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Ultragenyx Gene Therapy Is First Approved Treatment for Rare Neuro Disease Sanfilippo
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Fusion42 · 18 September 2026 · Fusion42 review
Ultragenyx Pharmaceutical received FDA approval for Fayuvi, the first gene therapy treatment for Sanfilippo syndrome type A, a rare and fatal neurodegenerative disease affecting children. The therapy is a one-time intravenous infusion designed to deliver a working gene for the deficient enzyme, offering the first treatment option beyond symptom management and supportive care.
This Wire brief sits within Fusion42's coverage of Biotech, and 9 sources have reported it between 17 Sep 2026 and 28 Sep 2026.
◆ ◆ The Wire takeaway
This approval opens a new market for gene therapies targeting rare childhood neurological diseases, making it critical for you to engage pediatric neurology specialists on early intervention pathways. The $4 million price signals strong commercial potential but also buyer scrutiny, so prepare for payer negotiations early.
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9 sources · first reported 17 Sep 2026 · latest 28 Sep 2026
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