Overview
This is a Phase 1/2 study of Multiple-Ascending Dose (MAD) levels for 12 weeks of treatment followed by 24 weeks of open-label treatment with a selected dose of NS-050/NCNP-03 administered once weekly to ambulant boys with DMD, who have a DMD exon deletion amenable to exon 50 skipping.
Eligibility
Inclusion Criteria:
- Male ≥ 4 years and <15 years of age;
- Confirmed DMD exon deletion in the dystrophin gene that is amenable to skipping of exon 50 to restore the dystrophin mRNA reading frame;
- Able to walk independently without assistive devices;
- Able to complete the TTSTAND without assistance in <20 seconds;
- Stable dose of glucocorticoid for at least 3 months and the dose is expected to remain on a stable dose for the duration of the study.
Other inclusion criteria may apply.
Exclusion Criteria:
- Evidence of symptomatic cardiomyopathy;
- Current or previous treatment with anabolic steroids (e.g., oxendolone, oxandrolone) or products containing resveratrol or adenosine triphosphate within 3 months prior to first dose of study drug;
- Currently taking another investigational drug or has taken another investigational drug within 3 months prior to the first dose of study drug;
- Surgery within the 3 months prior to the first dose of study drug or planned during the study duration;
- Having taken any gene therapy.
Other exclusion criteria may apply.
