Werdning-Hoffman disease (SMA1) Spinal muscular atrophy type II (SMA2) Kugeleberg-Welander disease (SMA3) Spinal muscular atrophy type IV (SMA4) X-linked SMA (SMAX) SMA proximal adult autosomal dominant (SMAPAD) SMA, lower extremity-predominant, autosomal dominant (SMALED) Spinal muscular atrophy, infantile, James type (SMAJI)
Description
Spinal muscular atrophy (SMA) is a neuromuscular disease characterized by degeneration of motor neurons, resulting in progressive muscle atrophy and paralysis. The most common form of SMA is caused by mutations of the SMN gene, that encodes the SMN protein, which regulates snRNP assembly. Four types of SMA are recognized depending on the age of onset and the severity of the disease: type I (Werdning-Hoffman), type II (intermediate), type III (Kugeleberg-Welander) and type IV (adult form). Other forms of spinal muscular atrophy are caused by mutation of other genes, some known and others not yet defined.
Category
Neurodegenerative disease
Brite
Human diseases in ICD-11 classification [BR:br08403]
08 Diseases of the nervous system
Motor neuron diseases or related disorders
8B61 Spinal muscular atrophy
H00455 Spinal muscular atrophy
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06515 Regulation of kinetochore-microtubule interactions
H00455 Spinal muscular atrophy
nt06541 Cytoskeleton in neurons
H00455 Spinal muscular atrophy
Network
nt06515 Regulation of kinetochore-microtubule interactions nt06541 Cytoskeleton in neurons
Cusco I, Lopez E, Soler-Botija C, Jesus Barcelo M, Baiget M, Tizzano EF
Title
A genetic and phenotypic analysis in Spanish spinal muscular atrophy patients with c.399_402del AGAG, the most frequently found subtle mutation in the SMN1 gene.
Harms MB, Ori-McKenney KM, Scoto M, Tuck EP, Bell S, Ma D, Masi S, Allred P, Al-Lozi M, Reilly MM, Miller LJ, Jani-Acsadi A, Pestronk A, Shy ME, Muntoni F, Vallee RB, Baloh RH
Title
Mutations in the tail domain of DYNC1H1 cause dominant spinal muscular atrophy.