Clinical Benefit of Insulin Glargine 300 U/mL Among Patients with Type 2 Diabetes Mellitus Previously Uncontrolled on Basal or Premixed Insulin in Serbia: A Prospective, Observational, Single-Arm, Multicenter, Real-World Study

INTRODUCTION: Insulin glargine 300 U/mL (Gla-300) is a novel glargine formulation which shows slower and more prolonged absorption following subcutaneous administration in comparison to insulin glargine 100 U/mL. In this prospective, observational, single-arm, multicenter, real-world study conducted in Serbia, we evaluated the effectiveness and safety of Gla-300 in patients with type 2 diabetes mellitus (T2DM) previously inadequately controlled with different basal or premix insulin therapy regimes. METHODS: A total of 350 patients with T2DM were enrolled by 27 physicians, from date of the first patient in (12 December 2017) to the date of last patient completed/last patient out (30 October 2018), from both medical centers and general hospitals. Patients’ observation and data collection were performed at visit 1 (V1), i.e., the inclusion visit (3–6 months after Gla-300 introduction), including collection of retrospective data from the patients’ medical charts at the time of Gla-300 introduction, and at visit 2 (V2) (3–6 months after V1). The primary objective was to assess the change in glycated hemoglobin (HbA1c) level from day of the Gla-300 initiation to the end of the observational period, while the secondary objectives included other effectiveness, as well as safety and other clinically relevant data. RESULTS: The mean age of the 350 patients was 63.4 ± 8.4 years and 56.3% were female. The mean duration of diabetes was 13.4 ± 7.4 years, while the mean duration of insulin therapy prior to Gla-300 initiation was 5.3 ± 3.9 years. There was a significant reduction in HbA1c level at each visit compared to the previous visit (8.63 ± 1.52% at baseline prior to Gla-300 initiation, 7.87 ± 1.13% at V1, 7.45 ± 1.05% at V2; p < 0.01 vs. previous visit) accompanied by significant reduction of all hypoglycemic events (p < 0.01). CONCLUSION: Initiation of Gla-300 therapy significantly improved glycemic control and reduced the risk of hypoglycemia in patients with T2DM inadequately controlled with different basal or premix insulin therapy regimes. FUNDING: Sanofi Serbia.