Treatment intensification following glucagon-like peptide-1 receptor agonists in type 2 diabetes: Comparative effectiveness analyses between different basal insulins. RESTORE-G real-world study

Abstract

Aim: To compare the effectiveness of different basal insulins (BI) prescribed as an add-on to or switch from glucagon-like peptide-1 receptor agonist (GLP-1 RA) therapy. Materials and Methods: Retrospective, real-world data from electronic medical records of 32 Italian diabetes clinics were used, after propensity score adjustment, to compare effectiveness after 6 months of treatment with second- versus first-generation BI (2BI vs. 1BI) or glargine 300 U/ml versus degludec 100 U/ml (Gla-300 vs. Deg-100), when added to (ADD-ON) or in substitution of (SWITCH) GLP-1 RA. Only comparisons, including a minimum of 100 patients per group, were performed to ensure adequate robustness of the analyses. Results: In the ADD-ON cohort (N = 700), greater benefits of 2BI versus 1BI were found in glycated haemoglobin {HbA1c; estimated mean difference: −0.32% [95% confidence interval (CI) −0.62; −0.02]; p =.04} and fasting blood glucose [FBG; −20.73 mg/dl (95% CI −35.62; −5.84); p =.007]. In the SWITCH cohort (N = 2097), greater benefits of 2BI versus 1BI were found in HbA1c [−0.22% (95% CI −0.42; −0.02); p =.03], FBG [−10.15 mg/dl (95% CI −19.04; −1.26); p =.03], and body weight [−0.67 kg (95% CI −1.30; −0.04); p =.04]. In the SWITCH cohort starting 2BI (N = 688), marked differences in favour of Gla-300 versus Deg-100 were documented in HbA1c [−0.89% (95% CI −1.26; −0.52); p