Use of iGlarLixi for Management of Type 2 Diabetes in Japanese Clinical Practice: SPARTA Japan, a Retrospective Observational Study

Real-world effectiveness and safety of insulin glargine 100 U/mL plus lixisenatide in adults with type 2 diabetes: An international, multicentre, 12-month, prospective observational study

AIM

To assess the impact of insulin glargine (100 U/mL) and lixisenatide (iGlarLixi) fixed-ratio combination therapy on the overall management of glycaemia in patients with type 2 diabetes (T2D), previously inadequately controlled with oral antidiabetic drugs ± basal insulin or glucagon-like peptide-1 receptor agonists (GLP-1 RAs).

MATERIALS AND METHODS

This 12-month, international, multicentre, prospective, observational study included patients (age ≥ 18 years) with T2D who had initiated iGlarLixi within 1 month prior to study inclusion. Data were collected at study inclusion, month 3, month 6 and month 12 from patient diaries, self-measured plasma glucose, and questionnaires. The primary endpoint was change in HbA1c from baseline to month 6.

RESULTS

Of the 737 eligible participants (mean age: 57.8 [standard deviation: 11.2] years; male: 49%), 685 had baseline and post-baseline HbA1c data available. The least squares mean change in HbA1c from baseline to month 6 was -1.4% (standard error [95% confidence interval (CI)]: 0.05 [-1.5, -1.3]). The absolute change from baseline at month 12 was -1.7% ± 1.9% (95% CI: -1.9, -1.5). There were 72 hypoglycaemia events reported during the study period, with a very low incidence of severe hypoglycaemia (two participants [rate: 0.003 events per patient-year]).

CONCLUSIONS

This real-world observational study shows that initiation of iGlarLixi in people with T2D inadequately controlled on oral antidiabetic drugs ± basal insulin or GLP-1 RAs improves glycaemic control with a low incidence of hypoglycaemia.

Impact of Participant Characteristics on Clinical Outcomes with iGlarLixi in Type 2 Diabetes: Post Hoc Analysis of SPARTA Japan

INTRODUCTION

The real-world SPARTA Japan study confirmed the effectiveness and safety of the fixed-ratio combination of insulin glargine 100 U/mL plus lixisenatide (iGlarLixi) once daily over 6 months in Japanese people with type 2 diabetes (T2D). This post hoc analysis examined the impact of participant characteristics on the achievement of age-defined glycaemic targets with iGlarLixi therapy.

METHODS

The retrospective, observational SPARTA Japan study included adults with T2D who initiated iGlarLixi. In this analysis, data from insulin-naïve and insulin-experienced participants were separately assessed to compare glycated haemoglobin (HbA1c), body weight and safety outcomes between those who achieved ('achieved' group) and those who did not achieve ('not-achieved' group) age-defined glycaemic targets after 6 months of iGlarLixi. The not-achieved group was further stratified by whether or not their iGlarLixi dose was increased during treatment.

RESULTS

In total, 418 participants were included in this analysis (138 insulin naïve and 280 insulin experienced). Among both insulin-naïve and insulin-experienced participants, those in the achieved group were older and had lower baseline HbA1c than those in the not-achieved group. Compared with the not-achieved group, the achieved group showed significantly greater HbA1c reductions from baseline (in both insulin-naïve and insulin-experienced participants) and significantly greater body weight reductions (in insulin-naïve participants), despite some participants in the not-achieved group receiving significantly higher insulin glargine doses than those in the achieved group. In both insulin-naïve and insulin-experienced participants, the incidence of hypoglycaemia and gastrointestinal-related adverse events was similar in the achieved and not-achieved groups. In a multivariate analysis, glycaemic target achievement was significantly more likely in older individuals and those who lost weight during iGlarLixi treatment.

CONCLUSIONS

Achievement of age-defined glycaemic targets with iGlarLixi treatment for 6 months was significantly affected by increased age and body weight loss, regardless of prior insulin exposure.

TRIAL REGISTRATION

UMIN-CTR Trials Registry, UMIN000044126; registered 10 May 2021.

Use of iGlarLixi for the Management of Type 2 Diabetes in Japanese Clinical Practice: Prior Treatment Subgroup Analysis of the SPARTA Japan Study

INTRODUCTION

iGlarLixi, a fixed-ratio combination of insulin glargine 100 U/mL and the glucagon-like peptide 1 receptor agonist (GLP-1 RA) lixisenatide, is one option for treatment intensification in individuals with type 2 diabetes (T2D) who are unable to achieve targeted glycaemic control with their current glucose-lowering agent. Real-world data on the impact of prior treatment on the effectiveness and safety of iGlarLixi may be useful to guide individualised treatment decisions.

METHODS

This analysis of the 6-month, retrospective, observational SPARTA Japan study compared glycated haemoglobin (HbA1c), body weight and safety for pre-specified subgroups defined by prior treatment: post oral antidiabetic agent (OAD), GLP-1 RA, basal insulin (BI) + OADs (BOT), GLP-1 RA + BI or multiple daily injections (MDI). The post BOT and MDI subgroups were further divided on the basis of prior dipeptidyl peptidase 4 inhibitor (DPP-4i) use, and the post MDI group was divided on the basis of whether participants continued bolus insulin.

RESULTS

Of the 432 participants in the full analysis set (FAS), 337 were included in this subgroup analysis. Across subgroups, mean baseline HbA1c ranged from 8.49% to 9.18%. iGlarLixi significantly (p < 0.05) reduced mean HbA1c from baseline in all but the post GLP-1 RA + BI group. At 6 months, these significant reductions ranged from 0.47% to 1.27%. Prior DPP-4i exposure had no impact on the HbA1c-lowering effect of iGlarLixi. Mean body weight decreased significantly in the FAS (0.5 kg) and the post BOT (1.2 kg) and MDI (1.5 and 1.9 kg) subgroups but increased in the post GLP-1 RA subgroup (1.3 kg). iGlarLixi treatment was generally well tolerated, with very few participants discontinuing because of hypoglycaemia or gastrointestinal events.

CONCLUSION

In participants with suboptimal glycaemic control on various regimens, 6 months of iGlarLixi treatment improved HbA1c in all but one prior treatment subgroup (GLP-1 RA + BI), and was generally well tolerated.

TRIAL REGISTRATION

UMIN-CTR Trials Registry, UMIN000044126; registered 10 May 2021.