: MeSH: Spinal Muscular Atrophies of Childhood

Nervous System Diseases > Neurodegenerative Diseases > Motor Neuron Disease > Muscular Atrophy, Spinal > Spinal Muscular Atrophies of Childhood

Nervous System Diseases > Neuromuscular Diseases > Motor Neuron Disease > Muscular Atrophy, Spinal > Spinal Muscular Atrophies of Childhood

Nervous System Diseases > Central Nervous System Diseases > Spinal Cord Diseases > Muscular Atrophy, Spinal > Spinal Muscular Atrophies of Childhood

Congenital, Hereditary, and Neonatal Diseases and Abnormalities > Genetic Diseases, Inborn > Heredodegenerative Disorders, Nervous System > Spinal Muscular Atrophies of Childhood

Nervous System Diseases > Neurodegenerative Diseases > Heredodegenerative Disorders, Nervous System > Spinal Muscular Atrophies of Childhood

Spinal Muscular Atrophies of Childhood

A group of recessive 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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