Sangamo Therapeutics Initiates Rolling Submission of BLA to U.S. FDA for ST-920 in Fabry Disease

Core Insights - Sangamo Therapeutics has initiated a rolling submission of a Biological License Application (BLA) to the FDA for isaralgagene civaparvovec, a gene therapy for Fabry disease, with expectations to complete the submission by Q2 2026 [1][4] Group 1: Study Results and Regulatory Pathway - The STAAR study demonstrated a positive mean annualized estimated glomerular filtration rate (eGFR) slope at 52 weeks across all dosed patients, which the FDA has agreed will serve as an endpoint for accelerated approval [1][3] - Isaralgagene civaparvovec has shown a favorable safety and tolerability profile, indicating its potential as a one-time, durable treatment for Fabry disease [1][3] - The rolling submission process allows for completed modules of the BLA to be reviewed by the FDA on an ongoing basis, rather than waiting for the entire application to be submitted [2] Group 2: Designations and Company Background - Isaralgagene civaparvovec has received multiple designations from regulatory bodies, including Orphan Drug, Fast Track, and RMAT from the FDA, as well as Orphan Medicinal Product designation from the European Medicines Agency [4] - Sangamo Therapeutics is focused on genomic medicine, aiming to develop treatments for serious neurological diseases and has a pipeline that includes partnered programs and opportunities for investment [7]