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Comparison of Efficacy and Safety of Commercially Available Fixed-Ratio Combinations of Insulin Degludec/Liraglutide and Insulin Glargine/Lixisenatide: A Network Meta-analysis

Journal

CANADIAN JOURNAL OF DIABETES
Volume 47, Issue 4, Pages 368-377

Publisher

ELSEVIER
DOI: 10.1016/j.jcjd.2023.03.002

Keywords

basal insulin; GLP-1 receptor agonist; insulin degludec; insulin glargine; liraglutide; lixisenatide; network meta-analysis

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This study aimed to compare the efficacy and safety of commercially available fixed-ratio combinations of GLP-1RAs and basal insulins in patients with type 2 diabetes. The results showed that both fixed-ratio combinations were more effective in reducing A1C levels compared to their individual components, with no significant difference between the combinations. GLP-1RAs and IDegLira were associated with lower weight gain and lower incidence of hypoglycemia compared to iGlarLixi and basal insulins.
Objectives: Our aim in this study was to compare the efficacy and safety of commercially available fixed-ratio combinations (FRCs) of glucagon-like peptide-1 receptor agonists (GLP-1RAs) and basal insulins by a network meta-analysis of randomized controlled trials (RCTs) of people with type 2 diabetes.Methods: We present a systematic review and network meta-analyses of RCTs of individuals with type 2 diabetes randomized to FRCs or to their components for >24 weeks. All reports were obtained from PubMed or ClinicalTrials.gov up to February 28, 2022. The primary outcome was glycated hemoglobin (A1C) level attained. Secondary outcomes included fasting plasma glucose, change in body weight, and incident hypoglycemia. Treatment effects were estimated as mean difference (MD) and standard error (SE), or as odds ratio (OR) with 95% confidence interval (CI) using the fixed combination of insulin glargine 100 IU/mL and lixisenatide (iGlarLixi) as reference.Results: We included 29 RCTs from among the 1,404 articles identified. No direct comparisons between FRCs were found. After excluding some insulin-capped trials to reach model consistency, both FRCs were more efficacious regarding A1C than their components, but no difference between FRCs was found (MD,-0.10%; SE, 0.10%). The effect of the fixed combination of insulin degludec and liraglutide (IDegLira) (MD,-0.47 mmol/L; SE, 0.24 mmol/L) and basal insulins was similar to that of iGlarLixi (reference) on fasting glucose, whereas GLP-1RAs had lower efficacy than iGlarLixi. Weight gain was lower with GLP-1RAs and IDegLira (MD,-0.72 kg; SE, 0.32 kg) than with iGlarLixi (reference) and higher with basal insulins. Incident hypo-glycemia (based on different definitions) was least frequent with GLP-1RAs, followed by IDegLira (OR, 0.78; 95% CI, 0.39 to 1.57), iGlarLixi (reference), and basal insulins.Conclusions: For A1C, both FRCs were more efficacious over their individual components, with similar efficacies of the 2 FRCs.& COPY; 2023 The Author(s). Published by Elsevier Inc. on behalf of Canadian Diabetes Association. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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