Spinal Muscular Atrophy

Abstract excerpt

The spinal muscular atrophies are a group of mostly inherited disorders selectively affecting the lower motor neuron. There is a wide degree of clinical and genetic heterogeneity that must be taken into account when giving prognostic information. Autosomal recessive childhood proximal SMA is the commonest form and is due to mutations in a gene encoding a novel protein, SMN, that appears to play a critical role in...

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