Precigen has submitted a Biologics License Application (BLA) to the FDA, seeking priority review for PRGN-2012, which could become the first FDA-approved treatment for adults with recurrent respiratory papillomatosis (RRP)—a rare and chronic disease currently managed through repeated surgeries. PRGN-2012 has received Breakthrough Therapy and Orphan Drug Designations from both the FDA and the European Commission. The application, submitted under an accelerated approval pathway, is backed by Phase 1/2 study data showing over 50% of patients achieved Complete Response and more than 85% experienced fewer surgeries in the year following treatment. PRGN-2012 was also well-tolerated, with no dose-limiting toxicities and no severe treatment-related adverse events.
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