Real‐world outcomes of addition of insulin glargine 300 U/mL (Gla‐300) to glucagon‐like peptide‐1 receptor agonist (GLP‐1 RA) therapy in people with type 2 diabetes: The DELIVER‐G study

AIMS: To provide real‐world data on the addition of basal insulin (BI) in people with type 2 diabetes mellitus (PWD2) suboptimally controlled with glucagon‐like peptide‐1 receptor agonist (GLP‐1RA) therapy. However, real‐world data on the addition of BI to GLP‐1RA therapy are limited. MATERIALS AND METHODS: We used a US electronic medical record data source (IBM® Explorys®) that includes approximately 4 million PWD2 to assess the real‐world impact of adding the second‐generation BI analogue insulin glargine 300 U/mL (Gla‐300) to GLP‐1RA therapy. Insulin‐naïve PWD2 receiving GLP‐1RAs who also received Gla‐300 between March 1, 2015 and September 30, 2019 were identified; participants were required to have data for ≥12 months before, and ≥6 months after, addition of Gla‐300. RESULTS: The mean (standard deviation [SD]) age of participants (N = 271) was 57.9 (10.8) years. Baseline glycated haemoglobin (HbA1c) was 9.16% and was significantly reduced (−0.97 [SD 1.60]%; P < 0.0001) after addition of Gla‐300; a significant increase in the proportion of PWD2 achieving HbA1c control was observed after addition of Gla‐300 (HbA1c <7.0%: 4.80% vs. 22.14%, P < 0.0001; HbA1c <8.0%: 19.56% vs. 51.29%, P < 0.0001). The incidence of overall (8.49% vs. 9.59%; P = 0.513) and inpatient/emergency department (ED)‐associated hypoglycaemia (0.37% vs. 0.74%; P = 1.000), as well as overall (0.33 vs. 0.46 per person per year [PPPY]; P = 0.170) and inpatient/ED‐associated hypoglycaemia events (0.01 vs. 0.04 PPPY; P = 0.466) were similar before and after addition of Gla‐300. CONCLUSIONS: In US real‐world clinical practice, adding Gla‐300 to GLP‐1RA significantly improved glycaemic control without significantly increasing hypoglycaemia in PWD2. Further research into the effect of adding Gla‐300 to GLP‐1RA therapy is warranted.