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BMN 351 Exon 51 Skipping Therapy for Duchenne Muscular Dystrophy: Phase 2 Extension Study

Enrolling by InvitationPhase 2Exon Skipping
Study Overview
- Age
- 4 years and older
- Phase
- Phase 2
- Sponsor
- BioMarin Pharmaceutical
- Therapeutic Approach
- Exon Skipping
- Variant Requirement
- Participants must have completed 351-201 without permanent discontinuation of the investigational medicinal product (IMP) or withdrawal from the study.
- Eligible Sex
- Male
- Ambulation
- Ambulatory
- Study Start (Actual)
- 2026-04
- Primary Completion (Estimated)
- 2031-12
- Study Completion (Estimated)
- 2031-12
- Enrollment (Estimated)
- 18
- Countries
- ItalyNetherlandsSpainTurkiyeUnited Kingdom
Study Requirements and Criteria
Steroid Use
Currently receiving treatment with oral corticosteroids, on a stable dose regimen during 351-201, and must remain on a consistent dose regimen throughout 351-202 or 351-203 except for modifications to accommodate changes in weight. Transition to the equivalent dose of vamorolone is permitted in 351-202 where approved in participating countries.
Inclusion Criteria
- Willing and able to adhere to the study visit schedule and other protocol requirements
- Willing to use contraception (sexually mature males) throughout the study and for 90 days after the final dose, if sexually active
- Contraceptive use by males should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
- Willing and able to provide written assent (if required by local regulations or the IRB/IEC) after the nature of the study has been explained and prior to performance of any research-related procedure
- Willing and able to provide written, signed informed consent as parent or guardian after the nature of the study has been explained and prior to performance of any research-related procedure
Exclusion Criteria
- Have known coagulation disorder
- Are taking any prohibited medications
- any approved exon skipping therapy within 12 weeks prior to baseline or with any gene therapy for the treatment of DMD at any time
- anti-coagulants, anti-thrombotics, or anti-platelet agents
- immunosuppressants
Contact Information
This section provides contact details for people who can answer questions about joining this study
Not yet provided
Clinical Trial Registry
NCT ID
NCT07573631This information is provided for educational purposes only. Always consult the study investigators before making medical decisions.