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To explore changes in body weight and cardiometabolic risk factors after treatment withdrawal in the STEP 1 trial extension.

STEP 1 (NCT03548935) randomized 1961 adults with a body mass index ≥ 30 kg/m² (or ≥ 27 kg/m² with ≥ 1 weight‐related co‐morbidity) without diabetes to 68 weeks of once‐weekly subcutaneous semaglutide 2.4 mg (including 16 weeks of dose escalation) or placebo, as an adjunct to lifestyle intervention. At week 68, treatments (including lifestyle intervention) were discontinued. An off‐treatment extension assessed for a further year a representative subset of participants who had completed 68 weeks of treatment. This subset comprised all eligible participants from any site in Canada, Germany and the UK, and sites in the United States and Japan with the highest main phase recruitment. All analyses in the extension were exploratory.