Cited by 83Attention Deficit Hyperactivity DisorderGenetic Associations and EpidemiologyAutism Spectrum Disorder Research

Genome-wide analysis of attention deficit hyperactivity disorder in Norway

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Zayats, Tetyana, Athanasiu, Lavinia, Sonderby, Ida, Djurovic, Srdjan, Westlye, Lars T., Tamnes, Christian K., Fladby, Tormod, Aase, Heidi +7 more·2015·PLoS ONE

Abstract

BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is a highly heritable neuropsychiatric condition, but it has been difficult to identify genes underlying this disorder. This study aimed to explore genetics of ADHD in an ethnically homogeneous Norwegian population by means of a genome-wide association (GWA) analysis followed by examination of candidate loci. MATERIALS AND METHODS: Participants were recruited through Norwegian medical and birth registries as well as the general population. Presence of ADHD was defined according to DSM-IV criteria. Genotyping was performed using Illumina Human OmniExpress-12v1 microarrays. Statistical analyses were divided into several steps: (1) genome-wide association in the form of logistic regression in PLINK and follow-up pathway analyses performed in DAPPLE and INRICH softwares, (2) SNP-heritability calculated using genome-wide complex trait analysis (GCTA) tool, (3) gene-based association tests carried out in JAG software, and (4) evaluation of previously reported genome-wide signals and candidate genes of ADHD. RESULTS: In total, 1.358 individuals (478 cases and 880 controls) and 598.384 autosomal SNPs were subjected to GWA analysis. No single polymorphism reached genome-wide significance. The strongest signal was observed at rs9949006 in the ENSG00000263745 gene (OR=1.51, 95% CI 1.28-1.79, p=1.38E-06). Pathway analyses of the top SNPs implicated genes involved in the regulation of gene expression, cell adhesion and inflammation. Among previously identified ADHD candidate genes, prominent association signals were observed for SLC9A9 (rs1393072, OR=1.46, 95% CI = 1.21-1.77, p=9.95E-05) and TPH2 (rs17110690, OR = 1.38, 95% CI = 1.14-1.66, p=8.31E-04). CONCLUSION: This study confirms the complexity and heterogeneity of ADHD etiology. Taken together with previous findings, our results point to a spectrum of biological mechanisms underlying the symptoms of ADHD, providing targets for further genetic exploration of this complex disorder.

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  • Genetic studies have found associations between polymorphisms in inflammatory pathway genes and ADHD.

    “GWAS studies have identified associations between ADHD and the gene for IL-1RA (Segman et al., 2002) as well as genes involved in regulation of gene expression, cell adhesion, and inflammation (Zayats et al., 2015).”

    From Neuroinflammation as a risk factor for attention deficit hyperactivity disorder (2019) · cites this paper as Zayats et al., 2015

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  1. [71]Ning S, Zhao Z, Ye J, Wang P, Zhi H, Li R, et al LincSNP: a database of linking disease-associated SNPs to human large intergenic non-coding RNAs. BMC Bioinformatics. 2014; 15: 152 10.1186/1471-2105-15-152 24885522 PMC4038069 · DOI
  2. [83]Lee SH, Ripke S, Neale BM, Faraone SV, Purcell SM, Perlis RH, et al Genetic relationship between five psychiatric disorders estimated from genome-wide SNPs. Nature Genetics. 2013 Sep; 45(9): 984-+. 10.1038/ng.2711 23933821 PMC3800159 · DOI · Paper page

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Authors
Zayats, T., Athanasiu, L., Sonderby, I., Djurovic, S., Westlye, L. T., Tamnes, C. K., Fladby, T., Aase, H., Zeiner, P., Reichborn-Kjennerud, T., Knappskog, P. M., Knudsen, G. P., Andreassen, O. A., Johansson, S., & Haavik, J.
Affiliations
  • University of Bergen (NO)
  • Oslo University Hospital (NO)
  • University of Oslo (NO)
  • Norwegian Institute of Public Health (NO)
  • Haukeland University Hospital (NO)
Corresponding author
Zayats, Tetyana
Venue
PLoS ONE
Published
2015-04-13
Volume
10
Issue
4
Pages
e0122501
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2095280681
Cited by
83
References
86
Citations by year
2026: 2 · 2025: 4 · 2024: 2 · 2023: 6 · 2022: 5 · 2021: 5 · 2020: 8 · 2019: 11 · 2018: 15 · 2017: 11 · 2016: 9 · 2015: 5
FWCI
10.83
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • NORA - Norwegian Open Research Archives (submittedVersion, cc-by)
  • BIBSYS Brage (BIBSYS (Norway)) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
  • Figshare (submittedVersion, cc-by)
Funders
  • European Commission (602805)
  • Norges Forskningsråd (223273, 213837, 151918/S10, 2013-123)
  • National Institutes of Health (FP7/2007-2013, 223273, 2013-123, NO-ES-75558, n01es75558-11-0-1, 213837)
  • National Institute of Neurological Disorders and Stroke (1-UO1-NS-047537, UO1-NS-047537, 047537-01, UO1 NS 047537–01, NS 047537, U01NS047537, 1 UO1 NS 047537‐01, FP7/2007-2013)
  • National Institute of Environmental Health Sciences (ES-75558, UO1 NS 047537-01, NO-ES-75558, N01 ES075558, 1 UO1 NS 047537-01, N0-ES-75 558)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
attention deficit hyperactivity disorder, ADHD genetics, genome-wide association study, candidate genes, SLC9A9, tryptophan hydroxylase 2, gene expression regulation, cell adhesion, inflammation, heritability, pathway analysis, Norwegian population
MeSH terms
Attention Deficit Disorder with Hyperactivity, Genotype, Humans, Phenotype, Tryptophan Hydroxylase, Sodium-Hydrogen Exchangers, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Genome-Wide Association Study

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