss compared with those who received placebo.
People at a cocktail party might come up to him and say, “I’d like to lose 5 pounds, 10 pounds,” Dr. Kaplan related in the Q&A session.
“That’s not obesity,” he emphasized. Obesity is excess body fat that poses a risk to health. A person with obesity may have 50 or more excess pounds, and the body is trying to defend this weight.
“If we want to treat obesity more effectively, we have to fully understand why it is a disease and how that disease differs from the cultural desire for thinness,” he reiterated.
“We have to keep the needs and goals of all people living with obesity foremost in our minds, even if many of them have been previously misled by the bias, stigma, blame, and discrimination that surrounds them.”
“We need to re-evaluate what we think we know about obesity and open our minds to new ideas,” he added.
Dr. Kaplan has reported financial ties to Eli Lilly, Gelesis, GI Dynamics, IntelliHealth, Johnson & Johnson, Novo Nordisk, Pfizer, and Rhythm Pharmaceuticals. Dr. Ryan has ties to numerous Novo Nordisk, Pfizer, and several other pharmaceutical companies, including having an ownership interest in Gila Therapeutics, Xeno Biosciences, Epitomee, Calibrate, Roman, and Scientific Intake.
A version of this article first appeared on Medscape.com.
FROM OBESITY WEEK 2020
AHA dietary guidance cites structural challenges to heart-healthy patterns
In a new scientific statement on diet and lifestyle recommendations, the American Heart Association is highlighting, for the first time, structural challenges that impede the adoption of heart-healthy dietary patterns.
This is in addition to stressing aspects of diet that improve cardiovascular health and reduce cardiovascular risk, with an emphasis on dietary patterns and food-based guidance beyond naming individual foods or nutrients.
The 2021 Dietary Guidance to Improve Cardiovascular Health scientific statement, developed under Alice H. Lichtenstein, DSc, chair of the AHA writing group, provides 10 evidence-based guidance recommendations to promote cardiometabolic health.
“The way to make heart-healthy choices every day,” said Dr. Lichtenstein, of the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University in Boston, in a statement, “is to step back, look at the environment in which you eat, whether it be at home, at work, during social interaction, and then identify what the best choices are. And if there are no good choices, then think about how you can modify your environment so that there are good choices.”
The statement, published in Circulation, underscores growing evidence that nutrition-related chronic diseases have maternal-nutritional origins, and that prevention of pediatric obesity is a key to preserving and prolonging ideal cardiovascular health.
The features are as follows:
- Adjust energy intake and expenditure to achieve and maintain a healthy body weight. To counter the shift toward higher energy intake and more sedentary lifestyles over the past 3 decades, the statement recommends at least 150 minutes of moderate physical activity per week, adjusted for individual’s age, activity level, sex, and size.
- Eat plenty of fruits and vegetables; choose a wide variety. Observational and intervention studies document that dietary patterns rich in varied fruits and vegetables, with the exception of white potatoes, are linked to a lower risk of cardiovascular disease (CVD). Also, whole fruits and vegetables, which more readily provide fiber and satiety, are preferred over juices.
- Choose whole grain foods and products made mostly with whole grains rather than refined grains. Evidence from observational, interventional, and clinical studies confirm the benefits of frequent consumption of whole grains over infrequent consumption or over refined grains in terms of CVD risk, coronary heart disease (CHD), stroke, metabolic syndrome, cardiometabolic risk factors, laxation, and gut microbiota.
- Choose healthy sources of protein, mostly from plants (legumes and nuts).
- Higher intake of legumes, which are rich in protein and fiber, is associated with lower CVD risk, while higher nut intake is associated with lower risks of CVD, CHD, and stroke mortality/incidence. Replacing animal-source foods with plant-source whole foods, beyond health benefits, lowers the diet’s carbon footprint. Meat alternatives are often ultraprocessed and evidence on their short- and long-term health effects is limited. Unsaturated fats are preferred, as are lean, nonprocessed meats.
- Use liquid plant oils rather than tropical oils (coconut, palm, and palm kernel), animal fats (butter and lard), and partially hydrogenated fats. Saturated and trans fats (animal and dairy fats, and partially hydrogenated fat) should be replaced with nontropical liquid plant oils. Evidence supports cardiovascular benefits of dietary unsaturated fats, especially polyunsaturated fats primarily from plant oils (e.g. soybean, corn, safflower and sunflower oils, walnuts, and flax seeds).
- Choose minimally processed foods instead of ultraprocessed foods. Because of their proven association with adverse health outcomes, including overweight and obesity, cardiometabolic disorders (type 2 diabetes, CVD), and all-cause mortality, the consumption of many ultraprocessed foods is of concern. Ultraprocessed foods include artificial colors and flavors and preservatives that promote shelf stability, preserve texture, and increase palatability. A general principle is to emphasize unprocessed or minimally processed foods.
- Minimize intake of beverages and foods with added sugars. Added sugars (commonly glucose, dextrose, sucrose, corn syrup, honey, maple syrup, and concentrated fruit juice) are tied to elevated risk for type 2 diabetes, high cholesterol, and excess body weight. Findings from meta-analyses on body weight and metabolic outcomes for replacing added sugars with low-energy sweeteners are mixed, and the possibility of reverse causality has been raised.
- Choose and prepare foods with little or no salt. In general, the effects of sodium reduction on blood pressure tend to be higher in Black people, middle-aged and older people, and those with hypertension. In the United States, the main combined sources of sodium intake are processed foods, those prepared outside the home, packaged foods, and restaurant foods. Potassium-enriched salts are a promising alternative.
- If you don’t drink alcohol, don’t start; if you choose to drink, limit intake.
- While relationships between alcohol intake and cardiovascular outcomes are complex, the 2020 Dietary Guidelines Advisory Committee recently concluded that those who do drink should consume no more than one drink per day and should not drink alcohol in binges; the 2020 Dietary Guidelines for Americans continues to recommend no more than one drink per day for women and two drinks per day for men.
- Adhere to the guidance regardless in all settings. Food-based dietary guidance applies to all foods and beverages, regardless of where prepared, procured, and consumed. Policies should be enacted that encourage healthier default options (for example, whole grains, minimized sodium and sugar content).
Recognizing impediments
The AHA/ASA scientific statement closes with the declaration: “Creating an environment that facilitates, rather than impedes, adherence to heart-healthy dietary patterns among all individuals is a public health imperative.” It points to the National Institutes of Health’s 2020-2030 Strategic Plan for National Institutes of Health Nutrition Research, which focuses on precision nutrition as a means “to determine the impact on health of not only what individuals eat, but also of why, when, and how they eat throughout the life course.”
Ultimately, precision nutrition may provide personalized diets for CVD prevention. But the “food environment,” often conditioned by “rampant nutrition misinformation” through local, state, and federal practices and policies, may impede the adoption of heart-healthy dietary patterns. Factors such as targeted food marketing (for example, of processed food and beverages in minority neighborhoods), structural racism, neighborhood segregation, unhealthy built environments, and food insecurity create environments in which unhealthy foods are the default option.”
These factors compound adverse dietary and health effects, and underscore a need to “directly combat nutrition misinformation among the public and health care professionals.” They also explain why, despite widespread knowledge of heart-healthy dietary pattern components, little progress has been made in achieving dietary goals in the United States.
Dr. Lichtenstein’s office, in response to a request regarding AHA advocacy and consumer programs, provided the following links: Voices for Healthy Kids initiative site and choosing healthier processed foods and one on fresh, frozen, and canned fruits and vegetables.
Dr. Lichtenstein had no disclosures. Disclosures for the writing group members are included in the statement.
In a new scientific statement on diet and lifestyle recommendations, the American Heart Association is highlighting, for the first time, structural challenges that impede the adoption of heart-healthy dietary patterns.
This is in addition to stressing aspects of diet that improve cardiovascular health and reduce cardiovascular risk, with an emphasis on dietary patterns and food-based guidance beyond naming individual foods or nutrients.
The 2021 Dietary Guidance to Improve Cardiovascular Health scientific statement, developed under Alice H. Lichtenstein, DSc, chair of the AHA writing group, provides 10 evidence-based guidance recommendations to promote cardiometabolic health.
“The way to make heart-healthy choices every day,” said Dr. Lichtenstein, of the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University in Boston, in a statement, “is to step back, look at the environment in which you eat, whether it be at home, at work, during social interaction, and then identify what the best choices are. And if there are no good choices, then think about how you can modify your environment so that there are good choices.”
The statement, published in Circulation, underscores growing evidence that nutrition-related chronic diseases have maternal-nutritional origins, and that prevention of pediatric obesity is a key to preserving and prolonging ideal cardiovascular health.
The features are as follows:
- Adjust energy intake and expenditure to achieve and maintain a healthy body weight. To counter the shift toward higher energy intake and more sedentary lifestyles over the past 3 decades, the statement recommends at least 150 minutes of moderate physical activity per week, adjusted for individual’s age, activity level, sex, and size.
- Eat plenty of fruits and vegetables; choose a wide variety. Observational and intervention studies document that dietary patterns rich in varied fruits and vegetables, with the exception of white potatoes, are linked to a lower risk of cardiovascular disease (CVD). Also, whole fruits and vegetables, which more readily provide fiber and satiety, are preferred over juices.
- Choose whole grain foods and products made mostly with whole grains rather than refined grains. Evidence from observational, interventional, and clinical studies confirm the benefits of frequent consumption of whole grains over infrequent consumption or over refined grains in terms of CVD risk, coronary heart disease (CHD), stroke, metabolic syndrome, cardiometabolic risk factors, laxation, and gut microbiota.
- Choose healthy sources of protein, mostly from plants (legumes and nuts).
- Higher intake of legumes, which are rich in protein and fiber, is associated with lower CVD risk, while higher nut intake is associated with lower risks of CVD, CHD, and stroke mortality/incidence. Replacing animal-source foods with plant-source whole foods, beyond health benefits, lowers the diet’s carbon footprint. Meat alternatives are often ultraprocessed and evidence on their short- and long-term health effects is limited. Unsaturated fats are preferred, as are lean, nonprocessed meats.
- Use liquid plant oils rather than tropical oils (coconut, palm, and palm kernel), animal fats (butter and lard), and partially hydrogenated fats. Saturated and trans fats (animal and dairy fats, and partially hydrogenated fat) should be replaced with nontropical liquid plant oils. Evidence supports cardiovascular benefits of dietary unsaturated fats, especially polyunsaturated fats primarily from plant oils (e.g. soybean, corn, safflower and sunflower oils, walnuts, and flax seeds).
- Choose minimally processed foods instead of ultraprocessed foods. Because of their proven association with adverse health outcomes, including overweight and obesity, cardiometabolic disorders (type 2 diabetes, CVD), and all-cause mortality, the consumption of many ultraprocessed foods is of concern. Ultraprocessed foods include artificial colors and flavors and preservatives that promote shelf stability, preserve texture, and increase palatability. A general principle is to emphasize unprocessed or minimally processed foods.
- Minimize intake of beverages and foods with added sugars. Added sugars (commonly glucose, dextrose, sucrose, corn syrup, honey, maple syrup, and concentrated fruit juice) are tied to elevated risk for type 2 diabetes, high cholesterol, and excess body weight. Findings from meta-analyses on body weight and metabolic outcomes for replacing added sugars with low-energy sweeteners are mixed, and the possibility of reverse causality has been raised.
- Choose and prepare foods with little or no salt. In general, the effects of sodium reduction on blood pressure tend to be higher in Black people, middle-aged and older people, and those with hypertension. In the United States, the main combined sources of sodium intake are processed foods, those prepared outside the home, packaged foods, and restaurant foods. Potassium-enriched salts are a promising alternative.
- If you don’t drink alcohol, don’t start; if you choose to drink, limit intake.
- While relationships between alcohol intake and cardiovascular outcomes are complex, the 2020 Dietary Guidelines Advisory Committee recently concluded that those who do drink should consume no more than one drink per day and should not drink alcohol in binges; the 2020 Dietary Guidelines for Americans continues to recommend no more than one drink per day for women and two drinks per day for men.
- Adhere to the guidance regardless in all settings. Food-based dietary guidance applies to all foods and beverages, regardless of where prepared, procured, and consumed. Policies should be enacted that encourage healthier default options (for example, whole grains, minimized sodium and sugar content).
Recognizing impediments
The AHA/ASA scientific statement closes with the declaration: “Creating an environment that facilitates, rather than impedes, adherence to heart-healthy dietary patterns among all individuals is a public health imperative.” It points to the National Institutes of Health’s 2020-2030 Strategic Plan for National Institutes of Health Nutrition Research, which focuses on precision nutrition as a means “to determine the impact on health of not only what individuals eat, but also of why, when, and how they eat throughout the life course.”
Ultimately, precision nutrition may provide personalized diets for CVD prevention. But the “food environment,” often conditioned by “rampant nutrition misinformation” through local, state, and federal practices and policies, may impede the adoption of heart-healthy dietary patterns. Factors such as targeted food marketing (for example, of processed food and beverages in minority neighborhoods), structural racism, neighborhood segregation, unhealthy built environments, and food insecurity create environments in which unhealthy foods are the default option.”
These factors compound adverse dietary and health effects, and underscore a need to “directly combat nutrition misinformation among the public and health care professionals.” They also explain why, despite widespread knowledge of heart-healthy dietary pattern components, little progress has been made in achieving dietary goals in the United States.
Dr. Lichtenstein’s office, in response to a request regarding AHA advocacy and consumer programs, provided the following links: Voices for Healthy Kids initiative site and choosing healthier processed foods and one on fresh, frozen, and canned fruits and vegetables.
Dr. Lichtenstein had no disclosures. Disclosures for the writing group members are included in the statement.
In a new scientific statement on diet and lifestyle recommendations, the American Heart Association is highlighting, for the first time, structural challenges that impede the adoption of heart-healthy dietary patterns.
This is in addition to stressing aspects of diet that improve cardiovascular health and reduce cardiovascular risk, with an emphasis on dietary patterns and food-based guidance beyond naming individual foods or nutrients.
The 2021 Dietary Guidance to Improve Cardiovascular Health scientific statement, developed under Alice H. Lichtenstein, DSc, chair of the AHA writing group, provides 10 evidence-based guidance recommendations to promote cardiometabolic health.
“The way to make heart-healthy choices every day,” said Dr. Lichtenstein, of the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University in Boston, in a statement, “is to step back, look at the environment in which you eat, whether it be at home, at work, during social interaction, and then identify what the best choices are. And if there are no good choices, then think about how you can modify your environment so that there are good choices.”
The statement, published in Circulation, underscores growing evidence that nutrition-related chronic diseases have maternal-nutritional origins, and that prevention of pediatric obesity is a key to preserving and prolonging ideal cardiovascular health.
The features are as follows:
- Adjust energy intake and expenditure to achieve and maintain a healthy body weight. To counter the shift toward higher energy intake and more sedentary lifestyles over the past 3 decades, the statement recommends at least 150 minutes of moderate physical activity per week, adjusted for individual’s age, activity level, sex, and size.
- Eat plenty of fruits and vegetables; choose a wide variety. Observational and intervention studies document that dietary patterns rich in varied fruits and vegetables, with the exception of white potatoes, are linked to a lower risk of cardiovascular disease (CVD). Also, whole fruits and vegetables, which more readily provide fiber and satiety, are preferred over juices.
- Choose whole grain foods and products made mostly with whole grains rather than refined grains. Evidence from observational, interventional, and clinical studies confirm the benefits of frequent consumption of whole grains over infrequent consumption or over refined grains in terms of CVD risk, coronary heart disease (CHD), stroke, metabolic syndrome, cardiometabolic risk factors, laxation, and gut microbiota.
- Choose healthy sources of protein, mostly from plants (legumes and nuts).
- Higher intake of legumes, which are rich in protein and fiber, is associated with lower CVD risk, while higher nut intake is associated with lower risks of CVD, CHD, and stroke mortality/incidence. Replacing animal-source foods with plant-source whole foods, beyond health benefits, lowers the diet’s carbon footprint. Meat alternatives are often ultraprocessed and evidence on their short- and long-term health effects is limited. Unsaturated fats are preferred, as are lean, nonprocessed meats.
- Use liquid plant oils rather than tropical oils (coconut, palm, and palm kernel), animal fats (butter and lard), and partially hydrogenated fats. Saturated and trans fats (animal and dairy fats, and partially hydrogenated fat) should be replaced with nontropical liquid plant oils. Evidence supports cardiovascular benefits of dietary unsaturated fats, especially polyunsaturated fats primarily from plant oils (e.g. soybean, corn, safflower and sunflower oils, walnuts, and flax seeds).
- Choose minimally processed foods instead of ultraprocessed foods. Because of their proven association with adverse health outcomes, including overweight and obesity, cardiometabolic disorders (type 2 diabetes, CVD), and all-cause mortality, the consumption of many ultraprocessed foods is of concern. Ultraprocessed foods include artificial colors and flavors and preservatives that promote shelf stability, preserve texture, and increase palatability. A general principle is to emphasize unprocessed or minimally processed foods.
- Minimize intake of beverages and foods with added sugars. Added sugars (commonly glucose, dextrose, sucrose, corn syrup, honey, maple syrup, and concentrated fruit juice) are tied to elevated risk for type 2 diabetes, high cholesterol, and excess body weight. Findings from meta-analyses on body weight and metabolic outcomes for replacing added sugars with low-energy sweeteners are mixed, and the possibility of reverse causality has been raised.
- Choose and prepare foods with little or no salt. In general, the effects of sodium reduction on blood pressure tend to be higher in Black people, middle-aged and older people, and those with hypertension. In the United States, the main combined sources of sodium intake are processed foods, those prepared outside the home, packaged foods, and restaurant foods. Potassium-enriched salts are a promising alternative.
- If you don’t drink alcohol, don’t start; if you choose to drink, limit intake.
- While relationships between alcohol intake and cardiovascular outcomes are complex, the 2020 Dietary Guidelines Advisory Committee recently concluded that those who do drink should consume no more than one drink per day and should not drink alcohol in binges; the 2020 Dietary Guidelines for Americans continues to recommend no more than one drink per day for women and two drinks per day for men.
- Adhere to the guidance regardless in all settings. Food-based dietary guidance applies to all foods and beverages, regardless of where prepared, procured, and consumed. Policies should be enacted that encourage healthier default options (for example, whole grains, minimized sodium and sugar content).
Recognizing impediments
The AHA/ASA scientific statement closes with the declaration: “Creating an environment that facilitates, rather than impedes, adherence to heart-healthy dietary patterns among all individuals is a public health imperative.” It points to the National Institutes of Health’s 2020-2030 Strategic Plan for National Institutes of Health Nutrition Research, which focuses on precision nutrition as a means “to determine the impact on health of not only what individuals eat, but also of why, when, and how they eat throughout the life course.”
Ultimately, precision nutrition may provide personalized diets for CVD prevention. But the “food environment,” often conditioned by “rampant nutrition misinformation” through local, state, and federal practices and policies, may impede the adoption of heart-healthy dietary patterns. Factors such as targeted food marketing (for example, of processed food and beverages in minority neighborhoods), structural racism, neighborhood segregation, unhealthy built environments, and food insecurity create environments in which unhealthy foods are the default option.”
These factors compound adverse dietary and health effects, and underscore a need to “directly combat nutrition misinformation among the public and health care professionals.” They also explain why, despite widespread knowledge of heart-healthy dietary pattern components, little progress has been made in achieving dietary goals in the United States.
Dr. Lichtenstein’s office, in response to a request regarding AHA advocacy and consumer programs, provided the following links: Voices for Healthy Kids initiative site and choosing healthier processed foods and one on fresh, frozen, and canned fruits and vegetables.
Dr. Lichtenstein had no disclosures. Disclosures for the writing group members are included in the statement.
FROM CIRCULATION
‘Green’ Mediterranean diet benefits may arise from ‘hunger hormone’
A “green” adaptation to the traditional Mediterranean diet could help improve insulin sensitivity and reduce visceral fat by increasing levels of ghrelin, the “hunger hormone,” new research suggests.
The current study is a new analysis of data from the randomized DIRECT-PLUS trial, which showed that the addition of green tea and substitution of red meat for a plant-based (Mankai) protein shake at dinner – dubbed the “green Mediterranean diet” – resulted in further improved cardiometabolic benefits compared with the traditional Mediterranean diet among people with baseline abdominal obesity and/or dyslipidemia, according to the researchers.
They specifically looked at ghrelin, nicknamed the “hunger hormone,” a neuropeptide mainly secreted by the gastric epithelium. It acts on the pituitary gland to release growth hormone. Ghrelin concentrations increase during fasting and decrease after eating. Lower levels are associated with insulin resistance and obesity.
Fasting ghrelin levels were elevated with weight loss, but those increases were associated with improved insulin sensitivity and regression of visceral adipose tissue even beyond weight loss.
Although the caloric restriction and weight loss were comparable with the two Mediterranean diets, the green Mediterranean diet group had double the increase in fasting ghrelin as the traditional Mediterranean diet group, the researchers point out in their report .
‘Hypothesis-generating’ study pushes many hot topic buttons
“This specific study is the first to show that ghrelin levels play an important role in metabolic adaptation to a dietary or lifestyle intervention and that ghrelin is an important player in the axis of adiposity, insulin resistance, and metabolic health,” lead researcher Gal Tsaban, MD, told this news organization.
The data partially explain some of the prior beneficial effects seen with the Green Mediterranean diet, even after adjustment for weight loss, he explained, noting that the revised version of the diet “could be considered as an alternative lifestyle intervention with possible metabolic benefits even beyond the Mediterranean diet, which is what we currently recommend for patients.”
Asked for comment, Christopher Gardner, PhD, was not as enthusiastic.
He took issue with the fact that ghrelin wasn’t a primary or even a prespecified secondary outcome of the DIRECT-PLUS trial and because the specific plant-based ingredients of the green Mediterranean diet used in the study may not be widely available or desirable and therefore limit the study’s generalizability.
Dr. Gardner, who is director of nutrition studies at the Stanford Prevention Research Center, California, also said: “They’re tying lots of interesting things together. The Mediterranean diet is a cool thing, ghrelin is a cool thing, and insulin resistance is hugely important in this day and age, even though we don’t all agree on how to measure it.”
“But it gets tough as you try to link them all together for an exploratory outcome. ... To me it’s an interesting hypothesis-generating study that pushes a lot of interesting buttons that are hot topics in the field.”
Green Mediterranean diet led to higher ghrelin, metabolic benefits
In DIRECT-PLUS, a total of 294 adults (88% men) older than 30 years of age with abdominal obesity (waist circumference >102 cm for men or >88 cm for women), or dyslipidemia (triglycerides >150 mg/dL and HDL-cholesterol ≤40 mg/dL for men or ≤50 mg/dL for women) were included. Half had prediabetes or type 2 diabetes.
They were randomized to one of three diets: a diet based on standard healthy dietary guidelines; a traditional Mediterranean diet low in simple carbohydrates, rich in vegetables, with poultry and fish replacing beef and lamb and 28 g/day of walnuts; or the Green-Mediterranean diet, including 3-4 cups/day of green tea and 100 g/day of a green shake made from the Mankai strain of Wolffia globosa (also known as duckweed) replacing dinner, and 28 g/day of walnuts.
The Green Mediterranean diet included 800 mg more polyphenols than the traditional Mediterranean diet. Both were equally calorie-restricted, at about 1,500-1,800 kcal/day for men and 1,200-1,400 kcal/day for women. All three groups were instructed to engage in regular physical activity and were given free gym memberships.
The retention rate was 98.3% after 6 months and 89.8% after 18 months.
Weight loss was similar between the two Mediterranean diet groups (2.9% and 3.9% for the traditional and green versions, respectively) compared with the standard healthy diet (0.6%) (P < .05 for both Mediterranean diet groups vs. control).
After 6 months, fasting ghrelin increased in the traditional (8.0%; P = .015) and green (10.5%; P = 0.031) Mediterranean groups versus baseline, with no significant change in the control group.
By 18 months, fasting ghrelin was significantly greater compared with baseline only in the green Mediterranean group (P = .012).
Because the differences in fasting ghrelin trajectories were only significant in men – likely due to the small sample size of women – a subsequent 18-month analysis was limited to the men. In a multivariate model adjusted for age, intervention group, baseline biomarker values, and 18-month weight changes, the 18-month change in fasting ghrelin remained a significant predictor for changes in A1c and homeostatic model of insulin resistance (HOMA-IR; P = .022).
Because weight loss remained the most significant predictor of improved insulin resistance, a further analysis examined the association between changes in fasting ghrelin levels with changes in the fraction of insulin resistance marker that were not attributed to weight loss, per se. With the other adjustments, fasting ghrelin was associated with residual reductions in A1c (P = .003), HOMA-IR (P = .021), increased HDL-cholesterol (P = .024), and relative visceral adipose tissue loss (P = .003).
No specific product needed to push Mediterranean diet towards vegan
Dr. Tsaban, a nutritional researcher and cardiologist at Ben-Gurion University and Soroka University Medical Center, Be’er-Sheva, Israel, said the Mankai shake is commonly consumed in Israel but is also available worldwide. The study participants, all employees at an isolated nuclear research facility in the Negev, were particularly motivated. “They didn’t have a satiety problem with the drink. It made them very full,” he said. The manufacturer supplied the shakes but didn’t fund the study, he added.
However, Dr. Tsaban said that the “green Mediterranean diet” doesn’t depend on specific products.
Rather, “the concept is to push the Mediterranean diet a bit further and to replace the animal-based protein with vegetable-based protein, to shift your dietary habits towards a more vegan lifestyle. It’s not completely vegan, but it’s trending there. ... Our main goal was to increase the polyphenol intake, the antioxidant intake from vegetables. ... I think it can be replicated.”
Dr. Gardner said, “At the end of the day, it’s an exploratory study. ... It raises some interesting points that give the rest of us room to follow-up on.”
The study was funded by grants from the German Research Foundation, the Israel Ministry of Health, the Israel Ministry of Science and Technology, and the California Walnut Commission. Dr. Tsaban has reported no further relevant financial relationships. Dr. Gardner has reported receiving study funding from Beyond Meat.
A version of this article first appeared on Medscape.com.
A “green” adaptation to the traditional Mediterranean diet could help improve insulin sensitivity and reduce visceral fat by increasing levels of ghrelin, the “hunger hormone,” new research suggests.
The current study is a new analysis of data from the randomized DIRECT-PLUS trial, which showed that the addition of green tea and substitution of red meat for a plant-based (Mankai) protein shake at dinner – dubbed the “green Mediterranean diet” – resulted in further improved cardiometabolic benefits compared with the traditional Mediterranean diet among people with baseline abdominal obesity and/or dyslipidemia, according to the researchers.
They specifically looked at ghrelin, nicknamed the “hunger hormone,” a neuropeptide mainly secreted by the gastric epithelium. It acts on the pituitary gland to release growth hormone. Ghrelin concentrations increase during fasting and decrease after eating. Lower levels are associated with insulin resistance and obesity.
Fasting ghrelin levels were elevated with weight loss, but those increases were associated with improved insulin sensitivity and regression of visceral adipose tissue even beyond weight loss.
Although the caloric restriction and weight loss were comparable with the two Mediterranean diets, the green Mediterranean diet group had double the increase in fasting ghrelin as the traditional Mediterranean diet group, the researchers point out in their report .
‘Hypothesis-generating’ study pushes many hot topic buttons
“This specific study is the first to show that ghrelin levels play an important role in metabolic adaptation to a dietary or lifestyle intervention and that ghrelin is an important player in the axis of adiposity, insulin resistance, and metabolic health,” lead researcher Gal Tsaban, MD, told this news organization.
The data partially explain some of the prior beneficial effects seen with the Green Mediterranean diet, even after adjustment for weight loss, he explained, noting that the revised version of the diet “could be considered as an alternative lifestyle intervention with possible metabolic benefits even beyond the Mediterranean diet, which is what we currently recommend for patients.”
Asked for comment, Christopher Gardner, PhD, was not as enthusiastic.
He took issue with the fact that ghrelin wasn’t a primary or even a prespecified secondary outcome of the DIRECT-PLUS trial and because the specific plant-based ingredients of the green Mediterranean diet used in the study may not be widely available or desirable and therefore limit the study’s generalizability.
Dr. Gardner, who is director of nutrition studies at the Stanford Prevention Research Center, California, also said: “They’re tying lots of interesting things together. The Mediterranean diet is a cool thing, ghrelin is a cool thing, and insulin resistance is hugely important in this day and age, even though we don’t all agree on how to measure it.”
“But it gets tough as you try to link them all together for an exploratory outcome. ... To me it’s an interesting hypothesis-generating study that pushes a lot of interesting buttons that are hot topics in the field.”
Green Mediterranean diet led to higher ghrelin, metabolic benefits
In DIRECT-PLUS, a total of 294 adults (88% men) older than 30 years of age with abdominal obesity (waist circumference >102 cm for men or >88 cm for women), or dyslipidemia (triglycerides >150 mg/dL and HDL-cholesterol ≤40 mg/dL for men or ≤50 mg/dL for women) were included. Half had prediabetes or type 2 diabetes.
They were randomized to one of three diets: a diet based on standard healthy dietary guidelines; a traditional Mediterranean diet low in simple carbohydrates, rich in vegetables, with poultry and fish replacing beef and lamb and 28 g/day of walnuts; or the Green-Mediterranean diet, including 3-4 cups/day of green tea and 100 g/day of a green shake made from the Mankai strain of Wolffia globosa (also known as duckweed) replacing dinner, and 28 g/day of walnuts.
The Green Mediterranean diet included 800 mg more polyphenols than the traditional Mediterranean diet. Both were equally calorie-restricted, at about 1,500-1,800 kcal/day for men and 1,200-1,400 kcal/day for women. All three groups were instructed to engage in regular physical activity and were given free gym memberships.
The retention rate was 98.3% after 6 months and 89.8% after 18 months.
Weight loss was similar between the two Mediterranean diet groups (2.9% and 3.9% for the traditional and green versions, respectively) compared with the standard healthy diet (0.6%) (P < .05 for both Mediterranean diet groups vs. control).
After 6 months, fasting ghrelin increased in the traditional (8.0%; P = .015) and green (10.5%; P = 0.031) Mediterranean groups versus baseline, with no significant change in the control group.
By 18 months, fasting ghrelin was significantly greater compared with baseline only in the green Mediterranean group (P = .012).
Because the differences in fasting ghrelin trajectories were only significant in men – likely due to the small sample size of women – a subsequent 18-month analysis was limited to the men. In a multivariate model adjusted for age, intervention group, baseline biomarker values, and 18-month weight changes, the 18-month change in fasting ghrelin remained a significant predictor for changes in A1c and homeostatic model of insulin resistance (HOMA-IR; P = .022).
Because weight loss remained the most significant predictor of improved insulin resistance, a further analysis examined the association between changes in fasting ghrelin levels with changes in the fraction of insulin resistance marker that were not attributed to weight loss, per se. With the other adjustments, fasting ghrelin was associated with residual reductions in A1c (P = .003), HOMA-IR (P = .021), increased HDL-cholesterol (P = .024), and relative visceral adipose tissue loss (P = .003).
No specific product needed to push Mediterranean diet towards vegan
Dr. Tsaban, a nutritional researcher and cardiologist at Ben-Gurion University and Soroka University Medical Center, Be’er-Sheva, Israel, said the Mankai shake is commonly consumed in Israel but is also available worldwide. The study participants, all employees at an isolated nuclear research facility in the Negev, were particularly motivated. “They didn’t have a satiety problem with the drink. It made them very full,” he said. The manufacturer supplied the shakes but didn’t fund the study, he added.
However, Dr. Tsaban said that the “green Mediterranean diet” doesn’t depend on specific products.
Rather, “the concept is to push the Mediterranean diet a bit further and to replace the animal-based protein with vegetable-based protein, to shift your dietary habits towards a more vegan lifestyle. It’s not completely vegan, but it’s trending there. ... Our main goal was to increase the polyphenol intake, the antioxidant intake from vegetables. ... I think it can be replicated.”
Dr. Gardner said, “At the end of the day, it’s an exploratory study. ... It raises some interesting points that give the rest of us room to follow-up on.”
The study was funded by grants from the German Research Foundation, the Israel Ministry of Health, the Israel Ministry of Science and Technology, and the California Walnut Commission. Dr. Tsaban has reported no further relevant financial relationships. Dr. Gardner has reported receiving study funding from Beyond Meat.
A version of this article first appeared on Medscape.com.
A “green” adaptation to the traditional Mediterranean diet could help improve insulin sensitivity and reduce visceral fat by increasing levels of ghrelin, the “hunger hormone,” new research suggests.
The current study is a new analysis of data from the randomized DIRECT-PLUS trial, which showed that the addition of green tea and substitution of red meat for a plant-based (Mankai) protein shake at dinner – dubbed the “green Mediterranean diet” – resulted in further improved cardiometabolic benefits compared with the traditional Mediterranean diet among people with baseline abdominal obesity and/or dyslipidemia, according to the researchers.
They specifically looked at ghrelin, nicknamed the “hunger hormone,” a neuropeptide mainly secreted by the gastric epithelium. It acts on the pituitary gland to release growth hormone. Ghrelin concentrations increase during fasting and decrease after eating. Lower levels are associated with insulin resistance and obesity.
Fasting ghrelin levels were elevated with weight loss, but those increases were associated with improved insulin sensitivity and regression of visceral adipose tissue even beyond weight loss.
Although the caloric restriction and weight loss were comparable with the two Mediterranean diets, the green Mediterranean diet group had double the increase in fasting ghrelin as the traditional Mediterranean diet group, the researchers point out in their report .
‘Hypothesis-generating’ study pushes many hot topic buttons
“This specific study is the first to show that ghrelin levels play an important role in metabolic adaptation to a dietary or lifestyle intervention and that ghrelin is an important player in the axis of adiposity, insulin resistance, and metabolic health,” lead researcher Gal Tsaban, MD, told this news organization.
The data partially explain some of the prior beneficial effects seen with the Green Mediterranean diet, even after adjustment for weight loss, he explained, noting that the revised version of the diet “could be considered as an alternative lifestyle intervention with possible metabolic benefits even beyond the Mediterranean diet, which is what we currently recommend for patients.”
Asked for comment, Christopher Gardner, PhD, was not as enthusiastic.
He took issue with the fact that ghrelin wasn’t a primary or even a prespecified secondary outcome of the DIRECT-PLUS trial and because the specific plant-based ingredients of the green Mediterranean diet used in the study may not be widely available or desirable and therefore limit the study’s generalizability.
Dr. Gardner, who is director of nutrition studies at the Stanford Prevention Research Center, California, also said: “They’re tying lots of interesting things together. The Mediterranean diet is a cool thing, ghrelin is a cool thing, and insulin resistance is hugely important in this day and age, even though we don’t all agree on how to measure it.”
“But it gets tough as you try to link them all together for an exploratory outcome. ... To me it’s an interesting hypothesis-generating study that pushes a lot of interesting buttons that are hot topics in the field.”
Green Mediterranean diet led to higher ghrelin, metabolic benefits
In DIRECT-PLUS, a total of 294 adults (88% men) older than 30 years of age with abdominal obesity (waist circumference >102 cm for men or >88 cm for women), or dyslipidemia (triglycerides >150 mg/dL and HDL-cholesterol ≤40 mg/dL for men or ≤50 mg/dL for women) were included. Half had prediabetes or type 2 diabetes.
They were randomized to one of three diets: a diet based on standard healthy dietary guidelines; a traditional Mediterranean diet low in simple carbohydrates, rich in vegetables, with poultry and fish replacing beef and lamb and 28 g/day of walnuts; or the Green-Mediterranean diet, including 3-4 cups/day of green tea and 100 g/day of a green shake made from the Mankai strain of Wolffia globosa (also known as duckweed) replacing dinner, and 28 g/day of walnuts.
The Green Mediterranean diet included 800 mg more polyphenols than the traditional Mediterranean diet. Both were equally calorie-restricted, at about 1,500-1,800 kcal/day for men and 1,200-1,400 kcal/day for women. All three groups were instructed to engage in regular physical activity and were given free gym memberships.
The retention rate was 98.3% after 6 months and 89.8% after 18 months.
Weight loss was similar between the two Mediterranean diet groups (2.9% and 3.9% for the traditional and green versions, respectively) compared with the standard healthy diet (0.6%) (P < .05 for both Mediterranean diet groups vs. control).
After 6 months, fasting ghrelin increased in the traditional (8.0%; P = .015) and green (10.5%; P = 0.031) Mediterranean groups versus baseline, with no significant change in the control group.
By 18 months, fasting ghrelin was significantly greater compared with baseline only in the green Mediterranean group (P = .012).
Because the differences in fasting ghrelin trajectories were only significant in men – likely due to the small sample size of women – a subsequent 18-month analysis was limited to the men. In a multivariate model adjusted for age, intervention group, baseline biomarker values, and 18-month weight changes, the 18-month change in fasting ghrelin remained a significant predictor for changes in A1c and homeostatic model of insulin resistance (HOMA-IR; P = .022).
Because weight loss remained the most significant predictor of improved insulin resistance, a further analysis examined the association between changes in fasting ghrelin levels with changes in the fraction of insulin resistance marker that were not attributed to weight loss, per se. With the other adjustments, fasting ghrelin was associated with residual reductions in A1c (P = .003), HOMA-IR (P = .021), increased HDL-cholesterol (P = .024), and relative visceral adipose tissue loss (P = .003).
No specific product needed to push Mediterranean diet towards vegan
Dr. Tsaban, a nutritional researcher and cardiologist at Ben-Gurion University and Soroka University Medical Center, Be’er-Sheva, Israel, said the Mankai shake is commonly consumed in Israel but is also available worldwide. The study participants, all employees at an isolated nuclear research facility in the Negev, were particularly motivated. “They didn’t have a satiety problem with the drink. It made them very full,” he said. The manufacturer supplied the shakes but didn’t fund the study, he added.
However, Dr. Tsaban said that the “green Mediterranean diet” doesn’t depend on specific products.
Rather, “the concept is to push the Mediterranean diet a bit further and to replace the animal-based protein with vegetable-based protein, to shift your dietary habits towards a more vegan lifestyle. It’s not completely vegan, but it’s trending there. ... Our main goal was to increase the polyphenol intake, the antioxidant intake from vegetables. ... I think it can be replicated.”
Dr. Gardner said, “At the end of the day, it’s an exploratory study. ... It raises some interesting points that give the rest of us room to follow-up on.”
The study was funded by grants from the German Research Foundation, the Israel Ministry of Health, the Israel Ministry of Science and Technology, and the California Walnut Commission. Dr. Tsaban has reported no further relevant financial relationships. Dr. Gardner has reported receiving study funding from Beyond Meat.
A version of this article first appeared on Medscape.com.
SURPASS-4: ‘Twincretin’ tirzepatide surpasses insulin glargine in pivotal trial
, which compared the investigational agent to insulin glargine for treatment of type 2 diabetes. The study comprised 1,995 randomized patients with inadequately controlled type 2 diabetes and high cardiovascular disease risk.
Positive results for tirzepatide from SURPASS-4, the fifth and final registration trial for the drug, as well as in the other four studies, tee up the agent for a planned approval submission to the Food and Drug Administration by the end of 2021.
SURPASS-4 differed from the four other pivotal trials not only in its comparator agent, but also by being the longest of the five and the only one that, by design, enrolled exclusively patients with either established cardiovascular disease or high risk for the disease.
The new results “provide initial support for glycemic control [by tirzepatide] being sustained for more than 1 year,” wrote Stefano Del Prato, MD, and associates in their published report in The Lancet.
Despite the trial’s primary endpoint of change in hemoglobin A1c after 52 weeks on treatment, the study continued for another year and had a median time on treatment of 85 weeks, with 7% of enrolled patients remaining on treatment for the maximum on-treatment follow-up of 104 weeks.
Potent glycemic control
The primary endpoint showed that treatment with tirzepatide produced an average incremental reduction in A1c of 0.99% among 328 patients treated with a 10 mg weekly subcutaneous dosage compared with the 1,000 patients who received insulin glargine (Basaglar, Lantus, Toujeo), and an average 1.14% incremental reduction in A1c among 338 patients on a 15-mg dosage once weekly, reported Dr. Del Prato, professor and chief of the section of diabetes at the University of Pisa (Italy).
This met the prespecified criteria for noninferiority of tirzepatide to insulin glargine for reduction of A1c, the study’s primary objective, and also met the study’s prespecified definition of superiority, both statistically significant results. The study also tested a weekly tirzepatide dosage of 5 mg that was significantly superior to insulin glargine for glycemic control.
“The magnitude of A1c reduction and the proportions of patients reaching glycemic targets appear to be larger than in similar studies in which GLP-1 [glucagon-like peptide–1] receptor agonists have been compared with glargine,” the investigators wrote in their report.
The A1c effect of tirzepatide seen across all five SURPASS trials “surpasses what we’ve seen with other [glycemia control] drugs, with the possible exception of insulin,” said Jan W. Eriksson, MD, PhD, professor of clinical diabetes and metabolism at Uppsala (Sweden) University.
The results also showed several other clinically meaningful benefits from tirzepatide treatment. A composite outcome of reduction of A1c to less than 7% with no weight gain and no clinically significant documented symptomatic or severe hypoglycemia occurred in 74%-88% of patients in the three tirzepatide arms compared with 13% of patients treated with insulin glargine. After 52 weeks on treatment, body weight fell by an average of 8%, 11%, and 13% from baseline in the three tirzepatide treatment arms in a dose-dependent way, while weight rose by an average of 2% among those who received insulin glargine. Weight reduction of at least 10% occurred in 36%-66% of patients treated with tirzepatide, compared with 2% on treatment with insulin glargine.
SURPASS-4 was not run as a blinded study because of differences in administration of the comparator agents.
Safety appears similar to GLP-1 receptor agonists
The safety profile of tirzepatide in SURPASS-4, as it was in all of the other four trials in the SURPASS series, was consistent with previously reported safety of agents in the GLP-1 receptor agonist class, said Dr. Del Prato. It was an expected finding as tirzepatide combines activity as a GLP-1 receptor agonist with activity as a glucose-dependent insulinotropic polypeptide (GIP) receptor agonist in a single molecule.
The most common adverse effects were gastrointestinal, including diarrhea, nausea, decreased appetite, and vomiting. Most of these effects were mild or moderate, and they occurred most often during dose escalation of tirzepatide in the first 24 weeks on treatment.
The GIP receptor agonist effect of tirzepatide may diminish the nausea experienced by patients as a result of the drug’s GLP-1 receptor agonist action, Dr. Eriksson, designated discussant for the SURPASS trials, said during a session Sept. 30 at the virtual annual meeting of the European Association for the Study of Diabetes (EASD).
Clinically significant or severe hypoglycemia occurred in 8% of all patients on tirzepatide, with no apparent dose relationship, about half the rate of the patients treated with insulin glargine. Notably, the hypoglycemia episodes among patients treated with tirzepatide clustered almost entirely in the subgroup of patients who also took a sulfonylurea agent during the study. (SURPASS-4 allowed enrolled patients to be on their background antidiabetes regimen throughout the study, and at baseline 95% were taking metformin, 54% were on a sulfonylurea, and about a quarter were on a sodium-glucose cotransporter-2 inhibitor.)
“I would advise not using tirzepatide with insulin or with a sulfonylurea,” Dr. Eriksson said. Aside from this risk for hypoglycemia when tirzepatide is used concurrently with certain other antidiabetes drugs, the SURPASS trials have shown “no other important safety signals,” Dr. Eriksson added.
Cardiovascular safety
All enrolled patients had either known coronary, cerebrovascular, or peripheral arterial disease or were at high risk for having one or more of these conditions because they were at least 50 years old with a history of either chronic kidney disease with depressed glomerular filtration or heart failure.
During complete follow-up, the composite rate of cardiovascular death, MI, stroke, or hospitalization for unstable angina was numerically less in the patients who received tirzepatide, 5%, than in those on insulin glargine, 6%, a 26% relative risk reduction that did not achieve significance. The rate of total mortality was 3% in the tirzepatide group and 4% among those on glargine, a 30% relative risk reduction that was not significant.
The cardiovascular disease outcomes “suggest that tirzepatide is safe from a cardiovascular perspective,” Dr. Del Prato said when he presented the SURPASS-4 results during the virtual annual meeting of the EASD. However, a much larger cardiovascular outcomes trial of tirzepatide, SURPASS-CVOT, with more than 12,000 randomized patients and using a GLP-1 receptor agonist as the comparator, is now in progress, with a report on the findings expected in 2025.
Overall, results from all five SURPASS trials of tirzepatide have shown that the drug is “effective and safe in people with type 2 diabetes, providing stringent glycemic control and additional metabolic benefits including weight reduction and an improvement in other cardiometabolic markers,” said Melanie J. Davies, MD, professor of diabetes medicine at the University of Leicester, England.
Looking forward to when tirzepatide will be available for routine use, Dr. Eriksson positioned it near-term as part of a dual or triple regimen, especially for patients with type 2 diabetes who are obese or have uncontrolled hyperglycemia, renal impairment, high cardiovascular disease risk, or high risk for clinically significant or severe hypoglycemia.
A role for tirzepatide as a first-line agent is currently “more speculative,” he added, with more data needed on cardiovascular outcomes, long-term safety, and cost effectiveness.
The existing evidence base for tirzepatide shows “very promising efficacy” for weight loss and glucose lowering with “reassuring safety and tolerability,” and is a “very important addition to current options,” although the long-term safety of chronic tirzepatide treatment remains unproven, he said.
Dr. Eriksson called the drug’s glycemic control “strong and durable” based on the entire SURPASS program, with a “major” weight loss effect. He also suggested that while the adverse effect profile of tirzepatide appears similar to the GLP-1 receptor agonists, the incidence of gastrointestinal adverse events may be lower with tirzepatide.
SURPASS-4 and the other SURPASS trials were funded by Lilly, the company developing tirzepatide. Dr. Del Prato has ties with Lilly, Applied Therapeutics, AstraZeneca, Boehringer Ingelheim, Merck Sharpe and Dohme, Novartis, Novo Nordisk, and Sanofi. Dr. Davies has ties with Lilly, AstraZeneca, Boehringer Ingelheim, Janssen, Merck Sharp & Dohme, Novo Nordisk, Sanofi-Aventis, Servier, Gilead Sciences, Napp Pharmaceuticals, Mitsubishi Tanabe, and Takeda. Dr. Eriksson has ties with AstraZeneca, Ilya Pharma, Merck Sharp & Dohme, and Novo Nordisk.
, which compared the investigational agent to insulin glargine for treatment of type 2 diabetes. The study comprised 1,995 randomized patients with inadequately controlled type 2 diabetes and high cardiovascular disease risk.
Positive results for tirzepatide from SURPASS-4, the fifth and final registration trial for the drug, as well as in the other four studies, tee up the agent for a planned approval submission to the Food and Drug Administration by the end of 2021.
SURPASS-4 differed from the four other pivotal trials not only in its comparator agent, but also by being the longest of the five and the only one that, by design, enrolled exclusively patients with either established cardiovascular disease or high risk for the disease.
The new results “provide initial support for glycemic control [by tirzepatide] being sustained for more than 1 year,” wrote Stefano Del Prato, MD, and associates in their published report in The Lancet.
Despite the trial’s primary endpoint of change in hemoglobin A1c after 52 weeks on treatment, the study continued for another year and had a median time on treatment of 85 weeks, with 7% of enrolled patients remaining on treatment for the maximum on-treatment follow-up of 104 weeks.
Potent glycemic control
The primary endpoint showed that treatment with tirzepatide produced an average incremental reduction in A1c of 0.99% among 328 patients treated with a 10 mg weekly subcutaneous dosage compared with the 1,000 patients who received insulin glargine (Basaglar, Lantus, Toujeo), and an average 1.14% incremental reduction in A1c among 338 patients on a 15-mg dosage once weekly, reported Dr. Del Prato, professor and chief of the section of diabetes at the University of Pisa (Italy).
This met the prespecified criteria for noninferiority of tirzepatide to insulin glargine for reduction of A1c, the study’s primary objective, and also met the study’s prespecified definition of superiority, both statistically significant results. The study also tested a weekly tirzepatide dosage of 5 mg that was significantly superior to insulin glargine for glycemic control.
“The magnitude of A1c reduction and the proportions of patients reaching glycemic targets appear to be larger than in similar studies in which GLP-1 [glucagon-like peptide–1] receptor agonists have been compared with glargine,” the investigators wrote in their report.
The A1c effect of tirzepatide seen across all five SURPASS trials “surpasses what we’ve seen with other [glycemia control] drugs, with the possible exception of insulin,” said Jan W. Eriksson, MD, PhD, professor of clinical diabetes and metabolism at Uppsala (Sweden) University.
The results also showed several other clinically meaningful benefits from tirzepatide treatment. A composite outcome of reduction of A1c to less than 7% with no weight gain and no clinically significant documented symptomatic or severe hypoglycemia occurred in 74%-88% of patients in the three tirzepatide arms compared with 13% of patients treated with insulin glargine. After 52 weeks on treatment, body weight fell by an average of 8%, 11%, and 13% from baseline in the three tirzepatide treatment arms in a dose-dependent way, while weight rose by an average of 2% among those who received insulin glargine. Weight reduction of at least 10% occurred in 36%-66% of patients treated with tirzepatide, compared with 2% on treatment with insulin glargine.
SURPASS-4 was not run as a blinded study because of differences in administration of the comparator agents.
Safety appears similar to GLP-1 receptor agonists
The safety profile of tirzepatide in SURPASS-4, as it was in all of the other four trials in the SURPASS series, was consistent with previously reported safety of agents in the GLP-1 receptor agonist class, said Dr. Del Prato. It was an expected finding as tirzepatide combines activity as a GLP-1 receptor agonist with activity as a glucose-dependent insulinotropic polypeptide (GIP) receptor agonist in a single molecule.
The most common adverse effects were gastrointestinal, including diarrhea, nausea, decreased appetite, and vomiting. Most of these effects were mild or moderate, and they occurred most often during dose escalation of tirzepatide in the first 24 weeks on treatment.
The GIP receptor agonist effect of tirzepatide may diminish the nausea experienced by patients as a result of the drug’s GLP-1 receptor agonist action, Dr. Eriksson, designated discussant for the SURPASS trials, said during a session Sept. 30 at the virtual annual meeting of the European Association for the Study of Diabetes (EASD).
Clinically significant or severe hypoglycemia occurred in 8% of all patients on tirzepatide, with no apparent dose relationship, about half the rate of the patients treated with insulin glargine. Notably, the hypoglycemia episodes among patients treated with tirzepatide clustered almost entirely in the subgroup of patients who also took a sulfonylurea agent during the study. (SURPASS-4 allowed enrolled patients to be on their background antidiabetes regimen throughout the study, and at baseline 95% were taking metformin, 54% were on a sulfonylurea, and about a quarter were on a sodium-glucose cotransporter-2 inhibitor.)
“I would advise not using tirzepatide with insulin or with a sulfonylurea,” Dr. Eriksson said. Aside from this risk for hypoglycemia when tirzepatide is used concurrently with certain other antidiabetes drugs, the SURPASS trials have shown “no other important safety signals,” Dr. Eriksson added.
Cardiovascular safety
All enrolled patients had either known coronary, cerebrovascular, or peripheral arterial disease or were at high risk for having one or more of these conditions because they were at least 50 years old with a history of either chronic kidney disease with depressed glomerular filtration or heart failure.
During complete follow-up, the composite rate of cardiovascular death, MI, stroke, or hospitalization for unstable angina was numerically less in the patients who received tirzepatide, 5%, than in those on insulin glargine, 6%, a 26% relative risk reduction that did not achieve significance. The rate of total mortality was 3% in the tirzepatide group and 4% among those on glargine, a 30% relative risk reduction that was not significant.
The cardiovascular disease outcomes “suggest that tirzepatide is safe from a cardiovascular perspective,” Dr. Del Prato said when he presented the SURPASS-4 results during the virtual annual meeting of the EASD. However, a much larger cardiovascular outcomes trial of tirzepatide, SURPASS-CVOT, with more than 12,000 randomized patients and using a GLP-1 receptor agonist as the comparator, is now in progress, with a report on the findings expected in 2025.
Overall, results from all five SURPASS trials of tirzepatide have shown that the drug is “effective and safe in people with type 2 diabetes, providing stringent glycemic control and additional metabolic benefits including weight reduction and an improvement in other cardiometabolic markers,” said Melanie J. Davies, MD, professor of diabetes medicine at the University of Leicester, England.
Looking forward to when tirzepatide will be available for routine use, Dr. Eriksson positioned it near-term as part of a dual or triple regimen, especially for patients with type 2 diabetes who are obese or have uncontrolled hyperglycemia, renal impairment, high cardiovascular disease risk, or high risk for clinically significant or severe hypoglycemia.
A role for tirzepatide as a first-line agent is currently “more speculative,” he added, with more data needed on cardiovascular outcomes, long-term safety, and cost effectiveness.
The existing evidence base for tirzepatide shows “very promising efficacy” for weight loss and glucose lowering with “reassuring safety and tolerability,” and is a “very important addition to current options,” although the long-term safety of chronic tirzepatide treatment remains unproven, he said.
Dr. Eriksson called the drug’s glycemic control “strong and durable” based on the entire SURPASS program, with a “major” weight loss effect. He also suggested that while the adverse effect profile of tirzepatide appears similar to the GLP-1 receptor agonists, the incidence of gastrointestinal adverse events may be lower with tirzepatide.
SURPASS-4 and the other SURPASS trials were funded by Lilly, the company developing tirzepatide. Dr. Del Prato has ties with Lilly, Applied Therapeutics, AstraZeneca, Boehringer Ingelheim, Merck Sharpe and Dohme, Novartis, Novo Nordisk, and Sanofi. Dr. Davies has ties with Lilly, AstraZeneca, Boehringer Ingelheim, Janssen, Merck Sharp & Dohme, Novo Nordisk, Sanofi-Aventis, Servier, Gilead Sciences, Napp Pharmaceuticals, Mitsubishi Tanabe, and Takeda. Dr. Eriksson has ties with AstraZeneca, Ilya Pharma, Merck Sharp & Dohme, and Novo Nordisk.
, which compared the investigational agent to insulin glargine for treatment of type 2 diabetes. The study comprised 1,995 randomized patients with inadequately controlled type 2 diabetes and high cardiovascular disease risk.
Positive results for tirzepatide from SURPASS-4, the fifth and final registration trial for the drug, as well as in the other four studies, tee up the agent for a planned approval submission to the Food and Drug Administration by the end of 2021.
SURPASS-4 differed from the four other pivotal trials not only in its comparator agent, but also by being the longest of the five and the only one that, by design, enrolled exclusively patients with either established cardiovascular disease or high risk for the disease.
The new results “provide initial support for glycemic control [by tirzepatide] being sustained for more than 1 year,” wrote Stefano Del Prato, MD, and associates in their published report in The Lancet.
Despite the trial’s primary endpoint of change in hemoglobin A1c after 52 weeks on treatment, the study continued for another year and had a median time on treatment of 85 weeks, with 7% of enrolled patients remaining on treatment for the maximum on-treatment follow-up of 104 weeks.
Potent glycemic control
The primary endpoint showed that treatment with tirzepatide produced an average incremental reduction in A1c of 0.99% among 328 patients treated with a 10 mg weekly subcutaneous dosage compared with the 1,000 patients who received insulin glargine (Basaglar, Lantus, Toujeo), and an average 1.14% incremental reduction in A1c among 338 patients on a 15-mg dosage once weekly, reported Dr. Del Prato, professor and chief of the section of diabetes at the University of Pisa (Italy).
This met the prespecified criteria for noninferiority of tirzepatide to insulin glargine for reduction of A1c, the study’s primary objective, and also met the study’s prespecified definition of superiority, both statistically significant results. The study also tested a weekly tirzepatide dosage of 5 mg that was significantly superior to insulin glargine for glycemic control.
“The magnitude of A1c reduction and the proportions of patients reaching glycemic targets appear to be larger than in similar studies in which GLP-1 [glucagon-like peptide–1] receptor agonists have been compared with glargine,” the investigators wrote in their report.
The A1c effect of tirzepatide seen across all five SURPASS trials “surpasses what we’ve seen with other [glycemia control] drugs, with the possible exception of insulin,” said Jan W. Eriksson, MD, PhD, professor of clinical diabetes and metabolism at Uppsala (Sweden) University.
The results also showed several other clinically meaningful benefits from tirzepatide treatment. A composite outcome of reduction of A1c to less than 7% with no weight gain and no clinically significant documented symptomatic or severe hypoglycemia occurred in 74%-88% of patients in the three tirzepatide arms compared with 13% of patients treated with insulin glargine. After 52 weeks on treatment, body weight fell by an average of 8%, 11%, and 13% from baseline in the three tirzepatide treatment arms in a dose-dependent way, while weight rose by an average of 2% among those who received insulin glargine. Weight reduction of at least 10% occurred in 36%-66% of patients treated with tirzepatide, compared with 2% on treatment with insulin glargine.
SURPASS-4 was not run as a blinded study because of differences in administration of the comparator agents.
Safety appears similar to GLP-1 receptor agonists
The safety profile of tirzepatide in SURPASS-4, as it was in all of the other four trials in the SURPASS series, was consistent with previously reported safety of agents in the GLP-1 receptor agonist class, said Dr. Del Prato. It was an expected finding as tirzepatide combines activity as a GLP-1 receptor agonist with activity as a glucose-dependent insulinotropic polypeptide (GIP) receptor agonist in a single molecule.
The most common adverse effects were gastrointestinal, including diarrhea, nausea, decreased appetite, and vomiting. Most of these effects were mild or moderate, and they occurred most often during dose escalation of tirzepatide in the first 24 weeks on treatment.
The GIP receptor agonist effect of tirzepatide may diminish the nausea experienced by patients as a result of the drug’s GLP-1 receptor agonist action, Dr. Eriksson, designated discussant for the SURPASS trials, said during a session Sept. 30 at the virtual annual meeting of the European Association for the Study of Diabetes (EASD).
Clinically significant or severe hypoglycemia occurred in 8% of all patients on tirzepatide, with no apparent dose relationship, about half the rate of the patients treated with insulin glargine. Notably, the hypoglycemia episodes among patients treated with tirzepatide clustered almost entirely in the subgroup of patients who also took a sulfonylurea agent during the study. (SURPASS-4 allowed enrolled patients to be on their background antidiabetes regimen throughout the study, and at baseline 95% were taking metformin, 54% were on a sulfonylurea, and about a quarter were on a sodium-glucose cotransporter-2 inhibitor.)
“I would advise not using tirzepatide with insulin or with a sulfonylurea,” Dr. Eriksson said. Aside from this risk for hypoglycemia when tirzepatide is used concurrently with certain other antidiabetes drugs, the SURPASS trials have shown “no other important safety signals,” Dr. Eriksson added.
Cardiovascular safety
All enrolled patients had either known coronary, cerebrovascular, or peripheral arterial disease or were at high risk for having one or more of these conditions because they were at least 50 years old with a history of either chronic kidney disease with depressed glomerular filtration or heart failure.
During complete follow-up, the composite rate of cardiovascular death, MI, stroke, or hospitalization for unstable angina was numerically less in the patients who received tirzepatide, 5%, than in those on insulin glargine, 6%, a 26% relative risk reduction that did not achieve significance. The rate of total mortality was 3% in the tirzepatide group and 4% among those on glargine, a 30% relative risk reduction that was not significant.
The cardiovascular disease outcomes “suggest that tirzepatide is safe from a cardiovascular perspective,” Dr. Del Prato said when he presented the SURPASS-4 results during the virtual annual meeting of the EASD. However, a much larger cardiovascular outcomes trial of tirzepatide, SURPASS-CVOT, with more than 12,000 randomized patients and using a GLP-1 receptor agonist as the comparator, is now in progress, with a report on the findings expected in 2025.
Overall, results from all five SURPASS trials of tirzepatide have shown that the drug is “effective and safe in people with type 2 diabetes, providing stringent glycemic control and additional metabolic benefits including weight reduction and an improvement in other cardiometabolic markers,” said Melanie J. Davies, MD, professor of diabetes medicine at the University of Leicester, England.
Looking forward to when tirzepatide will be available for routine use, Dr. Eriksson positioned it near-term as part of a dual or triple regimen, especially for patients with type 2 diabetes who are obese or have uncontrolled hyperglycemia, renal impairment, high cardiovascular disease risk, or high risk for clinically significant or severe hypoglycemia.
A role for tirzepatide as a first-line agent is currently “more speculative,” he added, with more data needed on cardiovascular outcomes, long-term safety, and cost effectiveness.
The existing evidence base for tirzepatide shows “very promising efficacy” for weight loss and glucose lowering with “reassuring safety and tolerability,” and is a “very important addition to current options,” although the long-term safety of chronic tirzepatide treatment remains unproven, he said.
Dr. Eriksson called the drug’s glycemic control “strong and durable” based on the entire SURPASS program, with a “major” weight loss effect. He also suggested that while the adverse effect profile of tirzepatide appears similar to the GLP-1 receptor agonists, the incidence of gastrointestinal adverse events may be lower with tirzepatide.
SURPASS-4 and the other SURPASS trials were funded by Lilly, the company developing tirzepatide. Dr. Del Prato has ties with Lilly, Applied Therapeutics, AstraZeneca, Boehringer Ingelheim, Merck Sharpe and Dohme, Novartis, Novo Nordisk, and Sanofi. Dr. Davies has ties with Lilly, AstraZeneca, Boehringer Ingelheim, Janssen, Merck Sharp & Dohme, Novo Nordisk, Sanofi-Aventis, Servier, Gilead Sciences, Napp Pharmaceuticals, Mitsubishi Tanabe, and Takeda. Dr. Eriksson has ties with AstraZeneca, Ilya Pharma, Merck Sharp & Dohme, and Novo Nordisk.
FROM THE LANCET
Researchers parse which patients with T2D need SGLT2 inhibition
Agents that form the sodium-glucose cotransporter 2 inhibitor class – including canagliflozin (Invokana), dapagliflozin (Farxiga), and empagliflozin (Jardiance) – have show remarkably consistent cardiovascular efficacy and safety for treating patients with heart failure, chronic kidney disease, and higher-risk patients with type 2 diabetes.
But despite an essential role now established for drugs in the SGLT2 inhibitor class for patients with heart failure with reduced ejection fraction, progressive renal dysfunction, or – most recently – patients with heart failure with preserved ejection fraction, the scope may be less clear when using these agents in patients with type 2 diabetes because they fall across a broad spectrum of risk for cardiorenal disease.
“What makes patients with type 2 diabetes distinct from other patients in whom SGLT2 inhibitors have been studied, such as patients with heart failure, is that they have a much wider spectrum of risk. Low-risk patients with type 2 diabetes were not included in the SGLT2 inhibitor trials. Defining risk in patients with type 2 diabetes has the potential to inform prioritization” for treatment with an SGLT2 inhibitor, explained David D. Berg, MD, who has led one effort to develop risk scores that can risk-stratify patients with type 2 diabetes based on their vulnerability to incident heart failure and hospitalization for these episodes,
The hefty cost for these drugs, with retail prices that run over $6,000 annually for the most widely used and most potent agents in the class, has spurred researchers to try to find cost-effective ways to identify patients with type 2 diabetes who stand to benefit most from taking an SGLT2 inhibitor.
‘Cost must be considered’
“Cost must be considered, and at this point it’s probably more responsible on a societal level to advise using SGLT2 inhibitors mainly in patients [with type 2 diabetes] with compelling indications,” said Silvio Inzucchi, MD, professor and director of the Yale Medicine Diabetes Center in New Haven, Conn. Dr. Inzucchi added, however, that “I can easily foresee a day when these agents are considered foundational therapy for all patients with type 2 diabetes, after they go generic and cost is not a major issue. I’m starting to lean toward this very simplified approach, but the costs are prohibitive at this time.”
“If the SGLT2 inhibitors were available at a low cost, I’d argue that they should be used in all patients with type 2 diabetes who have no contraindications or tolerability issues; but we live in a world where they are not yet low cost,” agreed Mikhail N. Kosiborod, MD, a cardiologist and codirector of the Cardiometabolic Center of Excellence at Saint Luke’s Mid-America Heart Institute in Kansas City, Mo.
“We can’t give SGLT2 inhibitors to everyone with type 2 diabetes right now because that would be too costly; these agents are so expensive. You start by targeting the patients with the highest risk” for incident heart failure, said Ambarish Pandey, MD, a cardiologist at the University of Texas Southwestern Medical Center, Dallas.
The spotlight the SGLT2 inhibitor class has received, based on its unexpectedly potent efficacy in cutting rates of acute heart failure episodes in patients with type 2 diabetes, has also sharply raised the profile of this complication of type 2 diabetes, an outcome that until recently many clinicians had largely ignored, overshadowed by a focus on adverse outcomes from atherosclerotic cardiovascular disease such as MIs and strokes.
“Results from the SGLT2 inhibitor trials have reignited interest in the relationship between type 2 diabetes and heart failure and have started to shift the mindset of clinicians toward thinking about reducing both atherothrombotic risk and heart failure risk in patients with type 2 diabetes,” said Dr. Berg, a cardiologist at Brigham and Women’s Hospital in Boston.
“Prior to the SGLT2 inhibitor trials, heart failure was on the radar of diabetes clinicians only as something to watch for as a potential side effect of certain glucose-lowering therapies. Now that there are therapies that can lower heart failure hospitalization, it’s made us think more about heart failure, how common it is in patients with type 2 diabetes, and what can we do to lower this risk,” commented Alice Y.Y. Cheng, MD, a diabetes specialist at the University of Toronto.
Banking on biomarkers
Risk scores for assessing the likelihood of people developing incident heart failure date back more than a decade. More recent efforts have focused on patients with type 2 diabetes, starting with scores that relied entirely on clinical markers of risk such as prior heart failure, established coronary artery disease, and chronic kidney disease. Reports of two of these validated scores appeared in 2019, one from a team led by Dr. Berg and associates in 2019, and a second score developed by Dr. Pandey and associates.
More recently, both research teams behind these two scores validated newer versions that further refined assessment of patients with diabetes by including biomarkers of incipient heart failure, such as N-terminal of the prohormone brain natriuretic peptide (NT-proBNP). The UT Southwestern group’s biomarker-based score relies on levels of NT-proBNP as well as on levels of high sensitivity troponin T (hsTnT) and C-reactive protein, plus ECG-based assessment of left ventricular hypertrophy to assess risk for incident heart failure. Developers reported in 2021 that this biomarker score could account for 74% (C-statistic) of the 5-year risk for heart failure among patients with diabetes.
The biomarker-based score devised by Dr. Berg and associates, relies on NT-proBNP, hsTnT, and a history of heart failure to predict the risk for a future hospitalization for heart failure. They reported in Diabetes Care that in validation testing this score accounted for 84% of the risk.
“I’m hopeful that both our original clinically-based risk score and our new biomarker-based score will be endorsed by professional society guidelines. The intent of the biomarker-based score is not to replace the clinical one,” Dr. Berg stressed in an interview. But he acknowledged that it uses biomarker values that currently are not routinely collected in U.S. practice. Biomarkers like NT-proBNP “are highly associated with future heart failure risk, but are not yet routinely assessed,” he said. Because of this, “widespread adoption of the [biomarker] risk tool will require some education.”
It may also require some sort of preliminary screening to determine the appropriateness of using it in a specific patient because of the relative expense of a test for NT-proBNP.
A Texas two-step process
“We can’t perform a [NT-proBNP] test on every patient with type 2 diabetes because cost is a huge barrier,” with a U.K. price of roughly £28 (about $40) per test, commented Naveed Sattar, MD, PhD, professor of metabolic medicine at the University of Glasgow. “NT-proBNP is the best biomarker by far to predict risk” for heart failure,” but “it’s too expensive. It’s not going to happen in everyone,” he said in an interview. He suggested taking a two-step approach to identify patients to test for NT-proBNP based on clinical measures like blood pressure, weight and height, lipid levels and renal function and the presence of suggestive symptoms like dyspnea, fatigue, and peripheral edema, an argument he recently spelled out in detail in an editorial he coauthored.
“More work is needed to define which patients would usefully have cardiac biomarkers measured,” Dr. Sattar wrote with his associate.
Two-step is the approach used in routine practice by clinicians at UT Southwestern Medical Center. “We screen all patients with type 2 diabetes and no diagnosed heart failure who are not already on an SGLT2 inhibitor” using their 2019 screening tool, called the WATCH-DM Risk score, said Dr. Pandey. Patients flagged at high risk by their clinical score receive an SGLT2 inhibitor (presuming no contraindications). The remaining patients with low or intermediate risk may then undergo biomarker-based assessment to find additional patients who warrant SGLT2 inhibitor treatment, he said in an interview.
Often, a record of the most important biomarker, NT-proBNP, is already in the patient’s record and less than a year old, in which case clinicians use that value. An NT-proBNP level of at least 125 pg/mL indicates increased risk in people with a body mass index of less than 30 kg/m2, while for those with higher body mass indexes clinicians at Southwestern apply a threshold for higher risk of at least 100 pg/mL.
In addition to starting those patients on an SGLT2 inhibitor, the Southwestern protocol calls for intensified efforts at weight loss and improved fitness to further lower incident heart failure risk, and they are also considering targeting treatment with a glucagonlike peptide–1 receptor agonist to these patients as well. They have a research protocol in place, called WATCH-DM, that will prospectively assess the efficacy of this strategy.
Despite the cost, others also believe that the time is right for biomarker-based tests to boost access to the benefits that treatment with SGLT2 inhibitors can give patients with type 2 diabetes.
“In theory it’s reasonable” to use a risk score like the recent one reported by Dr. Berg and coauthors, said Vanita R. Aroda, MD, an endocrinologist and director of diabetes clinical research at Brigham and Women’s Hospital in Boston. “We need to pay attention to heart failure as an outcome and use risk stratification” to decide which patients with type 2 diabetes but without established cardiovascular disease warrant treatment with an SGLT2 inhibitor, she said in an interview. “Given the data, we need more concrete recommendations” from medical societies on how to reasonably use biomarkers and imaging to identify patients with type 2 diabetes who are at increased risk for heart failure and hence would benefit from treatment. “This should be of high interest to guidelines committees,” she added.
The earlier version of Dr. Berg’s score, based exclusively on clinical observations and conventional measures like estimated glomerular filtration rate and urinary creatinine to albumin ratio, had overlap with established criteria for starting treatment with an SGLT2 inhibitor, such as the presence of chronic kidney disease, she noted. “A biomarker-based score may provide the additional level of discrimination needed to characterize risk and potential benefit.”
Asymptomatic diabetic cardiomyopathy
Dr. Aroda and several coauthors recently published a review that describes a subset of patients with type 2 diabetes who might get picked up by intensified screening for heart failure risk: those with asymptomatic diabetic cardiomyopathy, a clinical state that they said represents patients with stage B heart failure based on the new Universal Definition and Classification of Heart Failure. Until recently, these patients with type 2 diabetes and asymptomatic cardiomyopathy have mostly gone unrecognized.
A recent report from Dr. Pandey and associates reviewed records from 2,900 U.S. patients with diabetes and no symptoms who had been included in any of three cohort studies and found echocardiographic evidence of early-stage cardiomyopathy in as many as two-thirds. In an editorial about this report, Dr. Aroda and coauthors called these patients a potential “window of opportunity for prevention and treatment of heart failure.”
“There is evidence of structural cardiac changes that progress through the stages of heart failure,” and starting treatment with an SGLT2 inhibitor during an earlier stage can potentially slow or prevent this progression and thereby limit future functional decline, Dr. Aroda said.
Dr. Sattar agreed. Type 2 diabetes appears to help cause “fluid derangements” and abnormal hemodynamics that produces cardiac stress, changes in heart structure, and adverse remodeling of the heart, a process that “some call cardiomyopathy,” which is exacerbated by other pathologic forces that are also often present in these patients such as obesity and hypertension. SGLT2 inhibitors can help these patients by producing “reverse remodeling of the heart.”
“This process was neglected because for many years our focus was on ischemic heart disease in patients with type 2 diabetes. It was there in plain sight, but we were missing it,” explained Dr. Sattar. Having agents from the SGLT2 inhibitor class “has allowed us to better understand this mechanism.”
The SGLT2 inhibitors are “absolutely the driving reason” why the diabetes–heart failure link has become so important, said Dr. Inzucchi. Having drugs that reduce heart failure risk provided clinicians with a tool that has “changed our mindset.”
“Heart failure prevention has been largely neglected in patients with type 2 diabetes. Reprioritizing heart failure prevention to first and foremost among patients with type 2 diabetes is long overdue,” commented Gregg C. Fonarow, MD, professor and chief of cardiology at the University of California, Los Angeles.
Clinicians don’t like risk scores
Will systematic screening for heart failure risk in selected patients with type 2 diabetes take hold, and with it expanded and better-targeted use of SGLT2 inhibitors?
“I hope so,” said Dr. Kosiborod, but one challenge is that “for the most part clinicians don’t like using risk scores.” Only a few have ever been widely incorporated into practice; mostly they become tools for research. Plus, SGLT2 inhibitor uptake has in general been slow to catch on, which Dr. Kosiborod blames primarily on clinical inertia, a pervasive issue that has also hampered optimal use of drugs as commonplace as statins, ACE inhibitors, and angiotensin-receptor blockers.
“Given the avalanche of positive data, uptake of SGLT2 inhibitors will continue to improve and accelerate; but unfortunately, unless something dramatic happens we’ll likely see their continued underuse for several more years,” he predicted. “Designing better systems of care that prioritize prevention are absolutely needed to improve implementation of effective therapies, including SGLT2 inhibitors.”
Despite their underuse the SGLT2 inhibitor class has, in just 6 years since results from the EMPA-REG OUTCOME trial came out and launched the current treatment era, transformed thinking about the risk that heart failure poses to patients with type 2 diabetes and the need to manage this risk.
“I thank the SGLT2 inhibitors for raising awareness of heart failure risk in patients with diabetes,” and for giving clinicians a new way to mitigate this risk, said Dr. Cheng.
Dr. Berg has been a consultant to AstraZeneca, and received research grant support to his institution from AstraZeneca and Pfizer. Dr. Cheng has received personal fees from multiple pharmaceutical companies. Dr. Kosiborod has been an adviser and consultant to multiple pharmaceutical companies; has received research grants from AstraZeneca and Boehringer Ingelheim; and has received other research support from AstraZeneca. Dr. Pandey has been an adviser to Roche Diagnostics; has received nonfinancial support from Pfizer and Merck; and has received research support from Gilead Sciences, Myovista, and Applied Therapeutics. Dr. Sattar has received consulting honoraria from multiple pharmaceutical companies, and has received grant support from Boehringer Ingelheim, Roche Diagnostics, and Novartis. Dr. Aroda has been a consultant for several pharmaceutical companies; has a spouse employed with Janssen; and has received research support (institutional contracts) from multiple pharmaceutical companies. Dr. Fonarow has been a consultant to several pharmaceutical companies.
Agents that form the sodium-glucose cotransporter 2 inhibitor class – including canagliflozin (Invokana), dapagliflozin (Farxiga), and empagliflozin (Jardiance) – have show remarkably consistent cardiovascular efficacy and safety for treating patients with heart failure, chronic kidney disease, and higher-risk patients with type 2 diabetes.
But despite an essential role now established for drugs in the SGLT2 inhibitor class for patients with heart failure with reduced ejection fraction, progressive renal dysfunction, or – most recently – patients with heart failure with preserved ejection fraction, the scope may be less clear when using these agents in patients with type 2 diabetes because they fall across a broad spectrum of risk for cardiorenal disease.
“What makes patients with type 2 diabetes distinct from other patients in whom SGLT2 inhibitors have been studied, such as patients with heart failure, is that they have a much wider spectrum of risk. Low-risk patients with type 2 diabetes were not included in the SGLT2 inhibitor trials. Defining risk in patients with type 2 diabetes has the potential to inform prioritization” for treatment with an SGLT2 inhibitor, explained David D. Berg, MD, who has led one effort to develop risk scores that can risk-stratify patients with type 2 diabetes based on their vulnerability to incident heart failure and hospitalization for these episodes,
The hefty cost for these drugs, with retail prices that run over $6,000 annually for the most widely used and most potent agents in the class, has spurred researchers to try to find cost-effective ways to identify patients with type 2 diabetes who stand to benefit most from taking an SGLT2 inhibitor.
‘Cost must be considered’
“Cost must be considered, and at this point it’s probably more responsible on a societal level to advise using SGLT2 inhibitors mainly in patients [with type 2 diabetes] with compelling indications,” said Silvio Inzucchi, MD, professor and director of the Yale Medicine Diabetes Center in New Haven, Conn. Dr. Inzucchi added, however, that “I can easily foresee a day when these agents are considered foundational therapy for all patients with type 2 diabetes, after they go generic and cost is not a major issue. I’m starting to lean toward this very simplified approach, but the costs are prohibitive at this time.”
“If the SGLT2 inhibitors were available at a low cost, I’d argue that they should be used in all patients with type 2 diabetes who have no contraindications or tolerability issues; but we live in a world where they are not yet low cost,” agreed Mikhail N. Kosiborod, MD, a cardiologist and codirector of the Cardiometabolic Center of Excellence at Saint Luke’s Mid-America Heart Institute in Kansas City, Mo.
“We can’t give SGLT2 inhibitors to everyone with type 2 diabetes right now because that would be too costly; these agents are so expensive. You start by targeting the patients with the highest risk” for incident heart failure, said Ambarish Pandey, MD, a cardiologist at the University of Texas Southwestern Medical Center, Dallas.
The spotlight the SGLT2 inhibitor class has received, based on its unexpectedly potent efficacy in cutting rates of acute heart failure episodes in patients with type 2 diabetes, has also sharply raised the profile of this complication of type 2 diabetes, an outcome that until recently many clinicians had largely ignored, overshadowed by a focus on adverse outcomes from atherosclerotic cardiovascular disease such as MIs and strokes.
“Results from the SGLT2 inhibitor trials have reignited interest in the relationship between type 2 diabetes and heart failure and have started to shift the mindset of clinicians toward thinking about reducing both atherothrombotic risk and heart failure risk in patients with type 2 diabetes,” said Dr. Berg, a cardiologist at Brigham and Women’s Hospital in Boston.
“Prior to the SGLT2 inhibitor trials, heart failure was on the radar of diabetes clinicians only as something to watch for as a potential side effect of certain glucose-lowering therapies. Now that there are therapies that can lower heart failure hospitalization, it’s made us think more about heart failure, how common it is in patients with type 2 diabetes, and what can we do to lower this risk,” commented Alice Y.Y. Cheng, MD, a diabetes specialist at the University of Toronto.
Banking on biomarkers
Risk scores for assessing the likelihood of people developing incident heart failure date back more than a decade. More recent efforts have focused on patients with type 2 diabetes, starting with scores that relied entirely on clinical markers of risk such as prior heart failure, established coronary artery disease, and chronic kidney disease. Reports of two of these validated scores appeared in 2019, one from a team led by Dr. Berg and associates in 2019, and a second score developed by Dr. Pandey and associates.
More recently, both research teams behind these two scores validated newer versions that further refined assessment of patients with diabetes by including biomarkers of incipient heart failure, such as N-terminal of the prohormone brain natriuretic peptide (NT-proBNP). The UT Southwestern group’s biomarker-based score relies on levels of NT-proBNP as well as on levels of high sensitivity troponin T (hsTnT) and C-reactive protein, plus ECG-based assessment of left ventricular hypertrophy to assess risk for incident heart failure. Developers reported in 2021 that this biomarker score could account for 74% (C-statistic) of the 5-year risk for heart failure among patients with diabetes.
The biomarker-based score devised by Dr. Berg and associates, relies on NT-proBNP, hsTnT, and a history of heart failure to predict the risk for a future hospitalization for heart failure. They reported in Diabetes Care that in validation testing this score accounted for 84% of the risk.
“I’m hopeful that both our original clinically-based risk score and our new biomarker-based score will be endorsed by professional society guidelines. The intent of the biomarker-based score is not to replace the clinical one,” Dr. Berg stressed in an interview. But he acknowledged that it uses biomarker values that currently are not routinely collected in U.S. practice. Biomarkers like NT-proBNP “are highly associated with future heart failure risk, but are not yet routinely assessed,” he said. Because of this, “widespread adoption of the [biomarker] risk tool will require some education.”
It may also require some sort of preliminary screening to determine the appropriateness of using it in a specific patient because of the relative expense of a test for NT-proBNP.
A Texas two-step process
“We can’t perform a [NT-proBNP] test on every patient with type 2 diabetes because cost is a huge barrier,” with a U.K. price of roughly £28 (about $40) per test, commented Naveed Sattar, MD, PhD, professor of metabolic medicine at the University of Glasgow. “NT-proBNP is the best biomarker by far to predict risk” for heart failure,” but “it’s too expensive. It’s not going to happen in everyone,” he said in an interview. He suggested taking a two-step approach to identify patients to test for NT-proBNP based on clinical measures like blood pressure, weight and height, lipid levels and renal function and the presence of suggestive symptoms like dyspnea, fatigue, and peripheral edema, an argument he recently spelled out in detail in an editorial he coauthored.
“More work is needed to define which patients would usefully have cardiac biomarkers measured,” Dr. Sattar wrote with his associate.
Two-step is the approach used in routine practice by clinicians at UT Southwestern Medical Center. “We screen all patients with type 2 diabetes and no diagnosed heart failure who are not already on an SGLT2 inhibitor” using their 2019 screening tool, called the WATCH-DM Risk score, said Dr. Pandey. Patients flagged at high risk by their clinical score receive an SGLT2 inhibitor (presuming no contraindications). The remaining patients with low or intermediate risk may then undergo biomarker-based assessment to find additional patients who warrant SGLT2 inhibitor treatment, he said in an interview.
Often, a record of the most important biomarker, NT-proBNP, is already in the patient’s record and less than a year old, in which case clinicians use that value. An NT-proBNP level of at least 125 pg/mL indicates increased risk in people with a body mass index of less than 30 kg/m2, while for those with higher body mass indexes clinicians at Southwestern apply a threshold for higher risk of at least 100 pg/mL.
In addition to starting those patients on an SGLT2 inhibitor, the Southwestern protocol calls for intensified efforts at weight loss and improved fitness to further lower incident heart failure risk, and they are also considering targeting treatment with a glucagonlike peptide–1 receptor agonist to these patients as well. They have a research protocol in place, called WATCH-DM, that will prospectively assess the efficacy of this strategy.
Despite the cost, others also believe that the time is right for biomarker-based tests to boost access to the benefits that treatment with SGLT2 inhibitors can give patients with type 2 diabetes.
“In theory it’s reasonable” to use a risk score like the recent one reported by Dr. Berg and coauthors, said Vanita R. Aroda, MD, an endocrinologist and director of diabetes clinical research at Brigham and Women’s Hospital in Boston. “We need to pay attention to heart failure as an outcome and use risk stratification” to decide which patients with type 2 diabetes but without established cardiovascular disease warrant treatment with an SGLT2 inhibitor, she said in an interview. “Given the data, we need more concrete recommendations” from medical societies on how to reasonably use biomarkers and imaging to identify patients with type 2 diabetes who are at increased risk for heart failure and hence would benefit from treatment. “This should be of high interest to guidelines committees,” she added.
The earlier version of Dr. Berg’s score, based exclusively on clinical observations and conventional measures like estimated glomerular filtration rate and urinary creatinine to albumin ratio, had overlap with established criteria for starting treatment with an SGLT2 inhibitor, such as the presence of chronic kidney disease, she noted. “A biomarker-based score may provide the additional level of discrimination needed to characterize risk and potential benefit.”
Asymptomatic diabetic cardiomyopathy
Dr. Aroda and several coauthors recently published a review that describes a subset of patients with type 2 diabetes who might get picked up by intensified screening for heart failure risk: those with asymptomatic diabetic cardiomyopathy, a clinical state that they said represents patients with stage B heart failure based on the new Universal Definition and Classification of Heart Failure. Until recently, these patients with type 2 diabetes and asymptomatic cardiomyopathy have mostly gone unrecognized.
A recent report from Dr. Pandey and associates reviewed records from 2,900 U.S. patients with diabetes and no symptoms who had been included in any of three cohort studies and found echocardiographic evidence of early-stage cardiomyopathy in as many as two-thirds. In an editorial about this report, Dr. Aroda and coauthors called these patients a potential “window of opportunity for prevention and treatment of heart failure.”
“There is evidence of structural cardiac changes that progress through the stages of heart failure,” and starting treatment with an SGLT2 inhibitor during an earlier stage can potentially slow or prevent this progression and thereby limit future functional decline, Dr. Aroda said.
Dr. Sattar agreed. Type 2 diabetes appears to help cause “fluid derangements” and abnormal hemodynamics that produces cardiac stress, changes in heart structure, and adverse remodeling of the heart, a process that “some call cardiomyopathy,” which is exacerbated by other pathologic forces that are also often present in these patients such as obesity and hypertension. SGLT2 inhibitors can help these patients by producing “reverse remodeling of the heart.”
“This process was neglected because for many years our focus was on ischemic heart disease in patients with type 2 diabetes. It was there in plain sight, but we were missing it,” explained Dr. Sattar. Having agents from the SGLT2 inhibitor class “has allowed us to better understand this mechanism.”
The SGLT2 inhibitors are “absolutely the driving reason” why the diabetes–heart failure link has become so important, said Dr. Inzucchi. Having drugs that reduce heart failure risk provided clinicians with a tool that has “changed our mindset.”
“Heart failure prevention has been largely neglected in patients with type 2 diabetes. Reprioritizing heart failure prevention to first and foremost among patients with type 2 diabetes is long overdue,” commented Gregg C. Fonarow, MD, professor and chief of cardiology at the University of California, Los Angeles.
Clinicians don’t like risk scores
Will systematic screening for heart failure risk in selected patients with type 2 diabetes take hold, and with it expanded and better-targeted use of SGLT2 inhibitors?
“I hope so,” said Dr. Kosiborod, but one challenge is that “for the most part clinicians don’t like using risk scores.” Only a few have ever been widely incorporated into practice; mostly they become tools for research. Plus, SGLT2 inhibitor uptake has in general been slow to catch on, which Dr. Kosiborod blames primarily on clinical inertia, a pervasive issue that has also hampered optimal use of drugs as commonplace as statins, ACE inhibitors, and angiotensin-receptor blockers.
“Given the avalanche of positive data, uptake of SGLT2 inhibitors will continue to improve and accelerate; but unfortunately, unless something dramatic happens we’ll likely see their continued underuse for several more years,” he predicted. “Designing better systems of care that prioritize prevention are absolutely needed to improve implementation of effective therapies, including SGLT2 inhibitors.”
Despite their underuse the SGLT2 inhibitor class has, in just 6 years since results from the EMPA-REG OUTCOME trial came out and launched the current treatment era, transformed thinking about the risk that heart failure poses to patients with type 2 diabetes and the need to manage this risk.
“I thank the SGLT2 inhibitors for raising awareness of heart failure risk in patients with diabetes,” and for giving clinicians a new way to mitigate this risk, said Dr. Cheng.
Dr. Berg has been a consultant to AstraZeneca, and received research grant support to his institution from AstraZeneca and Pfizer. Dr. Cheng has received personal fees from multiple pharmaceutical companies. Dr. Kosiborod has been an adviser and consultant to multiple pharmaceutical companies; has received research grants from AstraZeneca and Boehringer Ingelheim; and has received other research support from AstraZeneca. Dr. Pandey has been an adviser to Roche Diagnostics; has received nonfinancial support from Pfizer and Merck; and has received research support from Gilead Sciences, Myovista, and Applied Therapeutics. Dr. Sattar has received consulting honoraria from multiple pharmaceutical companies, and has received grant support from Boehringer Ingelheim, Roche Diagnostics, and Novartis. Dr. Aroda has been a consultant for several pharmaceutical companies; has a spouse employed with Janssen; and has received research support (institutional contracts) from multiple pharmaceutical companies. Dr. Fonarow has been a consultant to several pharmaceutical companies.
Agents that form the sodium-glucose cotransporter 2 inhibitor class – including canagliflozin (Invokana), dapagliflozin (Farxiga), and empagliflozin (Jardiance) – have show remarkably consistent cardiovascular efficacy and safety for treating patients with heart failure, chronic kidney disease, and higher-risk patients with type 2 diabetes.
But despite an essential role now established for drugs in the SGLT2 inhibitor class for patients with heart failure with reduced ejection fraction, progressive renal dysfunction, or – most recently – patients with heart failure with preserved ejection fraction, the scope may be less clear when using these agents in patients with type 2 diabetes because they fall across a broad spectrum of risk for cardiorenal disease.
“What makes patients with type 2 diabetes distinct from other patients in whom SGLT2 inhibitors have been studied, such as patients with heart failure, is that they have a much wider spectrum of risk. Low-risk patients with type 2 diabetes were not included in the SGLT2 inhibitor trials. Defining risk in patients with type 2 diabetes has the potential to inform prioritization” for treatment with an SGLT2 inhibitor, explained David D. Berg, MD, who has led one effort to develop risk scores that can risk-stratify patients with type 2 diabetes based on their vulnerability to incident heart failure and hospitalization for these episodes,
The hefty cost for these drugs, with retail prices that run over $6,000 annually for the most widely used and most potent agents in the class, has spurred researchers to try to find cost-effective ways to identify patients with type 2 diabetes who stand to benefit most from taking an SGLT2 inhibitor.
‘Cost must be considered’
“Cost must be considered, and at this point it’s probably more responsible on a societal level to advise using SGLT2 inhibitors mainly in patients [with type 2 diabetes] with compelling indications,” said Silvio Inzucchi, MD, professor and director of the Yale Medicine Diabetes Center in New Haven, Conn. Dr. Inzucchi added, however, that “I can easily foresee a day when these agents are considered foundational therapy for all patients with type 2 diabetes, after they go generic and cost is not a major issue. I’m starting to lean toward this very simplified approach, but the costs are prohibitive at this time.”
“If the SGLT2 inhibitors were available at a low cost, I’d argue that they should be used in all patients with type 2 diabetes who have no contraindications or tolerability issues; but we live in a world where they are not yet low cost,” agreed Mikhail N. Kosiborod, MD, a cardiologist and codirector of the Cardiometabolic Center of Excellence at Saint Luke’s Mid-America Heart Institute in Kansas City, Mo.
“We can’t give SGLT2 inhibitors to everyone with type 2 diabetes right now because that would be too costly; these agents are so expensive. You start by targeting the patients with the highest risk” for incident heart failure, said Ambarish Pandey, MD, a cardiologist at the University of Texas Southwestern Medical Center, Dallas.
The spotlight the SGLT2 inhibitor class has received, based on its unexpectedly potent efficacy in cutting rates of acute heart failure episodes in patients with type 2 diabetes, has also sharply raised the profile of this complication of type 2 diabetes, an outcome that until recently many clinicians had largely ignored, overshadowed by a focus on adverse outcomes from atherosclerotic cardiovascular disease such as MIs and strokes.
“Results from the SGLT2 inhibitor trials have reignited interest in the relationship between type 2 diabetes and heart failure and have started to shift the mindset of clinicians toward thinking about reducing both atherothrombotic risk and heart failure risk in patients with type 2 diabetes,” said Dr. Berg, a cardiologist at Brigham and Women’s Hospital in Boston.
“Prior to the SGLT2 inhibitor trials, heart failure was on the radar of diabetes clinicians only as something to watch for as a potential side effect of certain glucose-lowering therapies. Now that there are therapies that can lower heart failure hospitalization, it’s made us think more about heart failure, how common it is in patients with type 2 diabetes, and what can we do to lower this risk,” commented Alice Y.Y. Cheng, MD, a diabetes specialist at the University of Toronto.
Banking on biomarkers
Risk scores for assessing the likelihood of people developing incident heart failure date back more than a decade. More recent efforts have focused on patients with type 2 diabetes, starting with scores that relied entirely on clinical markers of risk such as prior heart failure, established coronary artery disease, and chronic kidney disease. Reports of two of these validated scores appeared in 2019, one from a team led by Dr. Berg and associates in 2019, and a second score developed by Dr. Pandey and associates.
More recently, both research teams behind these two scores validated newer versions that further refined assessment of patients with diabetes by including biomarkers of incipient heart failure, such as N-terminal of the prohormone brain natriuretic peptide (NT-proBNP). The UT Southwestern group’s biomarker-based score relies on levels of NT-proBNP as well as on levels of high sensitivity troponin T (hsTnT) and C-reactive protein, plus ECG-based assessment of left ventricular hypertrophy to assess risk for incident heart failure. Developers reported in 2021 that this biomarker score could account for 74% (C-statistic) of the 5-year risk for heart failure among patients with diabetes.
The biomarker-based score devised by Dr. Berg and associates, relies on NT-proBNP, hsTnT, and a history of heart failure to predict the risk for a future hospitalization for heart failure. They reported in Diabetes Care that in validation testing this score accounted for 84% of the risk.
“I’m hopeful that both our original clinically-based risk score and our new biomarker-based score will be endorsed by professional society guidelines. The intent of the biomarker-based score is not to replace the clinical one,” Dr. Berg stressed in an interview. But he acknowledged that it uses biomarker values that currently are not routinely collected in U.S. practice. Biomarkers like NT-proBNP “are highly associated with future heart failure risk, but are not yet routinely assessed,” he said. Because of this, “widespread adoption of the [biomarker] risk tool will require some education.”
It may also require some sort of preliminary screening to determine the appropriateness of using it in a specific patient because of the relative expense of a test for NT-proBNP.
A Texas two-step process
“We can’t perform a [NT-proBNP] test on every patient with type 2 diabetes because cost is a huge barrier,” with a U.K. price of roughly £28 (about $40) per test, commented Naveed Sattar, MD, PhD, professor of metabolic medicine at the University of Glasgow. “NT-proBNP is the best biomarker by far to predict risk” for heart failure,” but “it’s too expensive. It’s not going to happen in everyone,” he said in an interview. He suggested taking a two-step approach to identify patients to test for NT-proBNP based on clinical measures like blood pressure, weight and height, lipid levels and renal function and the presence of suggestive symptoms like dyspnea, fatigue, and peripheral edema, an argument he recently spelled out in detail in an editorial he coauthored.
“More work is needed to define which patients would usefully have cardiac biomarkers measured,” Dr. Sattar wrote with his associate.
Two-step is the approach used in routine practice by clinicians at UT Southwestern Medical Center. “We screen all patients with type 2 diabetes and no diagnosed heart failure who are not already on an SGLT2 inhibitor” using their 2019 screening tool, called the WATCH-DM Risk score, said Dr. Pandey. Patients flagged at high risk by their clinical score receive an SGLT2 inhibitor (presuming no contraindications). The remaining patients with low or intermediate risk may then undergo biomarker-based assessment to find additional patients who warrant SGLT2 inhibitor treatment, he said in an interview.
Often, a record of the most important biomarker, NT-proBNP, is already in the patient’s record and less than a year old, in which case clinicians use that value. An NT-proBNP level of at least 125 pg/mL indicates increased risk in people with a body mass index of less than 30 kg/m2, while for those with higher body mass indexes clinicians at Southwestern apply a threshold for higher risk of at least 100 pg/mL.
In addition to starting those patients on an SGLT2 inhibitor, the Southwestern protocol calls for intensified efforts at weight loss and improved fitness to further lower incident heart failure risk, and they are also considering targeting treatment with a glucagonlike peptide–1 receptor agonist to these patients as well. They have a research protocol in place, called WATCH-DM, that will prospectively assess the efficacy of this strategy.
Despite the cost, others also believe that the time is right for biomarker-based tests to boost access to the benefits that treatment with SGLT2 inhibitors can give patients with type 2 diabetes.
“In theory it’s reasonable” to use a risk score like the recent one reported by Dr. Berg and coauthors, said Vanita R. Aroda, MD, an endocrinologist and director of diabetes clinical research at Brigham and Women’s Hospital in Boston. “We need to pay attention to heart failure as an outcome and use risk stratification” to decide which patients with type 2 diabetes but without established cardiovascular disease warrant treatment with an SGLT2 inhibitor, she said in an interview. “Given the data, we need more concrete recommendations” from medical societies on how to reasonably use biomarkers and imaging to identify patients with type 2 diabetes who are at increased risk for heart failure and hence would benefit from treatment. “This should be of high interest to guidelines committees,” she added.
The earlier version of Dr. Berg’s score, based exclusively on clinical observations and conventional measures like estimated glomerular filtration rate and urinary creatinine to albumin ratio, had overlap with established criteria for starting treatment with an SGLT2 inhibitor, such as the presence of chronic kidney disease, she noted. “A biomarker-based score may provide the additional level of discrimination needed to characterize risk and potential benefit.”
Asymptomatic diabetic cardiomyopathy
Dr. Aroda and several coauthors recently published a review that describes a subset of patients with type 2 diabetes who might get picked up by intensified screening for heart failure risk: those with asymptomatic diabetic cardiomyopathy, a clinical state that they said represents patients with stage B heart failure based on the new Universal Definition and Classification of Heart Failure. Until recently, these patients with type 2 diabetes and asymptomatic cardiomyopathy have mostly gone unrecognized.
A recent report from Dr. Pandey and associates reviewed records from 2,900 U.S. patients with diabetes and no symptoms who had been included in any of three cohort studies and found echocardiographic evidence of early-stage cardiomyopathy in as many as two-thirds. In an editorial about this report, Dr. Aroda and coauthors called these patients a potential “window of opportunity for prevention and treatment of heart failure.”
“There is evidence of structural cardiac changes that progress through the stages of heart failure,” and starting treatment with an SGLT2 inhibitor during an earlier stage can potentially slow or prevent this progression and thereby limit future functional decline, Dr. Aroda said.
Dr. Sattar agreed. Type 2 diabetes appears to help cause “fluid derangements” and abnormal hemodynamics that produces cardiac stress, changes in heart structure, and adverse remodeling of the heart, a process that “some call cardiomyopathy,” which is exacerbated by other pathologic forces that are also often present in these patients such as obesity and hypertension. SGLT2 inhibitors can help these patients by producing “reverse remodeling of the heart.”
“This process was neglected because for many years our focus was on ischemic heart disease in patients with type 2 diabetes. It was there in plain sight, but we were missing it,” explained Dr. Sattar. Having agents from the SGLT2 inhibitor class “has allowed us to better understand this mechanism.”
The SGLT2 inhibitors are “absolutely the driving reason” why the diabetes–heart failure link has become so important, said Dr. Inzucchi. Having drugs that reduce heart failure risk provided clinicians with a tool that has “changed our mindset.”
“Heart failure prevention has been largely neglected in patients with type 2 diabetes. Reprioritizing heart failure prevention to first and foremost among patients with type 2 diabetes is long overdue,” commented Gregg C. Fonarow, MD, professor and chief of cardiology at the University of California, Los Angeles.
Clinicians don’t like risk scores
Will systematic screening for heart failure risk in selected patients with type 2 diabetes take hold, and with it expanded and better-targeted use of SGLT2 inhibitors?
“I hope so,” said Dr. Kosiborod, but one challenge is that “for the most part clinicians don’t like using risk scores.” Only a few have ever been widely incorporated into practice; mostly they become tools for research. Plus, SGLT2 inhibitor uptake has in general been slow to catch on, which Dr. Kosiborod blames primarily on clinical inertia, a pervasive issue that has also hampered optimal use of drugs as commonplace as statins, ACE inhibitors, and angiotensin-receptor blockers.
“Given the avalanche of positive data, uptake of SGLT2 inhibitors will continue to improve and accelerate; but unfortunately, unless something dramatic happens we’ll likely see their continued underuse for several more years,” he predicted. “Designing better systems of care that prioritize prevention are absolutely needed to improve implementation of effective therapies, including SGLT2 inhibitors.”
Despite their underuse the SGLT2 inhibitor class has, in just 6 years since results from the EMPA-REG OUTCOME trial came out and launched the current treatment era, transformed thinking about the risk that heart failure poses to patients with type 2 diabetes and the need to manage this risk.
“I thank the SGLT2 inhibitors for raising awareness of heart failure risk in patients with diabetes,” and for giving clinicians a new way to mitigate this risk, said Dr. Cheng.
Dr. Berg has been a consultant to AstraZeneca, and received research grant support to his institution from AstraZeneca and Pfizer. Dr. Cheng has received personal fees from multiple pharmaceutical companies. Dr. Kosiborod has been an adviser and consultant to multiple pharmaceutical companies; has received research grants from AstraZeneca and Boehringer Ingelheim; and has received other research support from AstraZeneca. Dr. Pandey has been an adviser to Roche Diagnostics; has received nonfinancial support from Pfizer and Merck; and has received research support from Gilead Sciences, Myovista, and Applied Therapeutics. Dr. Sattar has received consulting honoraria from multiple pharmaceutical companies, and has received grant support from Boehringer Ingelheim, Roche Diagnostics, and Novartis. Dr. Aroda has been a consultant for several pharmaceutical companies; has a spouse employed with Janssen; and has received research support (institutional contracts) from multiple pharmaceutical companies. Dr. Fonarow has been a consultant to several pharmaceutical companies.
FROM DIABETES CARE
Antithrombotic therapy not warranted in COVID-19 outpatients
Antithrombotic therapy in clinically stable, nonhospitalized COVID-19 patients does not offer protection against adverse cardiovascular or pulmonary events, new randomized clinical trial results suggest.
Antithrombotic therapy has proven useful in acutely ill inpatients with COVID-19, but in this study, treatment with aspirin or apixaban (Eliquis) did not reduce the rate of all-cause mortality, symptomatic venous or arterial thromboembolism, myocardial infarction, stroke, or hospitalization for cardiovascular or pulmonary causes in patients ill with COVID-19 but who were not hospitalized.
“Among symptomatic, clinically stable outpatients with COVID-19, treatment with aspirin or apixaban compared with placebo did not reduce the rate of a composite clinical outcome,” the authors conclude. “However, the study was terminated after enrollment of 9% of participants because of a primary event rate lower than anticipated.”
The study, which was led by Jean M. Connors, MD, Brigham and Women’s Hospital, Boston, was published online October 11 in JAMA.
The ACTIV-4B Outpatient Thrombosis Prevention Trial was a randomized, adaptive, double-blind, placebo-controlled trial that sought to compare anticoagulant and antiplatelet therapy among 7,000 symptomatic but clinically stable outpatients with COVID-19.
The trial was conducted at 52 sites in the U.S. between Sept. 2020 and June 2021, with final follow-up this past August 5, and involved minimal face-to-face interactions with study participants.
Patients were randomized in a 1:1:1:1 ratio to aspirin (81 mg orally once daily; n = 164 patients), prophylactic-dose apixaban (2.5 mg orally twice daily; n = 165), therapeutic-dose apixaban (5 mg orally twice daily; n = 164), or placebo (n = 164) for 45 days.
The primary endpoint was a composite of all-cause mortality, symptomatic venous or arterial thromboembolism, myocardial infarction, stroke, or hospitalization for cardiovascular or pulmonary cause.
The trial was terminated early this past June by the independent data monitoring committee because of lower than anticipated event rates. At the time, just 657 symptomatic outpatients with COVID-19 had been enrolled.
The median age of the study participants was 54 years (Interquartile Range [IQR] 46-59); 59% were women.
The median time from diagnosis to randomization was 7 days, and the median time from randomization to initiation of study medications was 3 days.
The trial’s primary efficacy and safety analyses were restricted to patients who received at least one dose of trial medication, for a final number of 558 patients.
Among these patients, the primary endpoint occurred in 1 patient (0.7%) in the aspirin group, 1 patient (0.7%) in the 2.5 mg apixaban group, 2 patients (1.4%) in the 5-mg apixaban group, and 1 patient (0.7%) in the placebo group.
The researchers found that the absolute risk reductions compared with placebo for the primary outcome were 0.0% (95% confidence interval not calculable) in the aspirin group, 0.7% (95% confidence interval, -2.1% to 4.1%) in the prophylactic-dose apixaban group, and 1.4% (95% CI, -1.5% to 5%) in the therapeutic-dose apixaban group.
No major bleeding events were reported.
The absolute risk differences compared with placebo for clinically relevant nonmajor bleeding events were 2% (95% CI, -2.7% to 6.8%) in the aspirin group, 4.5% (95% CI, -0.7% to 10.2%) in the prophylactic-dose apixaban group, and 6.9% (95% CI, 1.4% to 12.9%) in the therapeutic-dose apixaban group.
Safety and efficacy results were similar in all randomly assigned patients.
The researchers speculated that a combination of two demographic shifts over time may have led to the lower than anticipated rate of events in ACTIV-4B.
“First, the threshold for hospital admission has markedly declined since the beginning of the pandemic, such that hospitalization is no longer limited almost exclusively to those with severe pulmonary distress likely to require mechanical ventilation,” they write. “As a result, the severity of illness among individuals with COVID-19 and destined for outpatient care has declined.”
“Second, at least within the U.S., where the trial was conducted, individuals currently being infected with SARS-CoV-2 tend to be younger and have fewer comorbidities when compared with individuals with incident infection at the onset of the pandemic,” they add.
Further, COVID-19 testing was quite limited early in the pandemic, they note, “and it is possible that the anticipated event rates based on data from registries available at that time were overestimated because the denominator (that is, the number of infected individuals overall) was essentially unknown.”
Robust evidence
“The ACTIV-4B trial is the first randomized trial to generate robust evidence about the effects of antithrombotic therapy in outpatients with COVID-19,” Otavio Berwanger, MD, PhD, director of the Academic Research Organization, Hospital Israelita Albert Einstein, Sao Paulo-SP, Brazil, told this news organization.
“It should be noted that this was a well-designed trial with low risk of bias. On the other hand, the main limitation is the low number of events and, consequently, the limited statistical power,” said Dr. Berwanger, who wrote an accompanying editorial.
The ACTIV-4B trial has immediate implications for clinical practice, he added.
“In this sense, considering the neutral results for major cardiopulmonary outcomes, the use of aspirin or apixaban for the management of outpatients with COVID-19 should not be recommended.”
ACTIV-4B also provides useful information for the steering committees of other ongoing trials of antithrombotic therapy for patients with COVID-19 who are not hospitalized, Dr. Berwanger added.
“In this sense, probably issues like statistical power, outcome choices, recruitment feasibility, and even futility would need to be revisited. And finally, lessons learned from the implementation of an innovative, pragmatic, and decentralized trial design represent an important legacy for future trials in cardiovascular diseases and other common conditions,” he said.
The study was funded by the National Institutes of Health, and the National Heart, Lung, and Blood Institute. Dr. Connors reports financial relationships with Bristol-Myers Squibb, Pfizer, Abbott, Alnylam, Takeda, Roche, and Sanofi. Dr. Berwanger reports financial relationships with AstraZeneca, Amgen, Servier, Bristol-Myers Squibb, Bayer, Novartis, Pfizer, and Boehringer Ingelheim.
A version of this article first appeared on Medscape.com.
Antithrombotic therapy in clinically stable, nonhospitalized COVID-19 patients does not offer protection against adverse cardiovascular or pulmonary events, new randomized clinical trial results suggest.
Antithrombotic therapy has proven useful in acutely ill inpatients with COVID-19, but in this study, treatment with aspirin or apixaban (Eliquis) did not reduce the rate of all-cause mortality, symptomatic venous or arterial thromboembolism, myocardial infarction, stroke, or hospitalization for cardiovascular or pulmonary causes in patients ill with COVID-19 but who were not hospitalized.
“Among symptomatic, clinically stable outpatients with COVID-19, treatment with aspirin or apixaban compared with placebo did not reduce the rate of a composite clinical outcome,” the authors conclude. “However, the study was terminated after enrollment of 9% of participants because of a primary event rate lower than anticipated.”
The study, which was led by Jean M. Connors, MD, Brigham and Women’s Hospital, Boston, was published online October 11 in JAMA.
The ACTIV-4B Outpatient Thrombosis Prevention Trial was a randomized, adaptive, double-blind, placebo-controlled trial that sought to compare anticoagulant and antiplatelet therapy among 7,000 symptomatic but clinically stable outpatients with COVID-19.
The trial was conducted at 52 sites in the U.S. between Sept. 2020 and June 2021, with final follow-up this past August 5, and involved minimal face-to-face interactions with study participants.
Patients were randomized in a 1:1:1:1 ratio to aspirin (81 mg orally once daily; n = 164 patients), prophylactic-dose apixaban (2.5 mg orally twice daily; n = 165), therapeutic-dose apixaban (5 mg orally twice daily; n = 164), or placebo (n = 164) for 45 days.
The primary endpoint was a composite of all-cause mortality, symptomatic venous or arterial thromboembolism, myocardial infarction, stroke, or hospitalization for cardiovascular or pulmonary cause.
The trial was terminated early this past June by the independent data monitoring committee because of lower than anticipated event rates. At the time, just 657 symptomatic outpatients with COVID-19 had been enrolled.
The median age of the study participants was 54 years (Interquartile Range [IQR] 46-59); 59% were women.
The median time from diagnosis to randomization was 7 days, and the median time from randomization to initiation of study medications was 3 days.
The trial’s primary efficacy and safety analyses were restricted to patients who received at least one dose of trial medication, for a final number of 558 patients.
Among these patients, the primary endpoint occurred in 1 patient (0.7%) in the aspirin group, 1 patient (0.7%) in the 2.5 mg apixaban group, 2 patients (1.4%) in the 5-mg apixaban group, and 1 patient (0.7%) in the placebo group.
The researchers found that the absolute risk reductions compared with placebo for the primary outcome were 0.0% (95% confidence interval not calculable) in the aspirin group, 0.7% (95% confidence interval, -2.1% to 4.1%) in the prophylactic-dose apixaban group, and 1.4% (95% CI, -1.5% to 5%) in the therapeutic-dose apixaban group.
No major bleeding events were reported.
The absolute risk differences compared with placebo for clinically relevant nonmajor bleeding events were 2% (95% CI, -2.7% to 6.8%) in the aspirin group, 4.5% (95% CI, -0.7% to 10.2%) in the prophylactic-dose apixaban group, and 6.9% (95% CI, 1.4% to 12.9%) in the therapeutic-dose apixaban group.
Safety and efficacy results were similar in all randomly assigned patients.
The researchers speculated that a combination of two demographic shifts over time may have led to the lower than anticipated rate of events in ACTIV-4B.
“First, the threshold for hospital admission has markedly declined since the beginning of the pandemic, such that hospitalization is no longer limited almost exclusively to those with severe pulmonary distress likely to require mechanical ventilation,” they write. “As a result, the severity of illness among individuals with COVID-19 and destined for outpatient care has declined.”
“Second, at least within the U.S., where the trial was conducted, individuals currently being infected with SARS-CoV-2 tend to be younger and have fewer comorbidities when compared with individuals with incident infection at the onset of the pandemic,” they add.
Further, COVID-19 testing was quite limited early in the pandemic, they note, “and it is possible that the anticipated event rates based on data from registries available at that time were overestimated because the denominator (that is, the number of infected individuals overall) was essentially unknown.”
Robust evidence
“The ACTIV-4B trial is the first randomized trial to generate robust evidence about the effects of antithrombotic therapy in outpatients with COVID-19,” Otavio Berwanger, MD, PhD, director of the Academic Research Organization, Hospital Israelita Albert Einstein, Sao Paulo-SP, Brazil, told this news organization.
“It should be noted that this was a well-designed trial with low risk of bias. On the other hand, the main limitation is the low number of events and, consequently, the limited statistical power,” said Dr. Berwanger, who wrote an accompanying editorial.
The ACTIV-4B trial has immediate implications for clinical practice, he added.
“In this sense, considering the neutral results for major cardiopulmonary outcomes, the use of aspirin or apixaban for the management of outpatients with COVID-19 should not be recommended.”
ACTIV-4B also provides useful information for the steering committees of other ongoing trials of antithrombotic therapy for patients with COVID-19 who are not hospitalized, Dr. Berwanger added.
“In this sense, probably issues like statistical power, outcome choices, recruitment feasibility, and even futility would need to be revisited. And finally, lessons learned from the implementation of an innovative, pragmatic, and decentralized trial design represent an important legacy for future trials in cardiovascular diseases and other common conditions,” he said.
The study was funded by the National Institutes of Health, and the National Heart, Lung, and Blood Institute. Dr. Connors reports financial relationships with Bristol-Myers Squibb, Pfizer, Abbott, Alnylam, Takeda, Roche, and Sanofi. Dr. Berwanger reports financial relationships with AstraZeneca, Amgen, Servier, Bristol-Myers Squibb, Bayer, Novartis, Pfizer, and Boehringer Ingelheim.
A version of this article first appeared on Medscape.com.
Antithrombotic therapy in clinically stable, nonhospitalized COVID-19 patients does not offer protection against adverse cardiovascular or pulmonary events, new randomized clinical trial results suggest.
Antithrombotic therapy has proven useful in acutely ill inpatients with COVID-19, but in this study, treatment with aspirin or apixaban (Eliquis) did not reduce the rate of all-cause mortality, symptomatic venous or arterial thromboembolism, myocardial infarction, stroke, or hospitalization for cardiovascular or pulmonary causes in patients ill with COVID-19 but who were not hospitalized.
“Among symptomatic, clinically stable outpatients with COVID-19, treatment with aspirin or apixaban compared with placebo did not reduce the rate of a composite clinical outcome,” the authors conclude. “However, the study was terminated after enrollment of 9% of participants because of a primary event rate lower than anticipated.”
The study, which was led by Jean M. Connors, MD, Brigham and Women’s Hospital, Boston, was published online October 11 in JAMA.
The ACTIV-4B Outpatient Thrombosis Prevention Trial was a randomized, adaptive, double-blind, placebo-controlled trial that sought to compare anticoagulant and antiplatelet therapy among 7,000 symptomatic but clinically stable outpatients with COVID-19.
The trial was conducted at 52 sites in the U.S. between Sept. 2020 and June 2021, with final follow-up this past August 5, and involved minimal face-to-face interactions with study participants.
Patients were randomized in a 1:1:1:1 ratio to aspirin (81 mg orally once daily; n = 164 patients), prophylactic-dose apixaban (2.5 mg orally twice daily; n = 165), therapeutic-dose apixaban (5 mg orally twice daily; n = 164), or placebo (n = 164) for 45 days.
The primary endpoint was a composite of all-cause mortality, symptomatic venous or arterial thromboembolism, myocardial infarction, stroke, or hospitalization for cardiovascular or pulmonary cause.
The trial was terminated early this past June by the independent data monitoring committee because of lower than anticipated event rates. At the time, just 657 symptomatic outpatients with COVID-19 had been enrolled.
The median age of the study participants was 54 years (Interquartile Range [IQR] 46-59); 59% were women.
The median time from diagnosis to randomization was 7 days, and the median time from randomization to initiation of study medications was 3 days.
The trial’s primary efficacy and safety analyses were restricted to patients who received at least one dose of trial medication, for a final number of 558 patients.
Among these patients, the primary endpoint occurred in 1 patient (0.7%) in the aspirin group, 1 patient (0.7%) in the 2.5 mg apixaban group, 2 patients (1.4%) in the 5-mg apixaban group, and 1 patient (0.7%) in the placebo group.
The researchers found that the absolute risk reductions compared with placebo for the primary outcome were 0.0% (95% confidence interval not calculable) in the aspirin group, 0.7% (95% confidence interval, -2.1% to 4.1%) in the prophylactic-dose apixaban group, and 1.4% (95% CI, -1.5% to 5%) in the therapeutic-dose apixaban group.
No major bleeding events were reported.
The absolute risk differences compared with placebo for clinically relevant nonmajor bleeding events were 2% (95% CI, -2.7% to 6.8%) in the aspirin group, 4.5% (95% CI, -0.7% to 10.2%) in the prophylactic-dose apixaban group, and 6.9% (95% CI, 1.4% to 12.9%) in the therapeutic-dose apixaban group.
Safety and efficacy results were similar in all randomly assigned patients.
The researchers speculated that a combination of two demographic shifts over time may have led to the lower than anticipated rate of events in ACTIV-4B.
“First, the threshold for hospital admission has markedly declined since the beginning of the pandemic, such that hospitalization is no longer limited almost exclusively to those with severe pulmonary distress likely to require mechanical ventilation,” they write. “As a result, the severity of illness among individuals with COVID-19 and destined for outpatient care has declined.”
“Second, at least within the U.S., where the trial was conducted, individuals currently being infected with SARS-CoV-2 tend to be younger and have fewer comorbidities when compared with individuals with incident infection at the onset of the pandemic,” they add.
Further, COVID-19 testing was quite limited early in the pandemic, they note, “and it is possible that the anticipated event rates based on data from registries available at that time were overestimated because the denominator (that is, the number of infected individuals overall) was essentially unknown.”
Robust evidence
“The ACTIV-4B trial is the first randomized trial to generate robust evidence about the effects of antithrombotic therapy in outpatients with COVID-19,” Otavio Berwanger, MD, PhD, director of the Academic Research Organization, Hospital Israelita Albert Einstein, Sao Paulo-SP, Brazil, told this news organization.
“It should be noted that this was a well-designed trial with low risk of bias. On the other hand, the main limitation is the low number of events and, consequently, the limited statistical power,” said Dr. Berwanger, who wrote an accompanying editorial.
The ACTIV-4B trial has immediate implications for clinical practice, he added.
“In this sense, considering the neutral results for major cardiopulmonary outcomes, the use of aspirin or apixaban for the management of outpatients with COVID-19 should not be recommended.”
ACTIV-4B also provides useful information for the steering committees of other ongoing trials of antithrombotic therapy for patients with COVID-19 who are not hospitalized, Dr. Berwanger added.
“In this sense, probably issues like statistical power, outcome choices, recruitment feasibility, and even futility would need to be revisited. And finally, lessons learned from the implementation of an innovative, pragmatic, and decentralized trial design represent an important legacy for future trials in cardiovascular diseases and other common conditions,” he said.
The study was funded by the National Institutes of Health, and the National Heart, Lung, and Blood Institute. Dr. Connors reports financial relationships with Bristol-Myers Squibb, Pfizer, Abbott, Alnylam, Takeda, Roche, and Sanofi. Dr. Berwanger reports financial relationships with AstraZeneca, Amgen, Servier, Bristol-Myers Squibb, Bayer, Novartis, Pfizer, and Boehringer Ingelheim.
A version of this article first appeared on Medscape.com.
Drink up: Large study confirms coffee beneficial to liver health
Drinking more than three cups of caffeinated coffee a day is associated with less liver stiffness, according to an analysis of a nationally representative survey, which was recently published in Clinical Gastroenterology and Hepatology.
The study is likely the most rigorous look to date on the benefits of coffee on liver health in the U.S. It was based on data from the National Health and Nutrition Examination Survey (NHANES), in which participants were asked about what they eat and drink. Crucially, in 2017, NHANES began to include elastography (FibroScan), of participants’ liver stiffness, not because of suspected problems with the liver but as across-the-board evaluations of all participants.
“Because it’s an unselected population for FibroScan and because of the detail, the granularity, the richness of the information from the nutritional surveys that they do, this is the closest we’re ever going to get to a linkage between what people are eating or drinking and the health of their liver, absent a longitudinal study where we set out to follow people for many, many years,” said Elliot Tapper, MD, assistant professor of gastroenterology at the University of Michigan, Ann Arbor, and the study’s senior author.
Researchers examined data from about 4,500 patients who had participated in the NHANES study in 2017-2018. The participants were aged 20 years or older, with an average age of 48; 73% were overweight, about the national average.
The researchers found no association between coffee consumption and controlled attenuation parameter (CAP), a measure of fatty liver. But they found a link between coffee and liver stiffness.
Those who drank more than three cups of coffee daily had a liver stiffness measure (LSM) that was 0.9 kilopascals (kPa) lower than others (P = .03). Drinking more than three cups a day also was found to be protective against an LSM of 9.5 kPa or higher, the threshold for advanced liver fibrosis (OR, 0.4; P = .05). Decaffeinated coffee was not found to be associated with LSM.
Caffeine is an antagonist to adenosine receptors in the liver cell that, if blocked, stops the production of scar tissue, according to the researchers. But when they looked at estimated caffeine consumption, calculated through the detailed, trained interviews performed by nutritionists, there was no association with liver stiffness. That said, Dr. Tapper noted that this could be due to the imperfection of making those estimations.
“If we had to hypothesize about a mechanism, it would most likely be caffeine, and the reason we couldn’t see that here is because these are estimated milligrams of caffeine per coffee – but the way that we brew coffee, and the beans that we’re using, are so highly variable it just can’t be captured in this kind of database,” he said.
He said the data will be reassuring to clinicians who suggest coffee-drinking to patients.
“There are hepatologists around the world who are actively recommending coffee – they’ll feel empowered by these data,” he said. “I would still like to see more robust longitudinal data before I start spending our precious time counseling patients about coffee. There are many other data-driven interventions for the management of liver disease that we should be focusing our time on.”
Moreover, he said that the data will be important for patients who are particularly interested in natural remedies.
“For patients who are very interested in a natural supplement, to feel like they’re taking an active role in the health of their liver, I will tell them to avoid carbohydrates and increase their exercise – and that it is OK to add coffee to their daily routine.”
A study based on a UK database found that coffee was associated with protection against chronic liver disease, but the association was seen for both caffeinated and decaffeinated drinks, noted Nathan Davies, PhD, professor of biochemistry at the Institute of the Liver and Digestive Health at the University College London.
Dr. Davies, a registered nutritionist who has studied coffee’s effects on the liver, said that while including elastography in the Michigan study is interesting, it “does not necessarily by itself add greatly” to the evidence base.
The outcomes from both studies do suggest a positive effect for coffee, but he said it’s important to remember that liver disease develops over years and decades.
“Looking at a snapshot moment does not necessarily reflect an individual’s behavior during the onset and development of their condition,” he said. “As such, there are a number of behavioral and nutritional factors that could be contributing to the observed effect over a period of years.”
He pointed out that while different coffee and brewing types affect the amount of caffeine in a cup, all cups of coffee in this study were treated the same way. He noted there was no apparent dose-dependent effect, which would have been expected if there is an active ingredient that affects liver stiffness.
“In general, my advice is to improve diet, take more exercise, and reduce alcohol consumption, which is likely to be more effective in preventing liver disease – and its progression – than drinking an extra cup of coffee,” Dr. Davies said. “That being said, for patients at increased risk for liver disease who currently drink three cups or more of coffee daily, it may be prudent for them to continue because this level of consumption might be actively lowering their chances of developing more serious disease.”
Dr. Tapper has done consulting for Novartis, Axcella and Allergan, has served on advisory boards for Mallinckrodt, Bausch Health, Kaleido, and Novo Nordisk, and has unrestricted research grants from Gilead and Valeant. The remaining authors disclose no conflicts. Dr. Davies reported no relevant disclosures.
Drinking more than three cups of caffeinated coffee a day is associated with less liver stiffness, according to an analysis of a nationally representative survey, which was recently published in Clinical Gastroenterology and Hepatology.
The study is likely the most rigorous look to date on the benefits of coffee on liver health in the U.S. It was based on data from the National Health and Nutrition Examination Survey (NHANES), in which participants were asked about what they eat and drink. Crucially, in 2017, NHANES began to include elastography (FibroScan), of participants’ liver stiffness, not because of suspected problems with the liver but as across-the-board evaluations of all participants.
“Because it’s an unselected population for FibroScan and because of the detail, the granularity, the richness of the information from the nutritional surveys that they do, this is the closest we’re ever going to get to a linkage between what people are eating or drinking and the health of their liver, absent a longitudinal study where we set out to follow people for many, many years,” said Elliot Tapper, MD, assistant professor of gastroenterology at the University of Michigan, Ann Arbor, and the study’s senior author.
Researchers examined data from about 4,500 patients who had participated in the NHANES study in 2017-2018. The participants were aged 20 years or older, with an average age of 48; 73% were overweight, about the national average.
The researchers found no association between coffee consumption and controlled attenuation parameter (CAP), a measure of fatty liver. But they found a link between coffee and liver stiffness.
Those who drank more than three cups of coffee daily had a liver stiffness measure (LSM) that was 0.9 kilopascals (kPa) lower than others (P = .03). Drinking more than three cups a day also was found to be protective against an LSM of 9.5 kPa or higher, the threshold for advanced liver fibrosis (OR, 0.4; P = .05). Decaffeinated coffee was not found to be associated with LSM.
Caffeine is an antagonist to adenosine receptors in the liver cell that, if blocked, stops the production of scar tissue, according to the researchers. But when they looked at estimated caffeine consumption, calculated through the detailed, trained interviews performed by nutritionists, there was no association with liver stiffness. That said, Dr. Tapper noted that this could be due to the imperfection of making those estimations.
“If we had to hypothesize about a mechanism, it would most likely be caffeine, and the reason we couldn’t see that here is because these are estimated milligrams of caffeine per coffee – but the way that we brew coffee, and the beans that we’re using, are so highly variable it just can’t be captured in this kind of database,” he said.
He said the data will be reassuring to clinicians who suggest coffee-drinking to patients.
“There are hepatologists around the world who are actively recommending coffee – they’ll feel empowered by these data,” he said. “I would still like to see more robust longitudinal data before I start spending our precious time counseling patients about coffee. There are many other data-driven interventions for the management of liver disease that we should be focusing our time on.”
Moreover, he said that the data will be important for patients who are particularly interested in natural remedies.
“For patients who are very interested in a natural supplement, to feel like they’re taking an active role in the health of their liver, I will tell them to avoid carbohydrates and increase their exercise – and that it is OK to add coffee to their daily routine.”
A study based on a UK database found that coffee was associated with protection against chronic liver disease, but the association was seen for both caffeinated and decaffeinated drinks, noted Nathan Davies, PhD, professor of biochemistry at the Institute of the Liver and Digestive Health at the University College London.
Dr. Davies, a registered nutritionist who has studied coffee’s effects on the liver, said that while including elastography in the Michigan study is interesting, it “does not necessarily by itself add greatly” to the evidence base.
The outcomes from both studies do suggest a positive effect for coffee, but he said it’s important to remember that liver disease develops over years and decades.
“Looking at a snapshot moment does not necessarily reflect an individual’s behavior during the onset and development of their condition,” he said. “As such, there are a number of behavioral and nutritional factors that could be contributing to the observed effect over a period of years.”
He pointed out that while different coffee and brewing types affect the amount of caffeine in a cup, all cups of coffee in this study were treated the same way. He noted there was no apparent dose-dependent effect, which would have been expected if there is an active ingredient that affects liver stiffness.
“In general, my advice is to improve diet, take more exercise, and reduce alcohol consumption, which is likely to be more effective in preventing liver disease – and its progression – than drinking an extra cup of coffee,” Dr. Davies said. “That being said, for patients at increased risk for liver disease who currently drink three cups or more of coffee daily, it may be prudent for them to continue because this level of consumption might be actively lowering their chances of developing more serious disease.”
Dr. Tapper has done consulting for Novartis, Axcella and Allergan, has served on advisory boards for Mallinckrodt, Bausch Health, Kaleido, and Novo Nordisk, and has unrestricted research grants from Gilead and Valeant. The remaining authors disclose no conflicts. Dr. Davies reported no relevant disclosures.
Drinking more than three cups of caffeinated coffee a day is associated with less liver stiffness, according to an analysis of a nationally representative survey, which was recently published in Clinical Gastroenterology and Hepatology.
The study is likely the most rigorous look to date on the benefits of coffee on liver health in the U.S. It was based on data from the National Health and Nutrition Examination Survey (NHANES), in which participants were asked about what they eat and drink. Crucially, in 2017, NHANES began to include elastography (FibroScan), of participants’ liver stiffness, not because of suspected problems with the liver but as across-the-board evaluations of all participants.
“Because it’s an unselected population for FibroScan and because of the detail, the granularity, the richness of the information from the nutritional surveys that they do, this is the closest we’re ever going to get to a linkage between what people are eating or drinking and the health of their liver, absent a longitudinal study where we set out to follow people for many, many years,” said Elliot Tapper, MD, assistant professor of gastroenterology at the University of Michigan, Ann Arbor, and the study’s senior author.
Researchers examined data from about 4,500 patients who had participated in the NHANES study in 2017-2018. The participants were aged 20 years or older, with an average age of 48; 73% were overweight, about the national average.
The researchers found no association between coffee consumption and controlled attenuation parameter (CAP), a measure of fatty liver. But they found a link between coffee and liver stiffness.
Those who drank more than three cups of coffee daily had a liver stiffness measure (LSM) that was 0.9 kilopascals (kPa) lower than others (P = .03). Drinking more than three cups a day also was found to be protective against an LSM of 9.5 kPa or higher, the threshold for advanced liver fibrosis (OR, 0.4; P = .05). Decaffeinated coffee was not found to be associated with LSM.
Caffeine is an antagonist to adenosine receptors in the liver cell that, if blocked, stops the production of scar tissue, according to the researchers. But when they looked at estimated caffeine consumption, calculated through the detailed, trained interviews performed by nutritionists, there was no association with liver stiffness. That said, Dr. Tapper noted that this could be due to the imperfection of making those estimations.
“If we had to hypothesize about a mechanism, it would most likely be caffeine, and the reason we couldn’t see that here is because these are estimated milligrams of caffeine per coffee – but the way that we brew coffee, and the beans that we’re using, are so highly variable it just can’t be captured in this kind of database,” he said.
He said the data will be reassuring to clinicians who suggest coffee-drinking to patients.
“There are hepatologists around the world who are actively recommending coffee – they’ll feel empowered by these data,” he said. “I would still like to see more robust longitudinal data before I start spending our precious time counseling patients about coffee. There are many other data-driven interventions for the management of liver disease that we should be focusing our time on.”
Moreover, he said that the data will be important for patients who are particularly interested in natural remedies.
“For patients who are very interested in a natural supplement, to feel like they’re taking an active role in the health of their liver, I will tell them to avoid carbohydrates and increase their exercise – and that it is OK to add coffee to their daily routine.”
A study based on a UK database found that coffee was associated with protection against chronic liver disease, but the association was seen for both caffeinated and decaffeinated drinks, noted Nathan Davies, PhD, professor of biochemistry at the Institute of the Liver and Digestive Health at the University College London.
Dr. Davies, a registered nutritionist who has studied coffee’s effects on the liver, said that while including elastography in the Michigan study is interesting, it “does not necessarily by itself add greatly” to the evidence base.
The outcomes from both studies do suggest a positive effect for coffee, but he said it’s important to remember that liver disease develops over years and decades.
“Looking at a snapshot moment does not necessarily reflect an individual’s behavior during the onset and development of their condition,” he said. “As such, there are a number of behavioral and nutritional factors that could be contributing to the observed effect over a period of years.”
He pointed out that while different coffee and brewing types affect the amount of caffeine in a cup, all cups of coffee in this study were treated the same way. He noted there was no apparent dose-dependent effect, which would have been expected if there is an active ingredient that affects liver stiffness.
“In general, my advice is to improve diet, take more exercise, and reduce alcohol consumption, which is likely to be more effective in preventing liver disease – and its progression – than drinking an extra cup of coffee,” Dr. Davies said. “That being said, for patients at increased risk for liver disease who currently drink three cups or more of coffee daily, it may be prudent for them to continue because this level of consumption might be actively lowering their chances of developing more serious disease.”
Dr. Tapper has done consulting for Novartis, Axcella and Allergan, has served on advisory boards for Mallinckrodt, Bausch Health, Kaleido, and Novo Nordisk, and has unrestricted research grants from Gilead and Valeant. The remaining authors disclose no conflicts. Dr. Davies reported no relevant disclosures.
FROM CLINICAL GASTROENTEROLOGY AND HEPATOLOGY
Estimating insulin resistance may help predict stroke, death in T2D
Calculating the estimated glucose disposal rate (eGDR) as a proxy for the level of insulin resistance may be useful way to determine if someone with type 2 diabetes (T2D) is at risk for having a first stroke, Swedish researchers have found.
In a large population-based study, the lower the eGDR score went, the higher the risk for having a first stroke became.
The eGDR score was also predictive of the chance of dying from any or a cardiovascular cause, Alexander Zabala, MD, reported at the annual meeting of the European Association for the Study of Diabetes (Abstract OP 01-4).
The link between insulin resistance and an increased risk for stroke has been known for some time, and not just in people with T2D. However, the current way of determining insulin resistance is not suitable for widespread practice.
“The goal standard technique for measuring insulin resistance is the euglycemic clamp method,” said Dr. Zabala, an internal medical resident at Södersjukhuset hospital and researcher at the Karolinska Institutet in Stockholm.
“For that reason, [the eGDR], a method based on readily available clinical factors – waist circumference, hypertension, and glycosylated hemoglobin was developed,” he explained. Body mass index can also be used in place of waist circumference, he qualified.
The eGDR has already been proven to be very precise in people with type 1 diabetes, said Dr. Zabala, and could be an “excellent tool to measure insulin resistance in a large patient population.”
Investigating the link between eGDR and first stroke risk
The aim of the study he presented was to see if changes in the eGDR were associated with changes in the risk of someone with T2D experiencing a first stroke, or dying from a cardiovascular or other cause.
An observational cohort was formed by first considering data on all adult patients with T2D who were logged in the Swedish National Diabetes Registry (NDR) during 2004-2016. Then anyone with a history of stroke, or with any missing data on the clinical variables needed to calculate the eGDR, were excluded.
This resulted in an overall population of 104,697 individuals, aged a mean of 63 years, who had developed T2D at around the age of 59 years. About 44% of the study population were women. The mean eGDR for the whole population was 5.6 mg/kg per min.
The study subjects were grouped according to four eGDR levels: 24,706 were in the lowest quartile of eGDR (less than 4 mg/kg per min), signifying the highest level of insulin resistance, and 18,762 were in the upper quartile of eGDR (greater than 8 mg/kg per min), signifying the lowest level of insulin resistance. The middle two groups had an eGDR between 4 and 6 mg/kg per min (40,187), and 6 and 8 mg/kg/min (21,042).
Data from the NDR were then combined with the Swedish Cause of Death register, the Swedish In-patient Care Diagnoses registry, and the Longitudinal Database for Health Insurance and Labour Market Studies (LISA) to determine the rates of stroke, ischemic stroke, hemorrhagic stroke, all-cause mortality, and cardiovascular mortality.
Increasing insulin resistance ups risk for stroke, death
After a median follow-up of 5.6 years, 4% (4,201) of the study population had had a stroke.
“We clearly see an increased occurrence of first-time stroke in the group with the lowest eGDR, indicating worst insulin resistance, in comparison with the group with the highest eGDR, indicating less insulin resistance,” Dr. Zabala reported.
After adjustment for potential confounding factors, including age at baseline, gender, diabetes duration, among other variables, the risk for stroke was lowest in those with a high eGDR value and highest for those with a low eGDR value.
Using individuals with the lowest eGDR (less than 4 mg/kg per min) and thus greatest risk of stroke as the reference, adjusted hazard ratios (aHR) for first-time stroke were: 0.60, 0.68, and 0.77 for those with an eGDR of greater than 8, 6-8, and 4-6 mg/kg per min, respectively.
The corresponding values for risk of ischemic stroke were 0.55, 0.68, and 0.75. Regarding hemorrhagic stroke, there was no statistically significant correlation between eGDR levels and stroke occurrence. This was due to the small number of cases recorded.
As for all-cause and cardiovascular mortality, a similar pattern was seen, with higher rates of death linked to increasing insulin resistance. Adjusted hazard ratios according to increasing insulin resistance (decreasing eGDR scores) for all-cause death were 0.68, 0.75, and 0.82 and for cardiovascular mortality were 0.65, 0.75, and 0.82.
A sensitivity analysis, using BMI instead of waist circumference to calculate the eGDR, showed a similar pattern, and “interestingly, a correlation between eGDR levels and risk of hemorrhagic stroke.” Dr. Zabala said.
Limitations and take-homes
Of course, this is an observational cohort study, so no conclusions on causality can be made and there are no data on the use of anti-diabetic treatments specifically. But there are strengths such as covering almost all adults with T2D in Sweden and a relatively long-follow-up time.
The findings suggest that “eGDR, which may reflect insulin resistance may be a useful risk marker for stroke and death in people with type 2 diabetes,” said Dr. Zabala.
“You had a very large cohort, and that certainly makes your results very valid,” observed Peter Novodvorsky, MUDr. (Hons), PhD, MRCP, a consultant diabetologist in Trenčín, Slovakia.
Dr. Novodvorsky, who chaired the session, picked up on the lack of information about how many people were taking newer diabetes drugs, such as the glucagon-like peptide 1 receptor antagonists and sodium glucose-lowering transport 2 inhibitors.
“As we all know, these might have protective effects which are not necessarily related to the glucose lowering or insulin resistance-lowering” effects, so could have influenced the results. In terms of how practical the eGDR is for clinical practice, Dr. Zabala observed in a press release: “eGDR could be used to help T2D patients better understand and manage their risk of stroke and death.
“It could also be of importance in research. In this era of personalized medicine, better stratification of type 2 diabetes patients will help optimize clinical trials and further vital research into treatment, diagnosis, care and prevention.”
The research was a collaboration between the Karolinska Institutet, Gothenburg University and the Swedish National Diabetes Registry. Dr. Zabala and coauthors reported having no conflicts of interest.
Calculating the estimated glucose disposal rate (eGDR) as a proxy for the level of insulin resistance may be useful way to determine if someone with type 2 diabetes (T2D) is at risk for having a first stroke, Swedish researchers have found.
In a large population-based study, the lower the eGDR score went, the higher the risk for having a first stroke became.
The eGDR score was also predictive of the chance of dying from any or a cardiovascular cause, Alexander Zabala, MD, reported at the annual meeting of the European Association for the Study of Diabetes (Abstract OP 01-4).
The link between insulin resistance and an increased risk for stroke has been known for some time, and not just in people with T2D. However, the current way of determining insulin resistance is not suitable for widespread practice.
“The goal standard technique for measuring insulin resistance is the euglycemic clamp method,” said Dr. Zabala, an internal medical resident at Södersjukhuset hospital and researcher at the Karolinska Institutet in Stockholm.
“For that reason, [the eGDR], a method based on readily available clinical factors – waist circumference, hypertension, and glycosylated hemoglobin was developed,” he explained. Body mass index can also be used in place of waist circumference, he qualified.
The eGDR has already been proven to be very precise in people with type 1 diabetes, said Dr. Zabala, and could be an “excellent tool to measure insulin resistance in a large patient population.”
Investigating the link between eGDR and first stroke risk
The aim of the study he presented was to see if changes in the eGDR were associated with changes in the risk of someone with T2D experiencing a first stroke, or dying from a cardiovascular or other cause.
An observational cohort was formed by first considering data on all adult patients with T2D who were logged in the Swedish National Diabetes Registry (NDR) during 2004-2016. Then anyone with a history of stroke, or with any missing data on the clinical variables needed to calculate the eGDR, were excluded.
This resulted in an overall population of 104,697 individuals, aged a mean of 63 years, who had developed T2D at around the age of 59 years. About 44% of the study population were women. The mean eGDR for the whole population was 5.6 mg/kg per min.
The study subjects were grouped according to four eGDR levels: 24,706 were in the lowest quartile of eGDR (less than 4 mg/kg per min), signifying the highest level of insulin resistance, and 18,762 were in the upper quartile of eGDR (greater than 8 mg/kg per min), signifying the lowest level of insulin resistance. The middle two groups had an eGDR between 4 and 6 mg/kg per min (40,187), and 6 and 8 mg/kg/min (21,042).
Data from the NDR were then combined with the Swedish Cause of Death register, the Swedish In-patient Care Diagnoses registry, and the Longitudinal Database for Health Insurance and Labour Market Studies (LISA) to determine the rates of stroke, ischemic stroke, hemorrhagic stroke, all-cause mortality, and cardiovascular mortality.
Increasing insulin resistance ups risk for stroke, death
After a median follow-up of 5.6 years, 4% (4,201) of the study population had had a stroke.
“We clearly see an increased occurrence of first-time stroke in the group with the lowest eGDR, indicating worst insulin resistance, in comparison with the group with the highest eGDR, indicating less insulin resistance,” Dr. Zabala reported.
After adjustment for potential confounding factors, including age at baseline, gender, diabetes duration, among other variables, the risk for stroke was lowest in those with a high eGDR value and highest for those with a low eGDR value.
Using individuals with the lowest eGDR (less than 4 mg/kg per min) and thus greatest risk of stroke as the reference, adjusted hazard ratios (aHR) for first-time stroke were: 0.60, 0.68, and 0.77 for those with an eGDR of greater than 8, 6-8, and 4-6 mg/kg per min, respectively.
The corresponding values for risk of ischemic stroke were 0.55, 0.68, and 0.75. Regarding hemorrhagic stroke, there was no statistically significant correlation between eGDR levels and stroke occurrence. This was due to the small number of cases recorded.
As for all-cause and cardiovascular mortality, a similar pattern was seen, with higher rates of death linked to increasing insulin resistance. Adjusted hazard ratios according to increasing insulin resistance (decreasing eGDR scores) for all-cause death were 0.68, 0.75, and 0.82 and for cardiovascular mortality were 0.65, 0.75, and 0.82.
A sensitivity analysis, using BMI instead of waist circumference to calculate the eGDR, showed a similar pattern, and “interestingly, a correlation between eGDR levels and risk of hemorrhagic stroke.” Dr. Zabala said.
Limitations and take-homes
Of course, this is an observational cohort study, so no conclusions on causality can be made and there are no data on the use of anti-diabetic treatments specifically. But there are strengths such as covering almost all adults with T2D in Sweden and a relatively long-follow-up time.
The findings suggest that “eGDR, which may reflect insulin resistance may be a useful risk marker for stroke and death in people with type 2 diabetes,” said Dr. Zabala.
“You had a very large cohort, and that certainly makes your results very valid,” observed Peter Novodvorsky, MUDr. (Hons), PhD, MRCP, a consultant diabetologist in Trenčín, Slovakia.
Dr. Novodvorsky, who chaired the session, picked up on the lack of information about how many people were taking newer diabetes drugs, such as the glucagon-like peptide 1 receptor antagonists and sodium glucose-lowering transport 2 inhibitors.
“As we all know, these might have protective effects which are not necessarily related to the glucose lowering or insulin resistance-lowering” effects, so could have influenced the results. In terms of how practical the eGDR is for clinical practice, Dr. Zabala observed in a press release: “eGDR could be used to help T2D patients better understand and manage their risk of stroke and death.
“It could also be of importance in research. In this era of personalized medicine, better stratification of type 2 diabetes patients will help optimize clinical trials and further vital research into treatment, diagnosis, care and prevention.”
The research was a collaboration between the Karolinska Institutet, Gothenburg University and the Swedish National Diabetes Registry. Dr. Zabala and coauthors reported having no conflicts of interest.
Calculating the estimated glucose disposal rate (eGDR) as a proxy for the level of insulin resistance may be useful way to determine if someone with type 2 diabetes (T2D) is at risk for having a first stroke, Swedish researchers have found.
In a large population-based study, the lower the eGDR score went, the higher the risk for having a first stroke became.
The eGDR score was also predictive of the chance of dying from any or a cardiovascular cause, Alexander Zabala, MD, reported at the annual meeting of the European Association for the Study of Diabetes (Abstract OP 01-4).
The link between insulin resistance and an increased risk for stroke has been known for some time, and not just in people with T2D. However, the current way of determining insulin resistance is not suitable for widespread practice.
“The goal standard technique for measuring insulin resistance is the euglycemic clamp method,” said Dr. Zabala, an internal medical resident at Södersjukhuset hospital and researcher at the Karolinska Institutet in Stockholm.
“For that reason, [the eGDR], a method based on readily available clinical factors – waist circumference, hypertension, and glycosylated hemoglobin was developed,” he explained. Body mass index can also be used in place of waist circumference, he qualified.
The eGDR has already been proven to be very precise in people with type 1 diabetes, said Dr. Zabala, and could be an “excellent tool to measure insulin resistance in a large patient population.”
Investigating the link between eGDR and first stroke risk
The aim of the study he presented was to see if changes in the eGDR were associated with changes in the risk of someone with T2D experiencing a first stroke, or dying from a cardiovascular or other cause.
An observational cohort was formed by first considering data on all adult patients with T2D who were logged in the Swedish National Diabetes Registry (NDR) during 2004-2016. Then anyone with a history of stroke, or with any missing data on the clinical variables needed to calculate the eGDR, were excluded.
This resulted in an overall population of 104,697 individuals, aged a mean of 63 years, who had developed T2D at around the age of 59 years. About 44% of the study population were women. The mean eGDR for the whole population was 5.6 mg/kg per min.
The study subjects were grouped according to four eGDR levels: 24,706 were in the lowest quartile of eGDR (less than 4 mg/kg per min), signifying the highest level of insulin resistance, and 18,762 were in the upper quartile of eGDR (greater than 8 mg/kg per min), signifying the lowest level of insulin resistance. The middle two groups had an eGDR between 4 and 6 mg/kg per min (40,187), and 6 and 8 mg/kg/min (21,042).
Data from the NDR were then combined with the Swedish Cause of Death register, the Swedish In-patient Care Diagnoses registry, and the Longitudinal Database for Health Insurance and Labour Market Studies (LISA) to determine the rates of stroke, ischemic stroke, hemorrhagic stroke, all-cause mortality, and cardiovascular mortality.
Increasing insulin resistance ups risk for stroke, death
After a median follow-up of 5.6 years, 4% (4,201) of the study population had had a stroke.
“We clearly see an increased occurrence of first-time stroke in the group with the lowest eGDR, indicating worst insulin resistance, in comparison with the group with the highest eGDR, indicating less insulin resistance,” Dr. Zabala reported.
After adjustment for potential confounding factors, including age at baseline, gender, diabetes duration, among other variables, the risk for stroke was lowest in those with a high eGDR value and highest for those with a low eGDR value.
Using individuals with the lowest eGDR (less than 4 mg/kg per min) and thus greatest risk of stroke as the reference, adjusted hazard ratios (aHR) for first-time stroke were: 0.60, 0.68, and 0.77 for those with an eGDR of greater than 8, 6-8, and 4-6 mg/kg per min, respectively.
The corresponding values for risk of ischemic stroke were 0.55, 0.68, and 0.75. Regarding hemorrhagic stroke, there was no statistically significant correlation between eGDR levels and stroke occurrence. This was due to the small number of cases recorded.
As for all-cause and cardiovascular mortality, a similar pattern was seen, with higher rates of death linked to increasing insulin resistance. Adjusted hazard ratios according to increasing insulin resistance (decreasing eGDR scores) for all-cause death were 0.68, 0.75, and 0.82 and for cardiovascular mortality were 0.65, 0.75, and 0.82.
A sensitivity analysis, using BMI instead of waist circumference to calculate the eGDR, showed a similar pattern, and “interestingly, a correlation between eGDR levels and risk of hemorrhagic stroke.” Dr. Zabala said.
Limitations and take-homes
Of course, this is an observational cohort study, so no conclusions on causality can be made and there are no data on the use of anti-diabetic treatments specifically. But there are strengths such as covering almost all adults with T2D in Sweden and a relatively long-follow-up time.
The findings suggest that “eGDR, which may reflect insulin resistance may be a useful risk marker for stroke and death in people with type 2 diabetes,” said Dr. Zabala.
“You had a very large cohort, and that certainly makes your results very valid,” observed Peter Novodvorsky, MUDr. (Hons), PhD, MRCP, a consultant diabetologist in Trenčín, Slovakia.
Dr. Novodvorsky, who chaired the session, picked up on the lack of information about how many people were taking newer diabetes drugs, such as the glucagon-like peptide 1 receptor antagonists and sodium glucose-lowering transport 2 inhibitors.
“As we all know, these might have protective effects which are not necessarily related to the glucose lowering or insulin resistance-lowering” effects, so could have influenced the results. In terms of how practical the eGDR is for clinical practice, Dr. Zabala observed in a press release: “eGDR could be used to help T2D patients better understand and manage their risk of stroke and death.
“It could also be of importance in research. In this era of personalized medicine, better stratification of type 2 diabetes patients will help optimize clinical trials and further vital research into treatment, diagnosis, care and prevention.”
The research was a collaboration between the Karolinska Institutet, Gothenburg University and the Swedish National Diabetes Registry. Dr. Zabala and coauthors reported having no conflicts of interest.
FROM EASD 2021
Dropping weight beneficial but some effects of obesity persist
It’s hard for people to completely escape a history of obesity, even when they later achieve a healthy weight.
American adults who once had obesity but later achieved and maintained a healthy body mass index (BMI) normalized some, but not all, of the excess clinical risk associated with obesity in a review of data collected from about 20,000 people during a series of eight NHANES surveys.
Maia P. Smith, MD, reported the findings at the virtual European Association for the Study of Diabetes (EASD) 2021 Annual Meeting.
“For some conditions, such as hypertension and dyslipidemia, the recovery [following a sharp drop in BMI] appears to be total, while for other conditions, like diabetes, the recovery is probabilistic. Some recover, but some don’t,” explained Dr. Smith in an interview.
“Weight loss reverses all, or essentially all, of the damage done by obesity in some people, but does not cause full reversal of the harm and does not fully resolve [type 2] diabetes in many others,” added Dr. Smith, an epidemiologist in the Department of Public Health and Preventive Medicine at St. George’s University, Grenada.
“The fact that ... analyses comparing formerly obese people to normal weight populations demonstrated improvement in population mean levels of hypertension and dyslipidemia is remarkable,” commented Rebecca T. Emeny, PhD, an epidemiologist at the Dartmouth Institute of Health Policy and Clinical Practice in Lebanon, New Hampshire, who was not involved with Dr. Smith’s study.
“The observation that the individuals who were able to maintain normal weight after past obesity were still at greater risk for diabetes compared with the normal weight group speaks to the recent discussion of obesity as a metabolic disorder rather than a problem of calories in and calories out,” said Dr. Emeny in an interview.
She cited a recent article that proposed a carbohydrate-insulin model for obesity in place of an energy-balance model. This, however, is still somewhat contentious.
Dr. Emeny also cautioned that “the results of this study compare populations. The design and analysis do not allow for interpretation of individual risk resulting from changes in weight.”
Those who formerly had obesity can reverse hypertension, dyslipidemia
The study by Dr. Smith and associates used data collected in the National Health and Nutrition Examination Survey (NHANES), which is performed every 2 years by the U.S. Centers for Disease Control and Prevention.
They used data from eight consecutive surveys starting in 1999-2000 and continuing through 2013-2014, yielding data from nearly 40,000 adults who were at least 20 years old.
In addition to the 326 people who formerly had obesity at some time previously during their life (BMI ≥30 kg/m2) but now had a healthy BMI, and 6,235 who were consistently at a healthy BMI, they also included 13,710 people who currently had obesity. They dropped the remaining survey participants who did not fit into one of these three categories.
The participants who formerly had obesity averaged 54 years old, compared with a mean age of 48 years among those with current obesity and 41 years among those who currently had a healthy BMI (who had never had obesity). The results showed no differences by sex, but those who formerly had obesity had a much higher smoking prevalence.
The people who reported a healthy BMI (18.5-24.9 kg/m2) after previously having obesity had current prevalence rates of hypertension and dyslipidemia that were, respectively, 8% and 13% higher than the prevalence rates among adults who consistently maintained a healthy BMI – differences that were not significant.
In contrast, people who had current BMIs that indicated obesity had prevalence rates of hypertension and dyslipidemia that were each a significant threefold higher than those with a healthy BMI.
The 326 respondents who formerly had obesity but now were at a healthy BMI had a threefold higher prevalence of diabetes than did the 6,235 who consistently had maintained a healthy BMI. This was substantially less than the over sevenfold higher prevalence of diabetes among those who currently had obesity compared with those who always had a healthy BMI.
All these analyses were adjusted for the potential confounders of age, sex, smoking history, and ethnicity.
‘Quitting’ obesity better than current obesity
The finding that reaching a healthy BMI after a period of obesity could reverse some but not all risks associated with obesity is reminiscent of the effects of smoking, noted Dr. Smith.
“Never is better than ever, but quitting,” or dropping weight to reach a healthy BMI, “is better than current,” she concluded.
But Dr. Emeny said this interpretation, “while motivating and catchy, places emphasis on individual responsibility and choice rather than on social circumstances.”
Social effects “must be considered when evaluating population-level disparities in obesity-related cardiometabolic risk,” cautioned Dr. Emeny.
“’Quitting’ obesity is much more complicated than individual choice or ability.”
Dr. Smith also conceded that her analyses did not correct for the possible confounding effects that changes in diet or physical activity may have had on the observations.
“Neither diet nor physical activity has a well-known summary measure that we could have included as an adjuster,” she explained.
Dr. Smith and Dr. Emeny have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
It’s hard for people to completely escape a history of obesity, even when they later achieve a healthy weight.
American adults who once had obesity but later achieved and maintained a healthy body mass index (BMI) normalized some, but not all, of the excess clinical risk associated with obesity in a review of data collected from about 20,000 people during a series of eight NHANES surveys.
Maia P. Smith, MD, reported the findings at the virtual European Association for the Study of Diabetes (EASD) 2021 Annual Meeting.
“For some conditions, such as hypertension and dyslipidemia, the recovery [following a sharp drop in BMI] appears to be total, while for other conditions, like diabetes, the recovery is probabilistic. Some recover, but some don’t,” explained Dr. Smith in an interview.
“Weight loss reverses all, or essentially all, of the damage done by obesity in some people, but does not cause full reversal of the harm and does not fully resolve [type 2] diabetes in many others,” added Dr. Smith, an epidemiologist in the Department of Public Health and Preventive Medicine at St. George’s University, Grenada.
“The fact that ... analyses comparing formerly obese people to normal weight populations demonstrated improvement in population mean levels of hypertension and dyslipidemia is remarkable,” commented Rebecca T. Emeny, PhD, an epidemiologist at the Dartmouth Institute of Health Policy and Clinical Practice in Lebanon, New Hampshire, who was not involved with Dr. Smith’s study.
“The observation that the individuals who were able to maintain normal weight after past obesity were still at greater risk for diabetes compared with the normal weight group speaks to the recent discussion of obesity as a metabolic disorder rather than a problem of calories in and calories out,” said Dr. Emeny in an interview.
She cited a recent article that proposed a carbohydrate-insulin model for obesity in place of an energy-balance model. This, however, is still somewhat contentious.
Dr. Emeny also cautioned that “the results of this study compare populations. The design and analysis do not allow for interpretation of individual risk resulting from changes in weight.”
Those who formerly had obesity can reverse hypertension, dyslipidemia
The study by Dr. Smith and associates used data collected in the National Health and Nutrition Examination Survey (NHANES), which is performed every 2 years by the U.S. Centers for Disease Control and Prevention.
They used data from eight consecutive surveys starting in 1999-2000 and continuing through 2013-2014, yielding data from nearly 40,000 adults who were at least 20 years old.
In addition to the 326 people who formerly had obesity at some time previously during their life (BMI ≥30 kg/m2) but now had a healthy BMI, and 6,235 who were consistently at a healthy BMI, they also included 13,710 people who currently had obesity. They dropped the remaining survey participants who did not fit into one of these three categories.
The participants who formerly had obesity averaged 54 years old, compared with a mean age of 48 years among those with current obesity and 41 years among those who currently had a healthy BMI (who had never had obesity). The results showed no differences by sex, but those who formerly had obesity had a much higher smoking prevalence.
The people who reported a healthy BMI (18.5-24.9 kg/m2) after previously having obesity had current prevalence rates of hypertension and dyslipidemia that were, respectively, 8% and 13% higher than the prevalence rates among adults who consistently maintained a healthy BMI – differences that were not significant.
In contrast, people who had current BMIs that indicated obesity had prevalence rates of hypertension and dyslipidemia that were each a significant threefold higher than those with a healthy BMI.
The 326 respondents who formerly had obesity but now were at a healthy BMI had a threefold higher prevalence of diabetes than did the 6,235 who consistently had maintained a healthy BMI. This was substantially less than the over sevenfold higher prevalence of diabetes among those who currently had obesity compared with those who always had a healthy BMI.
All these analyses were adjusted for the potential confounders of age, sex, smoking history, and ethnicity.
‘Quitting’ obesity better than current obesity
The finding that reaching a healthy BMI after a period of obesity could reverse some but not all risks associated with obesity is reminiscent of the effects of smoking, noted Dr. Smith.
“Never is better than ever, but quitting,” or dropping weight to reach a healthy BMI, “is better than current,” she concluded.
But Dr. Emeny said this interpretation, “while motivating and catchy, places emphasis on individual responsibility and choice rather than on social circumstances.”
Social effects “must be considered when evaluating population-level disparities in obesity-related cardiometabolic risk,” cautioned Dr. Emeny.
“’Quitting’ obesity is much more complicated than individual choice or ability.”
Dr. Smith also conceded that her analyses did not correct for the possible confounding effects that changes in diet or physical activity may have had on the observations.
“Neither diet nor physical activity has a well-known summary measure that we could have included as an adjuster,” she explained.
Dr. Smith and Dr. Emeny have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
It’s hard for people to completely escape a history of obesity, even when they later achieve a healthy weight.
American adults who once had obesity but later achieved and maintained a healthy body mass index (BMI) normalized some, but not all, of the excess clinical risk associated with obesity in a review of data collected from about 20,000 people during a series of eight NHANES surveys.
Maia P. Smith, MD, reported the findings at the virtual European Association for the Study of Diabetes (EASD) 2021 Annual Meeting.
“For some conditions, such as hypertension and dyslipidemia, the recovery [following a sharp drop in BMI] appears to be total, while for other conditions, like diabetes, the recovery is probabilistic. Some recover, but some don’t,” explained Dr. Smith in an interview.
“Weight loss reverses all, or essentially all, of the damage done by obesity in some people, but does not cause full reversal of the harm and does not fully resolve [type 2] diabetes in many others,” added Dr. Smith, an epidemiologist in the Department of Public Health and Preventive Medicine at St. George’s University, Grenada.
“The fact that ... analyses comparing formerly obese people to normal weight populations demonstrated improvement in population mean levels of hypertension and dyslipidemia is remarkable,” commented Rebecca T. Emeny, PhD, an epidemiologist at the Dartmouth Institute of Health Policy and Clinical Practice in Lebanon, New Hampshire, who was not involved with Dr. Smith’s study.
“The observation that the individuals who were able to maintain normal weight after past obesity were still at greater risk for diabetes compared with the normal weight group speaks to the recent discussion of obesity as a metabolic disorder rather than a problem of calories in and calories out,” said Dr. Emeny in an interview.
She cited a recent article that proposed a carbohydrate-insulin model for obesity in place of an energy-balance model. This, however, is still somewhat contentious.
Dr. Emeny also cautioned that “the results of this study compare populations. The design and analysis do not allow for interpretation of individual risk resulting from changes in weight.”
Those who formerly had obesity can reverse hypertension, dyslipidemia
The study by Dr. Smith and associates used data collected in the National Health and Nutrition Examination Survey (NHANES), which is performed every 2 years by the U.S. Centers for Disease Control and Prevention.
They used data from eight consecutive surveys starting in 1999-2000 and continuing through 2013-2014, yielding data from nearly 40,000 adults who were at least 20 years old.
In addition to the 326 people who formerly had obesity at some time previously during their life (BMI ≥30 kg/m2) but now had a healthy BMI, and 6,235 who were consistently at a healthy BMI, they also included 13,710 people who currently had obesity. They dropped the remaining survey participants who did not fit into one of these three categories.
The participants who formerly had obesity averaged 54 years old, compared with a mean age of 48 years among those with current obesity and 41 years among those who currently had a healthy BMI (who had never had obesity). The results showed no differences by sex, but those who formerly had obesity had a much higher smoking prevalence.
The people who reported a healthy BMI (18.5-24.9 kg/m2) after previously having obesity had current prevalence rates of hypertension and dyslipidemia that were, respectively, 8% and 13% higher than the prevalence rates among adults who consistently maintained a healthy BMI – differences that were not significant.
In contrast, people who had current BMIs that indicated obesity had prevalence rates of hypertension and dyslipidemia that were each a significant threefold higher than those with a healthy BMI.
The 326 respondents who formerly had obesity but now were at a healthy BMI had a threefold higher prevalence of diabetes than did the 6,235 who consistently had maintained a healthy BMI. This was substantially less than the over sevenfold higher prevalence of diabetes among those who currently had obesity compared with those who always had a healthy BMI.
All these analyses were adjusted for the potential confounders of age, sex, smoking history, and ethnicity.
‘Quitting’ obesity better than current obesity
The finding that reaching a healthy BMI after a period of obesity could reverse some but not all risks associated with obesity is reminiscent of the effects of smoking, noted Dr. Smith.
“Never is better than ever, but quitting,” or dropping weight to reach a healthy BMI, “is better than current,” she concluded.
But Dr. Emeny said this interpretation, “while motivating and catchy, places emphasis on individual responsibility and choice rather than on social circumstances.”
Social effects “must be considered when evaluating population-level disparities in obesity-related cardiometabolic risk,” cautioned Dr. Emeny.
“’Quitting’ obesity is much more complicated than individual choice or ability.”
Dr. Smith also conceded that her analyses did not correct for the possible confounding effects that changes in diet or physical activity may have had on the observations.
“Neither diet nor physical activity has a well-known summary measure that we could have included as an adjuster,” she explained.
Dr. Smith and Dr. Emeny have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
from easd 2021