Efficacy and Safety of Switching from Insulin Glargine 100 U/mL to the Same Dose of Glargine 300 U/mL in Japanese Type 1 and 2 Diabetes Patients: A Retrospective Analysis

Effect of switching from twice-daily basal insulin to once-daily insulin glargine 300 U/mL (Gla-300) in Brazilian people with type 1 diabetes

BACKGROUND

Low adherence to the number of insulin injections and glycemic variability are among the challenges of insulin therapy in type 1 diabetes (T1D). The TOP1 study investigated the effect of switching from twice-daily (BID) basal insulin to once daily (OD) insulin glargine 300 U/mL (Gla-300) on glycemic control and quality of life.

METHODS

In this 28-week, phase 4 trial, people with T1D aged ≥ 18 years, who were treated with BID basal insulin in combination with prandial rapid-acting insulin for at least 1 year, and had HbA1c between 7.5% and 10.0%, were switched to Gla-300 OD as basal insulin. The present study aimed to evaluate the impact of this change on HbA1c, glycemic profile, treatment satisfaction and safety. The change in HbA1c from baseline to Week 24 was the primary endpoint.

RESULTS

One hundred and twenty-three people with T1D (mean age 37 ± 11 years; 54.5% female) were studied. The disease duration was 20.0 ± 9.8 years, baseline HbA1c and fasting plasma glucose (FPG) were 8.6 ± 0.7% and 201 ± 80.3 mg/dL, respectively. After switching from BID to OD insulin regimen, no significant change in HbA1c was observed from baseline to Week 24 (p = 0.873). There were significant reductions in fasting self-monitoring blood glucose (SMBG) from baseline to Week 24 (175 ± 42 vs. 156 ± 38 mg/dL; p < 0.0001), and in glycemic profile (8-point SMBG) at several time points. There was a significant decrease in the proportion of patients with at least one hypoglycemic event (p = 0.025), in numbers of hypoglycemic events per patient-years of any type (p = 0.036), symptomatic (p = 0.007), and confirmed ≤ 70 mg/dL events (p = 0.049) from run-in to the last 4 weeks on treatment. There were significant improvements in treatment satisfaction (p < 0.0001), perceived hyperglycemia (p < 0.0001) scores and satisfaction with the number of injections between post-run-in and Week 24, and a significant decrease in fear of hypoglycemia.

CONCLUSIONS

Switch from BID basal insulin to OD Gla-300 as part of basal bolus therapy in T1D resulted in similar glycemic control as measured by HbA1c, but provided significant improvements in SMBG, daily glucose profile, a lower incidence of hypoglycemia and increased patient satisfaction.

TRIAL REGISTRATION

NCT03406000.

Twenty Years of Insulin Gla-100: A Systematic Evaluation of Its Efficacy and Safety in Type 2 Diabetes Mellitus

INTRODUCTION

This systematic review aims to present the current evidence base with respect to the initiation and intensification of insulin therapy with glargine 100 U/mL (Gla-100) compared to other insulins in people with type 2 diabetes mellitus (T2DM).

METHODS

A systematic literature search of PubMed (MEDLINE), EMBASE, and the Cochrane Central Register of controlled clinical trials databases was performed to identify studies published up to September 30, 2020 that compared the effects of Gla-100 to that of other insulin regimens in people with T2DM. Relevant information pertaining to the predefined outcomes of interest was extracted. Glycated hemoglobin (HbA1c) change and response rates along with overall hypoglycemia incidence were the primary efficacy and safety outcomes of interest.

RESULTS

Seventy-nine studies (63 interventional and 16 non-interventional) in which Gla-100 was either initiated in previously insulin-naïve patients (n = 57) or used in an intensified regimen (n = 22) were identified and evaluated. In insulin-naïve patients, most studies demonstrated that Gla-100 was significantly better compared with premixed insulins and similar compared with neutral protamine Hagedorn (NPH) insulin, second-generation basal insulins, co-formulations, and other first-generation basal insulins in terms of the primary efficacy parameters. Overall hypoglycemia risk with Gla-100 was significantly lower compared with NPH, premixed, coformulation, and other first-generation basal insulins and significantly higher compared with second-generation basal insulins. In studies with intensified regimens, efficacy outcomes with Gla-100 were significantly better compared with insulin detemir (IDet); similar compared with NPH, second-generation basal insulins, co-formulations; and with premixed insulins. In these studies, overall hypoglycemia risk with Gla-100 was significantly lower compared with IDet and comparable to NPH, premixed insulins, co-formulations, and second-generation basal insulins. In addition, most intensification studies also revealed a significantly lower risk of nocturnal hypoglycemia with Gla-100-based regimens versus NPH and premixed insulins and a significantly greater risk compared to second-generation basal insulins.

CONCLUSIONS

The evidence presented in this review suggests that Gla-100 is an effective option for both insulin initiation and intensification strategies used in the management of T2DM.

Glargine-300: An updated literature review on randomized controlled trials and real-world studies

Despite the availability of a variety of insulins, rates of insulinisation and the acceptance of insulin therapy is suboptimal in real-world clinical settings. Patient and physician concerns with hypoglycaemia and weight gain are the two key issues that serve to impede appropriate insulinisation in patients with diabetes. Recently introduced second-generation basal insulin analogues [for e.g., insulin glargine 300 U/mL (Gla-300) and insulin degludec] are designed to have improved pharmacokinetic profiles with an intention to deliver steady insulin levels over a longer period. Several randomised controlled and real-world studies have proven the resultant advantages of second-generations insulin analogues in lowering intra-individual variability in plasma insulin levels, flexibility in dosing, a sustained glucose-lowering effect, and decreasing the risk of hypoglycaemia. Gla-300 is one of the newer second-generation basal insulin analogues to have been approved for both type 1 and 2 diabetes. In this article, we review the currently available clinical and real-world data of Gla-300.

Characteristics of Patients with Type-1 or Type-2 Diabetes Receiving Insulin Glargine U300: An Analysis of 7268 Patients Based on the DPV and DIVE Registries

INTRODUCTION

Insulin glargine 300 U/ml (U300) was registered based on the EDITION clinical trial program. The aim of this database analysis was to describe the profile of adult U300 recipients with type-1 (T1DM) or type-2 diabetes (T2DM).

METHODS

The analysis was based on data from the German DIVE/DPV registries. Patients were sampled in May (DIVE) and in March 2018 (DPV) and divided into those who commenced U300 within the 1st year (early adopters) or 2nd year (late adopters). Patients were further compared to patients receiving U100 during the same time period.

RESULTS

Among 581,519 adult patients contained in the databases, 7268 with either T1 or T2DM received U300 and 22,050 U100. Baseline characteristics of U300 and U100 recipients did not differ substantially in both types of diabetes. Patients with T2DM had many risk factors and comorbidities. The median HbA1c (both T1DM and T2DM, 8.1% for U300 and 7.9 and 8.3% for U100) and fasting blood glucose values were similar at baseline. Severe hypoglycemia was less prevalent in T2DM and among recipients of U300 (3.1 vs. 3.9%), whereas in T1DM the rate was higher (10.6 vs. 10.1%). There were minor, but clinically probably irrelevant, differences in age and BMI for T1DM and T2DM between the first and second years. Patients with T2DM being initiated in the second year had a higher HbA1c value (8.6 vs. 8.3%) than those initiated during the first year. Patients in clinical practice showed substantially higher HbA1c values in both T1DM and T2DM, and doses used were lower than those reported from the EDITION trial program. U300 patients had a longer diabetes duration (T1 and T2DM), a higher BMI and received higher basal insulin doses (T1 and T2DM) compared to U100. While HbA1c was comparable, the rate of severe hypoglycemia under U300 was reduced in T2DM but not T1DM with or without adjustment for differences in baseline characteristics in T2DM.

CONCLUSION

The data confirm the clinical profile documented for U300 in the EDITION studies during the first years of its registration. In an unselected patient population, there was a lesser rate of severe hypoglycemia but at a comparable HbA1c.

FUNDING

German Centre for Diabetes Research (DZD) (01GI1106), the European Foundation for the Study of Diabetes (EFSD) and the German Diabetes Society (DDG). The DIVE registry (organized as Diabetes Agenda 2010 GmbH, Berlin, Germany) received funding from Sanofi, AstraZeneca, Bayer, and Abbott and was conducted under the auspices of diabetesDE.