Myotonic dystrophy type 1: A comparison between the adult‐ and late‐onset subtype

Although the extent of muscle weakness and organ complications has not been well studied in patients with late‐onset myotonic dystrophy type 1 (DM1), adult‐onset DM1 is associated with severe muscle involvement and possible life‐threatening cardiac and respiratory complications. In this study we aimed to compare the clinical phenotype of adult‐onset vs late‐onset DM1, focusing on the prevalence of cardiac, respiratory, and muscular involvement.

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