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A genome-wide association meta-analysis of attention-deficit/hyperactivity disorder symptoms in population-based pediatric cohorts

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dc.contributor.author Middeldorp, Christel M.
dc.contributor.author Vilor Tejedor, Natàlia, 1988-
dc.contributor.author Guxens Junyent, Mònica
dc.contributor.author Sunyer Deu, Jordi
dc.contributor.author Boomsma, Dorret I.
dc.date.accessioned 2019-07-04T10:32:26Z
dc.date.available 2019-07-04T10:32:26Z
dc.date.issued 2016
dc.identifier.citation Middeldorp CM, Hammerschlag AR, Ouwens KG, Groen-Blokhuis MM, Pourcain BS, Greven CU et al. A genome-wide association meta-analysis of attention-deficit/hyperactivity disorder symptoms in population-based pediatric cohorts. J Am Acad Child Adolesc Psychiatry. 2016 Oct;55(10):896-905. DOI: 10.1016/j.jaac.2016.05.025
dc.identifier.issn 0890-8567
dc.identifier.uri http://hdl.handle.net/10230/41940
dc.description.abstract OBJECTIVE: The aims of this study were to elucidate the influence of common genetic variants on childhood attention-deficit/hyperactivity disorder (ADHD) symptoms, to identify genetic variants that explain its high heritability, and to investigate the genetic overlap of ADHD symptom scores with ADHD diagnosis. METHOD: Within the EArly Genetics and Lifecourse Epidemiology (EAGLE) consortium, genome-wide single nucleotide polymorphisms (SNPs) and ADHD symptom scores were available for 17,666 children (<13 years of age) from nine population-based cohorts. SNP-based heritability was estimated in data from the three largest cohorts. Meta-analysis based on genome-wide association (GWA) analyses with SNPs was followed by gene-based association tests, and the overlap in results with a meta-analysis in the Psychiatric Genomics Consortium (PGC) case-control ADHD study was investigated. RESULTS: SNP-based heritability ranged from 5% to 34%, indicating that variation in common genetic variants influences ADHD symptom scores. The meta-analysis did not detect genome-wide significant SNPs, but three genes, lying close to each other with SNPs in high linkage disequilibrium (LD), showed a gene-wide significant association (p values between 1.46 × 10(-6) and 2.66 × 10(-6)). One gene, WASL, is involved in neuronal development. Both SNP- and gene-based analyses indicated overlap with the PGC meta-analysis results with the genetic correlation estimated at 0.96. CONCLUSION: The SNP-based heritability for ADHD symptom scores indicates a polygenic architecture, and genes involved in neurite outgrowth are possibly involved. Continuous and dichotomous measures of ADHD appear to assess a genetically common phenotype. A next step is to combine data from population-based and case-control cohorts in genetic association studies to increase sample size and to improve statistical power for identifying genetic variants.
dc.description.sponsorship This study was funded by grants from the Spanish Instituto de Salud Carlos III (CB06/02/0041, G03/176, FIS PI041436, PI081151, PI041705, PI061756, PI091958, and PS09/00432, FIS-FEDER 03/1615, 04/1509, 04/1112, 04/1931 , 05/1079, 05/1052, 06/1213, 07/0314, 09/02647, 11/01007, 11/02591, 11/02038, 13/1944, 13/2032, CP11/0178 and MS13/00054), Spanish Ministry of Science and Innovation (SAF2008-00357), European Commission (ENGAGE project and grant agreement HEALTH-F4-2007-201413, HEALTH.2010.2.4.5-1, FP7- ENV-2011 cod 282957), Fundació La Marató de TV3, Generalitat de Catalunya-CIRIT 1999SGR 00241, and Conselleria de Sanitat Generalitat Valenciana. N. Vilor-Tejedor thanks the Agència de Gestió d’Ajuts Universitaris i de Recerca - Generalitat de Catalunya for her pre-doctoral grant (2015 FI_B 00636)
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartof Journal of the American Academy of Child and Adolescent Psychiatry. 2016 Oct;55(10):896-905
dc.rights © Elsevier http://dx.doi.org/10.1016/j.jaac.2016.05.025
dc.subject.other Trastorn per dèficit d'atenció amb hiperactivitat
dc.subject.other Genètica
dc.title A genome-wide association meta-analysis of attention-deficit/hyperactivity disorder symptoms in population-based pediatric cohorts
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1016/j.jaac.2016.05.025
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/SAF2008-00357
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/282957
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/acceptedVersion


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