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Association Of Type Iv Spinal Muscular Atrophy (sma) With Myoclonic Epilepsy Within A Single Family
Author: Damith S Liyanage, Lakmini S Pathberiya, Inuka K Gooneratne, Kumarangie K Vithanage And Ranjanie Gamage
Publisher: Derivative Works
4 pages
One time payment: €0.00
Required subscription: Free
Type of publication: Article
ISBN/ISSN: 1755-7682
DOI: 10.1186/1755-7682-7-42
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Background: Spinal muscular atrophies (SMAs) are a group of disorders characterized by degeneration of the anterior horn cells in the spinal cord and motor nuclei in the lower brainstem. It is transmitted by autosomal recessive inheritance and most of these conditions are linked to SMN gene. Even if the clinical picture is mainly dominated by the diffuse muscular atrophy, some patients can also show atypical clinical features such as myoclonic epilepsy (“SMA plus”), which may be related to other genes. In particular, the association of SMA and progressive myoclonic epilepsy (PME) has been previously described.Case presentationWe present a case of two brothers with late onset SMA associated with a unique form of non progressive myoclonic epilepsy without cognitive impairment or ataxia. They had identical clinical and electrophysiological features. Conclusions: The association of SMA with myoclonic epilepsy may constitute a separate and genetically independent syndrome with unique clinical and electrophysiological findings. Collection of similar cases with genetic studies is needed to define the phenotype clearly and to identify new genes and molecular pathogenetic mechanisms involved in this condition.

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