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J Neurol Neurosurg Psychiatry. 2009 Nov;80(11):1286-8. doi: 10.1136/jnnp.2008.163261.

A novel TARDBP mutation in an Australian amyotrophic lateral sclerosis kindred.

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  • 1Northcott Neuroscience Laboratory, ANZAC Research Institute, Concord Hospital NSW 2139, Australia.

Abstract

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder that causes loss of motor neurons. A pathological hallmark of ALS is the presence of ubiquitinated TAR DNA binding protein (TDP-43) inclusions in the cytoplasm of affected cells. Rare pathogenic mutations within the gene TARDBP that encode TDP-43 were recently reported in ALS but their functional consequences are unknown. To further investigate the pathogenic role of TDP-43 in ALS, a mutation analysis of TARDBP was performed in an Australian cohort of 74 sporadic and 30 familial ALS cases. A novel familial ALS mutation in TDP-43 was identified that substitutes a highly conserved residue (G294V) and is predicted to disrupt the glycine rich domain in the C terminus, a region that plays a role in RNA binding and is required for the exon skipping activity of TDP-43.

PMID:
19864664
[PubMed - indexed for MEDLINE]
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