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FDA approves rebisufligene etisparvovec, first gene therapy for Sanfilippo syndrome type A

Published

17 September 2026

Topic

opportunities

◆ Sectors

Biotech

◆ Geography

United States

◆ Source

Read at contemporarypediatrics.com →

◆ Verified

Fusion42 · 17 September 2026 · Fusion42 review

The FDA approved Fayuvi (rebisufligene etisparvovec-hopf), a one-time intravenous AAV9 gene therapy, as the first treatment for pediatric patients with Sanfilippo syndrome type A (MPS IIIA), a rare fatal neurodegenerative disease that previously had no therapy to alter its course.

This Wire brief sits within Fusion42's coverage of Biotech, and 2 sources have reported it.

◆ ◆ The Wire takeaway

You must update pipelines and clinical outreach to account for Fayuvi as the first approved gene therapy altering Sanfilippo syndrome. This approval opens opportunities in rare paediatric neurodegenerative disorders where no treatments existed.

◆ Coverage

2 sources · 17 Sep 2026

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◆ Topics

Biotechfda-approvalgene-therapyrare-diseasesanfilippo-syndromepediatric-treatment