About The Medical Condition Type I Spinal Muscular Atrophy

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Type I Spinal Muscular Atrophy

Type I Spinal Muscular Atrophy Medical Condition Defined & Explained
Type I Spinal Muscular Atrophy Medical Condition

What's The Definition Of The Medical Condition Type I Spinal Muscular Atrophy?

A group of recessively inherited diseases that feature progressive muscular atrophy and hypotonia. They are classified as type I (Werdnig-Hoffman disease), type II (intermediate form), and type III (Kugelberg-Welander disease). Type I is fatal in infancy, type II has a late infantile onset and is associated with survival into the second or third decade. Type III has its onset in childhood, and is slowly progressive. (J Med Genet 1996 Apr:33(4):281-3)

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