Long-term, Extension Study of DS-5141b in Patients With Duchenne Muscular Dystrophy

A Phase II, Long-term, Extension Study of DS-5141b in Patients With Duchenne Muscular Dystrophy

This is a multicenter, open-label, long-term, extension, phase 2 study to evaluate the safety and efficacy of long-term treatment with DS-5141b in patients with DMD who have completed DS5141-A-J101.

Inclusion Criteria:

• Has competed a study of DS5141-A-J101

Exclusion Criteria:

• Significant safety issues in a study of DS5141-A-J101
• Patient who does not consent to use appropriate contraception
• Patient not appropriate to participant in the study as determined by the Investigator