Clinical Research · Updated May 2026

STEP Trial Results: Semaglutide Pivotal Trials

STEP-1 through STEP-8 — trial designs, populations, primary endpoints. STEP-1 (NEJM 2021): 14.9% weight loss at 68 weeks. PMID 33567185. STEP-3, STEP-4, STEP-5 maintenance and adolescent data.

Dr. Parmis - Medical Researcher
Researched By
Dr. Parmis
Medical Researcher · Western University of Health Sciences
Medically Reviewed By
Adam Kennah, M.D.
Board-Certified Physician
Last clinically reviewed: April 28, 2026 · This page is informational and does not constitute medical advice.

Summary

STEP-1 through STEP-8 — trial designs, populations, primary endpoints. STEP-1 (NEJM 2021): 14.9% weight loss at 68 weeks. PMID 33567185. STEP-3, STEP-4, STEP-5 maintenance and adolescent data.

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Note for patients: Clinical trial data on this site is summarized for general education. Specific dosing decisions, contraindication assessments, and treatment plans must be made with a licensed healthcare provider who has reviewed your full medical history.