Abstract
Tirzepatide (TZP) is a new dual glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptor agonist approved for type 2 diabetes and shown to have substantial efficacy on weight loss. We performed a meta-analysis to assess the efficacy and safety of TZP for weight loss. We searched PubMed, Cochrane and Embase up until July 2022 for RCTs comparing TZP with placebo for the co-primary endpoints of absolute and percent change in weight. Mean difference (MD) and odds ratios (OR) were utilized, respectively, for continuous and binary outcomes. Of 397 search results, 6 studies were included, with 4036 participants. Pooled analysis showed that TZP 5 mg, 10 mg, and 15 mg were more effective than placebo, with MD in body weight change ranging from -7.7 kg (95% CI -11.0, -4.4; p < 0.001) to -11.8 kg (95% CI -17.4, -6.2; p < 0.001) - Figure 1A. The MD in percent change in weight ranged from -8.1% (95% CI -11.0, -5.2; p < 0.001) to -12.4% (95% CI -17.2, -7.5; p < 0.001) - Figure 1B. Adverse events were more frequent with TZP compared with placebo, especially with the 15 mg dose, with respect to nausea (OR 4.2; 95% CI 2.4, 7.5; p < 0.001), vomiting (OR 7.0; 95% CI 4.3, 11.4; p < 0.001), and diarrhea (OR 2.8; 95% CI 1.6, 4.9; p < 0.001). The results support that TZP leads to a significant reduction in body weight and may be a valuable therapeutic option for weight management, despite an increase in gastrointestinal side effects. Disclosure Y.L.L.Mesquita: None. I.P.Calvi: None. I.R.Marques: None. S.A.Cruz: None. E.M.H.Padrao: None. R.Cardoso: None. F.Moura: None. V.V.Rafalskiy: None.
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