" /> Spinal Muscular Atrophy Type 3 - CISMeF





Preferred Label : Spinal Muscular Atrophy Type 3;

NCIt synonyms : Spinal Muscular Atrophy III; Juvenile Spinal Muscular Atrophy; Kugelberg-Welander Disease; Kugelberg-Welander Syndrome;

NCIt definition : A rare, autosomal recessive inherited disorder caused by mutations in the SMN1 gene. It is characterized by progressive degeneration and loss of the anterior horn cells in the spinal cord and brain stem. It is manifested with hypotonia and muscle weakness, usually in late childhood or adolescence. Affected individuals can stand and walk but walking and climbing stairs becomes progressively difficult.;

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03/05/2025


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