γ-Sarcoglycan is a dystrophin-associated protein, and loss of function mutations in the SGCG gene produces a clinical picture similar to what is seen in Duchenne muscular dystrophy (DMD) (Ben Jelloun-Dellagi et al., 1990; Matsumura et al., 1992). The gene discussed is SGCG; the disease is Duchenne muscular dystrophy.