Ionis Pharmaceuticals
zilganersen
Alexander disease
Countdown
78days
FDA decision · Sep 22, 2026
What's at stake
The FDA's approval decision on zilganersen for Alexander disease is due Sep 22, 2026. A green light opens the market; a complete response letter (CRL) usually sinks the stock.
Primary source
· SEC 8-K
verified 13h ago
“Zilganersen is currently under Priority Review by the U.S. Food and Drug Administration with a Prescription Drug User Fee Act action date of September 22, 2026.”