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Medtronic expands recall of MiniMed 600 insulin pumps
Medtronic has updated a previous recall of its MiniMed 600 series insulin pumps to include all with a potentially problematic clear retainer ring, not just those that appear damaged.
The U.S. Food and Drug Administration announced on Oct. 5 that Medtronic will now replace any MiniMed 600 series pump that has a clear retainer ring with an updated pump that includes a black retainer ring at no extra charge, regardless of warranty status.
In November 2019, Medtronic first advised patients to examine their pumps for potential damage to the ring, and to contact the company if it appeared to be loose, damaged, or missing. In February 2020, the FDA designated the recall as class 1, “the most serious type of recall,” for which use of the devices “may cause serious injuries or death.”
In this case, one potential risk is hyperglycemia. This can occur if the reservoir isn’t properly locked into place by the retainer ring, and insulin isn’t infused into the body. That, in turn, can lead to diabetic ketoacidosis. Another risk is hypoglycemia, which could result from over-delivery of insulin if the retainer ring breaks or detaches and the user inserts the reservoir back into the pump with the infusion set still connected to the body.
While serious injuries and deaths have been reported with the use of Minimed series 600 insulin pumps, “those adverse events may not have been directly related to the damaged clear retainer rings that are the basis for this recall,” according to the FDA notice. Nonetheless, lawsuits have reportedly been filed.
The new update is not a result of any new issues, Medtronic spokesperson Pamela Reese told this news organization. “Medtronic will proactively replace all MiniMed 600 series insulin pumps with the clear retainer ring design with an equivalent pump that has an updated black retainer ring design, which is designed to better withstand damage sustained by an accidental drop or bump on a hard surface.”
She added, “As we analyze the information that we continuously collect on the safety and performance of our insulin pumps, we recognize that patients who are still using the clear retainer ring could potentially encounter future problems. Therefore, we are currently accelerating our replacement as inventory allows over the coming months to eliminate any potential performance concerns and optimize patient safety and experience.”
The company has replaced nearly half of the clear retainer ring pumps that were in use since November 2019, she said.
The specific insulin pump products are the model 630G, distributed between September 2016 and February 2020; and the 670G, distributed between May 2015 and December 2020. The 630G is approved for people aged 16 years and older, and the 670G – which works with a continuous glucose monitor in a “hybrid closed-loop system – is available for people with type 1 diabetes as young as 7 years of age.
Medtronic has updated a previous recall of its MiniMed 600 series insulin pumps to include all with a potentially problematic clear retainer ring, not just those that appear damaged.
The U.S. Food and Drug Administration announced on Oct. 5 that Medtronic will now replace any MiniMed 600 series pump that has a clear retainer ring with an updated pump that includes a black retainer ring at no extra charge, regardless of warranty status.
In November 2019, Medtronic first advised patients to examine their pumps for potential damage to the ring, and to contact the company if it appeared to be loose, damaged, or missing. In February 2020, the FDA designated the recall as class 1, “the most serious type of recall,” for which use of the devices “may cause serious injuries or death.”
In this case, one potential risk is hyperglycemia. This can occur if the reservoir isn’t properly locked into place by the retainer ring, and insulin isn’t infused into the body. That, in turn, can lead to diabetic ketoacidosis. Another risk is hypoglycemia, which could result from over-delivery of insulin if the retainer ring breaks or detaches and the user inserts the reservoir back into the pump with the infusion set still connected to the body.
While serious injuries and deaths have been reported with the use of Minimed series 600 insulin pumps, “those adverse events may not have been directly related to the damaged clear retainer rings that are the basis for this recall,” according to the FDA notice. Nonetheless, lawsuits have reportedly been filed.
The new update is not a result of any new issues, Medtronic spokesperson Pamela Reese told this news organization. “Medtronic will proactively replace all MiniMed 600 series insulin pumps with the clear retainer ring design with an equivalent pump that has an updated black retainer ring design, which is designed to better withstand damage sustained by an accidental drop or bump on a hard surface.”
She added, “As we analyze the information that we continuously collect on the safety and performance of our insulin pumps, we recognize that patients who are still using the clear retainer ring could potentially encounter future problems. Therefore, we are currently accelerating our replacement as inventory allows over the coming months to eliminate any potential performance concerns and optimize patient safety and experience.”
The company has replaced nearly half of the clear retainer ring pumps that were in use since November 2019, she said.
The specific insulin pump products are the model 630G, distributed between September 2016 and February 2020; and the 670G, distributed between May 2015 and December 2020. The 630G is approved for people aged 16 years and older, and the 670G – which works with a continuous glucose monitor in a “hybrid closed-loop system – is available for people with type 1 diabetes as young as 7 years of age.
Medtronic has updated a previous recall of its MiniMed 600 series insulin pumps to include all with a potentially problematic clear retainer ring, not just those that appear damaged.
The U.S. Food and Drug Administration announced on Oct. 5 that Medtronic will now replace any MiniMed 600 series pump that has a clear retainer ring with an updated pump that includes a black retainer ring at no extra charge, regardless of warranty status.
In November 2019, Medtronic first advised patients to examine their pumps for potential damage to the ring, and to contact the company if it appeared to be loose, damaged, or missing. In February 2020, the FDA designated the recall as class 1, “the most serious type of recall,” for which use of the devices “may cause serious injuries or death.”
In this case, one potential risk is hyperglycemia. This can occur if the reservoir isn’t properly locked into place by the retainer ring, and insulin isn’t infused into the body. That, in turn, can lead to diabetic ketoacidosis. Another risk is hypoglycemia, which could result from over-delivery of insulin if the retainer ring breaks or detaches and the user inserts the reservoir back into the pump with the infusion set still connected to the body.
While serious injuries and deaths have been reported with the use of Minimed series 600 insulin pumps, “those adverse events may not have been directly related to the damaged clear retainer rings that are the basis for this recall,” according to the FDA notice. Nonetheless, lawsuits have reportedly been filed.
The new update is not a result of any new issues, Medtronic spokesperson Pamela Reese told this news organization. “Medtronic will proactively replace all MiniMed 600 series insulin pumps with the clear retainer ring design with an equivalent pump that has an updated black retainer ring design, which is designed to better withstand damage sustained by an accidental drop or bump on a hard surface.”
She added, “As we analyze the information that we continuously collect on the safety and performance of our insulin pumps, we recognize that patients who are still using the clear retainer ring could potentially encounter future problems. Therefore, we are currently accelerating our replacement as inventory allows over the coming months to eliminate any potential performance concerns and optimize patient safety and experience.”
The company has replaced nearly half of the clear retainer ring pumps that were in use since November 2019, she said.
The specific insulin pump products are the model 630G, distributed between September 2016 and February 2020; and the 670G, distributed between May 2015 and December 2020. The 630G is approved for people aged 16 years and older, and the 670G – which works with a continuous glucose monitor in a “hybrid closed-loop system – is available for people with type 1 diabetes as young as 7 years of age.
TriMaster study shows precision medicine in diabetes is possible
A uniquely-designed three-drug study has demonstrated that individual clinical characteristics, including patient preference, can be used to guide medication choice in type 2 diabetes.
Results from the TriMaster trial using sitagliptin, pioglitazone, and canagliflozin as second- or third-line therapy in a total of 525 patients with type 2 diabetes were presented September 29 at the virtual European Association for the Study of Diabetes (EASD) 2021 Annual Meeting.
TriMaster is a phase 4, multicenter, randomized, double-blind, 12-month crossover trial examining the effects of all three drugs in subgroups of patients with type 2 diabetes who hadn’t achieved target glucose levels with metformin alone or combined with a sulfonylurea.
While all three drugs lowered glucose similarly overall, pioglitazone did so more effectively among patients with a body mass index (BMI) above 30 kg/m2, while sitagliptin worked better in those with a BMI less than 30 kg/m2. However, pioglitazone resulted in more weight gain.
In a second comparison, canagliflozin (a sodium-glucose cotransporter 2 [SGLT2] inhibitor) was more effective than sitagliptin (a dipeptidyl peptidase-4 [DPP-4] inhibitor) in lowering glucose among patients with an estimated glomerular filtration rate (eGFR) above 90 mL/min/1.73m2, while sitagliptin actually lowered glucose better among individuals with an eGFR 60-90 mL/min/1.73m2 than canagliflozin.
And when participants were asked which drug they preferred, the results were split nearly evenly among the three, correlating with how well the drug worked and the side effect profile for each individual.
“We proved a precision approach worked using predefined clinical criteria to define groups of patients where one drug is better than another. This is the first-ever proof of a precision medicine approach in type 2 diabetes,” chief investigator Andrew Hattersley, DM, professor of molecular medicine at the University of Exeter, U.K., told this news organization.
But, he stressed, “These results do not mean all patients with BMI above 30 should have pioglitazone or that all patients with an eGFR 60-90 should have a DPP-4 inhibitor.”
“Drug choice will need to consider other priorities than glycemia ... Patients with heart failure, cardiovascular disease, and chronic kidney disease should be prescribed SGLT2 inhibitors,” he noted. And “some patients will need to avoid specific drugs due to likely side effects.”
‘Modern era’ study used older drugs
Independent commentator Caroline M. Kistorp, MD, PhD, professor of endocrinology at University Hospital Copenhagen, congratulated the investigators for “moving precision medicine from the retrospective analysis of existing data into the modern era of evidence-based medicine with this randomized clinical trial in patients with type 2 diabetes ... Starting this trial back in 2015 was really ahead of their time.”
However, she questioned the use of a thiazolidinedione (TZD), pioglitazone, in the trial, as they are no longer used in many parts of the world in favor of more “modern” glucose-lowering drugs.
“I’m thinking of GLP-1 receptor agonists, especially if you want to treat type 2 diabetes patients who are obese with a BMI over 30 ... I acknowledge that there is a cost issue, but I still think we should try to give our patients the best treatments, so that’s why I’m not sure how much the [TZDs] will be used in the future, even with this trial,” she said.
Dr. Kistorp also noted the trial didn’t include cardiovascular disease outcomes, for which most SGLT2 inhibitors have shown benefit.
“We have to discuss and consider whether A1c is the most important parameter for these patients ... especially looking at their cardiovascular outcomes.”
Mr. Hattersley responded that the study was designed in 2015, prior to the landmark EMPA-REG OUTCOME trial that began the shift toward use of SGLT2 inhibitors for cardiovascular and kidney disease reduction in addition to glycemic control in the clinical management of type 2 diabetes.
“We will report the cardiovascular profiles, but it wasn’t a specific thing because at that time the evidence didn’t exist, so it wasn’t in our protocol,” he explained.
Regarding pioglitazone, he acknowledged that although it may be an alternative to insulin for some patients, “I think for most people you won’t be considering it in clinical practice,” but because it has a very different mechanism from the other two study drugs, “it did give the greater chance of differential effects ... Partly, what we’re really trying to do is test the question of whether precision medicine exists and can we do it.”
Unique study design had each patient act as their own control
Trial statistician Beverley Shields, PhD, of the University of Exeter, U.K., reported the results. The 525 participants with type 2 diabetes were aged 30-79 years and had A1c levels above 58 mmol/mol (7.5%) but not greater than 110 mmol/mol (12.2%) with metformin alone or combined with a sulfonylurea. Just over half (58%) had a BMI above 30 kg/m2 and 52% had an eGFR greater than 90 mL/min/1.73m2.
Each participant received each of the three medications as second- or third-line oral therapy in random order – in one of six possible sequences – for 16 weeks each, with no washout period in between (to prevent dropouts due to hyperglycemia). Thus, each participant acted as their own control.
A total of 458 participants completed all three study periods.
The drugs work differently in different patient groups
Without stratification by patient type, there was no overall difference in A1c reduction between the three therapies, with all achieving about 59-60 mmol/mol (7.5-7.6%) from a baseline average of 69 mmol/mol (8.9%).
But when stratified by BMI, A1c was 1.48 mmol/mol higher with pioglitazone versus sitagliptin in the group with BMI less than 30 kg/m2 and 1.44 mmol/mol lower with pioglitazone versus sitagliptin in the group with BMI greater than 30 kg/m2, giving a significant overall difference of 2.92 mmol/mol (P = .003).
By eGFR stratification, A1c was 1.74 mmol/mol lower with sitagliptin than canagliflozin in the 60-90 mL/min/1.73m2 group and 1.08 mmol/mol higher in the greater than 90 mL/min/1.73m2 group, giving a significant difference of 2.83 mmol/mol (P = .002).
“So, if we were to treat the patients with the drug that is optimal for their strata ... this would lead to a benefit of about 3 mmol/mol compared to if those patients were treated with the other drug,” Dr. Shields said.
By BMI, there were no significant differences by drug or strata for tolerability, defined as staying on drug for at least 12 weeks (P = .2), nor in the percentage of patients reporting at least one hypoglycemic episode (P = .6).
However, pioglitazone was associated with higher weight gain in both BMI groups, resulting in a 0.93 kg difference overall (P < .001), although it was higher in the higher BMI group (1.9 vs. 0.97 kg).
Similarly, by eGFR there were no differences in tolerability or hypoglycemic episodes between sitagliptin and canagliflozin (P = .09 and P = .6, respectively). And here, there were no differences in weight (P = .6).
Patients compared their own experiences with each drug
Patients were asked about their drug preferences after being reminded about their own changes in A1c and weight with each one. The result was a split: 25.8% picked pioglitazone, 34.8% sitagliptin, and 38.7% canagliflozin.
Looking at study outcomes by therapy, pioglitazone had the lowest rate of nontolerability but the highest weight gain, sitagliptin had the highest nontolerability but the lowest number of side effects, while canagliflozin had the highest number of reported side effects but the lowest weight gain.
Patients’ preferred drugs were associated with the lowest A1c and the fewest side effects for each group. Interestingly, pioglitazone was associated with the highest weight on therapy regardless of preference, so that even those who preferred pioglitazone had a higher weight than they did with the other two drugs.
In response to an audience question about durability of the results given the relatively short trial periods, Mr. Hattersley said: “We’re following up these patients who have chosen their drug, and on the whole, their primary care doctor agreed with them. So we’re following that up as a prospective cohort. We’re looking at tolerance and response and also to see if they’re still happy with that drug. That will be a future analysis.”
The TriMASTER data will be submitted for publication soon.
TriMASTER was funded by the UK Medical Research Council. Mr. Hattersley and Dr. Shields have reported no relevant financial relationships. Dr. Kistorp has reported receiving honoraria from and/or is on advisory boards for AstraZeneca, Novo Nordisk, Boehringer Ingelheim, MSD, Otsuka Pharma, and Chiesi.
A version of this article first appeared on Medscape.com.
A uniquely-designed three-drug study has demonstrated that individual clinical characteristics, including patient preference, can be used to guide medication choice in type 2 diabetes.
Results from the TriMaster trial using sitagliptin, pioglitazone, and canagliflozin as second- or third-line therapy in a total of 525 patients with type 2 diabetes were presented September 29 at the virtual European Association for the Study of Diabetes (EASD) 2021 Annual Meeting.
TriMaster is a phase 4, multicenter, randomized, double-blind, 12-month crossover trial examining the effects of all three drugs in subgroups of patients with type 2 diabetes who hadn’t achieved target glucose levels with metformin alone or combined with a sulfonylurea.
While all three drugs lowered glucose similarly overall, pioglitazone did so more effectively among patients with a body mass index (BMI) above 30 kg/m2, while sitagliptin worked better in those with a BMI less than 30 kg/m2. However, pioglitazone resulted in more weight gain.
In a second comparison, canagliflozin (a sodium-glucose cotransporter 2 [SGLT2] inhibitor) was more effective than sitagliptin (a dipeptidyl peptidase-4 [DPP-4] inhibitor) in lowering glucose among patients with an estimated glomerular filtration rate (eGFR) above 90 mL/min/1.73m2, while sitagliptin actually lowered glucose better among individuals with an eGFR 60-90 mL/min/1.73m2 than canagliflozin.
And when participants were asked which drug they preferred, the results were split nearly evenly among the three, correlating with how well the drug worked and the side effect profile for each individual.
“We proved a precision approach worked using predefined clinical criteria to define groups of patients where one drug is better than another. This is the first-ever proof of a precision medicine approach in type 2 diabetes,” chief investigator Andrew Hattersley, DM, professor of molecular medicine at the University of Exeter, U.K., told this news organization.
But, he stressed, “These results do not mean all patients with BMI above 30 should have pioglitazone or that all patients with an eGFR 60-90 should have a DPP-4 inhibitor.”
“Drug choice will need to consider other priorities than glycemia ... Patients with heart failure, cardiovascular disease, and chronic kidney disease should be prescribed SGLT2 inhibitors,” he noted. And “some patients will need to avoid specific drugs due to likely side effects.”
‘Modern era’ study used older drugs
Independent commentator Caroline M. Kistorp, MD, PhD, professor of endocrinology at University Hospital Copenhagen, congratulated the investigators for “moving precision medicine from the retrospective analysis of existing data into the modern era of evidence-based medicine with this randomized clinical trial in patients with type 2 diabetes ... Starting this trial back in 2015 was really ahead of their time.”
However, she questioned the use of a thiazolidinedione (TZD), pioglitazone, in the trial, as they are no longer used in many parts of the world in favor of more “modern” glucose-lowering drugs.
“I’m thinking of GLP-1 receptor agonists, especially if you want to treat type 2 diabetes patients who are obese with a BMI over 30 ... I acknowledge that there is a cost issue, but I still think we should try to give our patients the best treatments, so that’s why I’m not sure how much the [TZDs] will be used in the future, even with this trial,” she said.
Dr. Kistorp also noted the trial didn’t include cardiovascular disease outcomes, for which most SGLT2 inhibitors have shown benefit.
“We have to discuss and consider whether A1c is the most important parameter for these patients ... especially looking at their cardiovascular outcomes.”
Mr. Hattersley responded that the study was designed in 2015, prior to the landmark EMPA-REG OUTCOME trial that began the shift toward use of SGLT2 inhibitors for cardiovascular and kidney disease reduction in addition to glycemic control in the clinical management of type 2 diabetes.
“We will report the cardiovascular profiles, but it wasn’t a specific thing because at that time the evidence didn’t exist, so it wasn’t in our protocol,” he explained.
Regarding pioglitazone, he acknowledged that although it may be an alternative to insulin for some patients, “I think for most people you won’t be considering it in clinical practice,” but because it has a very different mechanism from the other two study drugs, “it did give the greater chance of differential effects ... Partly, what we’re really trying to do is test the question of whether precision medicine exists and can we do it.”
Unique study design had each patient act as their own control
Trial statistician Beverley Shields, PhD, of the University of Exeter, U.K., reported the results. The 525 participants with type 2 diabetes were aged 30-79 years and had A1c levels above 58 mmol/mol (7.5%) but not greater than 110 mmol/mol (12.2%) with metformin alone or combined with a sulfonylurea. Just over half (58%) had a BMI above 30 kg/m2 and 52% had an eGFR greater than 90 mL/min/1.73m2.
Each participant received each of the three medications as second- or third-line oral therapy in random order – in one of six possible sequences – for 16 weeks each, with no washout period in between (to prevent dropouts due to hyperglycemia). Thus, each participant acted as their own control.
A total of 458 participants completed all three study periods.
The drugs work differently in different patient groups
Without stratification by patient type, there was no overall difference in A1c reduction between the three therapies, with all achieving about 59-60 mmol/mol (7.5-7.6%) from a baseline average of 69 mmol/mol (8.9%).
But when stratified by BMI, A1c was 1.48 mmol/mol higher with pioglitazone versus sitagliptin in the group with BMI less than 30 kg/m2 and 1.44 mmol/mol lower with pioglitazone versus sitagliptin in the group with BMI greater than 30 kg/m2, giving a significant overall difference of 2.92 mmol/mol (P = .003).
By eGFR stratification, A1c was 1.74 mmol/mol lower with sitagliptin than canagliflozin in the 60-90 mL/min/1.73m2 group and 1.08 mmol/mol higher in the greater than 90 mL/min/1.73m2 group, giving a significant difference of 2.83 mmol/mol (P = .002).
“So, if we were to treat the patients with the drug that is optimal for their strata ... this would lead to a benefit of about 3 mmol/mol compared to if those patients were treated with the other drug,” Dr. Shields said.
By BMI, there were no significant differences by drug or strata for tolerability, defined as staying on drug for at least 12 weeks (P = .2), nor in the percentage of patients reporting at least one hypoglycemic episode (P = .6).
However, pioglitazone was associated with higher weight gain in both BMI groups, resulting in a 0.93 kg difference overall (P < .001), although it was higher in the higher BMI group (1.9 vs. 0.97 kg).
Similarly, by eGFR there were no differences in tolerability or hypoglycemic episodes between sitagliptin and canagliflozin (P = .09 and P = .6, respectively). And here, there were no differences in weight (P = .6).
Patients compared their own experiences with each drug
Patients were asked about their drug preferences after being reminded about their own changes in A1c and weight with each one. The result was a split: 25.8% picked pioglitazone, 34.8% sitagliptin, and 38.7% canagliflozin.
Looking at study outcomes by therapy, pioglitazone had the lowest rate of nontolerability but the highest weight gain, sitagliptin had the highest nontolerability but the lowest number of side effects, while canagliflozin had the highest number of reported side effects but the lowest weight gain.
Patients’ preferred drugs were associated with the lowest A1c and the fewest side effects for each group. Interestingly, pioglitazone was associated with the highest weight on therapy regardless of preference, so that even those who preferred pioglitazone had a higher weight than they did with the other two drugs.
In response to an audience question about durability of the results given the relatively short trial periods, Mr. Hattersley said: “We’re following up these patients who have chosen their drug, and on the whole, their primary care doctor agreed with them. So we’re following that up as a prospective cohort. We’re looking at tolerance and response and also to see if they’re still happy with that drug. That will be a future analysis.”
The TriMASTER data will be submitted for publication soon.
TriMASTER was funded by the UK Medical Research Council. Mr. Hattersley and Dr. Shields have reported no relevant financial relationships. Dr. Kistorp has reported receiving honoraria from and/or is on advisory boards for AstraZeneca, Novo Nordisk, Boehringer Ingelheim, MSD, Otsuka Pharma, and Chiesi.
A version of this article first appeared on Medscape.com.
A uniquely-designed three-drug study has demonstrated that individual clinical characteristics, including patient preference, can be used to guide medication choice in type 2 diabetes.
Results from the TriMaster trial using sitagliptin, pioglitazone, and canagliflozin as second- or third-line therapy in a total of 525 patients with type 2 diabetes were presented September 29 at the virtual European Association for the Study of Diabetes (EASD) 2021 Annual Meeting.
TriMaster is a phase 4, multicenter, randomized, double-blind, 12-month crossover trial examining the effects of all three drugs in subgroups of patients with type 2 diabetes who hadn’t achieved target glucose levels with metformin alone or combined with a sulfonylurea.
While all three drugs lowered glucose similarly overall, pioglitazone did so more effectively among patients with a body mass index (BMI) above 30 kg/m2, while sitagliptin worked better in those with a BMI less than 30 kg/m2. However, pioglitazone resulted in more weight gain.
In a second comparison, canagliflozin (a sodium-glucose cotransporter 2 [SGLT2] inhibitor) was more effective than sitagliptin (a dipeptidyl peptidase-4 [DPP-4] inhibitor) in lowering glucose among patients with an estimated glomerular filtration rate (eGFR) above 90 mL/min/1.73m2, while sitagliptin actually lowered glucose better among individuals with an eGFR 60-90 mL/min/1.73m2 than canagliflozin.
And when participants were asked which drug they preferred, the results were split nearly evenly among the three, correlating with how well the drug worked and the side effect profile for each individual.
“We proved a precision approach worked using predefined clinical criteria to define groups of patients where one drug is better than another. This is the first-ever proof of a precision medicine approach in type 2 diabetes,” chief investigator Andrew Hattersley, DM, professor of molecular medicine at the University of Exeter, U.K., told this news organization.
But, he stressed, “These results do not mean all patients with BMI above 30 should have pioglitazone or that all patients with an eGFR 60-90 should have a DPP-4 inhibitor.”
“Drug choice will need to consider other priorities than glycemia ... Patients with heart failure, cardiovascular disease, and chronic kidney disease should be prescribed SGLT2 inhibitors,” he noted. And “some patients will need to avoid specific drugs due to likely side effects.”
‘Modern era’ study used older drugs
Independent commentator Caroline M. Kistorp, MD, PhD, professor of endocrinology at University Hospital Copenhagen, congratulated the investigators for “moving precision medicine from the retrospective analysis of existing data into the modern era of evidence-based medicine with this randomized clinical trial in patients with type 2 diabetes ... Starting this trial back in 2015 was really ahead of their time.”
However, she questioned the use of a thiazolidinedione (TZD), pioglitazone, in the trial, as they are no longer used in many parts of the world in favor of more “modern” glucose-lowering drugs.
“I’m thinking of GLP-1 receptor agonists, especially if you want to treat type 2 diabetes patients who are obese with a BMI over 30 ... I acknowledge that there is a cost issue, but I still think we should try to give our patients the best treatments, so that’s why I’m not sure how much the [TZDs] will be used in the future, even with this trial,” she said.
Dr. Kistorp also noted the trial didn’t include cardiovascular disease outcomes, for which most SGLT2 inhibitors have shown benefit.
“We have to discuss and consider whether A1c is the most important parameter for these patients ... especially looking at their cardiovascular outcomes.”
Mr. Hattersley responded that the study was designed in 2015, prior to the landmark EMPA-REG OUTCOME trial that began the shift toward use of SGLT2 inhibitors for cardiovascular and kidney disease reduction in addition to glycemic control in the clinical management of type 2 diabetes.
“We will report the cardiovascular profiles, but it wasn’t a specific thing because at that time the evidence didn’t exist, so it wasn’t in our protocol,” he explained.
Regarding pioglitazone, he acknowledged that although it may be an alternative to insulin for some patients, “I think for most people you won’t be considering it in clinical practice,” but because it has a very different mechanism from the other two study drugs, “it did give the greater chance of differential effects ... Partly, what we’re really trying to do is test the question of whether precision medicine exists and can we do it.”
Unique study design had each patient act as their own control
Trial statistician Beverley Shields, PhD, of the University of Exeter, U.K., reported the results. The 525 participants with type 2 diabetes were aged 30-79 years and had A1c levels above 58 mmol/mol (7.5%) but not greater than 110 mmol/mol (12.2%) with metformin alone or combined with a sulfonylurea. Just over half (58%) had a BMI above 30 kg/m2 and 52% had an eGFR greater than 90 mL/min/1.73m2.
Each participant received each of the three medications as second- or third-line oral therapy in random order – in one of six possible sequences – for 16 weeks each, with no washout period in between (to prevent dropouts due to hyperglycemia). Thus, each participant acted as their own control.
A total of 458 participants completed all three study periods.
The drugs work differently in different patient groups
Without stratification by patient type, there was no overall difference in A1c reduction between the three therapies, with all achieving about 59-60 mmol/mol (7.5-7.6%) from a baseline average of 69 mmol/mol (8.9%).
But when stratified by BMI, A1c was 1.48 mmol/mol higher with pioglitazone versus sitagliptin in the group with BMI less than 30 kg/m2 and 1.44 mmol/mol lower with pioglitazone versus sitagliptin in the group with BMI greater than 30 kg/m2, giving a significant overall difference of 2.92 mmol/mol (P = .003).
By eGFR stratification, A1c was 1.74 mmol/mol lower with sitagliptin than canagliflozin in the 60-90 mL/min/1.73m2 group and 1.08 mmol/mol higher in the greater than 90 mL/min/1.73m2 group, giving a significant difference of 2.83 mmol/mol (P = .002).
“So, if we were to treat the patients with the drug that is optimal for their strata ... this would lead to a benefit of about 3 mmol/mol compared to if those patients were treated with the other drug,” Dr. Shields said.
By BMI, there were no significant differences by drug or strata for tolerability, defined as staying on drug for at least 12 weeks (P = .2), nor in the percentage of patients reporting at least one hypoglycemic episode (P = .6).
However, pioglitazone was associated with higher weight gain in both BMI groups, resulting in a 0.93 kg difference overall (P < .001), although it was higher in the higher BMI group (1.9 vs. 0.97 kg).
Similarly, by eGFR there were no differences in tolerability or hypoglycemic episodes between sitagliptin and canagliflozin (P = .09 and P = .6, respectively). And here, there were no differences in weight (P = .6).
Patients compared their own experiences with each drug
Patients were asked about their drug preferences after being reminded about their own changes in A1c and weight with each one. The result was a split: 25.8% picked pioglitazone, 34.8% sitagliptin, and 38.7% canagliflozin.
Looking at study outcomes by therapy, pioglitazone had the lowest rate of nontolerability but the highest weight gain, sitagliptin had the highest nontolerability but the lowest number of side effects, while canagliflozin had the highest number of reported side effects but the lowest weight gain.
Patients’ preferred drugs were associated with the lowest A1c and the fewest side effects for each group. Interestingly, pioglitazone was associated with the highest weight on therapy regardless of preference, so that even those who preferred pioglitazone had a higher weight than they did with the other two drugs.
In response to an audience question about durability of the results given the relatively short trial periods, Mr. Hattersley said: “We’re following up these patients who have chosen their drug, and on the whole, their primary care doctor agreed with them. So we’re following that up as a prospective cohort. We’re looking at tolerance and response and also to see if they’re still happy with that drug. That will be a future analysis.”
The TriMASTER data will be submitted for publication soon.
TriMASTER was funded by the UK Medical Research Council. Mr. Hattersley and Dr. Shields have reported no relevant financial relationships. Dr. Kistorp has reported receiving honoraria from and/or is on advisory boards for AstraZeneca, Novo Nordisk, Boehringer Ingelheim, MSD, Otsuka Pharma, and Chiesi.
A version of this article first appeared on Medscape.com.
Age, C-reactive protein predict COVID-19 death in diabetes
The data, from the retrospective ACCREDIT cohort study, were presented at the virtual annual meeting of the European Association for the Study of Diabetes (EASD 2021) by Daniel Kevin Llanera, MD.
The combination of older age and high levels of the inflammatory marker CRP were linked to a tripled risk for death by day 7 after hospitalization for COVID-19 among people with diabetes. But, in contrast to other studies, recent A1c and body mass index did not predict COVID-19 outcomes.
“Both of these variables are easily available upon admission to hospital,” Dr. Llanera, who now works at Imperial College, London, said in an EASD press release.
“This means we can easily identify patients early on in their hospital stay who will likely require more aggressive interventions to try and improve survival.”
“It makes sense that CRP and age are important,” said Simon Heller, MB BChir, DM, of the University of Sheffield, England. “It may be that diabetes alone overwhelmed the additional effects of obesity and A1c.
“Certainly in other studies, age was the overwhelming bad prognostic sign among people with diabetes, and perhaps long-term diabetes has effects on the immune system which we haven’t yet identified.”
Kidney disease in younger patients also linked to poorer outcomes
The study, conducted when Dr. Llanera worked for the Countess of Chester NHS Foundation Trust, involved 1,004 patients with diabetes admitted with COVID-19 to seven hospitals in northwest England from Jan. 1 through June 30, 2020. The patients were a mean age of 74.1 years, 60.7% were male, and 45% were in the most deprived quintile based on the U.K. government deprivation index. Overall, 56.2% had macrovascular complications and 49.6% had microvascular complications.
They had a median BMI of 27.6 kg/m2, which is lower than that reported in previous studies and might explain the difference, Dr. Llanera noted.
The primary outcome, death within 7 days of admission, occurred in 24%. By day 30, 33% had died. These rates are higher than the rate found in previous studies, possibly because of greater socioeconomic deprivation and older age of the population, Dr. Llanera speculated.
A total of 7.5% of patients received intensive care by day 7 and 9.8% required intravenous insulin infusions.
On univariate analysis, insulin infusion was found to be protective, with those receiving it half as likely to die as those who didn’t need IV insulin (odds ratio [OR], 0.5).
In contrast, chronic kidney disease in people younger than 70 years increased the risk of death more than twofold (OR, 2.74), as did type 2 diabetes compared with other diabetes types (OR, 2.52).
As in previous studies, use of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers were not associated with COVID-19 outcomes, nor was the presence of diabetes-related complications.
In multivariate analysis, CRP and age emerged as the most significant predictors of the primary outcome, with those deemed high risk by a logistic regression model having an OR of 3.44 for death by day 7 compared with those at lower risk based on the two factors.
Data for glycemic control during the time of hospitalization weren’t available for this study, Dr. Llanera said in response to a question.
“We didn’t look into glycemic control during admission, just at entry, so I can’t answer whether strict glucose control is of benefit. I think it’s worth exploring further whether the use of IV insulin may be of benefit.”
Dr. Llanera also pointed out that people with diabetic kidney disease are in a chronic proinflammatory state and have immune dysregulation, thus potentially hindering their ability to “fight off” the virus.
“In addition, ACE2 receptors are upregulated in the kidneys of patients with diabetic kidney disease. These are molecules that facilitate entry of SARS-CoV-2 into the cells. This may lead to direct attack of the kidneys by the virus, possibly leading to worse overall outcomes,” he said.
Dr. Llanera has reported no relevant financial relationships. Dr. Heller has reported serving as consultant or speaker for Novo Nordisk, Eli Lilly, Sanofi Aventis, Mannkind, Zealand, MSD, and Boehringer Ingelheim.
A version of this article first appeared on Medscape.com.
The data, from the retrospective ACCREDIT cohort study, were presented at the virtual annual meeting of the European Association for the Study of Diabetes (EASD 2021) by Daniel Kevin Llanera, MD.
The combination of older age and high levels of the inflammatory marker CRP were linked to a tripled risk for death by day 7 after hospitalization for COVID-19 among people with diabetes. But, in contrast to other studies, recent A1c and body mass index did not predict COVID-19 outcomes.
“Both of these variables are easily available upon admission to hospital,” Dr. Llanera, who now works at Imperial College, London, said in an EASD press release.
“This means we can easily identify patients early on in their hospital stay who will likely require more aggressive interventions to try and improve survival.”
“It makes sense that CRP and age are important,” said Simon Heller, MB BChir, DM, of the University of Sheffield, England. “It may be that diabetes alone overwhelmed the additional effects of obesity and A1c.
“Certainly in other studies, age was the overwhelming bad prognostic sign among people with diabetes, and perhaps long-term diabetes has effects on the immune system which we haven’t yet identified.”
Kidney disease in younger patients also linked to poorer outcomes
The study, conducted when Dr. Llanera worked for the Countess of Chester NHS Foundation Trust, involved 1,004 patients with diabetes admitted with COVID-19 to seven hospitals in northwest England from Jan. 1 through June 30, 2020. The patients were a mean age of 74.1 years, 60.7% were male, and 45% were in the most deprived quintile based on the U.K. government deprivation index. Overall, 56.2% had macrovascular complications and 49.6% had microvascular complications.
They had a median BMI of 27.6 kg/m2, which is lower than that reported in previous studies and might explain the difference, Dr. Llanera noted.
The primary outcome, death within 7 days of admission, occurred in 24%. By day 30, 33% had died. These rates are higher than the rate found in previous studies, possibly because of greater socioeconomic deprivation and older age of the population, Dr. Llanera speculated.
A total of 7.5% of patients received intensive care by day 7 and 9.8% required intravenous insulin infusions.
On univariate analysis, insulin infusion was found to be protective, with those receiving it half as likely to die as those who didn’t need IV insulin (odds ratio [OR], 0.5).
In contrast, chronic kidney disease in people younger than 70 years increased the risk of death more than twofold (OR, 2.74), as did type 2 diabetes compared with other diabetes types (OR, 2.52).
As in previous studies, use of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers were not associated with COVID-19 outcomes, nor was the presence of diabetes-related complications.
In multivariate analysis, CRP and age emerged as the most significant predictors of the primary outcome, with those deemed high risk by a logistic regression model having an OR of 3.44 for death by day 7 compared with those at lower risk based on the two factors.
Data for glycemic control during the time of hospitalization weren’t available for this study, Dr. Llanera said in response to a question.
“We didn’t look into glycemic control during admission, just at entry, so I can’t answer whether strict glucose control is of benefit. I think it’s worth exploring further whether the use of IV insulin may be of benefit.”
Dr. Llanera also pointed out that people with diabetic kidney disease are in a chronic proinflammatory state and have immune dysregulation, thus potentially hindering their ability to “fight off” the virus.
“In addition, ACE2 receptors are upregulated in the kidneys of patients with diabetic kidney disease. These are molecules that facilitate entry of SARS-CoV-2 into the cells. This may lead to direct attack of the kidneys by the virus, possibly leading to worse overall outcomes,” he said.
Dr. Llanera has reported no relevant financial relationships. Dr. Heller has reported serving as consultant or speaker for Novo Nordisk, Eli Lilly, Sanofi Aventis, Mannkind, Zealand, MSD, and Boehringer Ingelheim.
A version of this article first appeared on Medscape.com.
The data, from the retrospective ACCREDIT cohort study, were presented at the virtual annual meeting of the European Association for the Study of Diabetes (EASD 2021) by Daniel Kevin Llanera, MD.
The combination of older age and high levels of the inflammatory marker CRP were linked to a tripled risk for death by day 7 after hospitalization for COVID-19 among people with diabetes. But, in contrast to other studies, recent A1c and body mass index did not predict COVID-19 outcomes.
“Both of these variables are easily available upon admission to hospital,” Dr. Llanera, who now works at Imperial College, London, said in an EASD press release.
“This means we can easily identify patients early on in their hospital stay who will likely require more aggressive interventions to try and improve survival.”
“It makes sense that CRP and age are important,” said Simon Heller, MB BChir, DM, of the University of Sheffield, England. “It may be that diabetes alone overwhelmed the additional effects of obesity and A1c.
“Certainly in other studies, age was the overwhelming bad prognostic sign among people with diabetes, and perhaps long-term diabetes has effects on the immune system which we haven’t yet identified.”
Kidney disease in younger patients also linked to poorer outcomes
The study, conducted when Dr. Llanera worked for the Countess of Chester NHS Foundation Trust, involved 1,004 patients with diabetes admitted with COVID-19 to seven hospitals in northwest England from Jan. 1 through June 30, 2020. The patients were a mean age of 74.1 years, 60.7% were male, and 45% were in the most deprived quintile based on the U.K. government deprivation index. Overall, 56.2% had macrovascular complications and 49.6% had microvascular complications.
They had a median BMI of 27.6 kg/m2, which is lower than that reported in previous studies and might explain the difference, Dr. Llanera noted.
The primary outcome, death within 7 days of admission, occurred in 24%. By day 30, 33% had died. These rates are higher than the rate found in previous studies, possibly because of greater socioeconomic deprivation and older age of the population, Dr. Llanera speculated.
A total of 7.5% of patients received intensive care by day 7 and 9.8% required intravenous insulin infusions.
On univariate analysis, insulin infusion was found to be protective, with those receiving it half as likely to die as those who didn’t need IV insulin (odds ratio [OR], 0.5).
In contrast, chronic kidney disease in people younger than 70 years increased the risk of death more than twofold (OR, 2.74), as did type 2 diabetes compared with other diabetes types (OR, 2.52).
As in previous studies, use of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers were not associated with COVID-19 outcomes, nor was the presence of diabetes-related complications.
In multivariate analysis, CRP and age emerged as the most significant predictors of the primary outcome, with those deemed high risk by a logistic regression model having an OR of 3.44 for death by day 7 compared with those at lower risk based on the two factors.
Data for glycemic control during the time of hospitalization weren’t available for this study, Dr. Llanera said in response to a question.
“We didn’t look into glycemic control during admission, just at entry, so I can’t answer whether strict glucose control is of benefit. I think it’s worth exploring further whether the use of IV insulin may be of benefit.”
Dr. Llanera also pointed out that people with diabetic kidney disease are in a chronic proinflammatory state and have immune dysregulation, thus potentially hindering their ability to “fight off” the virus.
“In addition, ACE2 receptors are upregulated in the kidneys of patients with diabetic kidney disease. These are molecules that facilitate entry of SARS-CoV-2 into the cells. This may lead to direct attack of the kidneys by the virus, possibly leading to worse overall outcomes,” he said.
Dr. Llanera has reported no relevant financial relationships. Dr. Heller has reported serving as consultant or speaker for Novo Nordisk, Eli Lilly, Sanofi Aventis, Mannkind, Zealand, MSD, and Boehringer Ingelheim.
A version of this article first appeared on Medscape.com.
EASD: Precision in diabetes management and impact of COVID-19
The annual meeting of the European Association for the Study of Diabetes 2021 will delve into individualized approaches in diabetes management, particularly with regard to tailoring drug therapy for type 2 diabetes and management of type 1 diabetes.
The virtual meeting, taking place Sept. 28 to Oct. 1 in Central European Summer Time, will feature results from TriMASTER (a three-way cross-over trial of precision medicine strategy of second-/third-line therapy in type 2 diabetes), new subgroup analyses from the GRADE (Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness) study, the final version of a consensus statement on type 1 diabetes management, and new data on the dual incretin agonist tirzepatide, as well as much more.
“I’m a strong believer in personalization. I don’t think the big blockbuster [drugs] will serve the entire community with diabetes. Even in type 1 diabetes, there’s evidence of heterogeneity. ... We need a better way to identify individual needs. I think that’s where we’re going. ... It’s one of the themes of the conference,” EASD President Stefano Del Prato, MD, professor of endocrinology at the University of Pisa (Italy), told this news organization.
He noted that EASD and the American Diabetes Association have recently teamed up with other organizations to form the Precision Medicine in Diabetes Initiative
As would be expected, the meeting will also feature numerous presentations on the COVID-19 pandemic, including studies looking at how people with COVID-19 and diabetes have fared; how the pandemic has affected diabetes care; and the still unclear impact of SARS-CoV-2 on pancreatic beta cells and whether, in some instances, it triggers new-onset diabetes.
New data from previously reported trials
There will be new data from several previously reported trials focusing on specific groups of patients with type 2 diabetes. One is the EMPEROR-Preserved study of empagliflozin (Jardiance) in individuals with heart failure and preserved ejection fraction. Initially presented in August 2021 at the annual congress of the European Society of Cardiology, the new data will focus on patient subpopulations, efficacy endpoints, and safety in patients with and without diabetes. A companion study, EMPEROR-Reduced, in those with heart failure and reduced ejection fraction, was presented at the ESC Congress in August 2020.
New findings will also be presented from the DAPA-CKD study of dapagliflozin (Farxiga) in patients with chronic kidney disease. The study was stopped early in March 2020 because of overwhelming efficacy of the drug in preventing CKD. Now, the data will be analyzed in terms of metabolic, nephrology, and cardiology parameters.
And from FIDELIO-DKD and FIGARO-DKD, trials of the nonsteroidal mineralocorticoid receptor antagonist finerenone (Kerendia), new data will also focus on a variety of subgroups of individuals with type 2 diabetes and chronic kidney disease.
“Our goal is to cover most aspects of what’s happening in the type 2 diabetes field,” EASD Honorary Secretary Mikael Rydén, MD, PhD, professor and senior consultant in endocrinology at the Karolinska Institute and Karolinska University Hospital, Stockholm, said in an interview.
Dr. Rydén, who chairs the meeting’s scientific program committee, added: “We can only focus on so much every year but we try to be active and changing from year to year. I’m convinced that a clinician or translational researcher will definitely have a number of very interesting symposia to follow and learn new things. If you follow all of these things, you will know a lot about what’s cooking in the diabetes world.”
Consensus on type 1 diabetes management: Special considerations
Both Dr. Del Prato and Dr. Rydén cited presentation of the new type 1 diabetes ADA/EASD consensus report as among the most clinically important of the conference. Initially presented in draft form at the ADA Scientific Sessions in June 2021, the document aims to move away from routinely applying principles derived from studies of patients with type 2 diabetes to those with type 1 diabetes, an autoimmune disease with unique characteristics.
The final version of the document is expected to include information on goals of therapy, glycemic targets, prevention and management of hypoglycemia and diabetic ketoacidosis, psychosocial care, and special populations, among other issues. It is also expected to include a section dedicated to adjunctive treatments beyond insulin, including metformin, pramlintide, glucagonlike peptide–1 agonists, and sodium-glucose cotransporter 2 inhibitors for certain patients.
Dr. Del Prato noted, “From a clinical point of view, this is quite an important step that two major organizations came together recommending some strategies for treating type 2 diabetes ... It really deals with a big problem and tries to provide the tools for improving homogenization of the treatment of type 1 diabetes across the different health systems.”
And Dr. Rydén commented: “I think it’s really important to have, since there’s been so much focus on type 2 diabetes for the last few years, and to have the ADA and EASD getting together and actually write this.”
But Dr. Rydén also pointed out that outcomes data are much more conclusive for drugs in type 2 diabetes to inform international guidelines, whereas “this is much more difficult to demonstrate with type 1 diabetes. With a new pump or [continuous glucose monitor (CGM)] you might show a reduction in [hemoglobin] A1c of X percent or X mmol/mol or hypoglycemia events, but it’s much harder to show improvements in hard outcomes like deaths and cardiovascular events. I’m really looking forward to having this presented.”
Diabetes in 2021: It’s personal
Several meeting sessions will specifically address precision medicine approaches, including the TriMASTER study, which aims to identify subgroups of patients with type 2 diabetes who respond well or poorly to particular drugs based on clinical characteristics so that treatments can be better targeted to individuals. In total, 600 patients with type 2 diabetes and suboptimal glycemic control with metformin were randomized to a dipeptidyl peptidase–4 inhibitor, an SGLT2 inhibitor, or thiazolidinedione (TZD).
According to Dr. Rydén, “The TriMASTER final results will be interesting. TZDs still have a place. ... You can’t give them to people with heart failure, but I think like a carpenter you have to have many tools in your toolbox. And I still think that there are some individuals who respond well to pioglitazone. [The study findings] could be influential, depending on the results.”
An EASD/ADA symposium entitled “Optimizing diabetes diagnosis, prevention, and care: Is precision medicine the answer?” will offer three distinct perspectives, with one speaker arguing it’s the future of diabetes medicine, another that it isn’t, and a third explaining that “the devil is in the details.”
The Diabetologia symposium will focus on a related concept: The use of artificial intelligence in diabetes research and care, with particular application to glucose control, neuropathy, and wound healing.
And during the 36th Camillo Golgi Lecture, kidney disease expert H.J. Lambers Heerspink, PhD, of the University of Groningen (the Netherlands), will speak about personalizing treatment for patients with type 2 diabetes, arguing that “the mean is meaningless.”
Next-generation incretin therapy: Is weight loss the treatment?
New data will continue the buzz from the ADA meeting surrounding tirzepatide, the dual GLP-1 receptor agonist and glucose-dependent insulinotropic polypeptide agent.
A session will add new data from SURPASS-3 CGM, looking at the effect of the drug captured by continuous glucose monitoring in patients with type 2 diabetes; SURPASS-3 MRI, examining the effect of the drug on liver fat content and abdominal adipose tissue; and SURPASS-4, investigating efficacy and safety of tirzepatide once-weekly versus insulin glargine in patients with type 2 diabetes and increased cardiovascular risk.
The drug is notable for its dramatic reductions in both A1c and weight, although questions remain about the incidence of gastrointestinal side effects and effects on long-term cardiovascular and renal outcomes.
Dr. Rydén commented: “Given its effects on A1c and body weight, we would expect a positive result, but one never knows. It’s at least safe, that’s for sure. I think this mode of action is extremely interesting.”
Dr. Del Prato noted that tirzepatide could also “open up a new area of intervention for type 1 diabetes. The initial data were promising. ... It’s worth keeping an eye on.”
A related symposium will address the future of incretin-based treatments overall, while the EASD-Lancet symposium will examine whether the treatment of obesity is the «future» of diabetes treatment.
COVID-19, hypoglycemia, bone, and much more
As always, there’s much more on the agenda. Other noteworthy sessions include those addressing hypoglycemia management; a joint EASD/European Society of Endocrinology session on diabetes and bone; a debate about whether women with diabetes are at higher cardiovascular risk than men; and in-hospital management of hyperglycemia.
A new feature of the meeting will be a daily roundup/wrap-up, where members of the program committee and speakers will summarize the day’s highlights. And another feature, “EASD e-Learning,” has been expanded to include more clinical topics around insulin use, nonalcoholic fatty liver disease, obesity, and neuropathy.
Overall, Dr. Del Prato said, “it’s a very populated program, with more than 700 presenters, 162 invited symposia speakers, and 53 chairs. It’s covering widely different areas from basic to clinical research. ... It’s a lot of stuff going on.”
Both Dr. Rydén and Dr. Del Prato have disclosures with multiple manufacturers of diabetes-related products.
A version of this article first appeared on Medscape.com.
The annual meeting of the European Association for the Study of Diabetes 2021 will delve into individualized approaches in diabetes management, particularly with regard to tailoring drug therapy for type 2 diabetes and management of type 1 diabetes.
The virtual meeting, taking place Sept. 28 to Oct. 1 in Central European Summer Time, will feature results from TriMASTER (a three-way cross-over trial of precision medicine strategy of second-/third-line therapy in type 2 diabetes), new subgroup analyses from the GRADE (Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness) study, the final version of a consensus statement on type 1 diabetes management, and new data on the dual incretin agonist tirzepatide, as well as much more.
“I’m a strong believer in personalization. I don’t think the big blockbuster [drugs] will serve the entire community with diabetes. Even in type 1 diabetes, there’s evidence of heterogeneity. ... We need a better way to identify individual needs. I think that’s where we’re going. ... It’s one of the themes of the conference,” EASD President Stefano Del Prato, MD, professor of endocrinology at the University of Pisa (Italy), told this news organization.
He noted that EASD and the American Diabetes Association have recently teamed up with other organizations to form the Precision Medicine in Diabetes Initiative
As would be expected, the meeting will also feature numerous presentations on the COVID-19 pandemic, including studies looking at how people with COVID-19 and diabetes have fared; how the pandemic has affected diabetes care; and the still unclear impact of SARS-CoV-2 on pancreatic beta cells and whether, in some instances, it triggers new-onset diabetes.
New data from previously reported trials
There will be new data from several previously reported trials focusing on specific groups of patients with type 2 diabetes. One is the EMPEROR-Preserved study of empagliflozin (Jardiance) in individuals with heart failure and preserved ejection fraction. Initially presented in August 2021 at the annual congress of the European Society of Cardiology, the new data will focus on patient subpopulations, efficacy endpoints, and safety in patients with and without diabetes. A companion study, EMPEROR-Reduced, in those with heart failure and reduced ejection fraction, was presented at the ESC Congress in August 2020.
New findings will also be presented from the DAPA-CKD study of dapagliflozin (Farxiga) in patients with chronic kidney disease. The study was stopped early in March 2020 because of overwhelming efficacy of the drug in preventing CKD. Now, the data will be analyzed in terms of metabolic, nephrology, and cardiology parameters.
And from FIDELIO-DKD and FIGARO-DKD, trials of the nonsteroidal mineralocorticoid receptor antagonist finerenone (Kerendia), new data will also focus on a variety of subgroups of individuals with type 2 diabetes and chronic kidney disease.
“Our goal is to cover most aspects of what’s happening in the type 2 diabetes field,” EASD Honorary Secretary Mikael Rydén, MD, PhD, professor and senior consultant in endocrinology at the Karolinska Institute and Karolinska University Hospital, Stockholm, said in an interview.
Dr. Rydén, who chairs the meeting’s scientific program committee, added: “We can only focus on so much every year but we try to be active and changing from year to year. I’m convinced that a clinician or translational researcher will definitely have a number of very interesting symposia to follow and learn new things. If you follow all of these things, you will know a lot about what’s cooking in the diabetes world.”
Consensus on type 1 diabetes management: Special considerations
Both Dr. Del Prato and Dr. Rydén cited presentation of the new type 1 diabetes ADA/EASD consensus report as among the most clinically important of the conference. Initially presented in draft form at the ADA Scientific Sessions in June 2021, the document aims to move away from routinely applying principles derived from studies of patients with type 2 diabetes to those with type 1 diabetes, an autoimmune disease with unique characteristics.
The final version of the document is expected to include information on goals of therapy, glycemic targets, prevention and management of hypoglycemia and diabetic ketoacidosis, psychosocial care, and special populations, among other issues. It is also expected to include a section dedicated to adjunctive treatments beyond insulin, including metformin, pramlintide, glucagonlike peptide–1 agonists, and sodium-glucose cotransporter 2 inhibitors for certain patients.
Dr. Del Prato noted, “From a clinical point of view, this is quite an important step that two major organizations came together recommending some strategies for treating type 2 diabetes ... It really deals with a big problem and tries to provide the tools for improving homogenization of the treatment of type 1 diabetes across the different health systems.”
And Dr. Rydén commented: “I think it’s really important to have, since there’s been so much focus on type 2 diabetes for the last few years, and to have the ADA and EASD getting together and actually write this.”
But Dr. Rydén also pointed out that outcomes data are much more conclusive for drugs in type 2 diabetes to inform international guidelines, whereas “this is much more difficult to demonstrate with type 1 diabetes. With a new pump or [continuous glucose monitor (CGM)] you might show a reduction in [hemoglobin] A1c of X percent or X mmol/mol or hypoglycemia events, but it’s much harder to show improvements in hard outcomes like deaths and cardiovascular events. I’m really looking forward to having this presented.”
Diabetes in 2021: It’s personal
Several meeting sessions will specifically address precision medicine approaches, including the TriMASTER study, which aims to identify subgroups of patients with type 2 diabetes who respond well or poorly to particular drugs based on clinical characteristics so that treatments can be better targeted to individuals. In total, 600 patients with type 2 diabetes and suboptimal glycemic control with metformin were randomized to a dipeptidyl peptidase–4 inhibitor, an SGLT2 inhibitor, or thiazolidinedione (TZD).
According to Dr. Rydén, “The TriMASTER final results will be interesting. TZDs still have a place. ... You can’t give them to people with heart failure, but I think like a carpenter you have to have many tools in your toolbox. And I still think that there are some individuals who respond well to pioglitazone. [The study findings] could be influential, depending on the results.”
An EASD/ADA symposium entitled “Optimizing diabetes diagnosis, prevention, and care: Is precision medicine the answer?” will offer three distinct perspectives, with one speaker arguing it’s the future of diabetes medicine, another that it isn’t, and a third explaining that “the devil is in the details.”
The Diabetologia symposium will focus on a related concept: The use of artificial intelligence in diabetes research and care, with particular application to glucose control, neuropathy, and wound healing.
And during the 36th Camillo Golgi Lecture, kidney disease expert H.J. Lambers Heerspink, PhD, of the University of Groningen (the Netherlands), will speak about personalizing treatment for patients with type 2 diabetes, arguing that “the mean is meaningless.”
Next-generation incretin therapy: Is weight loss the treatment?
New data will continue the buzz from the ADA meeting surrounding tirzepatide, the dual GLP-1 receptor agonist and glucose-dependent insulinotropic polypeptide agent.
A session will add new data from SURPASS-3 CGM, looking at the effect of the drug captured by continuous glucose monitoring in patients with type 2 diabetes; SURPASS-3 MRI, examining the effect of the drug on liver fat content and abdominal adipose tissue; and SURPASS-4, investigating efficacy and safety of tirzepatide once-weekly versus insulin glargine in patients with type 2 diabetes and increased cardiovascular risk.
The drug is notable for its dramatic reductions in both A1c and weight, although questions remain about the incidence of gastrointestinal side effects and effects on long-term cardiovascular and renal outcomes.
Dr. Rydén commented: “Given its effects on A1c and body weight, we would expect a positive result, but one never knows. It’s at least safe, that’s for sure. I think this mode of action is extremely interesting.”
Dr. Del Prato noted that tirzepatide could also “open up a new area of intervention for type 1 diabetes. The initial data were promising. ... It’s worth keeping an eye on.”
A related symposium will address the future of incretin-based treatments overall, while the EASD-Lancet symposium will examine whether the treatment of obesity is the «future» of diabetes treatment.
COVID-19, hypoglycemia, bone, and much more
As always, there’s much more on the agenda. Other noteworthy sessions include those addressing hypoglycemia management; a joint EASD/European Society of Endocrinology session on diabetes and bone; a debate about whether women with diabetes are at higher cardiovascular risk than men; and in-hospital management of hyperglycemia.
A new feature of the meeting will be a daily roundup/wrap-up, where members of the program committee and speakers will summarize the day’s highlights. And another feature, “EASD e-Learning,” has been expanded to include more clinical topics around insulin use, nonalcoholic fatty liver disease, obesity, and neuropathy.
Overall, Dr. Del Prato said, “it’s a very populated program, with more than 700 presenters, 162 invited symposia speakers, and 53 chairs. It’s covering widely different areas from basic to clinical research. ... It’s a lot of stuff going on.”
Both Dr. Rydén and Dr. Del Prato have disclosures with multiple manufacturers of diabetes-related products.
A version of this article first appeared on Medscape.com.
The annual meeting of the European Association for the Study of Diabetes 2021 will delve into individualized approaches in diabetes management, particularly with regard to tailoring drug therapy for type 2 diabetes and management of type 1 diabetes.
The virtual meeting, taking place Sept. 28 to Oct. 1 in Central European Summer Time, will feature results from TriMASTER (a three-way cross-over trial of precision medicine strategy of second-/third-line therapy in type 2 diabetes), new subgroup analyses from the GRADE (Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness) study, the final version of a consensus statement on type 1 diabetes management, and new data on the dual incretin agonist tirzepatide, as well as much more.
“I’m a strong believer in personalization. I don’t think the big blockbuster [drugs] will serve the entire community with diabetes. Even in type 1 diabetes, there’s evidence of heterogeneity. ... We need a better way to identify individual needs. I think that’s where we’re going. ... It’s one of the themes of the conference,” EASD President Stefano Del Prato, MD, professor of endocrinology at the University of Pisa (Italy), told this news organization.
He noted that EASD and the American Diabetes Association have recently teamed up with other organizations to form the Precision Medicine in Diabetes Initiative
As would be expected, the meeting will also feature numerous presentations on the COVID-19 pandemic, including studies looking at how people with COVID-19 and diabetes have fared; how the pandemic has affected diabetes care; and the still unclear impact of SARS-CoV-2 on pancreatic beta cells and whether, in some instances, it triggers new-onset diabetes.
New data from previously reported trials
There will be new data from several previously reported trials focusing on specific groups of patients with type 2 diabetes. One is the EMPEROR-Preserved study of empagliflozin (Jardiance) in individuals with heart failure and preserved ejection fraction. Initially presented in August 2021 at the annual congress of the European Society of Cardiology, the new data will focus on patient subpopulations, efficacy endpoints, and safety in patients with and without diabetes. A companion study, EMPEROR-Reduced, in those with heart failure and reduced ejection fraction, was presented at the ESC Congress in August 2020.
New findings will also be presented from the DAPA-CKD study of dapagliflozin (Farxiga) in patients with chronic kidney disease. The study was stopped early in March 2020 because of overwhelming efficacy of the drug in preventing CKD. Now, the data will be analyzed in terms of metabolic, nephrology, and cardiology parameters.
And from FIDELIO-DKD and FIGARO-DKD, trials of the nonsteroidal mineralocorticoid receptor antagonist finerenone (Kerendia), new data will also focus on a variety of subgroups of individuals with type 2 diabetes and chronic kidney disease.
“Our goal is to cover most aspects of what’s happening in the type 2 diabetes field,” EASD Honorary Secretary Mikael Rydén, MD, PhD, professor and senior consultant in endocrinology at the Karolinska Institute and Karolinska University Hospital, Stockholm, said in an interview.
Dr. Rydén, who chairs the meeting’s scientific program committee, added: “We can only focus on so much every year but we try to be active and changing from year to year. I’m convinced that a clinician or translational researcher will definitely have a number of very interesting symposia to follow and learn new things. If you follow all of these things, you will know a lot about what’s cooking in the diabetes world.”
Consensus on type 1 diabetes management: Special considerations
Both Dr. Del Prato and Dr. Rydén cited presentation of the new type 1 diabetes ADA/EASD consensus report as among the most clinically important of the conference. Initially presented in draft form at the ADA Scientific Sessions in June 2021, the document aims to move away from routinely applying principles derived from studies of patients with type 2 diabetes to those with type 1 diabetes, an autoimmune disease with unique characteristics.
The final version of the document is expected to include information on goals of therapy, glycemic targets, prevention and management of hypoglycemia and diabetic ketoacidosis, psychosocial care, and special populations, among other issues. It is also expected to include a section dedicated to adjunctive treatments beyond insulin, including metformin, pramlintide, glucagonlike peptide–1 agonists, and sodium-glucose cotransporter 2 inhibitors for certain patients.
Dr. Del Prato noted, “From a clinical point of view, this is quite an important step that two major organizations came together recommending some strategies for treating type 2 diabetes ... It really deals with a big problem and tries to provide the tools for improving homogenization of the treatment of type 1 diabetes across the different health systems.”
And Dr. Rydén commented: “I think it’s really important to have, since there’s been so much focus on type 2 diabetes for the last few years, and to have the ADA and EASD getting together and actually write this.”
But Dr. Rydén also pointed out that outcomes data are much more conclusive for drugs in type 2 diabetes to inform international guidelines, whereas “this is much more difficult to demonstrate with type 1 diabetes. With a new pump or [continuous glucose monitor (CGM)] you might show a reduction in [hemoglobin] A1c of X percent or X mmol/mol or hypoglycemia events, but it’s much harder to show improvements in hard outcomes like deaths and cardiovascular events. I’m really looking forward to having this presented.”
Diabetes in 2021: It’s personal
Several meeting sessions will specifically address precision medicine approaches, including the TriMASTER study, which aims to identify subgroups of patients with type 2 diabetes who respond well or poorly to particular drugs based on clinical characteristics so that treatments can be better targeted to individuals. In total, 600 patients with type 2 diabetes and suboptimal glycemic control with metformin were randomized to a dipeptidyl peptidase–4 inhibitor, an SGLT2 inhibitor, or thiazolidinedione (TZD).
According to Dr. Rydén, “The TriMASTER final results will be interesting. TZDs still have a place. ... You can’t give them to people with heart failure, but I think like a carpenter you have to have many tools in your toolbox. And I still think that there are some individuals who respond well to pioglitazone. [The study findings] could be influential, depending on the results.”
An EASD/ADA symposium entitled “Optimizing diabetes diagnosis, prevention, and care: Is precision medicine the answer?” will offer three distinct perspectives, with one speaker arguing it’s the future of diabetes medicine, another that it isn’t, and a third explaining that “the devil is in the details.”
The Diabetologia symposium will focus on a related concept: The use of artificial intelligence in diabetes research and care, with particular application to glucose control, neuropathy, and wound healing.
And during the 36th Camillo Golgi Lecture, kidney disease expert H.J. Lambers Heerspink, PhD, of the University of Groningen (the Netherlands), will speak about personalizing treatment for patients with type 2 diabetes, arguing that “the mean is meaningless.”
Next-generation incretin therapy: Is weight loss the treatment?
New data will continue the buzz from the ADA meeting surrounding tirzepatide, the dual GLP-1 receptor agonist and glucose-dependent insulinotropic polypeptide agent.
A session will add new data from SURPASS-3 CGM, looking at the effect of the drug captured by continuous glucose monitoring in patients with type 2 diabetes; SURPASS-3 MRI, examining the effect of the drug on liver fat content and abdominal adipose tissue; and SURPASS-4, investigating efficacy and safety of tirzepatide once-weekly versus insulin glargine in patients with type 2 diabetes and increased cardiovascular risk.
The drug is notable for its dramatic reductions in both A1c and weight, although questions remain about the incidence of gastrointestinal side effects and effects on long-term cardiovascular and renal outcomes.
Dr. Rydén commented: “Given its effects on A1c and body weight, we would expect a positive result, but one never knows. It’s at least safe, that’s for sure. I think this mode of action is extremely interesting.”
Dr. Del Prato noted that tirzepatide could also “open up a new area of intervention for type 1 diabetes. The initial data were promising. ... It’s worth keeping an eye on.”
A related symposium will address the future of incretin-based treatments overall, while the EASD-Lancet symposium will examine whether the treatment of obesity is the «future» of diabetes treatment.
COVID-19, hypoglycemia, bone, and much more
As always, there’s much more on the agenda. Other noteworthy sessions include those addressing hypoglycemia management; a joint EASD/European Society of Endocrinology session on diabetes and bone; a debate about whether women with diabetes are at higher cardiovascular risk than men; and in-hospital management of hyperglycemia.
A new feature of the meeting will be a daily roundup/wrap-up, where members of the program committee and speakers will summarize the day’s highlights. And another feature, “EASD e-Learning,” has been expanded to include more clinical topics around insulin use, nonalcoholic fatty liver disease, obesity, and neuropathy.
Overall, Dr. Del Prato said, “it’s a very populated program, with more than 700 presenters, 162 invited symposia speakers, and 53 chairs. It’s covering widely different areas from basic to clinical research. ... It’s a lot of stuff going on.”
Both Dr. Rydén and Dr. Del Prato have disclosures with multiple manufacturers of diabetes-related products.
A version of this article first appeared on Medscape.com.
At 18 months, much still unknown about diabetes and COVID-19
At 18 months into the COVID-19 pandemic, many of the direct and indirect effects of SARS-CoV-2 on people with diabetes have become clearer, but knowledge gaps remain, say epidemiologists.
“COVID-19 has had a devastating effect on the population with diabetes, and conversely, the high prevalence of diabetes and uncontrolled diabetes has exacerbated the problem,” Edward W. Gregg, PhD, Imperial College London, lead author of a new literature review, told this news organization.
“As it becomes clear that the COVID-19 pandemic will be with us in different forms for the foreseeable future, the emphasis for people with diabetes needs to be continued primary care, glycemic management, and vaccination to reduce the long-term impact of COVID-19 in this population,” he added.
In data, mostly from case series, the review shows that more than one-third of people hospitalized with COVID-19 have diabetes. It is published in the September issue of Diabetes Care.
People with diabetes are more than three times as likely to be hospitalized for COVID-19 than those without diabetes, even after adjustment for age, sex, and other underlying conditions. Diabetes also accounts for 30%-40% of severe COVID-19 cases and deaths. Among those with diabetes hospitalized for COVID-19, 21%-43% require intensive care, and the case fatality rate is about 25%.
In one of the few multivariate analyses that examined type 1 and type 2 diabetes separately, conducted in the U.K., the odds of in-hospital COVID-19–related deaths, compared with people without diabetes, were almost three times higher (odds ratio, 2.9) for individuals with type 1 diabetes and almost twice as high (OR, 1.8) for those with type 2, after adjustment for comorbidities.
The causes of death appear to be a combination of factors specific to the SARS-CoV-2 infection and to diabetes-related factors, Dr. Gregg said in an interview.
“Much of the increased risk is due to the fact that people with diabetes have more comorbid factors, but there are many other mechanisms that appear to further increase risk, including the inflammatory and immune responses of people with diabetes, and hyperglycemia appears to have an exacerbating effect by itself.”
Elevated glucose is clear risk factor for COVID-19 severity
Elevated A1c was identified among several other overall predictors of poor COVID-19 outcomes, including obesity as well as comorbid kidney and cardiovascular disease.
High blood glucose levels at the time of admission in people with previously diagnosed or undiagnosed diabetes emerged as a clear predictor of worse outcomes. For example, among 605 people hospitalized with COVID-19 in China, those with fasting plasma glucose 6.1-6.9 mmol/L (110-125 mg/dL) and ≥7 mmol/L (126 mg/dL) had odds ratios of poor outcomes within 28 days of 2.6 and 4.0 compared with FPG <6.1 mmol/L (110 mg/dL).
Population-based studies in the U.K. found that A1c levels measured months before COVID-19 hospitalization were associated with risk for intensive care unit admission and/or death, particularly among those with type 1 diabetes. Overall, the death rate was 36% higher for those with A1c of 9%-9.9% versus 6.5%-7%.
Despite the link between high A1c and death, there is as yet no clear evidence that normalizing blood glucose levels minimizes COVID-19 severity, Dr. Gregg said.
“There are data that suggest poor glycemic control is associated with higher risk of poor outcomes. This is indirect evidence that managing blood sugar will help, but more direct evidence is needed.”
Evidence gaps identified
Dr. Gregg and co-authors Marisa Sophiea, PhD, MSc, and Misghina Weldegiorgis, PhD, BSc, also from Imperial College London, identify three areas in which more data are needed.
First, more information is needed to determine whether exposure, infection, and hospitalization risks differ by diabetes status and how those factors affect outcomes. The same studies would also be important to identify how factors such as behavior, masking, and lockdown policies, risk factor control, and household/community environments affect risk in people with diabetes.
Second, studies are needed to better understand indirect effects of the pandemic, such as care and management factors. Some of these, such as the advent of telehealth, may turn out to be beneficial in the long run, they note.
Finally, the pandemic has “brought a wealth of natural experiments,” such as how vaccination programs and other interventions are affecting people with diabetes specifically. Finally, population studies are needed in many parts of the world beyond the U.S. and the U.K., where most of that work has been done thus far.
“Many of the most important unanswered questions lie in the potential indirect and long-term impact of the pandemic that require population-based studies,” Dr. Gregg said. “Most of our knowledge so far is from case series, which only assess patients from the time of hospitalization.”
Indeed, very little data are available for people with diabetes who get COVID-19 but are not hospitalized, so it’s not known whether they have a longer duration of illness or are at greater risk for “long COVID” than those without diabetes who experience COVID-19 at home.
“I have not seen published data on this yet, and it’s an important unanswered question,” Dr. Gregg said.
The authors have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
At 18 months into the COVID-19 pandemic, many of the direct and indirect effects of SARS-CoV-2 on people with diabetes have become clearer, but knowledge gaps remain, say epidemiologists.
“COVID-19 has had a devastating effect on the population with diabetes, and conversely, the high prevalence of diabetes and uncontrolled diabetes has exacerbated the problem,” Edward W. Gregg, PhD, Imperial College London, lead author of a new literature review, told this news organization.
“As it becomes clear that the COVID-19 pandemic will be with us in different forms for the foreseeable future, the emphasis for people with diabetes needs to be continued primary care, glycemic management, and vaccination to reduce the long-term impact of COVID-19 in this population,” he added.
In data, mostly from case series, the review shows that more than one-third of people hospitalized with COVID-19 have diabetes. It is published in the September issue of Diabetes Care.
People with diabetes are more than three times as likely to be hospitalized for COVID-19 than those without diabetes, even after adjustment for age, sex, and other underlying conditions. Diabetes also accounts for 30%-40% of severe COVID-19 cases and deaths. Among those with diabetes hospitalized for COVID-19, 21%-43% require intensive care, and the case fatality rate is about 25%.
In one of the few multivariate analyses that examined type 1 and type 2 diabetes separately, conducted in the U.K., the odds of in-hospital COVID-19–related deaths, compared with people without diabetes, were almost three times higher (odds ratio, 2.9) for individuals with type 1 diabetes and almost twice as high (OR, 1.8) for those with type 2, after adjustment for comorbidities.
The causes of death appear to be a combination of factors specific to the SARS-CoV-2 infection and to diabetes-related factors, Dr. Gregg said in an interview.
“Much of the increased risk is due to the fact that people with diabetes have more comorbid factors, but there are many other mechanisms that appear to further increase risk, including the inflammatory and immune responses of people with diabetes, and hyperglycemia appears to have an exacerbating effect by itself.”
Elevated glucose is clear risk factor for COVID-19 severity
Elevated A1c was identified among several other overall predictors of poor COVID-19 outcomes, including obesity as well as comorbid kidney and cardiovascular disease.
High blood glucose levels at the time of admission in people with previously diagnosed or undiagnosed diabetes emerged as a clear predictor of worse outcomes. For example, among 605 people hospitalized with COVID-19 in China, those with fasting plasma glucose 6.1-6.9 mmol/L (110-125 mg/dL) and ≥7 mmol/L (126 mg/dL) had odds ratios of poor outcomes within 28 days of 2.6 and 4.0 compared with FPG <6.1 mmol/L (110 mg/dL).
Population-based studies in the U.K. found that A1c levels measured months before COVID-19 hospitalization were associated with risk for intensive care unit admission and/or death, particularly among those with type 1 diabetes. Overall, the death rate was 36% higher for those with A1c of 9%-9.9% versus 6.5%-7%.
Despite the link between high A1c and death, there is as yet no clear evidence that normalizing blood glucose levels minimizes COVID-19 severity, Dr. Gregg said.
“There are data that suggest poor glycemic control is associated with higher risk of poor outcomes. This is indirect evidence that managing blood sugar will help, but more direct evidence is needed.”
Evidence gaps identified
Dr. Gregg and co-authors Marisa Sophiea, PhD, MSc, and Misghina Weldegiorgis, PhD, BSc, also from Imperial College London, identify three areas in which more data are needed.
First, more information is needed to determine whether exposure, infection, and hospitalization risks differ by diabetes status and how those factors affect outcomes. The same studies would also be important to identify how factors such as behavior, masking, and lockdown policies, risk factor control, and household/community environments affect risk in people with diabetes.
Second, studies are needed to better understand indirect effects of the pandemic, such as care and management factors. Some of these, such as the advent of telehealth, may turn out to be beneficial in the long run, they note.
Finally, the pandemic has “brought a wealth of natural experiments,” such as how vaccination programs and other interventions are affecting people with diabetes specifically. Finally, population studies are needed in many parts of the world beyond the U.S. and the U.K., where most of that work has been done thus far.
“Many of the most important unanswered questions lie in the potential indirect and long-term impact of the pandemic that require population-based studies,” Dr. Gregg said. “Most of our knowledge so far is from case series, which only assess patients from the time of hospitalization.”
Indeed, very little data are available for people with diabetes who get COVID-19 but are not hospitalized, so it’s not known whether they have a longer duration of illness or are at greater risk for “long COVID” than those without diabetes who experience COVID-19 at home.
“I have not seen published data on this yet, and it’s an important unanswered question,” Dr. Gregg said.
The authors have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
At 18 months into the COVID-19 pandemic, many of the direct and indirect effects of SARS-CoV-2 on people with diabetes have become clearer, but knowledge gaps remain, say epidemiologists.
“COVID-19 has had a devastating effect on the population with diabetes, and conversely, the high prevalence of diabetes and uncontrolled diabetes has exacerbated the problem,” Edward W. Gregg, PhD, Imperial College London, lead author of a new literature review, told this news organization.
“As it becomes clear that the COVID-19 pandemic will be with us in different forms for the foreseeable future, the emphasis for people with diabetes needs to be continued primary care, glycemic management, and vaccination to reduce the long-term impact of COVID-19 in this population,” he added.
In data, mostly from case series, the review shows that more than one-third of people hospitalized with COVID-19 have diabetes. It is published in the September issue of Diabetes Care.
People with diabetes are more than three times as likely to be hospitalized for COVID-19 than those without diabetes, even after adjustment for age, sex, and other underlying conditions. Diabetes also accounts for 30%-40% of severe COVID-19 cases and deaths. Among those with diabetes hospitalized for COVID-19, 21%-43% require intensive care, and the case fatality rate is about 25%.
In one of the few multivariate analyses that examined type 1 and type 2 diabetes separately, conducted in the U.K., the odds of in-hospital COVID-19–related deaths, compared with people without diabetes, were almost three times higher (odds ratio, 2.9) for individuals with type 1 diabetes and almost twice as high (OR, 1.8) for those with type 2, after adjustment for comorbidities.
The causes of death appear to be a combination of factors specific to the SARS-CoV-2 infection and to diabetes-related factors, Dr. Gregg said in an interview.
“Much of the increased risk is due to the fact that people with diabetes have more comorbid factors, but there are many other mechanisms that appear to further increase risk, including the inflammatory and immune responses of people with diabetes, and hyperglycemia appears to have an exacerbating effect by itself.”
Elevated glucose is clear risk factor for COVID-19 severity
Elevated A1c was identified among several other overall predictors of poor COVID-19 outcomes, including obesity as well as comorbid kidney and cardiovascular disease.
High blood glucose levels at the time of admission in people with previously diagnosed or undiagnosed diabetes emerged as a clear predictor of worse outcomes. For example, among 605 people hospitalized with COVID-19 in China, those with fasting plasma glucose 6.1-6.9 mmol/L (110-125 mg/dL) and ≥7 mmol/L (126 mg/dL) had odds ratios of poor outcomes within 28 days of 2.6 and 4.0 compared with FPG <6.1 mmol/L (110 mg/dL).
Population-based studies in the U.K. found that A1c levels measured months before COVID-19 hospitalization were associated with risk for intensive care unit admission and/or death, particularly among those with type 1 diabetes. Overall, the death rate was 36% higher for those with A1c of 9%-9.9% versus 6.5%-7%.
Despite the link between high A1c and death, there is as yet no clear evidence that normalizing blood glucose levels minimizes COVID-19 severity, Dr. Gregg said.
“There are data that suggest poor glycemic control is associated with higher risk of poor outcomes. This is indirect evidence that managing blood sugar will help, but more direct evidence is needed.”
Evidence gaps identified
Dr. Gregg and co-authors Marisa Sophiea, PhD, MSc, and Misghina Weldegiorgis, PhD, BSc, also from Imperial College London, identify three areas in which more data are needed.
First, more information is needed to determine whether exposure, infection, and hospitalization risks differ by diabetes status and how those factors affect outcomes. The same studies would also be important to identify how factors such as behavior, masking, and lockdown policies, risk factor control, and household/community environments affect risk in people with diabetes.
Second, studies are needed to better understand indirect effects of the pandemic, such as care and management factors. Some of these, such as the advent of telehealth, may turn out to be beneficial in the long run, they note.
Finally, the pandemic has “brought a wealth of natural experiments,” such as how vaccination programs and other interventions are affecting people with diabetes specifically. Finally, population studies are needed in many parts of the world beyond the U.S. and the U.K., where most of that work has been done thus far.
“Many of the most important unanswered questions lie in the potential indirect and long-term impact of the pandemic that require population-based studies,” Dr. Gregg said. “Most of our knowledge so far is from case series, which only assess patients from the time of hospitalization.”
Indeed, very little data are available for people with diabetes who get COVID-19 but are not hospitalized, so it’s not known whether they have a longer duration of illness or are at greater risk for “long COVID” than those without diabetes who experience COVID-19 at home.
“I have not seen published data on this yet, and it’s an important unanswered question,” Dr. Gregg said.
The authors have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Type 2 diabetes ‘remission’ is a reality, say major organizations
A new joint consensus statement by four major diabetes organizations aims to standardize the terminology, definition, and assessment to the phenomenon of diabetes “remission.”
The statement was jointly issued by the American Diabetes Association, the Endocrine Society, the European Association for the Study of Diabetes, and Diabetes UK.
The 12-member international writing panel proposed use of the term “remission,” as opposed to others such as “reversal,” “resolution,” or “cure,” to describe the phenomenon of prolonged normoglycemia without the use of glucose-lowering medication in a person previously diagnosed with type 2 diabetes.
“Diabetes remission may be occurring more often due to advances in treatment,” writing group member Amy Rothberg, MD, of the University of Michigan, Ann Arbor, said in a statement.
The group defined “remission” – whether attained via lifestyle, bariatric surgery, or other means – as an A1c < 6.5% (< 48 mmol/mol) at least 3 months after cessation of glucose-lowering pharmacotherapy. The panel also suggested monitoring individuals experiencing diabetes remission and raised questions that need further attention and study.
But it’s not a guideline, panel chair Matthew C. Riddle, MD, said in an interview. Rather, the “main purpose of the statement was to provide definitions, terminology, cut-points, and timing recommendations to allow data collection that will eventually lead to clinical guidelines,” he said.
A great deal of epidemiological research is conducted by analyzing data from medical records, he noted. “If clinicians are more consistent in entering data into the records and in doing measurements, it will be a better database.”
Remission reality: Advice needed for deprescribing, talking to patients
“Increasingly our treatments are getting glucose levels into the normal range, and in many cases, even after withdrawal of drug therapy. That’s not an anomaly or a fiction, it’s reality. Clinicians need to know how to talk to their patients about it,” noted Dr. Riddle, of the division of endocrinology, diabetes, and clinical nutrition at Oregon Health & Science University, Portland.
There is a need for data on the effects of deprescribing once normoglycemia is achieved, he said. “It really goes a long way to have strong epidemiological and interventional evidence. That’s what we need here, and that’s what the group is really hoping for.”
The statement recommends the following:
- The term “remission” should be used to describe a sustained metabolic improvement in type 2 diabetes to near normal levels. The panel agreed the word strikes the best balance, given that insulin resistance and beta-cell dysfunction may still be present despite normoglycemia. “Diabetes doesn’t get cured. The underlying abnormalities are still there. Remission is defined by glucose,” Dr. Riddle said. The panel also decided to do away with ADA’s former terms “partial,” “complete,” and “prolonged” remission because they are ambiguous and unhelpful.
- Remission should be defined as a return to an A1c of < 6.5% (< 48 mmol/mol) – the threshold used to diagnose diabetes – spontaneously or following an intervention and that persists for at least 3 months in the absence of usual glucose-lowering medication.
- When A1c may be unreliable, such as conditions involving variant hemoglobin or erythrocyte survival alterations, acceptable alternatives are a fasting blood glucose < 126 mg/dL (< 7.0 mmol/L) or an estimated A1c < 6.5% calculated from continuous glucose monitoring data.
- A1c testing to document a remission should be performed just prior to an intervention and no sooner than 3 months after initiation of the intervention and withdrawal of any glucose-lowering medication.
- Subsequent ongoing A1c testing should be done at least yearly thereafter, along with routine monitoring for diabetes-related complications, including retinal screening, renal function assessment, foot exams, and cardiovascular risk factor testing. “At present, there is no long-term evidence indicating that any of the usually recommended assessments for complications can safely be discontinued,” the authors wrote.
- Research based on the terminology and definitions in the present statement is needed to determine the frequency, duration, and effects on short- and long-term medical outcomes of type 2 diabetes remissions using available interventions.
Dr. Riddle said in an interview: “We thought that the clinical community needed to understand where this issue stands right now. The feasibility of a remission is greater than it used to be.
“We’re going to see more patients who have what we can now call a remission according to a standardized definition. In the future, there are likely to be guidelines regarding the kind of patients and the kind of tactics appropriate for seeking a remission,” he said.
The statement was simultaneously published online in each of the organizations’ respective journals: Diabetes Care, Journal of Clinical Endocrinology & Metabolism, Diabetologia, and Diabetic Medicine.
Dr. Riddle has reported receiving research grant support through Oregon Health & Science University from Eli Lilly, Novo Nordisk, and AstraZeneca and honoraria for consulting from Adocia, Intercept, and Theracos.
A version of this article first appeared on Medscape.com.
A new joint consensus statement by four major diabetes organizations aims to standardize the terminology, definition, and assessment to the phenomenon of diabetes “remission.”
The statement was jointly issued by the American Diabetes Association, the Endocrine Society, the European Association for the Study of Diabetes, and Diabetes UK.
The 12-member international writing panel proposed use of the term “remission,” as opposed to others such as “reversal,” “resolution,” or “cure,” to describe the phenomenon of prolonged normoglycemia without the use of glucose-lowering medication in a person previously diagnosed with type 2 diabetes.
“Diabetes remission may be occurring more often due to advances in treatment,” writing group member Amy Rothberg, MD, of the University of Michigan, Ann Arbor, said in a statement.
The group defined “remission” – whether attained via lifestyle, bariatric surgery, or other means – as an A1c < 6.5% (< 48 mmol/mol) at least 3 months after cessation of glucose-lowering pharmacotherapy. The panel also suggested monitoring individuals experiencing diabetes remission and raised questions that need further attention and study.
But it’s not a guideline, panel chair Matthew C. Riddle, MD, said in an interview. Rather, the “main purpose of the statement was to provide definitions, terminology, cut-points, and timing recommendations to allow data collection that will eventually lead to clinical guidelines,” he said.
A great deal of epidemiological research is conducted by analyzing data from medical records, he noted. “If clinicians are more consistent in entering data into the records and in doing measurements, it will be a better database.”
Remission reality: Advice needed for deprescribing, talking to patients
“Increasingly our treatments are getting glucose levels into the normal range, and in many cases, even after withdrawal of drug therapy. That’s not an anomaly or a fiction, it’s reality. Clinicians need to know how to talk to their patients about it,” noted Dr. Riddle, of the division of endocrinology, diabetes, and clinical nutrition at Oregon Health & Science University, Portland.
There is a need for data on the effects of deprescribing once normoglycemia is achieved, he said. “It really goes a long way to have strong epidemiological and interventional evidence. That’s what we need here, and that’s what the group is really hoping for.”
The statement recommends the following:
- The term “remission” should be used to describe a sustained metabolic improvement in type 2 diabetes to near normal levels. The panel agreed the word strikes the best balance, given that insulin resistance and beta-cell dysfunction may still be present despite normoglycemia. “Diabetes doesn’t get cured. The underlying abnormalities are still there. Remission is defined by glucose,” Dr. Riddle said. The panel also decided to do away with ADA’s former terms “partial,” “complete,” and “prolonged” remission because they are ambiguous and unhelpful.
- Remission should be defined as a return to an A1c of < 6.5% (< 48 mmol/mol) – the threshold used to diagnose diabetes – spontaneously or following an intervention and that persists for at least 3 months in the absence of usual glucose-lowering medication.
- When A1c may be unreliable, such as conditions involving variant hemoglobin or erythrocyte survival alterations, acceptable alternatives are a fasting blood glucose < 126 mg/dL (< 7.0 mmol/L) or an estimated A1c < 6.5% calculated from continuous glucose monitoring data.
- A1c testing to document a remission should be performed just prior to an intervention and no sooner than 3 months after initiation of the intervention and withdrawal of any glucose-lowering medication.
- Subsequent ongoing A1c testing should be done at least yearly thereafter, along with routine monitoring for diabetes-related complications, including retinal screening, renal function assessment, foot exams, and cardiovascular risk factor testing. “At present, there is no long-term evidence indicating that any of the usually recommended assessments for complications can safely be discontinued,” the authors wrote.
- Research based on the terminology and definitions in the present statement is needed to determine the frequency, duration, and effects on short- and long-term medical outcomes of type 2 diabetes remissions using available interventions.
Dr. Riddle said in an interview: “We thought that the clinical community needed to understand where this issue stands right now. The feasibility of a remission is greater than it used to be.
“We’re going to see more patients who have what we can now call a remission according to a standardized definition. In the future, there are likely to be guidelines regarding the kind of patients and the kind of tactics appropriate for seeking a remission,” he said.
The statement was simultaneously published online in each of the organizations’ respective journals: Diabetes Care, Journal of Clinical Endocrinology & Metabolism, Diabetologia, and Diabetic Medicine.
Dr. Riddle has reported receiving research grant support through Oregon Health & Science University from Eli Lilly, Novo Nordisk, and AstraZeneca and honoraria for consulting from Adocia, Intercept, and Theracos.
A version of this article first appeared on Medscape.com.
A new joint consensus statement by four major diabetes organizations aims to standardize the terminology, definition, and assessment to the phenomenon of diabetes “remission.”
The statement was jointly issued by the American Diabetes Association, the Endocrine Society, the European Association for the Study of Diabetes, and Diabetes UK.
The 12-member international writing panel proposed use of the term “remission,” as opposed to others such as “reversal,” “resolution,” or “cure,” to describe the phenomenon of prolonged normoglycemia without the use of glucose-lowering medication in a person previously diagnosed with type 2 diabetes.
“Diabetes remission may be occurring more often due to advances in treatment,” writing group member Amy Rothberg, MD, of the University of Michigan, Ann Arbor, said in a statement.
The group defined “remission” – whether attained via lifestyle, bariatric surgery, or other means – as an A1c < 6.5% (< 48 mmol/mol) at least 3 months after cessation of glucose-lowering pharmacotherapy. The panel also suggested monitoring individuals experiencing diabetes remission and raised questions that need further attention and study.
But it’s not a guideline, panel chair Matthew C. Riddle, MD, said in an interview. Rather, the “main purpose of the statement was to provide definitions, terminology, cut-points, and timing recommendations to allow data collection that will eventually lead to clinical guidelines,” he said.
A great deal of epidemiological research is conducted by analyzing data from medical records, he noted. “If clinicians are more consistent in entering data into the records and in doing measurements, it will be a better database.”
Remission reality: Advice needed for deprescribing, talking to patients
“Increasingly our treatments are getting glucose levels into the normal range, and in many cases, even after withdrawal of drug therapy. That’s not an anomaly or a fiction, it’s reality. Clinicians need to know how to talk to their patients about it,” noted Dr. Riddle, of the division of endocrinology, diabetes, and clinical nutrition at Oregon Health & Science University, Portland.
There is a need for data on the effects of deprescribing once normoglycemia is achieved, he said. “It really goes a long way to have strong epidemiological and interventional evidence. That’s what we need here, and that’s what the group is really hoping for.”
The statement recommends the following:
- The term “remission” should be used to describe a sustained metabolic improvement in type 2 diabetes to near normal levels. The panel agreed the word strikes the best balance, given that insulin resistance and beta-cell dysfunction may still be present despite normoglycemia. “Diabetes doesn’t get cured. The underlying abnormalities are still there. Remission is defined by glucose,” Dr. Riddle said. The panel also decided to do away with ADA’s former terms “partial,” “complete,” and “prolonged” remission because they are ambiguous and unhelpful.
- Remission should be defined as a return to an A1c of < 6.5% (< 48 mmol/mol) – the threshold used to diagnose diabetes – spontaneously or following an intervention and that persists for at least 3 months in the absence of usual glucose-lowering medication.
- When A1c may be unreliable, such as conditions involving variant hemoglobin or erythrocyte survival alterations, acceptable alternatives are a fasting blood glucose < 126 mg/dL (< 7.0 mmol/L) or an estimated A1c < 6.5% calculated from continuous glucose monitoring data.
- A1c testing to document a remission should be performed just prior to an intervention and no sooner than 3 months after initiation of the intervention and withdrawal of any glucose-lowering medication.
- Subsequent ongoing A1c testing should be done at least yearly thereafter, along with routine monitoring for diabetes-related complications, including retinal screening, renal function assessment, foot exams, and cardiovascular risk factor testing. “At present, there is no long-term evidence indicating that any of the usually recommended assessments for complications can safely be discontinued,” the authors wrote.
- Research based on the terminology and definitions in the present statement is needed to determine the frequency, duration, and effects on short- and long-term medical outcomes of type 2 diabetes remissions using available interventions.
Dr. Riddle said in an interview: “We thought that the clinical community needed to understand where this issue stands right now. The feasibility of a remission is greater than it used to be.
“We’re going to see more patients who have what we can now call a remission according to a standardized definition. In the future, there are likely to be guidelines regarding the kind of patients and the kind of tactics appropriate for seeking a remission,” he said.
The statement was simultaneously published online in each of the organizations’ respective journals: Diabetes Care, Journal of Clinical Endocrinology & Metabolism, Diabetologia, and Diabetic Medicine.
Dr. Riddle has reported receiving research grant support through Oregon Health & Science University from Eli Lilly, Novo Nordisk, and AstraZeneca and honoraria for consulting from Adocia, Intercept, and Theracos.
A version of this article first appeared on Medscape.com.
Emerging data point to underlying autoimmunity in ME/CFS
Emerging evidence suggests that autoimmunity plays a role in postinfectious myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and that targeting autoantibodies could be a promising treatment approach.
The same may also apply to many cases of “long COVID,” in which many of the symptoms overlap with those of ME/CFS, Carmen Scheibenbogen, MD, professor of clinical immunology and director of the Institute for Medical Immunology, Charité University Medicine, Berlin, said during the annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis.
Several groups, including Dr. Scheibenbogen’s, have reported finding autoantibodies against neurotransmitter receptor antigens in people with ME/CFS. And, in a paper published in the Journal of Clinical Medicine the day that Dr. Scheibenbogen spoke at the meeting, her team reported significant correlations between autoantibodies to vasoregulative G-protein–coupled receptors and symptom severity, autonomic dysfunction, and disability among 116 patients with infection-triggered ME/CFS who were diagnosed using the symptom-based 2003 Canadian consensus criteria.
People with ME/CFS are also more likely to have genetic risk factors associated with autoimmunity and personal and/or family histories of autoimmune conditions. And, clinical trials have demonstrated early success with various immunomodulatory treatments in subsets of people with ME/CFS, including endoxan, rituximab, and immunoadsorption.
“We have evidence that ME/CFS is an autoantibody-mediated disease, and we have evidence that autoantibody targeting is effective in this disease. So far ... we have few and underfinanced clinical studies, but the good news is we have promising emerging treatment options,” Dr. Scheibenbogen said.
Asked to comment, ME/CFS expert Anthony L. Komaroff, MD, of Brigham and Women’s Hospital and Harvard Medical School, both in Boston, said: “There is already strong evidence that there are autoantibodies in ME/CFS. Dr. Scheibenbogen’s work is the latest and employs the latest technology. ... I would bet that autoantibodies to neural targets are likely to cause some of the symptoms of ME/CFS and some of the symptoms of long COVID.”
However, he cautioned, “that has not been proven, and even if it were proven you would have to demonstrate that treatments based on that theory worked.”
Dr. Komaroff said he views autoimmunity as a likely component of the ME/CFS spectrum, but not the only one. “My current view of this illness is that there’s a final common pathway in the brain that leads to the symptoms of the illness. But that final common pathway can be triggered by a variety of different things, one of which could be autoantibodies while another could be infection or inflammation in the brain.”
Emerging evidence points to autoimmunity
Dr. Scheibenbogen summarized the work published in this area over the past few years by her group and others.
In a comparison of ME/CFS patients with 201 healthy controls, significant associations were seen with two specific autoimmunity-related risk alleles only in the ME/CFS patients who reported acute onset of disease with an infection but not in those with ME/CFS without infection-triggered onset or the controls. Both genes play roles in regulating B- and T-cell activation.
Another recent study found associations with ME/CFS and major histocompatibility complex class II molecules, a typical feature of autoimmune diseases, in a comparison between 426 adult Norwegian ME/CFS patients who were diagnosed with the Canadian consensus criteria and 4,511 healthy, ethnically matched controls.
In a 2020 paper, Dr. Scheibenbogen and pharmacologist Klaus Wirth presented a “unifying hypothesis” of ME/CFS pathophysiology based on the finding of elevations in autoantibodies against beta2-adrenergic receptors and muscarinic acetylcholine receptors in some individuals with the condition. Since both of those receptors are important vasodilators, their functional disturbance would be expected to cause vasoconstriction and hypoxemia, which would explain many of the symptoms of ME/CFS. This mechanism would align with other findings of muscular and cerebral hypoperfusion that correlate with fatigue, particularly post exertion, as well as metabolic changes that are in line with the concepts of hypoxemia and ischemia.
Further evidence for vascular dysfunction in ME/CFS came from her group’s study finding evidence of peripheral endothelial dysfunction that was associated with symptom severity in 35 adult patients. “Vasoconstriction, hypovolemia, and release of vasoactive and algesic mediators is probably a key pathomechanism of the disease,” Dr. Scheibenbogen said.
Treatments: Will targeting autoantibodies work?
In the second part of her talk, Dr. Scheibenbogen summarized clinical trials of the following treatment approaches that involve targeting autoantibodies as a way to alleviate ME/CFS symptoms:
Rituximab: Work on infusions of the B-cell depleting agent has been conducted by Norwegian researchers beginning in 2011 with a small randomized trial and an open-label, phase 2 study in 2015, both showing clinical responses in ME/CFS. However, a subsequent phase 3, randomized clinical trial of 151 patients, again diagnosed using the Canadian criteria, was negative.
There are several possible explanations for this, Dr. Scheibenbogen noted. For one, the maintenance dose had to be reduced because of a lack of financial support. “This was probably critical. The lower dose was insufficient to adequately deplete B cells.” Also, there may have been a strong placebo response in the control group since they were being given better care than they normally would receive during the trial. “I think probably nobody will again do a rituximab trial. This was very disappointing for all of us. But, we still have other opportunities to follow this path,” she said.
Dr. Komaroff agreed. “I don’t think the failure of one drug that hits malignant B cells is proof against the autoimmune hypothesis per se. I think the evidence is that rituximab doesn’t work, but that doesn’t invalidate the autoimmunity hypothesis.”
Cyclophosphamide: The same Norwegian group also showed positive findings in an open-label, phase 2 trial of the immune-modifying drug cyclophosphamide in 22 of 40 patients. Interestingly, HLA risk alleles were much more common in responders than nonresponders, Dr. Scheibenbogen noted.
Immunoadsorption: This technique, similar to dialysis, involves separating out the blood plasma by centrifugation and removing IgG autoantibodies by a binding column, then returning the plasma back to the patient. It is used, primarily in Europe, to treat severe autoimmune diseases including dilative cardiomyopathy and refractory systemic lupus erythematosus (SLE).
Dr. Scheibenbogen’s group has conducted two studies of immunoadsorption in ME/CFS. In one, a 5-day procedure led to rapid symptom improvement in 7 of 10 patients, with sustained improvement in 3 patients after 2 years. Autoantibodies decreased rapidly in 9 of the 10 patients. In a follow-up study of five of the responders 2 years later, retreatment with a modified immunoadsorption protocol led to rapid and sustained improvement in four. Further study has been on hold because of the pandemic.
Next-gen IgG-targeting therapies: Another approach that could offer promise for ME/CFS involves therapies that block the Fc receptors of IgG. Several are in phase 1-3 trials for autoimmune conditions. One candidate drug, the Fc fragment efgartigimod, is currently in phase 3 trials for several conditions, including generalized myasthenia gravis, primary immune thrombocytopenia, and chronic inflammatory demyelinating polyneuropathy. Phase 3 trials are planned for the monoclonal antibody rozanolixizumab in those same conditions.
Newer-generation monoclonal antibodies targeting CD19 or CD20 that show benefit in various autoimmune conditions are another possibility for ME/CFS. These include ocrelizumab (Ocrevus), approved in the United States for treating relapsing and progressive multiple sclerosis and in trials for SLE; obinutuzumab (Gazyva), approved for treating lymphoma and also in development for SLE; and ublituximab, in phase 3 trials for multiple sclerosis.
“Most of them are more effective than rituximab,” Dr. Scheibenbogen noted, adding that “currently the data look quite promising. They are effective in different autoimmune diseases and they are quite well tolerated. There’s great hope now with COVID-19 that we can convince some companies to do such trials in ME/CFS as well.”
Dr. Scheibenbogen’s institution, the Charité Fatigue Center, has a patent for beta2-adrenergic receptor antibodies for diagnosing ME/CFS under her name together with Celltrend. Dr. Komaroff has received personal fees from Serimmune.
Emerging evidence suggests that autoimmunity plays a role in postinfectious myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and that targeting autoantibodies could be a promising treatment approach.
The same may also apply to many cases of “long COVID,” in which many of the symptoms overlap with those of ME/CFS, Carmen Scheibenbogen, MD, professor of clinical immunology and director of the Institute for Medical Immunology, Charité University Medicine, Berlin, said during the annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis.
Several groups, including Dr. Scheibenbogen’s, have reported finding autoantibodies against neurotransmitter receptor antigens in people with ME/CFS. And, in a paper published in the Journal of Clinical Medicine the day that Dr. Scheibenbogen spoke at the meeting, her team reported significant correlations between autoantibodies to vasoregulative G-protein–coupled receptors and symptom severity, autonomic dysfunction, and disability among 116 patients with infection-triggered ME/CFS who were diagnosed using the symptom-based 2003 Canadian consensus criteria.
People with ME/CFS are also more likely to have genetic risk factors associated with autoimmunity and personal and/or family histories of autoimmune conditions. And, clinical trials have demonstrated early success with various immunomodulatory treatments in subsets of people with ME/CFS, including endoxan, rituximab, and immunoadsorption.
“We have evidence that ME/CFS is an autoantibody-mediated disease, and we have evidence that autoantibody targeting is effective in this disease. So far ... we have few and underfinanced clinical studies, but the good news is we have promising emerging treatment options,” Dr. Scheibenbogen said.
Asked to comment, ME/CFS expert Anthony L. Komaroff, MD, of Brigham and Women’s Hospital and Harvard Medical School, both in Boston, said: “There is already strong evidence that there are autoantibodies in ME/CFS. Dr. Scheibenbogen’s work is the latest and employs the latest technology. ... I would bet that autoantibodies to neural targets are likely to cause some of the symptoms of ME/CFS and some of the symptoms of long COVID.”
However, he cautioned, “that has not been proven, and even if it were proven you would have to demonstrate that treatments based on that theory worked.”
Dr. Komaroff said he views autoimmunity as a likely component of the ME/CFS spectrum, but not the only one. “My current view of this illness is that there’s a final common pathway in the brain that leads to the symptoms of the illness. But that final common pathway can be triggered by a variety of different things, one of which could be autoantibodies while another could be infection or inflammation in the brain.”
Emerging evidence points to autoimmunity
Dr. Scheibenbogen summarized the work published in this area over the past few years by her group and others.
In a comparison of ME/CFS patients with 201 healthy controls, significant associations were seen with two specific autoimmunity-related risk alleles only in the ME/CFS patients who reported acute onset of disease with an infection but not in those with ME/CFS without infection-triggered onset or the controls. Both genes play roles in regulating B- and T-cell activation.
Another recent study found associations with ME/CFS and major histocompatibility complex class II molecules, a typical feature of autoimmune diseases, in a comparison between 426 adult Norwegian ME/CFS patients who were diagnosed with the Canadian consensus criteria and 4,511 healthy, ethnically matched controls.
In a 2020 paper, Dr. Scheibenbogen and pharmacologist Klaus Wirth presented a “unifying hypothesis” of ME/CFS pathophysiology based on the finding of elevations in autoantibodies against beta2-adrenergic receptors and muscarinic acetylcholine receptors in some individuals with the condition. Since both of those receptors are important vasodilators, their functional disturbance would be expected to cause vasoconstriction and hypoxemia, which would explain many of the symptoms of ME/CFS. This mechanism would align with other findings of muscular and cerebral hypoperfusion that correlate with fatigue, particularly post exertion, as well as metabolic changes that are in line with the concepts of hypoxemia and ischemia.
Further evidence for vascular dysfunction in ME/CFS came from her group’s study finding evidence of peripheral endothelial dysfunction that was associated with symptom severity in 35 adult patients. “Vasoconstriction, hypovolemia, and release of vasoactive and algesic mediators is probably a key pathomechanism of the disease,” Dr. Scheibenbogen said.
Treatments: Will targeting autoantibodies work?
In the second part of her talk, Dr. Scheibenbogen summarized clinical trials of the following treatment approaches that involve targeting autoantibodies as a way to alleviate ME/CFS symptoms:
Rituximab: Work on infusions of the B-cell depleting agent has been conducted by Norwegian researchers beginning in 2011 with a small randomized trial and an open-label, phase 2 study in 2015, both showing clinical responses in ME/CFS. However, a subsequent phase 3, randomized clinical trial of 151 patients, again diagnosed using the Canadian criteria, was negative.
There are several possible explanations for this, Dr. Scheibenbogen noted. For one, the maintenance dose had to be reduced because of a lack of financial support. “This was probably critical. The lower dose was insufficient to adequately deplete B cells.” Also, there may have been a strong placebo response in the control group since they were being given better care than they normally would receive during the trial. “I think probably nobody will again do a rituximab trial. This was very disappointing for all of us. But, we still have other opportunities to follow this path,” she said.
Dr. Komaroff agreed. “I don’t think the failure of one drug that hits malignant B cells is proof against the autoimmune hypothesis per se. I think the evidence is that rituximab doesn’t work, but that doesn’t invalidate the autoimmunity hypothesis.”
Cyclophosphamide: The same Norwegian group also showed positive findings in an open-label, phase 2 trial of the immune-modifying drug cyclophosphamide in 22 of 40 patients. Interestingly, HLA risk alleles were much more common in responders than nonresponders, Dr. Scheibenbogen noted.
Immunoadsorption: This technique, similar to dialysis, involves separating out the blood plasma by centrifugation and removing IgG autoantibodies by a binding column, then returning the plasma back to the patient. It is used, primarily in Europe, to treat severe autoimmune diseases including dilative cardiomyopathy and refractory systemic lupus erythematosus (SLE).
Dr. Scheibenbogen’s group has conducted two studies of immunoadsorption in ME/CFS. In one, a 5-day procedure led to rapid symptom improvement in 7 of 10 patients, with sustained improvement in 3 patients after 2 years. Autoantibodies decreased rapidly in 9 of the 10 patients. In a follow-up study of five of the responders 2 years later, retreatment with a modified immunoadsorption protocol led to rapid and sustained improvement in four. Further study has been on hold because of the pandemic.
Next-gen IgG-targeting therapies: Another approach that could offer promise for ME/CFS involves therapies that block the Fc receptors of IgG. Several are in phase 1-3 trials for autoimmune conditions. One candidate drug, the Fc fragment efgartigimod, is currently in phase 3 trials for several conditions, including generalized myasthenia gravis, primary immune thrombocytopenia, and chronic inflammatory demyelinating polyneuropathy. Phase 3 trials are planned for the monoclonal antibody rozanolixizumab in those same conditions.
Newer-generation monoclonal antibodies targeting CD19 or CD20 that show benefit in various autoimmune conditions are another possibility for ME/CFS. These include ocrelizumab (Ocrevus), approved in the United States for treating relapsing and progressive multiple sclerosis and in trials for SLE; obinutuzumab (Gazyva), approved for treating lymphoma and also in development for SLE; and ublituximab, in phase 3 trials for multiple sclerosis.
“Most of them are more effective than rituximab,” Dr. Scheibenbogen noted, adding that “currently the data look quite promising. They are effective in different autoimmune diseases and they are quite well tolerated. There’s great hope now with COVID-19 that we can convince some companies to do such trials in ME/CFS as well.”
Dr. Scheibenbogen’s institution, the Charité Fatigue Center, has a patent for beta2-adrenergic receptor antibodies for diagnosing ME/CFS under her name together with Celltrend. Dr. Komaroff has received personal fees from Serimmune.
Emerging evidence suggests that autoimmunity plays a role in postinfectious myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and that targeting autoantibodies could be a promising treatment approach.
The same may also apply to many cases of “long COVID,” in which many of the symptoms overlap with those of ME/CFS, Carmen Scheibenbogen, MD, professor of clinical immunology and director of the Institute for Medical Immunology, Charité University Medicine, Berlin, said during the annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis.
Several groups, including Dr. Scheibenbogen’s, have reported finding autoantibodies against neurotransmitter receptor antigens in people with ME/CFS. And, in a paper published in the Journal of Clinical Medicine the day that Dr. Scheibenbogen spoke at the meeting, her team reported significant correlations between autoantibodies to vasoregulative G-protein–coupled receptors and symptom severity, autonomic dysfunction, and disability among 116 patients with infection-triggered ME/CFS who were diagnosed using the symptom-based 2003 Canadian consensus criteria.
People with ME/CFS are also more likely to have genetic risk factors associated with autoimmunity and personal and/or family histories of autoimmune conditions. And, clinical trials have demonstrated early success with various immunomodulatory treatments in subsets of people with ME/CFS, including endoxan, rituximab, and immunoadsorption.
“We have evidence that ME/CFS is an autoantibody-mediated disease, and we have evidence that autoantibody targeting is effective in this disease. So far ... we have few and underfinanced clinical studies, but the good news is we have promising emerging treatment options,” Dr. Scheibenbogen said.
Asked to comment, ME/CFS expert Anthony L. Komaroff, MD, of Brigham and Women’s Hospital and Harvard Medical School, both in Boston, said: “There is already strong evidence that there are autoantibodies in ME/CFS. Dr. Scheibenbogen’s work is the latest and employs the latest technology. ... I would bet that autoantibodies to neural targets are likely to cause some of the symptoms of ME/CFS and some of the symptoms of long COVID.”
However, he cautioned, “that has not been proven, and even if it were proven you would have to demonstrate that treatments based on that theory worked.”
Dr. Komaroff said he views autoimmunity as a likely component of the ME/CFS spectrum, but not the only one. “My current view of this illness is that there’s a final common pathway in the brain that leads to the symptoms of the illness. But that final common pathway can be triggered by a variety of different things, one of which could be autoantibodies while another could be infection or inflammation in the brain.”
Emerging evidence points to autoimmunity
Dr. Scheibenbogen summarized the work published in this area over the past few years by her group and others.
In a comparison of ME/CFS patients with 201 healthy controls, significant associations were seen with two specific autoimmunity-related risk alleles only in the ME/CFS patients who reported acute onset of disease with an infection but not in those with ME/CFS without infection-triggered onset or the controls. Both genes play roles in regulating B- and T-cell activation.
Another recent study found associations with ME/CFS and major histocompatibility complex class II molecules, a typical feature of autoimmune diseases, in a comparison between 426 adult Norwegian ME/CFS patients who were diagnosed with the Canadian consensus criteria and 4,511 healthy, ethnically matched controls.
In a 2020 paper, Dr. Scheibenbogen and pharmacologist Klaus Wirth presented a “unifying hypothesis” of ME/CFS pathophysiology based on the finding of elevations in autoantibodies against beta2-adrenergic receptors and muscarinic acetylcholine receptors in some individuals with the condition. Since both of those receptors are important vasodilators, their functional disturbance would be expected to cause vasoconstriction and hypoxemia, which would explain many of the symptoms of ME/CFS. This mechanism would align with other findings of muscular and cerebral hypoperfusion that correlate with fatigue, particularly post exertion, as well as metabolic changes that are in line with the concepts of hypoxemia and ischemia.
Further evidence for vascular dysfunction in ME/CFS came from her group’s study finding evidence of peripheral endothelial dysfunction that was associated with symptom severity in 35 adult patients. “Vasoconstriction, hypovolemia, and release of vasoactive and algesic mediators is probably a key pathomechanism of the disease,” Dr. Scheibenbogen said.
Treatments: Will targeting autoantibodies work?
In the second part of her talk, Dr. Scheibenbogen summarized clinical trials of the following treatment approaches that involve targeting autoantibodies as a way to alleviate ME/CFS symptoms:
Rituximab: Work on infusions of the B-cell depleting agent has been conducted by Norwegian researchers beginning in 2011 with a small randomized trial and an open-label, phase 2 study in 2015, both showing clinical responses in ME/CFS. However, a subsequent phase 3, randomized clinical trial of 151 patients, again diagnosed using the Canadian criteria, was negative.
There are several possible explanations for this, Dr. Scheibenbogen noted. For one, the maintenance dose had to be reduced because of a lack of financial support. “This was probably critical. The lower dose was insufficient to adequately deplete B cells.” Also, there may have been a strong placebo response in the control group since they were being given better care than they normally would receive during the trial. “I think probably nobody will again do a rituximab trial. This was very disappointing for all of us. But, we still have other opportunities to follow this path,” she said.
Dr. Komaroff agreed. “I don’t think the failure of one drug that hits malignant B cells is proof against the autoimmune hypothesis per se. I think the evidence is that rituximab doesn’t work, but that doesn’t invalidate the autoimmunity hypothesis.”
Cyclophosphamide: The same Norwegian group also showed positive findings in an open-label, phase 2 trial of the immune-modifying drug cyclophosphamide in 22 of 40 patients. Interestingly, HLA risk alleles were much more common in responders than nonresponders, Dr. Scheibenbogen noted.
Immunoadsorption: This technique, similar to dialysis, involves separating out the blood plasma by centrifugation and removing IgG autoantibodies by a binding column, then returning the plasma back to the patient. It is used, primarily in Europe, to treat severe autoimmune diseases including dilative cardiomyopathy and refractory systemic lupus erythematosus (SLE).
Dr. Scheibenbogen’s group has conducted two studies of immunoadsorption in ME/CFS. In one, a 5-day procedure led to rapid symptom improvement in 7 of 10 patients, with sustained improvement in 3 patients after 2 years. Autoantibodies decreased rapidly in 9 of the 10 patients. In a follow-up study of five of the responders 2 years later, retreatment with a modified immunoadsorption protocol led to rapid and sustained improvement in four. Further study has been on hold because of the pandemic.
Next-gen IgG-targeting therapies: Another approach that could offer promise for ME/CFS involves therapies that block the Fc receptors of IgG. Several are in phase 1-3 trials for autoimmune conditions. One candidate drug, the Fc fragment efgartigimod, is currently in phase 3 trials for several conditions, including generalized myasthenia gravis, primary immune thrombocytopenia, and chronic inflammatory demyelinating polyneuropathy. Phase 3 trials are planned for the monoclonal antibody rozanolixizumab in those same conditions.
Newer-generation monoclonal antibodies targeting CD19 or CD20 that show benefit in various autoimmune conditions are another possibility for ME/CFS. These include ocrelizumab (Ocrevus), approved in the United States for treating relapsing and progressive multiple sclerosis and in trials for SLE; obinutuzumab (Gazyva), approved for treating lymphoma and also in development for SLE; and ublituximab, in phase 3 trials for multiple sclerosis.
“Most of them are more effective than rituximab,” Dr. Scheibenbogen noted, adding that “currently the data look quite promising. They are effective in different autoimmune diseases and they are quite well tolerated. There’s great hope now with COVID-19 that we can convince some companies to do such trials in ME/CFS as well.”
Dr. Scheibenbogen’s institution, the Charité Fatigue Center, has a patent for beta2-adrenergic receptor antibodies for diagnosing ME/CFS under her name together with Celltrend. Dr. Komaroff has received personal fees from Serimmune.
FROM IACFS/ME 2021
New recommendations address ME/CFS diagnosis and management
New consensus recommendations address diagnosis and management of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), with advice that may also be helpful for patients with lingering symptoms following acute COVID-19 infection.
The document was published online Aug. 25, 2021, in the Mayo Clinic Proceedings by the 23-member U.S. ME/CFS Clinician Coalition, headed by Lucinda Bateman, MD, of the Bateman Horne Center of Excellence, Salt Lake City. The document is the culmination of work that began with a summit held at the center in March 2018.
The target audience is both generalist and specialist health care providers. While ME/CFS is estimated to affect up to 2.5 million Americans, more than 90% are either undiagnosed or misdiagnosed with other conditions such as depression. And those who are diagnosed often receive inappropriate, outdated treatments such as psychotherapy and exercise prescriptions.
“Despite myalgic encephalomyelitis/chronic fatigue syndrome affecting millions of people worldwide, many clinicians lack the knowledge to appropriately diagnose or manage ME/CFS. Unfortunately, clinical guidance has been scarce, obsolete, or potentially harmful,” Dr. Bateman and colleagues wrote.
The urgency of appropriate recognition and management of ME/CFS has increased as growing numbers of people are exhibiting signs and symptoms of ME/CFS following acute COVID-19 infection. This isn’t surprising because the illness has long been linked to other infections, including Epstein-Barr virus, the authors noted.
The document covers the epidemiology, impact, and prognosis of ME/CFS, as well as etiology and pathophysiology. “Scientific studies demonstrate multiple dysfunctional organ systems, including neuro, immune, and metabolic, in ME/CFS. These findings are not explained merely by deconditioning,” document coauthor Lily Chu, MD, an independent consultant in Burlingame, Calif., said in an interview.
The document reviews the 2015 U.S. Institute of Medicine (now Academy of Medicine) diagnostic criteria that are now also recommended by the Centers for Disease Control and Prevention. They are based on four main symptoms: substantial reduction or impairment in the ability to engage in preillness levels of occupational, educational, social or personal activities for longer than 6 months; postexertional malaise, a worsening of all current symptoms, that patients often describe as a “crash”; unrefreshing sleep; and cognitive impairment and/or orthostatic intolerance.
“The new diagnostic criteria focusing on the key symptom of postexertional malaise rather than chronic fatigue, which is common in many conditions, may make the diagnostic process quicker and more accurate. Diagnosis now is both an inclusionary and not just exclusionary process, so it’s not necessary to eliminate all causes of fatigue. Diagnose patients who fit the criteria and be alert for it in people with persistent symptoms post COVID,” Dr. Chu said.
The document provides advice for taking a clinical history to obtain the information necessary for making the diagnosis, including use of laboratory testing to rule out other conditions. Physical exams, while they may not reveal specific abnormalities, may help in identifying comorbidities and ruling out alternative diagnoses.
A long list of nonpharmacologic and pharmacologic treatment and management approaches is offered for each of the individual core and common ME/CFS symptoms, including postexertional malaise, orthostatic intolerance, sleep issues, cognitive dysfunction and fatigue, immune dysfunction, pain, and gastrointestinal issues.
The document recommends against using the “outdated standard of care” cognitive-behavioral therapy and graded exercise therapy as primary treatments for the illness. Instead, the authors recommend teaching patients “pacing,” an individualized approach to energy conservation aimed at minimizing the frequency, duration, and severity of postexertional malaise.
Clinicians are also advised to assess patients’ daily living needs and provide support, including acquiring handicap placards, work or school accommodations, and disability benefits.
“There are things clinicians can do now to help patients even without a disease-modifying treatment. These are actions they are already familiar with and carry out for people with other chronic diseases, which often have limited treatment options as well. Don’t underestimate the importance and value of supportive care for patients.” Dr. Chu said.
The recommendations are based primarily on clinical expertise because there are very few randomized trials, and much of the evidence from other types of trials has been flawed, document coauthor Anthony L. Komaroff, MD, of Brigham and Women’s Hospital and Harvard Medical School, both in Boston, said in an interview.
“The sad reality is there aren’t very many large randomized clinical trials with this illness and so what a group of very experienced clinicians did was to gather their collective experience and report it as that. It’s largely uncontrolled experience, but from people who have seen a lot of patients, for what it’s worth to the medical community.”
Dr. Komaroff also advised that clinicians watch out for ME/CFS in patients with long COVID. “If we find that those called long COVID meet ME/CFS criteria, the reason for knowing that is that there are already some treatments that according to experienced clinicians are helpful for ME/CFS, and it would be perfectly appropriate to try some of them in long COVID, particularly the ones that have minimal adverse reactions.”
The guidelines project was supported by the Open Medicine Foundation. Dr. Komaroff reported receiving personal fees from Serimmune outside the submitted work. Dr. Chu has no disclosures.
New consensus recommendations address diagnosis and management of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), with advice that may also be helpful for patients with lingering symptoms following acute COVID-19 infection.
The document was published online Aug. 25, 2021, in the Mayo Clinic Proceedings by the 23-member U.S. ME/CFS Clinician Coalition, headed by Lucinda Bateman, MD, of the Bateman Horne Center of Excellence, Salt Lake City. The document is the culmination of work that began with a summit held at the center in March 2018.
The target audience is both generalist and specialist health care providers. While ME/CFS is estimated to affect up to 2.5 million Americans, more than 90% are either undiagnosed or misdiagnosed with other conditions such as depression. And those who are diagnosed often receive inappropriate, outdated treatments such as psychotherapy and exercise prescriptions.
“Despite myalgic encephalomyelitis/chronic fatigue syndrome affecting millions of people worldwide, many clinicians lack the knowledge to appropriately diagnose or manage ME/CFS. Unfortunately, clinical guidance has been scarce, obsolete, or potentially harmful,” Dr. Bateman and colleagues wrote.
The urgency of appropriate recognition and management of ME/CFS has increased as growing numbers of people are exhibiting signs and symptoms of ME/CFS following acute COVID-19 infection. This isn’t surprising because the illness has long been linked to other infections, including Epstein-Barr virus, the authors noted.
The document covers the epidemiology, impact, and prognosis of ME/CFS, as well as etiology and pathophysiology. “Scientific studies demonstrate multiple dysfunctional organ systems, including neuro, immune, and metabolic, in ME/CFS. These findings are not explained merely by deconditioning,” document coauthor Lily Chu, MD, an independent consultant in Burlingame, Calif., said in an interview.
The document reviews the 2015 U.S. Institute of Medicine (now Academy of Medicine) diagnostic criteria that are now also recommended by the Centers for Disease Control and Prevention. They are based on four main symptoms: substantial reduction or impairment in the ability to engage in preillness levels of occupational, educational, social or personal activities for longer than 6 months; postexertional malaise, a worsening of all current symptoms, that patients often describe as a “crash”; unrefreshing sleep; and cognitive impairment and/or orthostatic intolerance.
“The new diagnostic criteria focusing on the key symptom of postexertional malaise rather than chronic fatigue, which is common in many conditions, may make the diagnostic process quicker and more accurate. Diagnosis now is both an inclusionary and not just exclusionary process, so it’s not necessary to eliminate all causes of fatigue. Diagnose patients who fit the criteria and be alert for it in people with persistent symptoms post COVID,” Dr. Chu said.
The document provides advice for taking a clinical history to obtain the information necessary for making the diagnosis, including use of laboratory testing to rule out other conditions. Physical exams, while they may not reveal specific abnormalities, may help in identifying comorbidities and ruling out alternative diagnoses.
A long list of nonpharmacologic and pharmacologic treatment and management approaches is offered for each of the individual core and common ME/CFS symptoms, including postexertional malaise, orthostatic intolerance, sleep issues, cognitive dysfunction and fatigue, immune dysfunction, pain, and gastrointestinal issues.
The document recommends against using the “outdated standard of care” cognitive-behavioral therapy and graded exercise therapy as primary treatments for the illness. Instead, the authors recommend teaching patients “pacing,” an individualized approach to energy conservation aimed at minimizing the frequency, duration, and severity of postexertional malaise.
Clinicians are also advised to assess patients’ daily living needs and provide support, including acquiring handicap placards, work or school accommodations, and disability benefits.
“There are things clinicians can do now to help patients even without a disease-modifying treatment. These are actions they are already familiar with and carry out for people with other chronic diseases, which often have limited treatment options as well. Don’t underestimate the importance and value of supportive care for patients.” Dr. Chu said.
The recommendations are based primarily on clinical expertise because there are very few randomized trials, and much of the evidence from other types of trials has been flawed, document coauthor Anthony L. Komaroff, MD, of Brigham and Women’s Hospital and Harvard Medical School, both in Boston, said in an interview.
“The sad reality is there aren’t very many large randomized clinical trials with this illness and so what a group of very experienced clinicians did was to gather their collective experience and report it as that. It’s largely uncontrolled experience, but from people who have seen a lot of patients, for what it’s worth to the medical community.”
Dr. Komaroff also advised that clinicians watch out for ME/CFS in patients with long COVID. “If we find that those called long COVID meet ME/CFS criteria, the reason for knowing that is that there are already some treatments that according to experienced clinicians are helpful for ME/CFS, and it would be perfectly appropriate to try some of them in long COVID, particularly the ones that have minimal adverse reactions.”
The guidelines project was supported by the Open Medicine Foundation. Dr. Komaroff reported receiving personal fees from Serimmune outside the submitted work. Dr. Chu has no disclosures.
New consensus recommendations address diagnosis and management of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), with advice that may also be helpful for patients with lingering symptoms following acute COVID-19 infection.
The document was published online Aug. 25, 2021, in the Mayo Clinic Proceedings by the 23-member U.S. ME/CFS Clinician Coalition, headed by Lucinda Bateman, MD, of the Bateman Horne Center of Excellence, Salt Lake City. The document is the culmination of work that began with a summit held at the center in March 2018.
The target audience is both generalist and specialist health care providers. While ME/CFS is estimated to affect up to 2.5 million Americans, more than 90% are either undiagnosed or misdiagnosed with other conditions such as depression. And those who are diagnosed often receive inappropriate, outdated treatments such as psychotherapy and exercise prescriptions.
“Despite myalgic encephalomyelitis/chronic fatigue syndrome affecting millions of people worldwide, many clinicians lack the knowledge to appropriately diagnose or manage ME/CFS. Unfortunately, clinical guidance has been scarce, obsolete, or potentially harmful,” Dr. Bateman and colleagues wrote.
The urgency of appropriate recognition and management of ME/CFS has increased as growing numbers of people are exhibiting signs and symptoms of ME/CFS following acute COVID-19 infection. This isn’t surprising because the illness has long been linked to other infections, including Epstein-Barr virus, the authors noted.
The document covers the epidemiology, impact, and prognosis of ME/CFS, as well as etiology and pathophysiology. “Scientific studies demonstrate multiple dysfunctional organ systems, including neuro, immune, and metabolic, in ME/CFS. These findings are not explained merely by deconditioning,” document coauthor Lily Chu, MD, an independent consultant in Burlingame, Calif., said in an interview.
The document reviews the 2015 U.S. Institute of Medicine (now Academy of Medicine) diagnostic criteria that are now also recommended by the Centers for Disease Control and Prevention. They are based on four main symptoms: substantial reduction or impairment in the ability to engage in preillness levels of occupational, educational, social or personal activities for longer than 6 months; postexertional malaise, a worsening of all current symptoms, that patients often describe as a “crash”; unrefreshing sleep; and cognitive impairment and/or orthostatic intolerance.
“The new diagnostic criteria focusing on the key symptom of postexertional malaise rather than chronic fatigue, which is common in many conditions, may make the diagnostic process quicker and more accurate. Diagnosis now is both an inclusionary and not just exclusionary process, so it’s not necessary to eliminate all causes of fatigue. Diagnose patients who fit the criteria and be alert for it in people with persistent symptoms post COVID,” Dr. Chu said.
The document provides advice for taking a clinical history to obtain the information necessary for making the diagnosis, including use of laboratory testing to rule out other conditions. Physical exams, while they may not reveal specific abnormalities, may help in identifying comorbidities and ruling out alternative diagnoses.
A long list of nonpharmacologic and pharmacologic treatment and management approaches is offered for each of the individual core and common ME/CFS symptoms, including postexertional malaise, orthostatic intolerance, sleep issues, cognitive dysfunction and fatigue, immune dysfunction, pain, and gastrointestinal issues.
The document recommends against using the “outdated standard of care” cognitive-behavioral therapy and graded exercise therapy as primary treatments for the illness. Instead, the authors recommend teaching patients “pacing,” an individualized approach to energy conservation aimed at minimizing the frequency, duration, and severity of postexertional malaise.
Clinicians are also advised to assess patients’ daily living needs and provide support, including acquiring handicap placards, work or school accommodations, and disability benefits.
“There are things clinicians can do now to help patients even without a disease-modifying treatment. These are actions they are already familiar with and carry out for people with other chronic diseases, which often have limited treatment options as well. Don’t underestimate the importance and value of supportive care for patients.” Dr. Chu said.
The recommendations are based primarily on clinical expertise because there are very few randomized trials, and much of the evidence from other types of trials has been flawed, document coauthor Anthony L. Komaroff, MD, of Brigham and Women’s Hospital and Harvard Medical School, both in Boston, said in an interview.
“The sad reality is there aren’t very many large randomized clinical trials with this illness and so what a group of very experienced clinicians did was to gather their collective experience and report it as that. It’s largely uncontrolled experience, but from people who have seen a lot of patients, for what it’s worth to the medical community.”
Dr. Komaroff also advised that clinicians watch out for ME/CFS in patients with long COVID. “If we find that those called long COVID meet ME/CFS criteria, the reason for knowing that is that there are already some treatments that according to experienced clinicians are helpful for ME/CFS, and it would be perfectly appropriate to try some of them in long COVID, particularly the ones that have minimal adverse reactions.”
The guidelines project was supported by the Open Medicine Foundation. Dr. Komaroff reported receiving personal fees from Serimmune outside the submitted work. Dr. Chu has no disclosures.
FROM THE MAYO CLINIC PROCEEDINGS
FDA approves rapid-acting insulin, Lyumjev, for pump use
The Food and Drug Administration has expanded the label for Eli Lilly’s ultra–rapid-acting insulin lispro-aabc injection 100 units/mL (Lyumjev) for use in insulin pumps.
Lyumjev (insulin lispro-aabc injection 100 and 200 units/mL) was initially approved in June 2020 to improve glycemic control in adults with type 1 or type 2 diabetes. That formulation is administered by injection from a pen or syringe. Now, the 100 units/mL formulation can also be delivered via continuous subcutaneous insulin infusion with an insulin pump.
Lyumjev will compete with Novo Nordisk’s fast-acting insulin aspart injection 100 units/mL (Fiasp). Fiasp had a head start: it was approved for use in adults in the United States in September 2017. It was approved for use in insulin pumps in October 2019 and for use in children with diabetes in January 2020.
The new approval for Lyumjev was based on data from a phase 3 trial, PRONTO-Pump-2. That trial, which included 432 participants with type 1 diabetes, confirmed the drug’s safety and efficacy when used in pumps.
The study met the primary endpoint of noninferiority in reduction of hemoglobin A1c from baseline to week 16, compared with insulin lispro (Humalog 100 units/mL). It was superior in both 1-hour and 2-hour postprandial glucose reduction when delivered 0-2 minutes before meals, according to a Lilly statement.
Patients who cannot afford the drug can go to www.insulinaffordability.com for assistance. Those with commercial insurance can also visit www.Lyumjev.com to access the Lyumjev Savings Card.
Lyumjev is available in several global markets, including Japan and the European Union, where it is also approved for use in insulin pumps.
A version of this article first appeared on Medscape.com.
The Food and Drug Administration has expanded the label for Eli Lilly’s ultra–rapid-acting insulin lispro-aabc injection 100 units/mL (Lyumjev) for use in insulin pumps.
Lyumjev (insulin lispro-aabc injection 100 and 200 units/mL) was initially approved in June 2020 to improve glycemic control in adults with type 1 or type 2 diabetes. That formulation is administered by injection from a pen or syringe. Now, the 100 units/mL formulation can also be delivered via continuous subcutaneous insulin infusion with an insulin pump.
Lyumjev will compete with Novo Nordisk’s fast-acting insulin aspart injection 100 units/mL (Fiasp). Fiasp had a head start: it was approved for use in adults in the United States in September 2017. It was approved for use in insulin pumps in October 2019 and for use in children with diabetes in January 2020.
The new approval for Lyumjev was based on data from a phase 3 trial, PRONTO-Pump-2. That trial, which included 432 participants with type 1 diabetes, confirmed the drug’s safety and efficacy when used in pumps.
The study met the primary endpoint of noninferiority in reduction of hemoglobin A1c from baseline to week 16, compared with insulin lispro (Humalog 100 units/mL). It was superior in both 1-hour and 2-hour postprandial glucose reduction when delivered 0-2 minutes before meals, according to a Lilly statement.
Patients who cannot afford the drug can go to www.insulinaffordability.com for assistance. Those with commercial insurance can also visit www.Lyumjev.com to access the Lyumjev Savings Card.
Lyumjev is available in several global markets, including Japan and the European Union, where it is also approved for use in insulin pumps.
A version of this article first appeared on Medscape.com.
The Food and Drug Administration has expanded the label for Eli Lilly’s ultra–rapid-acting insulin lispro-aabc injection 100 units/mL (Lyumjev) for use in insulin pumps.
Lyumjev (insulin lispro-aabc injection 100 and 200 units/mL) was initially approved in June 2020 to improve glycemic control in adults with type 1 or type 2 diabetes. That formulation is administered by injection from a pen or syringe. Now, the 100 units/mL formulation can also be delivered via continuous subcutaneous insulin infusion with an insulin pump.
Lyumjev will compete with Novo Nordisk’s fast-acting insulin aspart injection 100 units/mL (Fiasp). Fiasp had a head start: it was approved for use in adults in the United States in September 2017. It was approved for use in insulin pumps in October 2019 and for use in children with diabetes in January 2020.
The new approval for Lyumjev was based on data from a phase 3 trial, PRONTO-Pump-2. That trial, which included 432 participants with type 1 diabetes, confirmed the drug’s safety and efficacy when used in pumps.
The study met the primary endpoint of noninferiority in reduction of hemoglobin A1c from baseline to week 16, compared with insulin lispro (Humalog 100 units/mL). It was superior in both 1-hour and 2-hour postprandial glucose reduction when delivered 0-2 minutes before meals, according to a Lilly statement.
Patients who cannot afford the drug can go to www.insulinaffordability.com for assistance. Those with commercial insurance can also visit www.Lyumjev.com to access the Lyumjev Savings Card.
Lyumjev is available in several global markets, including Japan and the European Union, where it is also approved for use in insulin pumps.
A version of this article first appeared on Medscape.com.
Half abandon metformin within a year of diabetes diagnosis
Nearly half of adults prescribed metformin after a new diagnosis of type 2 diabetes have stopped taking it by 1 year, new data show.
The findings, from a retrospective analysis of administrative data from Alberta, Canada, during 2012-2017, also show that the fall-off in metformin adherence was most dramatic during the first 30 days, and in most cases, there was no concomitant substitution of another glucose-lowering drug.
While the majority with newly diagnosed type 2 diabetes were prescribed metformin as first-line therapy, patients started on other agents incurred far higher medication and health care costs.
The data were recently published online in Diabetic Medicine by David J. T. Campbell, MD, PhD, of the University of Calgary (Alta.), and colleagues.
“We realized that even if someone is prescribed metformin that doesn’t mean they’re staying on metformin even for a year ... the drop-off rate is really quite abrupt,” Dr. Campbell said in an interview. Most who discontinued had A1c levels above 7.5%, so it wasn’t that they no longer needed glucose-lowering medication, he noted.
People don’t understand chronic use; meds don’t make you feel better
One reason for the discontinuations, he said, is that patients might not realize they need to keep taking the medication.
“When a physician is seeing a person with newly diagnosed diabetes, I think it’s important to remember that they might not know the implications of having a chronic condition. A lot of times we’re quick to prescribe metformin and forget about it. ... Physicians might write a script for 3 months and three refills and not see the patient again for a year ... We may need to keep a closer eye on these folks and have more regular follow-up, and make sure they’re getting early diabetes education.”
Side effects are an issue, but not for most. “Any clinician who prescribes metformin knows there are side effects, such as upset stomach, diarrhea, and nausea. But certainly, it’s not half [who experience these]. ... A lot of people just aren’t accepting of having to take it lifelong, especially since they probably don’t feel any better on it,” Dr. Campbell said.
James Flory, MD, an endocrinologist at Memorial Sloan Kettering Cancer Center, New York, said in an interview that about 25% of patients taking metformin experience gastrointestinal side effects.
Moreover, he noted that the drop-off in adherence is also seen with antihypertensive and lipid-lowering drugs that have fewer side effects than those of metformin. He pointed to a “striking example” of this, a 2011 randomized trial published in the New England Journal of Medicine, and as reported by this news organization, showing overall rates of adherence to these medications was around 50%, even among people who had already had a myocardial infarction.
“People really don’t want to be on these medications. ... They have an aversion to being medicalized and taking pills. If they’re not being pretty consistently prompted and reminded and urged to take them, I think people will find rationalizations, reasons for stopping. ... I think people want to handle things through lifestyle and not be on a drug,” noted Dr. Flory, who has published on the subject of metformin adherence.
“These drugs don’t make people feel better. None of them do. At best they don’t make you feel worse. You have to really believe in the chronic condition and believe that it’s hurting you and that you can’t handle it without the drugs to motivate you to keep taking them,” Dr. Flory explained.
Communication with the patient is key, he added.
“I don’t have empirical data to support this, but I feel it’s helpful to acknowledge the downsides to patients. I tell them to let me know [if they’re having side effects] and we’ll work on it. Don’t just stop taking the drug and never circle back.” At the same time, he added, “I think it’s important to emphasize metformin’s safety and effectiveness.”
For patients experiencing gastrointestinal side effects, options including switching to extended-release metformin or lowering the dose.
Also, while patients are typically advised to take metformin with food, some experience diarrhea when they do that and prefer to take it at bedtime than with dinner. “If that’s what works for people, that’s what they should do,” Dr. Flory advised.
“It doesn’t take a lot of time to emphasize to patients the safety and this level of flexibility and control they should be able to exercise over how much they take and when. These things should really help.”
Metformin usually prescribed, but not always taken
Dr. Campbell and colleagues analyzed 17,932 individuals with incident type 2 diabetes diagnosed between April 1, 2012, and March 31, 2017. Overall, 89% received metformin monotherapy as their initial diabetes prescription, 7.6% started metformin in combination with another glucose-lowering drug, and 3.3% were prescribed a nonmetformin diabetes medication. (Those prescribed insulin as their first diabetes medication were excluded.)
The most commonly coprescribed drugs with metformin were sulfonylureas (in 47%) and DPP-4 inhibitors (28%). Of those initiated with only nonmetformin medications, sulfonylureas were also the most common (53%) and dipeptidyl peptidase-4 (DPP-4) inhibitors second (21%).
The metformin prescribing rate of 89% reflects current guidelines, Dr. Campbell noted.
“In hypertension, clinicians weren’t really following the guidelines ... they were prescribing more expensive drugs than the guidelines say. ... We showed that in diabetes, contrary to hypertension, clinicians really are generally following the clinical practice guidelines. ... The vast majority who are started on metformin are started on monotherapy. That was reassuring to us. We’re not paying for a bunch of expensive drugs when metformin would do just as well,” he said.
However, the proportion who had been dispensed metformin to cover the prescribed number of days dropped by about 10% after 30 days, by a further 10% after 90 days, and yet again after 100 days, resulting in just 54% remaining on the drug by 1 year.
Factors associated with higher adherence included older age, presence of comorbidities, and highest versus lowest neighborhood income quintile.
Those who had been prescribed nonmetformin monotherapy had about twice the total health care costs of those initially prescribed metformin monotherapy. Higher health care costs were seen among patients who were younger, had lower incomes, had higher baseline A1c, had more comorbidities, and were men.
How will the newer type 2 diabetes drugs change prescribing?
Dr. Campbell noted that “a lot has changed since 2017. ... At least in Canada, the sodium-glucose cotransporter 2 (SGLT2) inhibitors and glucagon-like peptide 1 receptor agonists were supposed to be reserved as second-line agents in patients with cardiovascular disease, but more and more they’re being thought of as first-line agents in high-risk patients.”
“I suspect as those guidelines are transmitted to primary care colleagues who are doing the bulk of the prescribing we’ll see more and more uptake of these agents.”
Indeed, Dr. Flory said, “The metformin data at this point are very dated and the body of trials showing health benefits for it is actually very weak compared to the big trials that have been done for the newer agents, to the point where you can imagine a consensus gradually forming where people start to recommend something other than metformin for nearly everybody with type 2 diabetes. The cost implications are just huge, and I think the safety implications as well.”
According to Dr. Flory, the SGLT2 inhibitors “are fundamentally not as safe as metformin. I think they’re very safe drugs – large good studies have established that – but if you’re going to give drugs to a large number of people who are pretty healthy at baseline the safety standards have to be pretty high.”
Just the elevated risk of euglycemic diabetic ketoacidosis alone is reason for pause, Dr. Flory said. “Even though it’s manageable ... metformin just doesn’t have a safety problem like that. I’m very comfortable prescribing SGLT2 inhibitors, but If I’m going to give a drug to a million people and have nothing go wrong with any of them, that would be metformin, not an SGLT2 [inhibitor].”
Dr. Campbell and colleagues will be conducting a follow-up of prescribing data through 2019, which will of course include the newer agents. They’ll also investigate reasons for drug discontinuation and outcomes of those who discontinue versus continue metformin.
Dr. Campbell has reported no relevant financial relationships. Dr. Flory consults for a legal firm on litigation related to insulin analog pricing issues, not for or pertaining to a specific company.
A version of this article first appeared on Medscape.com.
Nearly half of adults prescribed metformin after a new diagnosis of type 2 diabetes have stopped taking it by 1 year, new data show.
The findings, from a retrospective analysis of administrative data from Alberta, Canada, during 2012-2017, also show that the fall-off in metformin adherence was most dramatic during the first 30 days, and in most cases, there was no concomitant substitution of another glucose-lowering drug.
While the majority with newly diagnosed type 2 diabetes were prescribed metformin as first-line therapy, patients started on other agents incurred far higher medication and health care costs.
The data were recently published online in Diabetic Medicine by David J. T. Campbell, MD, PhD, of the University of Calgary (Alta.), and colleagues.
“We realized that even if someone is prescribed metformin that doesn’t mean they’re staying on metformin even for a year ... the drop-off rate is really quite abrupt,” Dr. Campbell said in an interview. Most who discontinued had A1c levels above 7.5%, so it wasn’t that they no longer needed glucose-lowering medication, he noted.
People don’t understand chronic use; meds don’t make you feel better
One reason for the discontinuations, he said, is that patients might not realize they need to keep taking the medication.
“When a physician is seeing a person with newly diagnosed diabetes, I think it’s important to remember that they might not know the implications of having a chronic condition. A lot of times we’re quick to prescribe metformin and forget about it. ... Physicians might write a script for 3 months and three refills and not see the patient again for a year ... We may need to keep a closer eye on these folks and have more regular follow-up, and make sure they’re getting early diabetes education.”
Side effects are an issue, but not for most. “Any clinician who prescribes metformin knows there are side effects, such as upset stomach, diarrhea, and nausea. But certainly, it’s not half [who experience these]. ... A lot of people just aren’t accepting of having to take it lifelong, especially since they probably don’t feel any better on it,” Dr. Campbell said.
James Flory, MD, an endocrinologist at Memorial Sloan Kettering Cancer Center, New York, said in an interview that about 25% of patients taking metformin experience gastrointestinal side effects.
Moreover, he noted that the drop-off in adherence is also seen with antihypertensive and lipid-lowering drugs that have fewer side effects than those of metformin. He pointed to a “striking example” of this, a 2011 randomized trial published in the New England Journal of Medicine, and as reported by this news organization, showing overall rates of adherence to these medications was around 50%, even among people who had already had a myocardial infarction.
“People really don’t want to be on these medications. ... They have an aversion to being medicalized and taking pills. If they’re not being pretty consistently prompted and reminded and urged to take them, I think people will find rationalizations, reasons for stopping. ... I think people want to handle things through lifestyle and not be on a drug,” noted Dr. Flory, who has published on the subject of metformin adherence.
“These drugs don’t make people feel better. None of them do. At best they don’t make you feel worse. You have to really believe in the chronic condition and believe that it’s hurting you and that you can’t handle it without the drugs to motivate you to keep taking them,” Dr. Flory explained.
Communication with the patient is key, he added.
“I don’t have empirical data to support this, but I feel it’s helpful to acknowledge the downsides to patients. I tell them to let me know [if they’re having side effects] and we’ll work on it. Don’t just stop taking the drug and never circle back.” At the same time, he added, “I think it’s important to emphasize metformin’s safety and effectiveness.”
For patients experiencing gastrointestinal side effects, options including switching to extended-release metformin or lowering the dose.
Also, while patients are typically advised to take metformin with food, some experience diarrhea when they do that and prefer to take it at bedtime than with dinner. “If that’s what works for people, that’s what they should do,” Dr. Flory advised.
“It doesn’t take a lot of time to emphasize to patients the safety and this level of flexibility and control they should be able to exercise over how much they take and when. These things should really help.”
Metformin usually prescribed, but not always taken
Dr. Campbell and colleagues analyzed 17,932 individuals with incident type 2 diabetes diagnosed between April 1, 2012, and March 31, 2017. Overall, 89% received metformin monotherapy as their initial diabetes prescription, 7.6% started metformin in combination with another glucose-lowering drug, and 3.3% were prescribed a nonmetformin diabetes medication. (Those prescribed insulin as their first diabetes medication were excluded.)
The most commonly coprescribed drugs with metformin were sulfonylureas (in 47%) and DPP-4 inhibitors (28%). Of those initiated with only nonmetformin medications, sulfonylureas were also the most common (53%) and dipeptidyl peptidase-4 (DPP-4) inhibitors second (21%).
The metformin prescribing rate of 89% reflects current guidelines, Dr. Campbell noted.
“In hypertension, clinicians weren’t really following the guidelines ... they were prescribing more expensive drugs than the guidelines say. ... We showed that in diabetes, contrary to hypertension, clinicians really are generally following the clinical practice guidelines. ... The vast majority who are started on metformin are started on monotherapy. That was reassuring to us. We’re not paying for a bunch of expensive drugs when metformin would do just as well,” he said.
However, the proportion who had been dispensed metformin to cover the prescribed number of days dropped by about 10% after 30 days, by a further 10% after 90 days, and yet again after 100 days, resulting in just 54% remaining on the drug by 1 year.
Factors associated with higher adherence included older age, presence of comorbidities, and highest versus lowest neighborhood income quintile.
Those who had been prescribed nonmetformin monotherapy had about twice the total health care costs of those initially prescribed metformin monotherapy. Higher health care costs were seen among patients who were younger, had lower incomes, had higher baseline A1c, had more comorbidities, and were men.
How will the newer type 2 diabetes drugs change prescribing?
Dr. Campbell noted that “a lot has changed since 2017. ... At least in Canada, the sodium-glucose cotransporter 2 (SGLT2) inhibitors and glucagon-like peptide 1 receptor agonists were supposed to be reserved as second-line agents in patients with cardiovascular disease, but more and more they’re being thought of as first-line agents in high-risk patients.”
“I suspect as those guidelines are transmitted to primary care colleagues who are doing the bulk of the prescribing we’ll see more and more uptake of these agents.”
Indeed, Dr. Flory said, “The metformin data at this point are very dated and the body of trials showing health benefits for it is actually very weak compared to the big trials that have been done for the newer agents, to the point where you can imagine a consensus gradually forming where people start to recommend something other than metformin for nearly everybody with type 2 diabetes. The cost implications are just huge, and I think the safety implications as well.”
According to Dr. Flory, the SGLT2 inhibitors “are fundamentally not as safe as metformin. I think they’re very safe drugs – large good studies have established that – but if you’re going to give drugs to a large number of people who are pretty healthy at baseline the safety standards have to be pretty high.”
Just the elevated risk of euglycemic diabetic ketoacidosis alone is reason for pause, Dr. Flory said. “Even though it’s manageable ... metformin just doesn’t have a safety problem like that. I’m very comfortable prescribing SGLT2 inhibitors, but If I’m going to give a drug to a million people and have nothing go wrong with any of them, that would be metformin, not an SGLT2 [inhibitor].”
Dr. Campbell and colleagues will be conducting a follow-up of prescribing data through 2019, which will of course include the newer agents. They’ll also investigate reasons for drug discontinuation and outcomes of those who discontinue versus continue metformin.
Dr. Campbell has reported no relevant financial relationships. Dr. Flory consults for a legal firm on litigation related to insulin analog pricing issues, not for or pertaining to a specific company.
A version of this article first appeared on Medscape.com.
Nearly half of adults prescribed metformin after a new diagnosis of type 2 diabetes have stopped taking it by 1 year, new data show.
The findings, from a retrospective analysis of administrative data from Alberta, Canada, during 2012-2017, also show that the fall-off in metformin adherence was most dramatic during the first 30 days, and in most cases, there was no concomitant substitution of another glucose-lowering drug.
While the majority with newly diagnosed type 2 diabetes were prescribed metformin as first-line therapy, patients started on other agents incurred far higher medication and health care costs.
The data were recently published online in Diabetic Medicine by David J. T. Campbell, MD, PhD, of the University of Calgary (Alta.), and colleagues.
“We realized that even if someone is prescribed metformin that doesn’t mean they’re staying on metformin even for a year ... the drop-off rate is really quite abrupt,” Dr. Campbell said in an interview. Most who discontinued had A1c levels above 7.5%, so it wasn’t that they no longer needed glucose-lowering medication, he noted.
People don’t understand chronic use; meds don’t make you feel better
One reason for the discontinuations, he said, is that patients might not realize they need to keep taking the medication.
“When a physician is seeing a person with newly diagnosed diabetes, I think it’s important to remember that they might not know the implications of having a chronic condition. A lot of times we’re quick to prescribe metformin and forget about it. ... Physicians might write a script for 3 months and three refills and not see the patient again for a year ... We may need to keep a closer eye on these folks and have more regular follow-up, and make sure they’re getting early diabetes education.”
Side effects are an issue, but not for most. “Any clinician who prescribes metformin knows there are side effects, such as upset stomach, diarrhea, and nausea. But certainly, it’s not half [who experience these]. ... A lot of people just aren’t accepting of having to take it lifelong, especially since they probably don’t feel any better on it,” Dr. Campbell said.
James Flory, MD, an endocrinologist at Memorial Sloan Kettering Cancer Center, New York, said in an interview that about 25% of patients taking metformin experience gastrointestinal side effects.
Moreover, he noted that the drop-off in adherence is also seen with antihypertensive and lipid-lowering drugs that have fewer side effects than those of metformin. He pointed to a “striking example” of this, a 2011 randomized trial published in the New England Journal of Medicine, and as reported by this news organization, showing overall rates of adherence to these medications was around 50%, even among people who had already had a myocardial infarction.
“People really don’t want to be on these medications. ... They have an aversion to being medicalized and taking pills. If they’re not being pretty consistently prompted and reminded and urged to take them, I think people will find rationalizations, reasons for stopping. ... I think people want to handle things through lifestyle and not be on a drug,” noted Dr. Flory, who has published on the subject of metformin adherence.
“These drugs don’t make people feel better. None of them do. At best they don’t make you feel worse. You have to really believe in the chronic condition and believe that it’s hurting you and that you can’t handle it without the drugs to motivate you to keep taking them,” Dr. Flory explained.
Communication with the patient is key, he added.
“I don’t have empirical data to support this, but I feel it’s helpful to acknowledge the downsides to patients. I tell them to let me know [if they’re having side effects] and we’ll work on it. Don’t just stop taking the drug and never circle back.” At the same time, he added, “I think it’s important to emphasize metformin’s safety and effectiveness.”
For patients experiencing gastrointestinal side effects, options including switching to extended-release metformin or lowering the dose.
Also, while patients are typically advised to take metformin with food, some experience diarrhea when they do that and prefer to take it at bedtime than with dinner. “If that’s what works for people, that’s what they should do,” Dr. Flory advised.
“It doesn’t take a lot of time to emphasize to patients the safety and this level of flexibility and control they should be able to exercise over how much they take and when. These things should really help.”
Metformin usually prescribed, but not always taken
Dr. Campbell and colleagues analyzed 17,932 individuals with incident type 2 diabetes diagnosed between April 1, 2012, and March 31, 2017. Overall, 89% received metformin monotherapy as their initial diabetes prescription, 7.6% started metformin in combination with another glucose-lowering drug, and 3.3% were prescribed a nonmetformin diabetes medication. (Those prescribed insulin as their first diabetes medication were excluded.)
The most commonly coprescribed drugs with metformin were sulfonylureas (in 47%) and DPP-4 inhibitors (28%). Of those initiated with only nonmetformin medications, sulfonylureas were also the most common (53%) and dipeptidyl peptidase-4 (DPP-4) inhibitors second (21%).
The metformin prescribing rate of 89% reflects current guidelines, Dr. Campbell noted.
“In hypertension, clinicians weren’t really following the guidelines ... they were prescribing more expensive drugs than the guidelines say. ... We showed that in diabetes, contrary to hypertension, clinicians really are generally following the clinical practice guidelines. ... The vast majority who are started on metformin are started on monotherapy. That was reassuring to us. We’re not paying for a bunch of expensive drugs when metformin would do just as well,” he said.
However, the proportion who had been dispensed metformin to cover the prescribed number of days dropped by about 10% after 30 days, by a further 10% after 90 days, and yet again after 100 days, resulting in just 54% remaining on the drug by 1 year.
Factors associated with higher adherence included older age, presence of comorbidities, and highest versus lowest neighborhood income quintile.
Those who had been prescribed nonmetformin monotherapy had about twice the total health care costs of those initially prescribed metformin monotherapy. Higher health care costs were seen among patients who were younger, had lower incomes, had higher baseline A1c, had more comorbidities, and were men.
How will the newer type 2 diabetes drugs change prescribing?
Dr. Campbell noted that “a lot has changed since 2017. ... At least in Canada, the sodium-glucose cotransporter 2 (SGLT2) inhibitors and glucagon-like peptide 1 receptor agonists were supposed to be reserved as second-line agents in patients with cardiovascular disease, but more and more they’re being thought of as first-line agents in high-risk patients.”
“I suspect as those guidelines are transmitted to primary care colleagues who are doing the bulk of the prescribing we’ll see more and more uptake of these agents.”
Indeed, Dr. Flory said, “The metformin data at this point are very dated and the body of trials showing health benefits for it is actually very weak compared to the big trials that have been done for the newer agents, to the point where you can imagine a consensus gradually forming where people start to recommend something other than metformin for nearly everybody with type 2 diabetes. The cost implications are just huge, and I think the safety implications as well.”
According to Dr. Flory, the SGLT2 inhibitors “are fundamentally not as safe as metformin. I think they’re very safe drugs – large good studies have established that – but if you’re going to give drugs to a large number of people who are pretty healthy at baseline the safety standards have to be pretty high.”
Just the elevated risk of euglycemic diabetic ketoacidosis alone is reason for pause, Dr. Flory said. “Even though it’s manageable ... metformin just doesn’t have a safety problem like that. I’m very comfortable prescribing SGLT2 inhibitors, but If I’m going to give a drug to a million people and have nothing go wrong with any of them, that would be metformin, not an SGLT2 [inhibitor].”
Dr. Campbell and colleagues will be conducting a follow-up of prescribing data through 2019, which will of course include the newer agents. They’ll also investigate reasons for drug discontinuation and outcomes of those who discontinue versus continue metformin.
Dr. Campbell has reported no relevant financial relationships. Dr. Flory consults for a legal firm on litigation related to insulin analog pricing issues, not for or pertaining to a specific company.
A version of this article first appeared on Medscape.com.