The CINRG Becker Natural History Study: Baseline characteristics

We performed an observational, natural history study of males with in‐frame dystrophin gene deletions causing Becker muscular dystrophy (BMD). A prospective natural history study collected longitudinal medical, strength, and timed function assessments. Eighty‐three participants with genetically confirmed BMD were enrolled (age range 5.6–75.4 years). Lower extremity function and the percentage of participants who retained ambulation declined...