PTC Therapeutics, Inc. (NASDAQ: PTCT) today announced results from a real-world study of patients with Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) who switched from prednisone to EMFLAZA® (deflazacort) following the FDA approval. The primary reason the majority of patients chose to switch to EMFLAZA was a desire to delay disease progression to improve the benefit and tolerability. During the 6-months average follow-up after switching, physician-reported outcomes were consistent with EMFLAZA addressing the primary reasons for switching. Data were presented at the 2021 Muscular Dystrophy Association (MDA) Virtual Clinical and Scientific Conference.