Regeneron Pharmaceuticals IncFDA approval of Pasatru for FOP, a new drug, is a positive product/regulatory milestone for Regeneron.

The U.S. Food and Drug Administration has approved Regeneron Pharmaceuticals' Pasatru (garetosmab-grts) to reduce new heterotopic ossification lesions and clinician-assessed flare-ups in adults with fibrodysplasia ossificans progressiva. Approval was based on the Phase 3 OPTIMA trial, which showed a 90% or greater reduction in new HO lesions at 56 weeks compared to placebo. The recommended starting dosage is 10 mg/kg intravenously once monthly, with a possible decrease to 3 mg/kg if not tolerated. Pasatru is a fully human monoclonal antibody that blocks Activin A, a protein critical in the development of HO lesions. Regeneron plans to begin a Phase 3 trial in adolescents and children later this year, and regulatory submissions are under review in the European Union and planned in Japan.
Regeneron Pharmaceuticals IncFDA approval of Pasatru for FOP, a new drug, is a positive product/regulatory milestone for Regeneron.