BioMarin Pharmaceutical : Announces Positive Phase 3 Gene Therapy Trial Results in Adults with Severe Hemophilia A, Study Met All Primary and Secondary Efficacy Endpoints in One-Year Data Set

SAN RAFAEL - BioMarin Pharmaceutical Inc. (NASDAQ: BMRN) today announced positive topline results from its ongoing global Phase 3 GENEr8-1 study of valoctocogene roxaparvovec, an investigational gene therapy for the treatment of adults with severe hemophilia A.

This is the largest global Phase 3 study to date for any gene therapy in any indication, with 134 participants. All participants in the study received a single dose of valoctocogene roxaparvovec and completed a year or more of follow-up.

Data from the GENEr8-1 Phase 3 study with a mean follow-up of 71.6 weeks showed that in the pre-specified primary analysis for Annualized Bleeding Rate (ABR) a single dose of valoctocogene roxaparvovec significantly reduced ABR by 84% from a prospectively collected 4.8 (median 2.8) at baseline to 0.8 (median 0.0) bleeding episodes per year (p-value

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