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flag Regeneron's garetosmab reduced new bone growth in FOP patients by 90% to 94% in Phase 3 trial.

flag Regeneron Pharmaceuticals reported positive Phase 3 trial results for garetosmab, an experimental drug treating fibrodysplasia ossificans progressiva (FOP), a rare genetic disorder causing abnormal bone growth in soft tissues. flag The trial met its primary endpoint, showing a 90% to 94% reduction in new bone lesions compared to placebo in adults with FOP. flag The drug targets activin A, a protein linked to abnormal bone formation. flag Regeneron plans to file for U.S. approval by year-end 2025 and submit globally in 2026, with a new trial planned for younger patients. flag FOP affects about 900 diagnosed individuals worldwide, and garetosmab could become a key treatment option, competing with the currently approved drug Sohonos.

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