DMD is caused by mutation in the dystrophin gene (DMD, MIM 300377) and belongs to X-linked disorders (Bakker et al. 1987; Oshima et al. 2009; Tuffery-Giraud et al. 2009; White et al. 2006; White and den Dunnen 2006). The gene discussed is DMD; the disease is Duchenne muscular dystrophy.