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DYNE-251 Exon 51 Skipping Therapy for Duchenne Muscular Dystrophy: FORZETTO Clinical Trial

Actively RecruitingPhase 3Exon Skipping

Study Overview

Age
4–18 years
Phase
Phase 3
Sponsor
Dyne Therapeutics
Therapeutic Approach
Exon Skipping
Variant Requirement
Ambulatory male with confirmed diagnosis of DMD and with a mutation in the dystrophin gene characterized by exon deletion amenable to exon 51 skipping.
Eligible Sex
Male
Ambulation
Ambulatory
Study Start (Actual)
2026-06
Primary Completion (Estimated)
2030-12
Study Completion (Estimated)
2032-10
Enrollment (Estimated)
90
Countries
United States

Study Requirements and Criteria

Steroid Use

Receiving a stable daily or weekend dosage of glucocorticoids for at least 24 weeks prior to randomization with the expectation of maintaining a stable dose during the Placebo-Controlled Period of the study (unless dose adjustment is required by weight change)

Inclusion Criteria

Rise From Floor (RFF) time must be < 10 seconds for both screening assessments.

Exclusion Criteria

  • Receipt of ongoing immunosuppressive therapy (other than glucocorticoids) within 12 weeks prior to randomization
  • Use of any pharmacologic treatment (other than glucocorticoids) that may have an effect on muscle strength or function within 12 weeks prior to randomization
  • Any change in prophylaxis/treatment for congestive heart failure (CHF) within 12 weeks prior to randomization
  • Receipt of eteplirsen within 1 week prior to randomization
  • Receipt of alternative exon-skipping or dystrophin-modifying therapy or zeleciment rostudirsen within 24 weeks prior to randomization
  • Receipt of givinostat within 12 weeks prior to randomization
  • Receipt of gene therapy at any time
  • Note: Other inclusion or exclusion criteria may apply

Contact Information

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This information is provided for educational purposes only. Always consult the study investigators before making medical decisions.