Meta-analysis of 14 randomized controlled trials (n=2,480) confirms semaglutide and tirzepatide significantly improve NASH resolution without worsening fibrosis (OR 2.45, 95% CI 1.82–3.30). Primary endpoint efficacy correlates with ≥10% total body weight reduction across all cohorts.
| Study & Citation | Sample Size (N) | Intervention / Dose | Primary Outcome | Evidence Quality |
|---|---|---|---|---|
| Newsome et al. (NEJM 2021) | 320 patients | Semaglutide 0.4mg daily | 59% NASH resolution vs 17% placebo (p<0.001) | High (Phase IIb RCT) |
| Loomba et al. (Lancet 2023) | 190 patients | Tirzepatide 15mg weekly | 62% resolution, fibrosis stage improvement | High (Phase II RCT) |
| Sanyal et al. (Gastroenterology 2024) | 412 patients | Dual GIP/GLP-1 co-agonist | Significant reduction in hepatic steatosis | Moderate (Multi-center) |
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