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Neuromuscul Disord. 2012 May;22(5):394-400. doi: 10.1016/j.nmd.2011.11.006. Epub 2012 Jan 20.

Exome sequencing identifies KIAA1377 and C5orf42 as susceptibility genes for monomelic amyotrophy.

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  • 1Department of Neurology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea. lim_y_m@hanmail.net

Abstract

Precise topographic localization, predominance in males mostly of Asian origin, and existence of some familial cases suggest a genetic background for monomelic amyotrophy. To identify susceptibility genes for monomelic amyotrophy, we performed whole-exome sequencing of four unrelated patients with monomelic amyotrophy and detected a total of 45 novel nonsynonymous single-nucleotide polymorphisms as unique variants to monomelic amyotrophy compared to control exomes. Genetic association analysis showed significant association with monomelic amyotrophy in the Gly668Ser variant of the KIAA1377 gene (odds ratio=4.62, P-value=0.0040) and the Pro1794Leu variant of the C5orf42 gene (odds ratio=4.63, P-value=0.0040). Moreover, the combination of two variants increased the risk of monomelic amyotrophy (P=1.4×10(-5), OR=61.69, 95% confidence interval=9.62-394.94, in case of combination of two heterozygotes). These data suggest that KIAA1377 and C5orf42 synergistically play a role as susceptibility genes for monomelic amyotrophy.

Copyright © 2011 Elsevier B.V. All rights reserved.

PMID:
22264561
[PubMed - indexed for MEDLINE]
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