A Study to Assess Safety/Tolerability, pk, Effects on Histology, Clinical Parameters of Givinostat in Children With DMD

Givinostat, oral suspension 10 mg/mL or oral capsules 50 mg, administered orally under fed conditions at the dose of 25 mg BID, 37.5 mg BID, and 50 mg BID during Part 1 for two weeks, and 25 mg BID and 37.5 mg BID during Part 2 for 12 months. Givinostat, oral suspension 10 mg/mL, administered orally under fed conditions at the dose of 25 mg BID or 37.5 mg BID during Extension 1, and modified as per patient's weight during Extensions 2 and 3 (up to 52 months).