Abstract:
:Spinal muscular atrophy (SMA) is an autosomal recessive neurodegenerative disorder and a leading genetic cause of infantile mortality. SMA is caused by mutation or deletion of Survival Motor Neuron-1 (SMN1). The clinical features of the disease are caused by specific degeneration of alpha-motor neurons in the spinal cord, leading to muscle weakness, atrophy and, in the majority of cases, premature death. A highly homologous copy gene (SMN2) is retained in almost all SMA patients but fails to generate adequate levels of SMN protein due to its defective splicing pattern. The severity of the SMA phenotype is inversely correlated with SMN2 copy number and the level of full-length SMN protein produced by SMN2 ( approximately 10-15% compared with SMN1). The natural history of SMA has been altered over the past several decades, primarily through supportive care measures, but an effective treatment does not presently exist. However, the common genetic etiology and recent progress in pre-clinical models suggest that SMA is well-suited for the development of therapeutic regimens. We summarize recent advances in translational research that hold promise for the progression towards clinical trials.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Lorson CL,Rindt H,Shababi Mdoi
10.1093/hmg/ddq147subject
Has Abstractpub_date
2010-04-15 00:00:00pages
R111-8issue
R1eissn
0964-6906issn
1460-2083pii
ddq147journal_volume
19pub_type
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