GLP1R and obesity due to melanocortin 4 receptor deficiency: We searched PubMed, Excerpta Medica database (Embase), Cochrane Controlled Register of Trials (CENTRAL), and Web of Science (January 2015-January 2025) for randomized controlled trials evaluating GLP-1 RAs in non-diabetic adults with obesity (BMI ≥30 kg/m2), with composite major adverse cardiovascular events (MACE) as the primary outcome using random-effects models with risk ratios (RRs) and 95% confidence intervals (CIs).