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Dyne Therapeutics Announces Submission of Biologics License Application (BLA) to U.S. FDA for Z-Rostudirsen in Exon 51 Duchenne Muscular Dystrophy (DMD)

$DYNPress releaseMay 26, 2026, 7:30 AM ETRead the release

Dyne Therapeutics submitted a Biologics License Application (BLA) to the FDA for z-rostudirsen, targeting Duchenne muscular dystrophy patients amenable to exon 51 skipping. The application seeks Accelerated Approval based on dystrophin production as a surrogate endpoint, supported by data from the registrational expansion cohort of the Phase 1/2 DELIVER trial. Dyne has requested Priority Review, which would shorten the FDA review period to six months, supporting a potential U.S.

Key figures

Drug Name
z-rostudirsen (DYNE-251)
Phase Of Trial
Phase 1/2
Dosing regimen
20 mg/kg Q4W
Expected launch
Q1 2027
Target population
Exon 51 DMD
Priority review duration
6 months

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