Treatment intensification in patients with inadequate glycemic control on basal insulin: rationale and clinical evidence for the use of short-acting and other glucagon-like peptide-1 receptor agonists

Characteristics of subjects with type 2 diabetes enrolled in randomized controlled trials and non-randomized controlled trials in Japan: A systematic review

AIMS/INTRODUCTION

This study aimed to understand the characteristics of type 2 diabetes subjects enrolled in randomized controlled trials (RCTs) and non-RCTs according to therapeutic regimens through systematic literature review.

MATERIALS AND METHODS

PubMed and the database of the Japanese Medical Abstract Society (ICHUSHI) were searched for studies published from 2010 to 2019 reporting the efficacy and safety of glucose-lowering drugs in Japanese individuals with suboptimally controlled type 2 diabetes, and therapeutic regimens, demographics and clinical characteristics at the baseline were extracted. We evaluated the treatment arms, not the placebo arms.

RESULTS

The literature searches identified 2,656 publications, 145 of which met all eligibility criteria and included 282 eligible arms. In the past 10 years, dipeptidyl peptidase-4 inhibitor was the most frequently studied in both RCTs and non-RCTs. Regarding the characteristics of enrolled subjects, sodium-glucose cotransporter 2 inhibitor and glucagon-like peptide-1 receptor agonist have been studied more in relatively obese subjects, and insulin has been studied in higher proportion of subjects with disease duration ≥10 years. Most of the RCTs included subjects aged 55-64 years, whereas a higher proportion of dipeptidyl peptidase-4 inhibitor and insulin arms in the non-RCTs included those aged ≥65 years. Dipeptidyl peptidase-4 inhibitor and sodium-glucose cotransporter 2 inhibitor were evaluated in subjects with no abnormalities in blood pressure or lipid parameters; however, only a few reports of those parameters have been assessed with glucagon-like peptide-1 receptor agonist and insulin.

CONCLUSIONS

As RCTs and non-RCTs differ in the baseline characteristics of type 2 diabetes subjects, it is necessary to integrate and evaluate both to understand the actual treatment status of type 2 diabetes.

Real-life effects of adding weekly subcutaneous semaglutide to insulin for the treatment of type 2 diabetes mellitus

OBJECTIVES

This work aims to determine the real-life anthropometric and analytical benefits of adding subcutaneous semaglutide to previous insulin treatment in patients with type 2 diabetes.

METHODS

This is a descriptive, retrospective, open-label study describing the clinical and anthropometric characteristics of 117 patients diagnosed with type 2 diabetes followed-up on in the Endocrinology and Nutrition outpatient clinic of the Hospital Universitario Central de Asturias for 53 weeks after starting treatment with subcutaneous semaglutide (October-December 2019). All patients were on previous insulin treatment with or without oral antidiabetics.

RESULTS

Of the 117 initial patients, 17 did not complete the study due to adverse effects (nausea, vomiting), the physician's decision, or loss to follow-up. Twelve months (week 53) after starting semaglutide, there was a decrease in HbA1c of 0.74% (95% CI 0.59-1.14, p < 0.05) as well as 3.61 kg of weight loss (95% CI 2.30-4.92, p < 0.05) and a decline in total insulin of 15.88 IU (95% CI 10.98-20.74, p < 0.05) from baseline figures. In patients without prior GLP-1 receptor analogs (GLP-1ra), the effect in terms of a reduction in HbA1c, weight, and the total insulin dose was statistically significant. However, in patients pre-treated with GLP-1ra only had improvements in terms of weight loss. No serious adverse events were observed.

CONCLUSIONS

The addition of subcutaneous semaglutide to prior insulin treatment with or without oral antidiabetics safely led to a decrease in HbA1c, weight, and the insulin dose. This effect is greater in GLP-1ra naive patients.

IDegLira for the Real-World Treatment of Type 2 Diabetes in Italy: Protocol and Interim Results from the REX Observational Study

INTRODUCTION

IDegLira was shown to maintain glycemic control while reducing risk of hypoglycemia and body weight gain. The REX study was designed to generate real-world evidence on the use of IDegLira in Italian clinical practice in two different subgroups of patients, those switching to IDegLira from a basal insulin-supported oral therapy (BOT group) and those from a basal plus bolus insulin regimen (BB group).

METHODS

Adult patients with T2D diagnosed for at least 12 months and having started IDegLira 2-3 months prior to enrolment, coming from a BOT or BB regimen, were enrolled in this multicenter observational prospective cohort study conducted in 28 Italian centers. This paper presents the methodological framework of the REX study and provides the interim analysis results describing the patients' baseline characteristics and the clinical reasons for IDegLira treatment initiation.

RESULTS

Of the 360 patients enrolled in the REX study, 331 were considered eligible for this interim analysis, 76.4% in the BOT and 23.6% in the BB group. Mean (SD) HbA1c was 8.5% (1.4) in the BOT and 8.2% (1.7) in the BB group. The most common T2D complications were diabetic macroangiopathy and diabetic nephropathy in both groups. The median (interquartile range) insulin daily dose before IDegLira was 15.0 (10.0-20.0) units in the BOT group and 42 (30.0-52.0) in the BB group. Oral antidiabetics were taken by 98% and 51.3% of patients, respectively. The main reason for switching to IDegLira was the inadequate glycemic control in the BOT group (86% of patients), and the intent to simplify the treatment in the BB group (66.7%).

CONCLUSIONS

IdegLira is initiated after BOT in inadequately controlled patients to improve glycemic control, whereas in BB patients it is used to simplify the therapeutic regimen. Final results of the REX study will shed light on patients' outcomes after IdegLira treatment under routine clinical care.

Cardiovascular risk management in type 2 diabetes mellitus: A joint position paper of the Italian Cardiology (SIC) and Italian Diabetes (SID) Societies

AIM

This review represents a joint effort of the Italian Societies of Cardiology (SIC) and Diabetes (SID) to define the state of the art in a field of great clinical and scientific interest which is experiencing a moment of major cultural advancements, the cardiovascular risk management in type 2 diabetes mellitus.

DATA SYNTHESIS

Consists of six chapters that examine various aspects of pathophysiology, diagnosis and therapy which in recent months have seen numerous scientific innovations and several clinical studies that require extensive sharing.

CONCLUSIONS

The continuous evolution of our knowledge in this field confirms the great cultural vitality of these two cultural spheres, which requires, under the leadership of the scientific Societies, an ever greater and effective collaboration.

Once-Daily Oral Semaglutide Versus Injectable GLP-1 RAs in People with Type 2 Diabetes Inadequately Controlled on Basal Insulin: Systematic Review and Network Meta-analysis

INTRODUCTION

The relative efficacy and safety of once-daily oral semaglutide vs. injectable glucagon-like peptide-1 receptor agonists (GLP-1 RAs) in subjects with type 2 diabetes (T2D) inadequately controlled on basal insulin were assessed using network meta-analysis (NMA).

METHODS

A systematic literature review (SLR) was performed to identify randomised controlled trials of GLP-1 RAs in this population. Data at 26 ± 4 weeks were extracted for efficacy and safety outcomes feasible for the NMA: change from baseline in glycated haemoglobin (HbA_1c), weight and blood pressure; HbA_1c target levels (< 7.0% and ≤ 6.5%); composite endpoint; incidence of nausea, vomiting or diarrhoea. Comparators of interest were all licensed doses of dulaglutide, exenatide, liraglutide, lixisenatide and once-weekly injectable semaglutide.

RESULTS

The NMA included seven trials. Once-daily oral semaglutide 14 mg was associated with significantly greater HbA_1c reductions vs. most comparators (treatment differences: - 0.42 to - 1.32%); differences vs. once-weekly injectable semaglutide (0.5 mg and 1 mg doses) were not statistically significant. Once-daily oral semaglutide 14 mg was associated with significantly greater weight reductions vs. exenatide 2 mg and lixisenatide 20 μg (- 2.21 and - 2.39 kg respectively); non-statistically significant weight reductions in favour of once-daily oral semaglutide 14 mg were observed vs. all other comparators except once-weekly injectable semaglutide 1 mg. Similar trends were observed for the proportion of subjects achieving HbA_1c < 7.0% and ≤ 6.5% and the composite endpoint. Once-daily oral semaglutide 14 mg was associated with similar odds of experiencing nausea, vomiting or diarrhoea vs. all comparators.

CONCLUSION

Once-daily oral semaglutide 14 mg, as an add-on to basal insulin, is an efficacious treatment for reducing HbA_1c and weight and meeting glycaemic targets at 26 ± 4 weeks. Once-daily oral semaglutide 14 mg also offers the option of an oral treatment with similar or better efficacy and similar tolerability vs. most injectable GLP-1 RAs.

Efficacy and safety of GLP-1 receptor agonists as add-on to SGLT2 inhibitors in type 2 diabetes mellitus: A meta-analysis

GLP-1 receptor agonists (GLP-1RA) and SGLT2 inhibitors (SGLT2i) have been associated with improved glycemic control, body weight loss and favorable changes in cardiovascular risk factors and outcomes. We conducted a systematic review and meta-analysis to evaluate the effects of the addition of GLP-1RA to SGLT2i in patients with type 2 diabetes mellitus and inadequate glycemic control. Six databases were searched until March 2019. Randomized controlled trials (RCT) with a follow-up of at least 24 weeks reporting on HbA1c, body weight, systolic blood pressure, lipids, achievement of HbA1c < 7%, requirement of rescue therapy due to hyperglycemia and hypoglycemic events were selected. Four RCTs were included. Compared to SGLT2i, the GLP-1RA/SGLT2i combination was associated with greater reduction in HbA1c (-0.74%), body weight (-1.61 kg), and systolic blood pressure (-3.32 mmHg). A higher number of patients achieved HbA1c < 7% (RR = 2.15), with a lower requirement of rescue therapy (RR = 0.37) and similar incidence of hypoglycemia. Reductions in total and LDL cholesterol were found. The present review supports treatment intensification with GLP-1RA in uncontrolled type 2 diabetes on SGLT2i. This drug regimen could provide improved HbA1c control, together with enhanced weight loss and blood pressure and lipids control.

Effect of V-Go Versus Multiple Daily Injections on Glycemic Control, Insulin Use, and Diabetes Medication Costs Among Individuals with Type 2 Diabetes Mellitus

BACKGROUND

Coping with discomfort and the uncertainties of daily adjustments are prominent challenges confronting individuals with type 2 diabetes mellitus (T2DM) who require multiple daily injections (MDI) of insulin. For this growing population, wearable, disposable devices capable of delivering consistent and sustained doses of basal-bolus therapy may help to alleviate concerns and improve outcomes. However, studies on the comparative effectiveness of new, innovative delivery systems versus MDI on insulin requirements, glycemic control, and health care costs are sparse.

OBJECTIVE

To examine glycemic control, insulin use, and diabetes medication costs for users of the V-Go Wearable Insulin Delivery device compared with MDI insulin therapy among individuals with T2DM in a commercially insured population in the United States.

METHODS

This retrospective cohort study queried administrative claims data from the HealthCore Integrated Research Database from July 1, 2011, through July 31, 2017. Cohorts included individuals with T2DM aged 21-80 years either newly initiating V-Go or using MDI for basal/bolus insulin. The date of earliest claim for V-Go prescription fill or for bolus insulin was defined as the index date, depending on the cohort. Previous insulin therapy was required in both cohorts. Baseline hemoglobin A1c (A1c) values were identified during the 6 months before and 15 days after the index date; results closest to 12 months after the index date were selected as follow-up. Insulin use and diabetes medication cost data were examined during the 6 months baseline and the second half of the 1-year follow-up. V-Go and MDI users were 1:1 matched on baseline insulin exposure, A1c level, and other characteristics of interest. Univariate and multivariate tests were used to compare follow-up outcomes.

RESULTS

Matched cohorts included 118 well-balanced pairs (mean age: 56 years; mean baseline A1c: 9.2%). During follow-up, both cohorts experienced improvements in glycemic control relative to baseline (% with A1c ≤ 9%, baseline/follow-up: V-Go 49/69, P < 0.001; MDI 50/60, P = 0.046). With similar baseline insulin prescription fills and diabetes medication costs, V-Go users required fewer insulin prescription fills (mean change: -0.8 vs. +1.8 fills, P < 0.001; -17% vs. +38%); had a smaller increase in diabetes medication costs (mean change in 2016 USD: $341 vs. $1,628, P = 0.012; +10% vs. +47%); and a decrease in insulin total daily dose (mean change in insulin units per day: -29.2 vs. +5.8, P < 0.001; -21% vs. +4%), compared with MDI users, during the last 6 months of follow-up.

CONCLUSIONS

This study was the first to evaluate clinical and economic outcomes associated with the use of V-Go for up to a 1-year follow-up period. Relative to MDI users, V-Go users had similar glycemic control but lower insulin use and lower diabetes medication costs during follow-up. V-Go therapy may provide an opportunity to improve quality measures more cost-effectively in people with T2DM who require basal-bolus therapy.

DISCLOSURES

This study was funded by Valeritas. Nguyen is an employee of Valeritas. Zhou, Grabner, Barron, and Quimbo are employees of HealthCore, which received funding for this study from Valeritas. Raval was an employee of HealthCore at the time the study was conducted. Partial findings from this study were presented at the International Society of Pharmacoeconomics and Outcomes Research 23rd Annual International Meeting; May 19-23, 2018; Baltimore, MD; and the 54th European Association for the Study of Diabetes Annual Meeting; October 1-5, 2018; Berlin, Germany.

The good companions: insulin and glucagon-like peptide-1 receptor agonist in type 2 diabetes. A systematic review and meta-analysis of randomized controlled trials

We provided an updated systematic review with meta-analysis of randomized controlled trials (RCTs) assessing the metabolic effects of combination therapy of insulin and GLP-1RA (combo) in comparison with other injectable therapy. We searched PubMed, Cochrane Register of Controlled Trials, Scholar, and ClinicalTrials.gov for RCTs evaluating changes in HbA1c (primary outcome), proportion of patients at HbA1c target <7%, hypoglycaemia, and weight change (secondary end-points). We included 36 RCTs involving 14,636 patients. Compared with comparator therapies (overall analysis), the combo led to a significant HbA1c reduction (=-0.49%, 95% CI -0.61 to -0.38%, P < 0.001), more patients at HbA1c target [relative risk, (RR) = 1.77, 95% CI, 1.56, 2.01, P < 0.001], similar hypoglycaemic events (RR = 1.03, 95% CI, 0.88, 1.19, P = 0.728), and reduction in body weight (-2.5 Kg, 95% CI -3.1 to -1.8 kg, P < 0.001), with high heterogeneity in each analysis. The quality of the evidence was low for three of the considered outcomes. Compared with intensified insulin regimens (basal-plus/basal-bolus) the combo produced similar glycemic control with reduction of both hypoglycaemia, and body weight. Combination therapy of GLP-1RA and insulin could represent a valuable treatment strategy to improve glycemic control in the management of type 2 diabetes.

Effect of V-Go Versus Multiple Daily Injections on Glycemic Control, Insulin Use, and Diabetes Medication Costs Among Individuals with Type 2 Diabetes Mellitus

BACKGROUND

Coping with discomfort and the uncertainties of daily adjustments are prominent challenges confronting individuals with type 2 diabetes mellitus (T2DM) who require multiple daily injections (MDI) of insulin. For this growing population, wearable, disposable devices capable of delivering consistent and sustained doses of basal-bolus therapy may help to alleviate concerns and improve outcomes. However, studies on the comparative effectiveness of new, innovative delivery systems versus MDI on insulin requirements, glycemic control, and health care costs are sparse.

OBJECTIVE

To examine glycemic control, insulin use, and diabetes medication costs for users of the V-Go Wearable Insulin Delivery device compared with MDI insulin therapy among individuals with T2DM in a commercially insured population in the United States.

METHODS

This retrospective cohort study queried administrative claims data from the HealthCore Integrated Research Database from July 1, 2011, through July 31, 2017. Cohorts included individuals with T2DM aged 21-80 years either newly initiating V-Go or using MDI for basal/bolus insulin. The date of earliest claim for V-Go prescription fill or for bolus insulin was defined as the index date, depending on the cohort. Previous insulin therapy was required in both cohorts. Baseline hemoglobin A1c (A1c) values were identified during the 6 months before and 15 days after the index date; results closest to 12 months after the index date were selected as follow-up. Insulin use and diabetes medication cost data were examined during the 6 months baseline and the second half of the 1-year follow-up. V-Go and MDI users were 1:1 matched on baseline insulin exposure, A1c level, and other characteristics of interest. Univariate and multivariate tests were used to compare follow-up outcomes.

RESULTS

Matched cohorts included 118 well-balanced pairs (mean age: 56 years; mean baseline A1c: 9.2%). During follow-up, both cohorts experienced improvements in glycemic control relative to baseline (% with A1c ≤ 9%, baseline/follow-up: V-Go 49/69, P < 0.001; MDI 50/60, P = 0.046). With similar baseline insulin prescription fills and diabetes medication costs, V-Go users required fewer insulin prescription fills (mean change: -0.8 vs. +1.8 fills, P < 0.001; -17% vs. +38%); had a smaller increase in diabetes medication costs (mean change in 2016 USD: $341 vs. $1,628, P = 0.012; +10% vs. +47%); and a decrease in insulin total daily dose (mean change in insulin units per day: -29.2 vs. +5.8, P < 0.001; -21% vs. +4%), compared with MDI users, during the last 6 months of follow-up.

CONCLUSIONS

This study was the first to evaluate clinical and economic outcomes associated with the use of V-Go for up to a 1-year follow-up period. Relative to MDI users, V-Go users had similar glycemic control but lower insulin use and lower diabetes medication costs during follow-up. V-Go therapy may provide an opportunity to improve quality measures more cost-effectively in people with T2DM who require basal-bolus therapy.

DISCLOSURES

This study was funded by Valeritas. Nguyen is an employee of Valeritas. Zhou, Grabner, Barron, and Quimbo are employees of HealthCore, which received funding for this study from Valeritas. Raval was an employee of HealthCore at the time the study was conducted. Partial findings from this study were presented at the International Society of Pharmacoeconomics and Outcomes Research 23rd Annual International Meeting; May 19-23, 2018; Baltimore, MD; and the 54th European Association for the Study of Diabetes Annual Meeting; October 1-5, 2018; Berlin, Germany.

Efficacy of Real-Time Continuous Glucose Monitoring to Improve Effects of a Prescriptive Lifestyle Intervention in Type 2 Diabetes: A Pilot Study

INTRODUCTION

Optimising patient adherence to prescribed lifestyle interventions to achieve improved blood glucose control remains a challenge. Combined use of real-time continuous glucose monitoring systems (RT-CGM) may promote improved glycaemic control. This pilot study examines the effects of a prescriptive lifestyle modification programme when combined with RT-CGM on blood glucose control and cardiovascular disease risk markers.

METHODS

Twenty adults (10 men, 10 women) with obesity and type-2 diabetes (T2D) (age 60.55 ± 8.38 years, BMI 34.22 ± 4.67 kg/m²) were randomised to a prescriptive low-carbohydrate diet and lifestyle plan whilst continuously wearing either an RT-CGM or an 'offline-blinded' monitor (control) for 12 weeks. Outcomes were glycaemic control (HbA1c, fasting glucose, glycaemic variability [GV]), diabetes medication (MeS), weight, blood pressure and lipids assessed pre- and post-intervention.

RESULTS

Both groups experienced reductions in body weight (RT-CGM - 7.4 ± 4.5 kg vs. control - 5.5 ± 4.0 kg), HbA1c (- 0.67 ± 0.82% vs. - 0.68 ± 0.74%), fasting blood glucose (- 1.2 ± 1.9 mmol/L vs. - 1.0 ± 2.2 mmol/L), LDL-C (- 0.07 ± 0.34 mmol/L vs. - 0.26 ± 0.42 mmol/L) and triglycerides (- 0.32 ± 0.46 mmol/L vs. - 0.36 ± 0.53 mmol/L); with no differential effect between groups (P ≥ 0.10). At week 12, GV indices were consistently lower by at least sixfold in RT-CGM compared to control (CONGA-1 - 0.27 ± 0.36 mmol/L vs. 0.06 ± 0.19 mmol/L; CONGA-2 - 0.36 ± 0.54 mmol/L vs. 0.05 ± 2.88 mmol/L; CONGA-4 - 0.44 ± 0.67 mmol/L vs. - 0.02 ± 0.42 mmol/L; CONGA-8 - 0.36 ± 0.61 vs. 0.02 ± 0.52 mmol/L; MAGE - 0.69 ± 1.14 vs. - 0.09 ± 0.08 mmol/L, although there was insufficient power to achieve statistical significance (P ≥ 0.11). Overall, there was an approximately 40% greater reduction in blood glucose-lowering medication (MeS) in RT-CGM (- 0.30 ± 0.59) compared to control (0.02 ± 0.23).

CONCLUSION

This study provides preliminary evidence that RT-CGM may be an effective strategy to optimise glucose control whilst following a low-carbohydrate lifestyle programme that targets improved glycaemic control, with minimal professional support.

TRIAL REGISTRATION

Australian New Zealand Clinical Trials Registry identifier, ANZTR: 372898.

FUNDING

Grant funding was received for the delivery of the clinical trial only, by the Diabetes Australia Research Trust (DART).

Impact of lixisenatide dose range on clinical outcomes with fixed-ratio combination iGlarLixi in patients with type 2 diabetes

OBJECTIVE

To evaluate the lixisenatide dose range delivered by the iGlarLixi SoloSTAR pen (5-20 µg), alone or in fixed-ratio combination with insulin glargine (iGlar; iGlarLixi).

METHODS

Data from three clinical studies were analyzed to assess lixisenatide efficacy and safety: a phase 2a trial assessing gastric emptying effects (ACT6011); a phase 2b dose-ranging trial (DRI6012); and a randomized controlled phase 3 trial comparing iGlarLixi with its components of iGlar and lixisenatide (LixiLan-O). Efficacy metrics included glycated hemoglobin A_1c (A1C), post-prandial glucose (PPG) values following a standardized breakfast, fasting plasma glucose (FPG), and weight change. Occurrence of gastrointestinal adverse events was also assessed.

RESULTS

ACT6011: lixisenatide doses from 5-20 μg once daily (QD) suppressed PPG; maximal reductions in mean PPG area under the curve were achieved with doses ≥12.5 µg QD, but doses as low as 5 μg achieved 44% of maximal reduction. DRI6012: lixisenatide doses 5-20 μg QD resulted in significant, dose-dependent decreases in A1C, percentage of patients achieving A1C <7.0%, and 2-h PPG levels; doses of 20 μg achieved complete suppression of PPG. LixiLan-O: iGlarLixi decreased 2-h PPG across the entire dose range. Lixisenatide dose was unrelated to reductions in FPG with iGlarLixi. Similar reductions in A1C were seen with iGlarLixi across all lixisenatide doses.

CONCLUSIONS

This analysis demonstrates the clinical benefit of lixisenatide alone or in the formulation of iGlarLixi over the entire dose range of lixisenatide contained in iGlarLixi (5-20 µg), supporting the selection of the lixisenatide dose range delivered by the iGlarLixi SoloSTAR pen.

GLP-1 receptor agonist added to insulin versus basal-plus or basal-bolus insulin therapy in type 2 diabetes: A systematic review and meta-analysis

BACKGROUND

Current guidelines recommend that antihyperglycaemic treatment in patients with type 2 diabetes not achieving the HbA_1c target on basal insulin should be intensified with a glucagon-like peptide-1 receptor agonist (GLP-1RA) or basal-plus/basal-bolus (BP/BB) insulin regimen. We conducted a systematic review and meta-analysis to compare the effects of GLP-1RA/insulin combinations versus BP/BB.

METHODS

The review was registered on PROSPERO (CRD42017079547). PubMed, Scopus, CENTRAL, and ClinicalTrials.gov were searched until July 2018. All randomized controlled trials (RCTs) reporting HbA_1c , body weight, daily insulin dose, hypoglycaemic events, and discontinuation due to lack of efficacy were included. A subgroup analysis on different combinations of GLP-1RA and insulin was performed.

RESULTS

Out of 1885 retrieved papers, 13 RCTs were included in the review. Compared with BP/BB, GLP-1RA/insulin combinations were associated with a similar HbA_1c reduction (Δ = -0.06%; 95% confidence interval [CI], -0.14 to 0.02; P = 0.13; I²  = 52%), greater weight loss (Δ = -3.72 kg; 95% CI, -4.49 to -2.95; P < 0.001; I²  = 89%), and lower incidence of hypoglycaemic events (relative risk [RR] = 0.46; 95% CI, 0.38-0.55; P < 0.001; I²  = 99%). The daily insulin dosage among GLP-1RA/insulin users was 30.3 IU/day (95% CI, -41.2 to -19.3; P < 0.001; I²  = 94%), lower than with BP/BB. No difference was found for discontinuation due to lack of efficacy.

CONCLUSIONS

The present review supports treatment intensification with GLP-1RA added to insulin versus BP/BB in uncontrolled type 2 diabetes. This could provide similar antihyperglycaemic efficacy while leading to weight loss and sparing of hypoglycaemia and insulin dose. As a consequence, a considerable number of patients with type 2 diabetes could be potentially shifted from BP/BB to GLP-1RA/insulin combinations.

Approaches to rapid acting insulin intensification in patients with type 2 diabetes mellitus not achieving glycemic targets

Type 2 diabetes mellitus (T2DM) is a growing problem in the USA, affecting 30.3 million Americans, or 9.4% of the US population. Given that T2DM is a progressive disease, intensification of rapid acting insulin (RAI) to address hyperglycaemia is often required. The American Diabetes Association and the European Association for the Study of Diabetes recommend individualizing the treatment approach to glucose control, considering factors such as age, health behaviours, comorbidities and life expectancy. There are several validated treatment algorithms in the literature, which can be helpful for providing guidance on initiation of RAI while simultaneously considering patient preferences and clinical needs during treatment intensification. This paper provides expert recommendations on prandial insulin regimens and how to use treatment algorithms to promote better glucose control through best practice guidelines. To help patients reach HbA1c targets through treatment intensification, the FullSTEP, SimpleSTEP, ExtraSTEP and AUTONOMY algorithms are discussed in this paper. KEY MESSAGES Clinical inertia should be prevented with timely intensification of therapy when HbA1c levels are greater than 7% (or rising above a patient's individual target) according to national guidelines. Increased personalization in the intensification of T2D treatment is necessary to improve HbA1c targets while addressing risk of hypoglycaemia, concern about weight gain, and overall health goals. Healthcare providers are encouraged to address glycaemic control with a variety of strategies, including prandial insulin, while developing evidence-based treatment plans on the basis of algorithms discussed in the literature.

A Systematic Literature Review and Network Meta-Analysis Comparing Once-Weekly Semaglutide with Other GLP-1 Receptor Agonists in Patients with Type 2 Diabetes Previously Receiving Basal Insulin

INTRODUCTION

Once-weekly semaglutide is a glucagon-like peptide-1 (GLP-1) analogue that is currently available as 1.0 mg and 0.5 mg dose for the treatment of type 2 diabetes (T2D). Currently, no head-to-head trial investigating once-weekly semaglutide as an add-on to basal insulin vs other GLP-1 receptor agonists (GLP-1 RAs) is available. The aim of this study was to conduct a network meta-analysis (NMA) to assess the efficacy and safety of once-weekly semaglutide vs other GLP-1 RAs in patients with T2D inadequately controlled on basal insulin.

METHODS

A systematic literature review was performed to identify all trials of GLP-1 RAs as an add-on to basal insulin in patients with T2D. Data at 24 ± 4 weeks were extracted for efficacy and safety outcomes (feasible for analysis in an NMA), including the change from baseline in glycated hemoglobin (HbA1c), body weight, and systolic blood pressure, and the incidence of nausea, vomiting, and diarrhea. Data were synthesized using a NMA and a Bayesian framework.

RESULTS

In total, eight studies were included across the base-case analyses. The results demonstrate that once-weekly semaglutide 1.0 mg was associated with significantly greater reductions in HbA1c (- 0.88% to - 1.39% vs comparators) and weight (- 1.49 to - 4.69 kg vs comparators) and similar odds of experiencing nausea, vomiting, or diarrhea vs all GLP-1 RA comparators. Once-weekly semaglutide 1.0 mg was also equally effective at reducing systolic blood pressure compared with liraglutide 1.8 mg. Once-weekly semaglutide 0.5 mg significantly reduced HbA1c vs the majority of other GLP-1 RAs, except liraglutide 1.8 mg QD. The odds of experiencing nausea were significantly lower with once-weekly semaglutide 0.5 mg compared with all GLP-1 RA comparators.

CONCLUSION

Once-weekly semaglutide 1.0 mg as an add-on to basal insulin is likely to be the most efficacious GLP-1 RA for reducing HbA1c and weight from baseline after 6 months of treatment. The efficacy of once-weekly semaglutide is not associated with a significant increase in the incidence of gastrointestinal side-effects vs other GLP-1 RAs.

FUNDING

Novo Nordisk.

Adding prandial GLP-1 receptor agonists to basal insulin: a promising option for type 2 diabetes therapy

BACKGROUND

Diabetes mellitus is a serious and increasingly prevalent condition in Canada and around the world. Treatment strategies have become increasingly complex, with a widening array of pharmacological agents available for glycemic management in type 2 diabetes mellitus (T2DM). New therapies that act in concert with available basal insulins may represent alternatives to basal insulin intensification with prandial or pre-mixed insulin. Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have recently shown promise as useful additions to basal insulin, with significant reductions in glycated hemoglobin and potentially beneficial effects on body weight. This review will focus on pivotal clinical trials to assess the potential benefits of adding prandial GLP-1 RAs to basal insulin in patients with T2DM.

METHODS

Clinical studies combining prandial GLP-1 RAs and basal insulin (published between 2011 and July 2017) were identified and reviewed in PubMed, the Cochrane Central Register of Clinical Trials (Issue 6, June 2017), and clinicaltrials.gov.

RESULTS

Most of the studies presented in this review show that the addition of a prandial GLP-1 RA to basal insulin results in equal or slightly superior efficacy compared to the addition of prandial insulin, together with weight loss and less hypoglycemia.

CONCLUSIONS

The results of the studies suggest that a prandial GLP-1 RA as an add-on to basal insulin may be a safe and effective treatment intensification option (vs basal-plus or basal-bolus insulin).

Evidence-based recommendations for insulin intensification strategies after basal insulin in type 2 diabetes

Over the time due to progressive nature of diabetes, proactive intensification of the existing insulin therapy becomes imminent as it minimizes patients' exposure to chronic hypo/hyperglycaemia and reduces weight gain while achieving individualized glycaemic targets. This review focuses on the strength of evidence behind various options for intensification, primarily the insulins as also the GLP-1 analogues. The recommendations presented here are meant to serve as a guide for the physician managing type 2 diabetes patients requiring insulin intensification upon failing of basal insulin therapy.

Treatment intensification in patients with inadequate glycemic control on basal insulin: rationale and clinical evidence for the use of short-acting and other glucagon-like peptide-1 receptor agonists

A substantial proportion of patients with type 2 diabetes mellitus do not reach glycemic targets, despite treatment with oral anti-diabetic drugs and basal insulin therapy. Several options exist for treatment intensification beyond basal insulin, and the treatment paradigm is complex. In this review, the options for treatment intensification will be explored, focusing on drug classes that act via the incretin system and paying particular attention to the short-acting glucagon-like peptide-1 receptor agonists exenatide and lixisenatide. Current treatment guidelines will be summarized and discussed. © 2016 The Authors. Diabetes/Metabolism Research and Reviews Published by John Wiley & Sons Ltd.