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ORLANDO – according to a draft consensus report on the management of hyperglycemia in patients with type 2 diabetes mellitus (T2DM).
The report, a project of the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD), is currently under review and will be presented in final form Oct. 5 at the EASD annual meeting in Berlin.
The current draft calls, generally, for the initial use of metformin followed by the addition of antihyperglycemic medications based on patient comorbidities and concerns “as we await answers to the many questions that remain,” John Buse, MD, PhD, cochair of the consensus statement writing group, said during a summary of the draft recommendations at the annual scientific sessions of the ADA.
The first step, however, is to assess key patient characteristics; these can include comorbidities, clinical characteristics, issues such as motivation and depression, and cultural and socio-economic context, Deborah J. Wexler, MD, 1 of 10 writing group members, said during the same presentation.
Patients with ASCVD or heart failure
Given new evidence from trials such as EMPA-REG and LEADER showing outcomes benefits with the use of specific antihyperglycemic medications in patients with established atherosclerotic cardiovascular disease (ASCVD), an important early step in the proposed approach is to consider the presence or absence of ASCVD and heart failure, said Dr. Wexler of Massachusetts General Hospital, Boston.
“The presence of cardiovascular disease is a compelling indication for the selection of certain glucose-lowering drugs,” she said.
The draft consensus recommendation in this regard – a new recommendation since the last consensus report in 2015 – differentiates between T2DM patients in whom ASCVD predominates and those in whom heart failure predominates.
“What’s new since 2015 is that we recommend that these comorbidities be considered first and foremost because they do influence the choice of a particular glucose-lowering medication, and the recommendation is that, among patients with type 2 diabetes with established ASCVD, sodium-glucose cotransporter 2 [SGLT2] inhibitors or glucagonlike peptide 1 [GLP-1] receptor agonists with proven cardiovascular benefit are recommended as part of glycemic management,” she said.
However, it is important to note that ASCVD is defined differently across trials, and patients considered in the development of these recommendations are those with much higher cardiovascular risk than the average patient with T2DM, she added.
“It’s also important to keep in mind that each cardiovascular outcomes trial, while large, is but a single experiment ... and we don’t have the benefit of replication,” she said, noting that it is not always clear whether differences in trial findings within a drug class are related to trial design or true differences in individual medications.
“So we try to read into them and interpret these data, but it’s just important to consider that ... and when evidence suggests a hierarchy, we noted that,” she said.
That said, if ASCVD predominates, the recommendation is for treatment with either a GLP-1 receptor agonist with proven cardiovascular benefit (favoring liraglutide over semaglutide and over long-acting exenatide) or an SGLT2 inhibitor with proven cardiovascular benefit if estimated glomerular filtration (eGFR) is adequate (favoring empagliflozin over canagliflozin).
These recommendations are based on the LEADER trial finding of significant improvement in the primary outcome of cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke with liraglutide vs. placebo (hazard ratio, 0.87; number needed to treat [NNT], 52 over 3.8 years) and on the EMPA-REG trial finding of significant improvement in the same primary outcome with empagliflozin vs. placebo (HR, 0.86; NNT, 62 over 3.1 years).
Keep in mind that there is no evidence of cardiovascular benefit from these treatments in patients at lower risk and also that the “expensive and complicated” combination of an SGLT2 inhibitor and a GLP-1 receptor agonist has not been tested in cardiovascular outcomes trials and there is no evidence of additional benefit from a cardiovascular perspective with this combination, Dr. Wexler said.
If heart failure predominates, the recommendations call for consideration of an SGLT2 inhibitor as part of the treatment strategy because patients with T2DM are at increased risk for heart failure with reduced or preserved ejection fraction and because significant, consistent reduction in hospitalizations for heart failure were seen in SGLT2 inhibitor trials, writing group member Peter Rossing, MD, explained during the session; he noted, however, that the trials were not designed to adjudicate heart failure and that most patients did not have clinical heart failure at baseline.
In those in whom SGLT2 inhibitors are contraindicated – because of impaired renal function, for example – a GLP-1 receptor agonist with proven cardiovascular benefit is recommended.
“Then we suggest that if you are still not at [hemoglobin A1c] target, you should avoid thiazolidinediones [TZD] because of the risk of fluid overload, and you could then consider, if needed, combining an SGLT2-inhibitor and a GLP-1 receptor agonist ... or you could use a [dipeptidyl peptidase–4 (DPP-4) inhibitor] if you are not on an GLP-1 receptor agonist. And we point out that saxagliptin has unfavorable data on heart failure,” Dr. Rossing of Steno Diabetes Center, Copenhagen, said, noting that basal insulin or sulfonylurea are other alternative options.
In EMPA-REG, hospitalization for heart failure was reduced by 35% with empagliflozin vs. placebo (HR, 0.65; NNT, 71 over 3 years), and similar findings were seen in the CANVAS trial. In LEADER, a nonsignificant 13% reduction was seen in hospitalization for heart failure with liraglutide vs. placebo (HR, 0.87). However, this was a secondary outcome; ongoing studies are addressing heart failure as a primary outcome, Dr. Rossing said.
The report also includes a recommendation that, for patients with chronic kidney disease and high cardiovascular risk, GLP-1 receptor agonists and SGLT2 inhibitors can be used but with dose reductions for some medications – several of which have demonstrated renal benefit and cardiovascular benefits in those populations and can be considered as part of treatment.
Lifestyle management and medication
With respect to lifestyle management and pharmacologic treatment, the proposed recommendations, which are based on several large trials, state that an individualized program of medical nutritional therapy should be offered to all patients and that all overweight and obese patients with diabetes should be advised of the health benefits of weight loss. They also should be encouraged to engage in a program of intensive lifestyle management, which may include food substitution, writing group member Walter Kernan, MD, said at the meeting.
In the DiRECT Trial, the average weight loss was about 10 kg in an intervention group that had complete food replacement for 3 months followed by gradual food reintroduction and ongoing counseling versus about 1 kg in controls, and the diabetes remission rate at 1 year was 46% versus 4%, respectively, said Dr. Kernan of Yale University, New Haven, Conn.
In addition, intentional physical activity is known to improve glycemic control and should be encouraged in all patients with T2DM, he said.
“The foundation of hyperglycemia treatment in type 2 diabetes is, for sure, lifestyle modification,” said group member Geltrude Mingrone, MD, of Catholic University of the Sacred Heart in Rome. “Those patients who are very well motivated and adherent to the [recommendations] can achieve very good results,” she added.
In those in whom lifestyle modification fails to lead to adequate improvement, “a pretty large medication portfolio is available,” she said, adding that the choice of treatment should be based on safety, efficacy, cost, and convenience, factors which are described in the statement.
The hope is that the final consensus statement will make it easier to navigate them, she said.
Finally, bariatric surgery can be considered a very effective salvage therapy, Dr. Mingrone said, noting that only lifestyle modification or bariatric surgery will lead to diabetes remission.
The draft consensus recommendation for bariatric surgery is to consider it in patients with T2DM and a body mass index of 40 kg/m2 or greater (37.5 or greater in those of Asian ancestry), regardless of the level of glycemic control, and in those with BMI of 35-39.9 (32.5-37.4 in those of Asian ancestry) when hyperglycemia is inadequately controlled despite lifestyle and optimal medical therapy.
Decision making and injectable therapies
The statement includes decision-making strategies and algorithms for treatment and addresses issues such as choosing antihyperglycemic medications when weight is a concern (consider an SGLT2 inhibitor or a GLP-1 receptor agonist with good efficacy for weight loss to start – or a combination of both if HbA1c is not on target), when minimizing hypoglycemia is the priority (consider adding an SGLT2 inhibitors, GLP-1 receptor agonist, a TZD, or a DPP-4 inhibitor to metformin therapy to start, followed by reintensification of lifestyle modifications and combination therapies if HbA1c is above target), and when drug costs need to be minimized, as well as when and how to initiate injectable therapies, according to writing group members David D’Alessio, MD, of Duke University, Durham, N.C, and Chantal Mathieu, MD, of Katholieke Universteit Leuven (Belgium).
The draft consensus recommendation regarding the latter is that, in patients who need the greater glucose-lowering effect of an injectable medication, GLP-1 receptor agonists should be considered as the first choice and that, when insulin is the medication of choice on the basis of clinical characteristics, basal insulin is preferred. Additionally, in patients who are unable to maintain glycemic targets on basal insulin in combination with oral medication, intensification with a GLP-1 receptor agonist, SGLT2 inhibitor, or prandial insulin can be considered.
This recommendation is based on “overwhelming evidence that GLP-1 receptor agonists give you HbA1c lowering in the same range as basal insulin but can do so without hypoglycemia and with weight loss, in contrast to weight gain with most insulin preparations,” Dr. Mathieu noted.
The bottom line, however, is that “the patient is at the center of everything and ... should become an integral part of the team treating this patient,” Dr. Mathieu said.
Knowledge gaps
In a review of remaining knowledge gaps regarding glycemic control in T2DM, Dr. Buse said that, while the tools available to treat and prevent diabetes are vastly improved, implementation of effective innovation has lagged behind and “requires fundamental changes in health care policy and societal approaches to wellness.”
Additionally, the management of overweight and obesity is clearly inadequate and requires much greater emphasis on lifestyle techniques, behavioral approaches, medication, and surgery, said Dr. Buse, who is the Verne S. Caviness distinguished professor and chief of the division of endocrinology, as well as director of the Diabetes Center, at the University of North Carolina, Chapel Hill.
These and numerous other knowledge gaps (with respect to preserving and enhancing beta-cell function, incorporating personalized medicine, the value of combinations for additive benefit, the identification of biomarkers, the use of early intensive therapy, metabolic surgery decision making, the value of self-monitoring of blood glucose, and the need for better drugs – including those for the primary prevention of cardiovascular disease) need to be addressed and “require additional investment in basic, translational, clinical, and implementation research,” he said.
“More time- and cost-efficient research paradigms to address patient-centered endpoints are needed through regulatory reform and leveraging informatics and coordinated learning health care systems. Additionally, the increasing burden of cardiometabolic disease is an existential threat to society,” he said, stressing that “urgent attention to improve prevention and treatment is of the essence.”
Consensus statement development
The draft consensus statement is the work of group members selected by the ADA and EASD to ensure regional representation (five each from the United States and Europe). The group had two face-to-face meetings, as well as regular teleconferences; the members also conducted a “robust evidence review, which informed the content,” said group cochair Melanie J. Davies, MD, of the University of Leicester (U.K.).
The group reviewed randomized controlled trials, systematic reviews, and meta-analyses published from Jan. 1, 2014, (to capture research that may have been missed during development of the 2015 statement) through Feb. 28, 2018.
The process was based on consensus among members; areas of disagreement were voted on and the group proceeded according to 60% supermajority votes.
The updates were mainly based on research generated over the past 2 years, Dr. Davies said.
The final draft will be submitted for publication to Diabetes Care and Diabetologia.
Dr. Buse reported relationships (research support, stock ownership, and/or advisory roles) with Adocia, AstraZeneca, Boehringer Ingelheim, Dexcom, Elcelyx Therapeutics, Eli Lilly, Intarcia Therapeutics, Johnson & Johnson, Lexicon Pharmaceuticals, Mellitus Health, Metavention, NovaTarg Therapeutics, Novo Nordisk, PhaseBio Pharmaceuticals, Sanofi, Senseonics, Theracos, and vTv Therapeutics; Dr. Wexler reported having no disclosures; Dr. Rossing reported relationships (consultancy and/or speaking fees, research grants, stock ownership) with AbbVie, Astellas Pharma, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly, MDS Medical, Novo Nordisk, and Sanofi; Dr. Kernan reported having no disclosures; Dr. Mingrone is a consultant for Novo Nordisk, Fractyl, and Johnson & Johnson; Dr. D’Alessio reported advisory board membership with and/or research support from Eli Lilly, Intarcia Therapeutics, Merck, and Novo Nordisk; Dr. Mathieu reported relationships (advisory board membership, speaker’s bureau, and/or research support) with Abbott, AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly, Hanmi Pharmaceuticals, Intrexon, Janssen Pharmaceuticals, MannKind, Medtronic, Merck Sharp & Dohme (MSD), Novartis, Novo Nordisk, Pfizer, Roche Diagnostics, Sanofi, and UCB; Dr. Davies reported relationships (advisory panel, consulting, research support, and/or speaker’s bureau) with AstraZeneca, Boehringer Ingelheim, Eli Lilly and Company, Intarcia Therapeutics, Janssen Pharmaceuticals, MSD, Mitsubishi Tanabi Pharma, Novo Nordisk, Sanofi, and Servier.
ORLANDO – according to a draft consensus report on the management of hyperglycemia in patients with type 2 diabetes mellitus (T2DM).
The report, a project of the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD), is currently under review and will be presented in final form Oct. 5 at the EASD annual meeting in Berlin.
The current draft calls, generally, for the initial use of metformin followed by the addition of antihyperglycemic medications based on patient comorbidities and concerns “as we await answers to the many questions that remain,” John Buse, MD, PhD, cochair of the consensus statement writing group, said during a summary of the draft recommendations at the annual scientific sessions of the ADA.
The first step, however, is to assess key patient characteristics; these can include comorbidities, clinical characteristics, issues such as motivation and depression, and cultural and socio-economic context, Deborah J. Wexler, MD, 1 of 10 writing group members, said during the same presentation.
Patients with ASCVD or heart failure
Given new evidence from trials such as EMPA-REG and LEADER showing outcomes benefits with the use of specific antihyperglycemic medications in patients with established atherosclerotic cardiovascular disease (ASCVD), an important early step in the proposed approach is to consider the presence or absence of ASCVD and heart failure, said Dr. Wexler of Massachusetts General Hospital, Boston.
“The presence of cardiovascular disease is a compelling indication for the selection of certain glucose-lowering drugs,” she said.
The draft consensus recommendation in this regard – a new recommendation since the last consensus report in 2015 – differentiates between T2DM patients in whom ASCVD predominates and those in whom heart failure predominates.
“What’s new since 2015 is that we recommend that these comorbidities be considered first and foremost because they do influence the choice of a particular glucose-lowering medication, and the recommendation is that, among patients with type 2 diabetes with established ASCVD, sodium-glucose cotransporter 2 [SGLT2] inhibitors or glucagonlike peptide 1 [GLP-1] receptor agonists with proven cardiovascular benefit are recommended as part of glycemic management,” she said.
However, it is important to note that ASCVD is defined differently across trials, and patients considered in the development of these recommendations are those with much higher cardiovascular risk than the average patient with T2DM, she added.
“It’s also important to keep in mind that each cardiovascular outcomes trial, while large, is but a single experiment ... and we don’t have the benefit of replication,” she said, noting that it is not always clear whether differences in trial findings within a drug class are related to trial design or true differences in individual medications.
“So we try to read into them and interpret these data, but it’s just important to consider that ... and when evidence suggests a hierarchy, we noted that,” she said.
That said, if ASCVD predominates, the recommendation is for treatment with either a GLP-1 receptor agonist with proven cardiovascular benefit (favoring liraglutide over semaglutide and over long-acting exenatide) or an SGLT2 inhibitor with proven cardiovascular benefit if estimated glomerular filtration (eGFR) is adequate (favoring empagliflozin over canagliflozin).
These recommendations are based on the LEADER trial finding of significant improvement in the primary outcome of cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke with liraglutide vs. placebo (hazard ratio, 0.87; number needed to treat [NNT], 52 over 3.8 years) and on the EMPA-REG trial finding of significant improvement in the same primary outcome with empagliflozin vs. placebo (HR, 0.86; NNT, 62 over 3.1 years).
Keep in mind that there is no evidence of cardiovascular benefit from these treatments in patients at lower risk and also that the “expensive and complicated” combination of an SGLT2 inhibitor and a GLP-1 receptor agonist has not been tested in cardiovascular outcomes trials and there is no evidence of additional benefit from a cardiovascular perspective with this combination, Dr. Wexler said.
If heart failure predominates, the recommendations call for consideration of an SGLT2 inhibitor as part of the treatment strategy because patients with T2DM are at increased risk for heart failure with reduced or preserved ejection fraction and because significant, consistent reduction in hospitalizations for heart failure were seen in SGLT2 inhibitor trials, writing group member Peter Rossing, MD, explained during the session; he noted, however, that the trials were not designed to adjudicate heart failure and that most patients did not have clinical heart failure at baseline.
In those in whom SGLT2 inhibitors are contraindicated – because of impaired renal function, for example – a GLP-1 receptor agonist with proven cardiovascular benefit is recommended.
“Then we suggest that if you are still not at [hemoglobin A1c] target, you should avoid thiazolidinediones [TZD] because of the risk of fluid overload, and you could then consider, if needed, combining an SGLT2-inhibitor and a GLP-1 receptor agonist ... or you could use a [dipeptidyl peptidase–4 (DPP-4) inhibitor] if you are not on an GLP-1 receptor agonist. And we point out that saxagliptin has unfavorable data on heart failure,” Dr. Rossing of Steno Diabetes Center, Copenhagen, said, noting that basal insulin or sulfonylurea are other alternative options.
In EMPA-REG, hospitalization for heart failure was reduced by 35% with empagliflozin vs. placebo (HR, 0.65; NNT, 71 over 3 years), and similar findings were seen in the CANVAS trial. In LEADER, a nonsignificant 13% reduction was seen in hospitalization for heart failure with liraglutide vs. placebo (HR, 0.87). However, this was a secondary outcome; ongoing studies are addressing heart failure as a primary outcome, Dr. Rossing said.
The report also includes a recommendation that, for patients with chronic kidney disease and high cardiovascular risk, GLP-1 receptor agonists and SGLT2 inhibitors can be used but with dose reductions for some medications – several of which have demonstrated renal benefit and cardiovascular benefits in those populations and can be considered as part of treatment.
Lifestyle management and medication
With respect to lifestyle management and pharmacologic treatment, the proposed recommendations, which are based on several large trials, state that an individualized program of medical nutritional therapy should be offered to all patients and that all overweight and obese patients with diabetes should be advised of the health benefits of weight loss. They also should be encouraged to engage in a program of intensive lifestyle management, which may include food substitution, writing group member Walter Kernan, MD, said at the meeting.
In the DiRECT Trial, the average weight loss was about 10 kg in an intervention group that had complete food replacement for 3 months followed by gradual food reintroduction and ongoing counseling versus about 1 kg in controls, and the diabetes remission rate at 1 year was 46% versus 4%, respectively, said Dr. Kernan of Yale University, New Haven, Conn.
In addition, intentional physical activity is known to improve glycemic control and should be encouraged in all patients with T2DM, he said.
“The foundation of hyperglycemia treatment in type 2 diabetes is, for sure, lifestyle modification,” said group member Geltrude Mingrone, MD, of Catholic University of the Sacred Heart in Rome. “Those patients who are very well motivated and adherent to the [recommendations] can achieve very good results,” she added.
In those in whom lifestyle modification fails to lead to adequate improvement, “a pretty large medication portfolio is available,” she said, adding that the choice of treatment should be based on safety, efficacy, cost, and convenience, factors which are described in the statement.
The hope is that the final consensus statement will make it easier to navigate them, she said.
Finally, bariatric surgery can be considered a very effective salvage therapy, Dr. Mingrone said, noting that only lifestyle modification or bariatric surgery will lead to diabetes remission.
The draft consensus recommendation for bariatric surgery is to consider it in patients with T2DM and a body mass index of 40 kg/m2 or greater (37.5 or greater in those of Asian ancestry), regardless of the level of glycemic control, and in those with BMI of 35-39.9 (32.5-37.4 in those of Asian ancestry) when hyperglycemia is inadequately controlled despite lifestyle and optimal medical therapy.
Decision making and injectable therapies
The statement includes decision-making strategies and algorithms for treatment and addresses issues such as choosing antihyperglycemic medications when weight is a concern (consider an SGLT2 inhibitor or a GLP-1 receptor agonist with good efficacy for weight loss to start – or a combination of both if HbA1c is not on target), when minimizing hypoglycemia is the priority (consider adding an SGLT2 inhibitors, GLP-1 receptor agonist, a TZD, or a DPP-4 inhibitor to metformin therapy to start, followed by reintensification of lifestyle modifications and combination therapies if HbA1c is above target), and when drug costs need to be minimized, as well as when and how to initiate injectable therapies, according to writing group members David D’Alessio, MD, of Duke University, Durham, N.C, and Chantal Mathieu, MD, of Katholieke Universteit Leuven (Belgium).
The draft consensus recommendation regarding the latter is that, in patients who need the greater glucose-lowering effect of an injectable medication, GLP-1 receptor agonists should be considered as the first choice and that, when insulin is the medication of choice on the basis of clinical characteristics, basal insulin is preferred. Additionally, in patients who are unable to maintain glycemic targets on basal insulin in combination with oral medication, intensification with a GLP-1 receptor agonist, SGLT2 inhibitor, or prandial insulin can be considered.
This recommendation is based on “overwhelming evidence that GLP-1 receptor agonists give you HbA1c lowering in the same range as basal insulin but can do so without hypoglycemia and with weight loss, in contrast to weight gain with most insulin preparations,” Dr. Mathieu noted.
The bottom line, however, is that “the patient is at the center of everything and ... should become an integral part of the team treating this patient,” Dr. Mathieu said.
Knowledge gaps
In a review of remaining knowledge gaps regarding glycemic control in T2DM, Dr. Buse said that, while the tools available to treat and prevent diabetes are vastly improved, implementation of effective innovation has lagged behind and “requires fundamental changes in health care policy and societal approaches to wellness.”
Additionally, the management of overweight and obesity is clearly inadequate and requires much greater emphasis on lifestyle techniques, behavioral approaches, medication, and surgery, said Dr. Buse, who is the Verne S. Caviness distinguished professor and chief of the division of endocrinology, as well as director of the Diabetes Center, at the University of North Carolina, Chapel Hill.
These and numerous other knowledge gaps (with respect to preserving and enhancing beta-cell function, incorporating personalized medicine, the value of combinations for additive benefit, the identification of biomarkers, the use of early intensive therapy, metabolic surgery decision making, the value of self-monitoring of blood glucose, and the need for better drugs – including those for the primary prevention of cardiovascular disease) need to be addressed and “require additional investment in basic, translational, clinical, and implementation research,” he said.
“More time- and cost-efficient research paradigms to address patient-centered endpoints are needed through regulatory reform and leveraging informatics and coordinated learning health care systems. Additionally, the increasing burden of cardiometabolic disease is an existential threat to society,” he said, stressing that “urgent attention to improve prevention and treatment is of the essence.”
Consensus statement development
The draft consensus statement is the work of group members selected by the ADA and EASD to ensure regional representation (five each from the United States and Europe). The group had two face-to-face meetings, as well as regular teleconferences; the members also conducted a “robust evidence review, which informed the content,” said group cochair Melanie J. Davies, MD, of the University of Leicester (U.K.).
The group reviewed randomized controlled trials, systematic reviews, and meta-analyses published from Jan. 1, 2014, (to capture research that may have been missed during development of the 2015 statement) through Feb. 28, 2018.
The process was based on consensus among members; areas of disagreement were voted on and the group proceeded according to 60% supermajority votes.
The updates were mainly based on research generated over the past 2 years, Dr. Davies said.
The final draft will be submitted for publication to Diabetes Care and Diabetologia.
Dr. Buse reported relationships (research support, stock ownership, and/or advisory roles) with Adocia, AstraZeneca, Boehringer Ingelheim, Dexcom, Elcelyx Therapeutics, Eli Lilly, Intarcia Therapeutics, Johnson & Johnson, Lexicon Pharmaceuticals, Mellitus Health, Metavention, NovaTarg Therapeutics, Novo Nordisk, PhaseBio Pharmaceuticals, Sanofi, Senseonics, Theracos, and vTv Therapeutics; Dr. Wexler reported having no disclosures; Dr. Rossing reported relationships (consultancy and/or speaking fees, research grants, stock ownership) with AbbVie, Astellas Pharma, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly, MDS Medical, Novo Nordisk, and Sanofi; Dr. Kernan reported having no disclosures; Dr. Mingrone is a consultant for Novo Nordisk, Fractyl, and Johnson & Johnson; Dr. D’Alessio reported advisory board membership with and/or research support from Eli Lilly, Intarcia Therapeutics, Merck, and Novo Nordisk; Dr. Mathieu reported relationships (advisory board membership, speaker’s bureau, and/or research support) with Abbott, AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly, Hanmi Pharmaceuticals, Intrexon, Janssen Pharmaceuticals, MannKind, Medtronic, Merck Sharp & Dohme (MSD), Novartis, Novo Nordisk, Pfizer, Roche Diagnostics, Sanofi, and UCB; Dr. Davies reported relationships (advisory panel, consulting, research support, and/or speaker’s bureau) with AstraZeneca, Boehringer Ingelheim, Eli Lilly and Company, Intarcia Therapeutics, Janssen Pharmaceuticals, MSD, Mitsubishi Tanabi Pharma, Novo Nordisk, Sanofi, and Servier.
ORLANDO – according to a draft consensus report on the management of hyperglycemia in patients with type 2 diabetes mellitus (T2DM).
The report, a project of the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD), is currently under review and will be presented in final form Oct. 5 at the EASD annual meeting in Berlin.
The current draft calls, generally, for the initial use of metformin followed by the addition of antihyperglycemic medications based on patient comorbidities and concerns “as we await answers to the many questions that remain,” John Buse, MD, PhD, cochair of the consensus statement writing group, said during a summary of the draft recommendations at the annual scientific sessions of the ADA.
The first step, however, is to assess key patient characteristics; these can include comorbidities, clinical characteristics, issues such as motivation and depression, and cultural and socio-economic context, Deborah J. Wexler, MD, 1 of 10 writing group members, said during the same presentation.
Patients with ASCVD or heart failure
Given new evidence from trials such as EMPA-REG and LEADER showing outcomes benefits with the use of specific antihyperglycemic medications in patients with established atherosclerotic cardiovascular disease (ASCVD), an important early step in the proposed approach is to consider the presence or absence of ASCVD and heart failure, said Dr. Wexler of Massachusetts General Hospital, Boston.
“The presence of cardiovascular disease is a compelling indication for the selection of certain glucose-lowering drugs,” she said.
The draft consensus recommendation in this regard – a new recommendation since the last consensus report in 2015 – differentiates between T2DM patients in whom ASCVD predominates and those in whom heart failure predominates.
“What’s new since 2015 is that we recommend that these comorbidities be considered first and foremost because they do influence the choice of a particular glucose-lowering medication, and the recommendation is that, among patients with type 2 diabetes with established ASCVD, sodium-glucose cotransporter 2 [SGLT2] inhibitors or glucagonlike peptide 1 [GLP-1] receptor agonists with proven cardiovascular benefit are recommended as part of glycemic management,” she said.
However, it is important to note that ASCVD is defined differently across trials, and patients considered in the development of these recommendations are those with much higher cardiovascular risk than the average patient with T2DM, she added.
“It’s also important to keep in mind that each cardiovascular outcomes trial, while large, is but a single experiment ... and we don’t have the benefit of replication,” she said, noting that it is not always clear whether differences in trial findings within a drug class are related to trial design or true differences in individual medications.
“So we try to read into them and interpret these data, but it’s just important to consider that ... and when evidence suggests a hierarchy, we noted that,” she said.
That said, if ASCVD predominates, the recommendation is for treatment with either a GLP-1 receptor agonist with proven cardiovascular benefit (favoring liraglutide over semaglutide and over long-acting exenatide) or an SGLT2 inhibitor with proven cardiovascular benefit if estimated glomerular filtration (eGFR) is adequate (favoring empagliflozin over canagliflozin).
These recommendations are based on the LEADER trial finding of significant improvement in the primary outcome of cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke with liraglutide vs. placebo (hazard ratio, 0.87; number needed to treat [NNT], 52 over 3.8 years) and on the EMPA-REG trial finding of significant improvement in the same primary outcome with empagliflozin vs. placebo (HR, 0.86; NNT, 62 over 3.1 years).
Keep in mind that there is no evidence of cardiovascular benefit from these treatments in patients at lower risk and also that the “expensive and complicated” combination of an SGLT2 inhibitor and a GLP-1 receptor agonist has not been tested in cardiovascular outcomes trials and there is no evidence of additional benefit from a cardiovascular perspective with this combination, Dr. Wexler said.
If heart failure predominates, the recommendations call for consideration of an SGLT2 inhibitor as part of the treatment strategy because patients with T2DM are at increased risk for heart failure with reduced or preserved ejection fraction and because significant, consistent reduction in hospitalizations for heart failure were seen in SGLT2 inhibitor trials, writing group member Peter Rossing, MD, explained during the session; he noted, however, that the trials were not designed to adjudicate heart failure and that most patients did not have clinical heart failure at baseline.
In those in whom SGLT2 inhibitors are contraindicated – because of impaired renal function, for example – a GLP-1 receptor agonist with proven cardiovascular benefit is recommended.
“Then we suggest that if you are still not at [hemoglobin A1c] target, you should avoid thiazolidinediones [TZD] because of the risk of fluid overload, and you could then consider, if needed, combining an SGLT2-inhibitor and a GLP-1 receptor agonist ... or you could use a [dipeptidyl peptidase–4 (DPP-4) inhibitor] if you are not on an GLP-1 receptor agonist. And we point out that saxagliptin has unfavorable data on heart failure,” Dr. Rossing of Steno Diabetes Center, Copenhagen, said, noting that basal insulin or sulfonylurea are other alternative options.
In EMPA-REG, hospitalization for heart failure was reduced by 35% with empagliflozin vs. placebo (HR, 0.65; NNT, 71 over 3 years), and similar findings were seen in the CANVAS trial. In LEADER, a nonsignificant 13% reduction was seen in hospitalization for heart failure with liraglutide vs. placebo (HR, 0.87). However, this was a secondary outcome; ongoing studies are addressing heart failure as a primary outcome, Dr. Rossing said.
The report also includes a recommendation that, for patients with chronic kidney disease and high cardiovascular risk, GLP-1 receptor agonists and SGLT2 inhibitors can be used but with dose reductions for some medications – several of which have demonstrated renal benefit and cardiovascular benefits in those populations and can be considered as part of treatment.
Lifestyle management and medication
With respect to lifestyle management and pharmacologic treatment, the proposed recommendations, which are based on several large trials, state that an individualized program of medical nutritional therapy should be offered to all patients and that all overweight and obese patients with diabetes should be advised of the health benefits of weight loss. They also should be encouraged to engage in a program of intensive lifestyle management, which may include food substitution, writing group member Walter Kernan, MD, said at the meeting.
In the DiRECT Trial, the average weight loss was about 10 kg in an intervention group that had complete food replacement for 3 months followed by gradual food reintroduction and ongoing counseling versus about 1 kg in controls, and the diabetes remission rate at 1 year was 46% versus 4%, respectively, said Dr. Kernan of Yale University, New Haven, Conn.
In addition, intentional physical activity is known to improve glycemic control and should be encouraged in all patients with T2DM, he said.
“The foundation of hyperglycemia treatment in type 2 diabetes is, for sure, lifestyle modification,” said group member Geltrude Mingrone, MD, of Catholic University of the Sacred Heart in Rome. “Those patients who are very well motivated and adherent to the [recommendations] can achieve very good results,” she added.
In those in whom lifestyle modification fails to lead to adequate improvement, “a pretty large medication portfolio is available,” she said, adding that the choice of treatment should be based on safety, efficacy, cost, and convenience, factors which are described in the statement.
The hope is that the final consensus statement will make it easier to navigate them, she said.
Finally, bariatric surgery can be considered a very effective salvage therapy, Dr. Mingrone said, noting that only lifestyle modification or bariatric surgery will lead to diabetes remission.
The draft consensus recommendation for bariatric surgery is to consider it in patients with T2DM and a body mass index of 40 kg/m2 or greater (37.5 or greater in those of Asian ancestry), regardless of the level of glycemic control, and in those with BMI of 35-39.9 (32.5-37.4 in those of Asian ancestry) when hyperglycemia is inadequately controlled despite lifestyle and optimal medical therapy.
Decision making and injectable therapies
The statement includes decision-making strategies and algorithms for treatment and addresses issues such as choosing antihyperglycemic medications when weight is a concern (consider an SGLT2 inhibitor or a GLP-1 receptor agonist with good efficacy for weight loss to start – or a combination of both if HbA1c is not on target), when minimizing hypoglycemia is the priority (consider adding an SGLT2 inhibitors, GLP-1 receptor agonist, a TZD, or a DPP-4 inhibitor to metformin therapy to start, followed by reintensification of lifestyle modifications and combination therapies if HbA1c is above target), and when drug costs need to be minimized, as well as when and how to initiate injectable therapies, according to writing group members David D’Alessio, MD, of Duke University, Durham, N.C, and Chantal Mathieu, MD, of Katholieke Universteit Leuven (Belgium).
The draft consensus recommendation regarding the latter is that, in patients who need the greater glucose-lowering effect of an injectable medication, GLP-1 receptor agonists should be considered as the first choice and that, when insulin is the medication of choice on the basis of clinical characteristics, basal insulin is preferred. Additionally, in patients who are unable to maintain glycemic targets on basal insulin in combination with oral medication, intensification with a GLP-1 receptor agonist, SGLT2 inhibitor, or prandial insulin can be considered.
This recommendation is based on “overwhelming evidence that GLP-1 receptor agonists give you HbA1c lowering in the same range as basal insulin but can do so without hypoglycemia and with weight loss, in contrast to weight gain with most insulin preparations,” Dr. Mathieu noted.
The bottom line, however, is that “the patient is at the center of everything and ... should become an integral part of the team treating this patient,” Dr. Mathieu said.
Knowledge gaps
In a review of remaining knowledge gaps regarding glycemic control in T2DM, Dr. Buse said that, while the tools available to treat and prevent diabetes are vastly improved, implementation of effective innovation has lagged behind and “requires fundamental changes in health care policy and societal approaches to wellness.”
Additionally, the management of overweight and obesity is clearly inadequate and requires much greater emphasis on lifestyle techniques, behavioral approaches, medication, and surgery, said Dr. Buse, who is the Verne S. Caviness distinguished professor and chief of the division of endocrinology, as well as director of the Diabetes Center, at the University of North Carolina, Chapel Hill.
These and numerous other knowledge gaps (with respect to preserving and enhancing beta-cell function, incorporating personalized medicine, the value of combinations for additive benefit, the identification of biomarkers, the use of early intensive therapy, metabolic surgery decision making, the value of self-monitoring of blood glucose, and the need for better drugs – including those for the primary prevention of cardiovascular disease) need to be addressed and “require additional investment in basic, translational, clinical, and implementation research,” he said.
“More time- and cost-efficient research paradigms to address patient-centered endpoints are needed through regulatory reform and leveraging informatics and coordinated learning health care systems. Additionally, the increasing burden of cardiometabolic disease is an existential threat to society,” he said, stressing that “urgent attention to improve prevention and treatment is of the essence.”
Consensus statement development
The draft consensus statement is the work of group members selected by the ADA and EASD to ensure regional representation (five each from the United States and Europe). The group had two face-to-face meetings, as well as regular teleconferences; the members also conducted a “robust evidence review, which informed the content,” said group cochair Melanie J. Davies, MD, of the University of Leicester (U.K.).
The group reviewed randomized controlled trials, systematic reviews, and meta-analyses published from Jan. 1, 2014, (to capture research that may have been missed during development of the 2015 statement) through Feb. 28, 2018.
The process was based on consensus among members; areas of disagreement were voted on and the group proceeded according to 60% supermajority votes.
The updates were mainly based on research generated over the past 2 years, Dr. Davies said.
The final draft will be submitted for publication to Diabetes Care and Diabetologia.
Dr. Buse reported relationships (research support, stock ownership, and/or advisory roles) with Adocia, AstraZeneca, Boehringer Ingelheim, Dexcom, Elcelyx Therapeutics, Eli Lilly, Intarcia Therapeutics, Johnson & Johnson, Lexicon Pharmaceuticals, Mellitus Health, Metavention, NovaTarg Therapeutics, Novo Nordisk, PhaseBio Pharmaceuticals, Sanofi, Senseonics, Theracos, and vTv Therapeutics; Dr. Wexler reported having no disclosures; Dr. Rossing reported relationships (consultancy and/or speaking fees, research grants, stock ownership) with AbbVie, Astellas Pharma, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly, MDS Medical, Novo Nordisk, and Sanofi; Dr. Kernan reported having no disclosures; Dr. Mingrone is a consultant for Novo Nordisk, Fractyl, and Johnson & Johnson; Dr. D’Alessio reported advisory board membership with and/or research support from Eli Lilly, Intarcia Therapeutics, Merck, and Novo Nordisk; Dr. Mathieu reported relationships (advisory board membership, speaker’s bureau, and/or research support) with Abbott, AstraZeneca, Boehringer Ingelheim, Bristol-Myers Squibb, Eli Lilly, Hanmi Pharmaceuticals, Intrexon, Janssen Pharmaceuticals, MannKind, Medtronic, Merck Sharp & Dohme (MSD), Novartis, Novo Nordisk, Pfizer, Roche Diagnostics, Sanofi, and UCB; Dr. Davies reported relationships (advisory panel, consulting, research support, and/or speaker’s bureau) with AstraZeneca, Boehringer Ingelheim, Eli Lilly and Company, Intarcia Therapeutics, Janssen Pharmaceuticals, MSD, Mitsubishi Tanabi Pharma, Novo Nordisk, Sanofi, and Servier.
EXPERT ANALYSIS FROM ADA 2018
