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Roche's Obesity Drug Helps Almost 87% People Lose At Least 10% Weight - Roche Holding (OTC:RHHBY)

CT-388 showed a strong dose-response with 95.7% of participants losing over 5% body weight and 26.1% losing over 30% at 48 weeks, with mostly mild gastrointestinal side effects.

  • On Tuesday, Roche Holdings AG released CT388-103 topline results showing more than 87% of CT-388-treated participants achieved over 10% weight loss at week 48.
  • The 48-patient CT388-103 Phase 2 trial evaluated CT-388 as a once-weekly subcutaneous dual GLP-1/GIP receptor agonist across five dosing cohorts with up-titration, in adults with obesity or overweight and at least one weight-related comorbidity, Roche said.
  • Placebo-Adjusted measures showed significant weight loss with treatment-regimen and efficacy estimands recording 18.3% and 22.5% reductions, while responder thresholds at week 48 included 95.7% >5%, 47.8% >20%, and 26.1% >30%.
  • Safety readouts indicated tolerability consistent with the drug class, with mostly mild-to-moderate gastrointestinal-related adverse events and treatment discontinuation rates of 5.9% in CT-388 arms versus 1.3% placebo.
  • Roche designated CT-388 as a fast-track asset and expects Phase III programmes Enith1 and Enith2 to start this quarter, exploring petrelintide combination plans after the Carmot Therapeutics acquisition .
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Lean Right

The company paved the way in the fight against obesity drugs with robust results from the mid-phase clinical trial of CT-388 and is moving towards the start of its late-phase study.

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The Manila Times broke the news in Manila, Philippines on Tuesday, January 27, 2026.
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