Fixed-Ratio Combinations of Basal Insulin and Glp-1ra in the Management of Type 2 Diabetes Mellitus: Highlight from Literature
Introduction: New evidences suggest that combining basal insulin with glucagone-like peptide 1 receptor agonists (GLP-1RA) in patients with type 2 diabetes could promptly ameliorate the glucose control and prevent both hypoglycaemia and weight gain compared with more intensive insulin regimens. Aim of the study: To review the efficacy/effectiveness and safety of fixed-ratio combinations of basal insulin and GLP-1RA (FRCs). Methods: We asked the web for freely available medical data concerning the aim of the study, and selected original articles, randomized clinical trials (RCTs), clinical reviews, and meta-analysis written in English. Results: FRCs provide a significative improvement in glucose control in both insulin-naïve (-1.4% to -2% HbA1c from aseline) and insulin-experienced (-1.5% to -2% HbA1c from baseline) type 2 diabetic patients with moderate glucose impairment. More patients achieved the recommended glycaemic targets on FRCs compared to those on mono-therapy with basal insulin or GLP-1RAs. The intensification with FRCs results in a better glycaemic control compared to basal insulin at fasting as well as during the postprandial state. The frequency of hypoglycaemia is similar or lower in patients treated with FRCs than in those on basal insulin alone at similar dose. Weight trend can be variable, ranging from -2.7 to +2 Kg for iDegLira and -0.7 to -1.3 Kg for iGlarLixi. However, a lower weight gain is obtained with iDegLira compared to iDeg (-2.2 to - 2.5 Kg), iGlar (-1.7 to 3.2 Kg), and basal-bolus (-3.6 Kg) as well as with iGlarLixi compared to iGlar (-1.4 Kg). Discussion and Conclusion: FRCs should be considered for safely improve the metabolic control in type 2 diabetic patients.