The gene mutated in this disease
 has 79 exons, and patients exhibit pseudohypertrophy and eventual respiratory failure.
One sign of this disease is patients' use of the Gowers maneuver. A recent therapy for this disease
 involves oligonucleotide-mediated exon-skipping. A similar condition caused by a less-damaging mutation
 in the same gene as this disease is named for Becker. Blood levels of creatine kinase are very high in this
 disease, which also causes dilated cardiomyopathy without heart failure. The gene mutated in this disease
 has 79 exons, and patients exhibit pseudohypertrophy and eventual respiratory failure. The gene central to
 this disease, dystrophin, is located on the X-chromosome, and its mutation leads to wasting and loss of the
 ability to walk. For 10 points, name this X-linked genetic disorder which causes muscle wasting.
One sign of this disease is patients' use of the Gowers maneuver.
Duchenne {Muscular Dystrophy} or {DMD}