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Rare gene deletions in genetic generalized and Rolandic epilepsies.

Authors :
Jabbari K
Bobbili DR
Lal D
Reinthaler EM
Schubert J
Wolking S
Sinha V
Motameny S
Thiele H
Kawalia A
Altmüller J
Toliat MR
Kraaij R
van Rooij J
Uitterlinden AG
Ikram MA
Zara F
Lehesjoki AE
Krause R
Zimprich F
Sander T
Neubauer BA
May P
Lerche H
Nürnberg P
Source :
PloS one [PLoS One] 2018 Aug 27; Vol. 13 (8), pp. e0202022. Date of Electronic Publication: 2018 Aug 27 (Print Publication: 2018).
Publication Year :
2018

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.<br />Competing Interests: The authors have declared that no competing interests exist.

Details

Language :
English
ISSN :
1932-6203
Volume :
13
Issue :
8
Database :
MEDLINE
Journal :
PloS one
Publication Type :
Academic Journal
Accession number :
30148849
Full Text :
https://doi.org/10.1371/journal.pone.0202022