A Long-term Follow-up Study of Participants Who Received Delandistrogene Moxeparvovec (SRP-9001) in a Previous Clinical Study

The purpose of this study is to provide a single clinical study with a uniform approach to monitoring long-term safety and efficacy in participants who received delandistrogene moxeparvovec in a previous clinical study. No study drug will be administered as part of this study. Pre-infusion baseline will be defined as the timepoint just prior to infusion of delandistrogene moxeparvovec from a previous clinical study. Each participant will be followed for a minimum of 5 years post-infusion of delandistrogene moxeparvovec from a previous clinical study. The duration of participation in this study is dependent on the length of follow-up the participant completed post-infusion of delandistrogene moxeparvovec from a previous clinical study.