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about DMD

Duchenne Muscular Dystrophy


Duchenne muscular dystrophy (DMD) is a genetic disorder characterized by progressive muscle degeneration and weakness. DMD is caused by an absence of dystrophin, a protein that helps keep muscle cells intact. Symptom onset is in early childhood, usually between ages 3 and 5. The disease primarily affects boys, but in rare cases it can affect girls. It is one of nine types of muscular dystrophy and affects 1 in every 3,500 male births worldwide.

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