NewsDialy

Sanfilippo syndrome gets its first gene therapy approval after more than a decade of research

9/18/2026

A rare childhood disease called Sanfilippo syndrome now has an approved gene therapy, the first one in the disease's history.

Gene therapy, in plain terms, is a treatment that introduces corrected genetic material into a patient's cells to fix the underlying cause of a disease rather than treating its symptoms.

This approval marks the end of a process that took more than a decade to complete. That decade carries a heavy human weight.

Many children with Sanfilippo syndrome declined or died while their families waited for a treatment to clear the regulatory process.