By Jessie Bronski Faculty Mentor: Ginny Morriss Abstract Myotonic dystrophy 1 (DM1) is a multisystemic disease that affects a variety of organ systems characterized by muscle weakness and wasting. DM1 is caused by expanded CTG repeats in the 3’ untranslated region of the dystrophia myotonica protein kinase (DMPK) gene. Nonaffected individuals carry fewer than 35…