Obesity

Tirzepatide 10 and 15 mg versus semaglutide 2.4 mg in people with obesity or overweight with type 2 diabetes: An indirect treatment comparison

Diabetes Obes MetabPublished Indirect treatment comparison

Authors' conclusion

This analysis suggested greater reductions in bodyweight and HbA1c (%) levels associated with tirzepatide 10 and 15 mg than with semaglutide 2.4 mg in people with obesity or overweight and T2D.

Study context

Population
People with obesity or overweight and T2D
Comparison
Tirzepatide 10 and 15 mg vs semaglutide 2.4 mg
Outcome
Mean percent change in weight from baseline
Follow-up
Week 72 (tirzepatide) / week 68 (semaglutide)
Methodological detailsBucher method, efficacy estimand, sensitivity analyses: matching-adjusted indirect comparison, treatment regimen estimand, outcomes at 68 weeks
  • Bucher method
  • Efficacy estimand
  • Sensitivity analyses: matching-adjusted indirect comparison, treatment regimen estimand, outcomes at 68 weeks

Main finding

As reported in the abstract

Mean difference

2.57 %

P < 0.01

Tirzepatide 10 mg

Mean difference

4.79 %

P < 0.01

Tirzepatide 15 mg

Further findings

OutcomeOR (95% CI)P value
Weight reduction ≥5%Tirzepatide 15 mgvs Semaglutide 2.4 mg1.76 (1.04–2.97)P = 0.035
Weight reduction ≥5%Tirzepatide 10 mgvs Semaglutide 2.4 mg1.24 (0.75–2.04)P = 0.407
OutcomeMean difference (%)P value
Mean change in HbA1c (%)Tirzepatide 10 mg vs Semaglutide 2.4 mg · greater HbA1c reduction with tirzepatide0.47P < 0.001
Mean change in HbA1c (%)Tirzepatide 15 mg vs Semaglutide 2.4 mg · greater HbA1c reduction with tirzepatide0.56P < 0.001

Sensitivity analyses

Generally consistent with the primary analysis, exceptions including when power was reduced in the matching-adjusted indirect comparison analyses and in the categorical weight reduction outcome

Original publication

Tirzepatide 10 and 15 mg versus semaglutide 2.4 mg in people with obesity or overweight with type 2 diabetes: An indirect treatment comparison. Diabetes Obes Metab. Published 5 May 2025. doi:10.1111/dom.16401

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