This study will evaluate the safety and tolerability of a new steroid-like medication called vamorolone in boys with DMD ages ≥ 4 years and < 7 years. Enrolled participants will take the study medication for 14 days followed by a 14 day follow-up period. The potential effectiveness of vamorolone in treating DMD will also be explored.
The purpose of this study is to determine whether a new medication called vamorolone is safe and well-tolerated by boys with Duchenne muscular dystrophy (DMD) ages ≥ 4 and < 7 years old.