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Genome-wide association analyses of child genotype effects and parent-of-origin effects in specific language impairment

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Nudel_GBB_2014.pdf (1001.Kb)
Date
04/2014
Author
Nudel, Ron
Simpson, Nuala H
Baird, Gillian
O'Hare, Anne
Conti-Ramsden, Gina
Bolton, Patrick F
Hennessy, Elizabeth R
Ring, Susan M
Smith, George Davey
Francks, Clyde
Paracchini, Silvia
Monaco, Anthony P
Fisher, Simon E
Newbury, Dianne F
The SLI Consortium
Funder
The Royal Society
Grant ID
UF100463
Keywords
ALSPAC
GWAS
Imprinting
Neurodevelopmental disorder
Specific language impairment
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
QH426 Genetics
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Abstract
Specific language impairment (SLI) is a neurodevelopmental disorder that affects linguistic abilities when development is otherwise normal. We report the results of a genome-wide association study of SLI which included parent-of-origin effects and child genotype effects and used 278 families of language-impaired children. The child genotype effects analysis did not identify significant associations. We found genome-wide significant paternal parent-of-origin effects on chromosome 14q12 (P = 3.74 × 10-8 ) and suggestive maternal parent-of-origin-effects on chromosome 5p13 (P = 1.16 × 10-7 ). A subsequent targeted association of six single-nucleotide-polymorphisms (SNPs) on chromosome 5 in 313 language-impaired individuals from the ALSPAC cohort replicated the maternal effects, albeit in the opposite direction (P = 0.001); as fathers' genotypes were not available in the ALSPAC study, the replication analysis did not include paternal parent-of-origin effects. The paternally-associated SNP on chromosome 14 yields a non-synonymous coding change within the NOP9 gene. This gene encodes an RNA-binding protein that has been reported to be significantly dysregulated in individuals with schizophrenia. The region of maternal association on chromosome 5 falls between the PTGER4 and DAB2 genes, in a region previously implicated in autism and ADHD. The top SNP in this association locus is a potential expression QTL of ARHGEF19 (also called WGEF) on chromosome 1. Members of this protein family have been implicated in intellectual disability. In sum, this study implicates parent-of-origin effects in language impairment, and adds an interesting new dimension to the emerging picture of shared genetic etiology across various neurodevelopmental disorders.
Citation
Nudel , R , Simpson , N H , Baird , G , O'Hare , A , Conti-Ramsden , G , Bolton , P F , Hennessy , E R , Ring , S M , Smith , G D , Francks , C , Paracchini , S , Monaco , A P , Fisher , S E , Newbury , D F & The SLI Consortium 2014 , ' Genome-wide association analyses of child genotype effects and parent-of-origin effects in specific language impairment ' , Genes, Brain and Behavior , vol. 13 , no. 4 , pp. 418–429 . https://doi.org/10.1111/gbb.12127
Publication
Genes, Brain and Behavior
Status
Peer reviewed
DOI
https://doi.org/10.1111/gbb.12127
ISSN
1601-1848
Type
Journal article
Rights
© 2014 The Authors. Genes, Brain and Behavior published by International Behavioural and Neural Genetics Society and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Description
Dianne Newbury is an MRC Career Development Fellow and a Junior Research Fellow at St John’s College, University of Oxford. The work of the Newbury lab is funded by the Medical Research Council [G1000569/1 and MR/J003719/1]. Ron Nudel is funded by a University of Oxford Nuffield Department of Medicine Prize Studentship. The genotyping of samples was funded by the Max Planck Society. Silvia Paracchini is a Royal Society University Research Fellow. The analyses of the ALSPAC cohort were supported by a grant from the Medical Research Council [G0800523/86473]. The collection of the SLIC samples was supported by the Wellcome Trust (060774 and 076566). Patrick Bolton is supported by a National Institute of Health Research (UK) Senior Investigator award and the Biomedical Research Centre in Mental Health at the South London & Maudsley NHS Trust Hospital, London. The work of the Wellcome Trust Centre in Oxford is supported by the Wellcome Trust [090532/Z/09/Z].
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/7888

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