In BMD muscle, the expression range was 4–84.5% of normal mean (mean 32%, median 26%; 1089 fmol/mg protein) and in DMD muscle, the expression range was 0.4–24.1% of normal mean (mean 5%, median 2%; 186 fmol/mg protein), with no dystrophin quantifiable in 7 of 20 DMD samples. The gene discussed is DMD; the disease is Duchenne muscular dystrophy.