Survodutide for treatment of obesity: Baseline characteristics of participants in a randomized, double-blind, placebo-controlled, phase 3 trial (SYNCHRONIZE™-1).
This paper reports the baseline characteristics of participants enrolled in SYNCHRONIZE-1, a multinational, randomized, double-blind, placebo-controlled Phase 3 trial evaluating survodutide — a dual glucagon receptor and GLP-1 receptor agonist — for weight management in adults with obesity but without type 2 diabetes. A total of 725 participants from 14 countries were randomized 1:1:1 to receive once-weekly subcutaneous injections of survodutide (up-titrated to 3.6 mg or 6.0 mg) or placebo over 76 weeks. At baseline, participants had a mean age of 47.1 years, mean BMI of 37.9 kg/m², and mean waist circumference of 115.2 cm; 59.4% were female. Common obesity-related complications included hypertension (40.0%), dyslipidaemia (33.7%), and prediabetes (30.2%). The primary endpoints are percent body weight change and achievement of ≥5% body weight reduction from baseline to Week 76. As this publication covers only baseline data, no efficacy or safety outcomes are yet reported. The study's key limitation at this stage is that it describes enrollment characteristics only, with no outcome data available.
Why this grade: This publication reports only baseline characteristics of an ongoing Phase 3 RCT; no efficacy or safety outcome data have been presented yet, making it insufficient for grading claims about survodutide's effects in humans.
Aims Survodutide, a novel glucagon receptor and glucagon-like peptide-1 (GLP-1) receptor dual agonist, elicited significant weight loss in a phase 2 trial in individuals with obesity without type 2 diabetes (T2D). Two multinational phase 3 trials are investigating survodutide for obesity management in individuals with or without T2D. We report the baseline characteristics of participants in the SYNCHRONIZE-1 trial in adults with obesity without T2D (ClinicalTrials.gov: NCT06066515). Materials and methods Participants aged ≥18 years with BMI ≥30 or ≥27 kg/m 2 with ≥1 obesity complication without T2D were randomized 1:1:1 to double-blind, once-weekly, subcutaneous injections of survodutide (up-titrated to 3.6 or 6.0 mg) or placebo for 76 weeks. The primary endpoints are percent body weight change and achievement of body weight reduction ≥5% from baseline to Week 76. Efficacy and safety analyses will include all randomized and treated participants. Results At baseline, participants (n = 725 from 14 countries) had a mean age of 47.1 years, BMI 37.9 kg/m 2 , and waist circumference 115.2 cm. Most participants (59.4%) were female; 47.3% were from North America, 21.0% from Europe, and 20.0% from East Asia. Obesity complications included hypertension (40.0%), dyslipidaemia (33.7%), and prediabetes (30.2%). Mean haemoglobin A1c was 5.5%, estimated glomerular filtration rate 93.0 mL/min/1.73 m 2 , systolic/diastolic blood pressure 127.0/82.7 mmHg, and low-density lipoprotein cholesterol 116.4 mg/dL; 21.8% were taking lipid-lowering drugs. Conclusions SYNCHRONIZE-1 will determine the efficacy, safety, and tolerability of survodutide, a glucagon receptor/GLP-1 receptor dual agonist, for weight loss in a representative cohort of people with obesity without T2D.
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