1. Investigation of GRIN2A in common epilepsy phenotypes
- Author
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Lal, Dennis, Steinbrücker, Sandra, Schubert, Julian, Sander, Thomas, Becker, Felicitas, Weber, Yvonne, Lerche, Holger, Thiele, Holger, Krause, Roland, Lehesjoki, Anna Elina, Nürnberg, Peter, Palotie, Aarno, Neubauer, Bernd A., Muhle, Hiltrud, Stephani, Ulrich, Helbig, Ingo, Becker, Albert J., Schoch, Susanne, Hansen, Jörg, Dorn, Thomas, Hohl, Christin, Lüscher, Nicole, von Spiczak, Sarah, Lemke, Johannes R., Zimprich, Fritz, Feucht, Martha, Suls, Arvid, Weckhuysen, Sarah, Claes, Lieve, Deprez, Liesbet, Smets, Katrien, Dyck, Tine Van, Deconinck, Tine, De Jonghe, Peter, Møller, Rikke S., Klitten, Laura L., Hjalgrim, Helle, Campus, Kiel, Ostertag, Philipp, Trucks, Hol ger, Elger, Christian E., Kleefuß-Lie, Ailing A., Kunz, Wolfram S., Surges, Rainer, Gaus, Verena, Janz, Dieter, Schmitz, Bettina, Klein, Karl Martin, Reif, Philipp S., Oertel, Wolfgang H., Hamer, Hajo M., Rosenow, Felix, Kapser, Claudia, Schankin, Christoph J., Koeleman, Bobby P C, de Kovel, Carolien, Lindhout, Dick, Reinthaler, Eva M., Steinboeck, Hannelore, Neo-phytou, Birgit, Geldner, Julia, Gruber-Sedlmayr, Ursula, Haberlandt, Edda, Ronen, Gabriel M., Altmueller, Janine, Nuernberg, Peter, Neubauer, Bernd, Sirén, Auli, Neuroscience Center, Research Programs Unit, Department of Medical and Clinical Genetics, Anna-Elina Lehesjoki / Principal Investigator, Research Programme for Molecular Neurology, Medicum, Institute for Molecular Medicine Finland, Aarno Palotie / Principal Investigator, Genomics of Neurological and Neuropsychiatric Disorders, Suls, Arvid, Weckhuysen, Sarah, Claes, Godelieve, Deprez, Liesbet, Smets, Katrien, Van Dyck, Tine, Deconinck, Tine, De Jonghe, Peter, Epicure Consortium, and EuroEPINOMICS-CoGIE Consortium
- Subjects
Pathology ,Idiopathic generalized epilepsy ,DEPDC5 ,Genotyping Techniques ,CHILDHOOD ,Bioinformatics ,GRIN2A ,3124 Neurology and psychiatry ,Cohort Studies ,Epilepsy ,0302 clinical medicine ,Databases, Genetic ,Medicine ,Copy-number variation ,TERMINOLOGY ,Non-U.S. Gov't ,Temporal lobe epilepsy ,FOCAL EPILEPSIES ,Exome sequencing ,Sanger sequencing ,0303 health sciences ,Research Support, Non-U.S. Gov't ,Phenotype ,Neurology ,symbols ,Epilepsy, Generalized ,medicine.medical_specialty ,DNA Copy Number Variations ,DISORDERS ,Clinical Neurology ,Research Support ,Receptors, N-Methyl-D-Aspartate ,CLASSIFICATION ,Juvenile Absence Epilepsy ,03 medical and health sciences ,symbols.namesake ,Journal Article ,Humans ,Biology ,030304 developmental biology ,business.industry ,MUTATIONS ,Copy number variation ,3112 Neurosciences ,INCLUDING GRIN2A ,medicine.disease ,DELETIONS ,Epilepsy, Absence ,Epilepsy, Temporal Lobe ,Epilepsy syndromes ,Mutation ,SEIZURES ,Neurology (clinical) ,Human medicine ,business ,030217 neurology & neurosurgery - Abstract
Recently, mutations and deletions in the GRIN2A gene have been identified to predispose to benign and severe idiopathic focal epilepsies (IFE), revealing a higher incidence of GRIN2A alterations among the more severe phenotypes. This study aimed to explore the phenotypic boundaries of GRIN2A mutations by investigating patients with the two most common epilepsy syndromes: (i) idiopathic generalized epilepsy (IGE) and (ii) temporal lobe epilepsy (TLE). Whole exome sequencing data of 238 patients with IGE as well as Sanger sequencing of 84 patients with TLE were evaluated for GRIN2A sequence alterations. Two additional independent cohorts comprising 1469 IGE and 330 TLE patients were screened for structural deletions (>40 kb) involving GRIN2A. Apart from a presumably benign, non-segregating variant in a patient with juvenile absence epilepsy, neither mutations nor deletions were detected in either cohort. These findings suggest that mutations in GRIN2A preferentially are involved in genetic variance of pediatric IFE and do not contribute significantly to either adult focal epilepsies as TLE or generalized epilepsies. (C) 2015 Elsevier B.V. All rights reserved.
- Published
- 2015