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Rare gene deletions in genetic generalized and Rolandic epilepsies

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Item Type:Article
Title:Rare gene deletions in genetic generalized and Rolandic epilepsies
Creators Name:Jabbari, K. and Bobbili, D.R. and Lal, D. and Reinthaler, E.M. and Schubert, J. and Wolking, S. and Sinha, V. and Motameny, S. and Thiele, H. and Kawalia, A. and Altmüller, J. and Toliat, M.R. and Kraaij, R. and van Rooij, J. and Uitterlinden, A.G. and Ikram, M.A. and Zara, F. and Lehesjoki, A.E. and Krause, R. and Zimprich, F. and Sander, T. and Neubauer, B.A. and May, P. and Lerche, H. and Nürnberg, P.
Abstract:Genetic Generalized Epilepsy (GGE) and benign epilepsy with centro-temporal spikes or Rolandic Epilepsy (RE) are common forms of genetic epilepsies. Rare copy number variants have been recognized as important risk factors in brain disorders. We performed a systematic survey of rare deletions affecting protein-coding genes derived from exome data of patients with common forms of genetic epilepsies. We analysed exomes from 390 European patients (196 GGE and 194 RE) and 572 population controls to identify low-frequency genic deletions. We found that 75 (32 GGE and 43 RE) patients out of 390, i.e. ~19%, carried rare genic deletions. In particular, large deletions (>400 kb) represent a higher burden in both GGE and RE syndromes as compared to controls. The detected low-frequency deletions (1) share genes with brain-expressed exons that are under negative selection, (2) overlap with known autism and epilepsy-associated candidate genes, (3) are enriched for CNV intolerant genes recorded by the Exome Aggregation Consortium (ExAC) and (4) coincide with likely disruptive de novo mutations from the NPdenovo database. Employing several knowledge databases, we discuss the most prominent epilepsy candidate genes and their protein-protein networks for GGE and RE.
Keywords:Autistic Disorder, Chromosome Deletion, Comparative Genomic Hybridization, DNA Copy Number Variations, Generalized Epilepsy, Rolandic Epilepsy, Exome, Gene Deletion, Genetic Association Studies, Genetic Predisposition to Disease, Mutation, Protein Interaction Mapping, Protein Interaction Maps, Reproducibility of Results, Workflow
Source:PLoS ONE
Publisher:Public Library of Science
Page Range:e0202022
Date:27 August 2018
Official Publication:https://doi.org/10.1371/journal.pone.0202022
PubMed:View item in PubMed

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