Biogen and Stoke add to zorevunersen data package in Dravet syndrome

10 October 2025

US biotech major Biogen (Nasdaq: BIIB) and RNA medicine specialist Stoke Therapeutics (Nasdaq: STOK) have presented longer-term follow-up analyses from the ongoing open-label extension (OLE) studies of zorevunersen supporting its potential as a disease-modifying medicine for Dravet syndrome.

The new results were presented at the 54th Child Neurology Society (CNS) Annual Meeting.

New two-year data from an analysis that was initially performed to understand the potential effects of the Phase III dosing regimen on cognition and behavior showed continuing improvements at two years.

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