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Elia, J; Glessner, J T; Wang, K; Takahashi, N; Shtir, C J; Hadley, D; Sleiman, P M A; Zhang, H; Kim, C E; Robison, R; Lyon, G J; Flory, J H; Bradfield, J P; Imielinski, M; Hou, C; Frackelton, E C; Chiavacci, R M; Sakurai, T; Rabin, C; Middleton, F A; Thomas, K A; Garris, M; Mentch, F; Freitag, C M; Steinhausen, H C; Todorov, A A; Reif, A; Rothenberger, A; Franke, B; Mick, E O; Roeyers, H; Buitelaar, J; Lesch, K P; Banaschewski, T; Ebstein, R P; Mulas, F; Oades, R D; Sergeant, J; Sonuga-Barke, E; Renner, T J; Romanos, M; Romanos, J; Warnke, A; Walitza, S; Meyer, J; Pálmason, H; Seitz, C; Loo, S K; Smalley, S L; Biederman, J; Kent, L; Asherson, P; Anney, R J L; Gaynor, J W; Shaw, P; Devoto, M; White, P S; Grant, S F A; Buxbaum, J D; Rapoport, J L; Williams, N M; Nelson, S F; Faraone, S V; Hakonarson, H (2011). Genome-wide copy number variation study associates metabotropic glutamate receptor gene networks with attention deficit hyperactivity disorder. Nature Genetics, 44(1):78-84.

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Abstract

Attention deficit hyperactivity disorder (ADHD) is a common, heritable neuropsychiatric disorder of unknown etiology. We performed a whole-genome copy number variation (CNV) study on 1,013 cases with ADHD and 4,105 healthy children of European ancestry using 550,000 SNPs. We evaluated statistically significant findings in multiple independent cohorts, with a total of 2,493 cases with ADHD and 9,222 controls of European ancestry, using matched platforms. CNVs affecting metabotropic glutamate receptor genes were enriched across all cohorts (P = 2.1 × 10(-9)). We saw GRM5 (encoding glutamate receptor, metabotropic 5) deletions in ten cases and one control (P = 1.36 × 10(-6)). We saw GRM7 deletions in six cases, and we saw GRM8 deletions in eight cases and no controls. GRM1 was duplicated in eight cases. We experimentally validated the observed variants using quantitative RT-PCR. A gene network analysis showed that genes interacting with the genes in the GRM family are enriched for CNVs in ∼10% of the cases (P = 4.38 × 10(-10)) after correction for occurrence in the controls. We identified rare recurrent CNVs affecting glutamatergic neurotransmission genes that were overrepresented in multiple ADHD cohorts.

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61 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Child and Adolescent Psychiatry
DDC:610 Medicine & health
Language:English
Date:December 2011
Deposited On:15 Jan 2012 20:16
Last Modified:28 Nov 2013 00:26
Publisher:Nature Publishing Group
ISSN:1061-4036
Publisher DOI:10.1038/ng.1013
PubMed ID:22138692

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