Frontiers in cardiovascular medicine · 2025
Effects of subcutaneous or oral semaglutide on cardiovascular outcomes in patients with type 2 diabetes mellitus: a meta-analysis of randomized controlled trials.
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Tan Sihua, Yin Yangguang, Lu Juexiu
Аннотация
BACKGROUND: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs), such as semaglutide, reduce cardiovascular risk in type 2 diabetes mellitus (T2DM), but the consistency between oral and subcutaneous formulations remains unclear.
METHODS: This meta-analysis was registered prospectively in PROSPERO (CRD 420251147337). A systematic search of PubMed, Embase, Cochrane Library, and Web of Science identified randomized controlled trials (RCTs) on semaglutide and cardiovascular outcomes. Pooled hazard ratios (HRs) with 95% confidence intervals (CIs) were calculated using fixed-/random-effects models, with sensitivity, subgroup, and GRADE assessments.
RESULTS: Four RCTs (n = 19,663) showed semaglutide significantly reduced primary outcome risk (HR 0.83; 95% CI 0.76-0.91), nonfatal myocardial infarction (HR 0.79; 0.67-0.92), and revascularization (HR 0.71; 0.61-0.83), with a modest decrease in heart failure hospitalization (HR 0.85; 0.72-1.00). No significant effects were seen for cardiovascular death, all-cause death, nonfatal stroke, or unstable angina hospitalization. Subgroup analyses confirmed no efficacy differences between formulations. Evidence quality was "moderate" for cardiovascular death, all-cause death, nonfatal stroke, unstable angina hospitalization, and "high" for the remainder.
CONCLUSIONS: Semaglutide lowers cardiovascular risk in T2DM, primarily improving major adverse cardiovascular events, nonfatal myocardial infarction, and revascularization, with oral and subcutaneous forms demonstrating consistent efficacy.
SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/PROSPERO/view/CRD420251147337, PROSPERO CRD420251147337.
METHODS: This meta-analysis was registered prospectively in PROSPERO (CRD 420251147337). A systematic search of PubMed, Embase, Cochrane Library, and Web of Science identified randomized controlled trials (RCTs) on semaglutide and cardiovascular outcomes. Pooled hazard ratios (HRs) with 95% confidence intervals (CIs) were calculated using fixed-/random-effects models, with sensitivity, subgroup, and GRADE assessments.
RESULTS: Four RCTs (n = 19,663) showed semaglutide significantly reduced primary outcome risk (HR 0.83; 95% CI 0.76-0.91), nonfatal myocardial infarction (HR 0.79; 0.67-0.92), and revascularization (HR 0.71; 0.61-0.83), with a modest decrease in heart failure hospitalization (HR 0.85; 0.72-1.00). No significant effects were seen for cardiovascular death, all-cause death, nonfatal stroke, or unstable angina hospitalization. Subgroup analyses confirmed no efficacy differences between formulations. Evidence quality was "moderate" for cardiovascular death, all-cause death, nonfatal stroke, unstable angina hospitalization, and "high" for the remainder.
CONCLUSIONS: Semaglutide lowers cardiovascular risk in T2DM, primarily improving major adverse cardiovascular events, nonfatal myocardial infarction, and revascularization, with oral and subcutaneous forms demonstrating consistent efficacy.
SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/PROSPERO/view/CRD420251147337, PROSPERO CRD420251147337.