Recent Developments and Industry Interest in Gene Therapy for Duchenne Muscular Dystrophy Introduction Duchenne muscular dystrophy (DMD) is an X-linked genetic disorder that causes progressive muscle degeneration. This condition is caused by mutations in the DMD gene, which encodes a crucial protein for muscle stability. Symptoms usually appear between ages 2 and 5, leading to muscle weakness and, eventually, respiratory or cardiac failure. While antisense oligonucleotides have been approved to …