Testing for gene × environment interaction effects in attention deficit hyperactivity disorder and associated antisocial behavior

Langley, Kate ORCID: https://orcid.org/0000-0002-2033-2657, Turic, Dragana, Rice, Frances ORCID: https://orcid.org/0000-0002-9484-1729, Holmans, Peter ORCID: https://orcid.org/0000-0003-0870-9412, van den Bree, Marianne Bernadette ORCID: https://orcid.org/0000-0002-4426-3254, Craddock, Nicholas John ORCID: https://orcid.org/0000-0003-2171-0610, Kent, L., Owen, Michael John ORCID: https://orcid.org/0000-0003-4798-0862, O'Donovan, Michael Conlon ORCID: https://orcid.org/0000-0001-7073-2379 and Thapar, Anita ORCID: https://orcid.org/0000-0002-3689-737X 2008. Testing for gene × environment interaction effects in attention deficit hyperactivity disorder and associated antisocial behavior. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics 147B (1) , pp. 49-53. 10.1002/ajmg.b.30571

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Abstract

Gene × environment (G × E) interactions are increasingly thought to have substantial influence on the aetiology and clinical manifestations of complex disorders. In ADHD, although main effects of specific genetic variants and pre- or peri-natal variables have been reported and replicated using pooled analyses, few studies have looked at possible interactions. In a clinical sample of 266 children with ADHD, we tested for interaction between gene variants (in DRD4, DAT1, DRD5, and 5HTT) found to be associated with ADHD in pooled analyses and maternal smoking, alcohol use during pregnancy and birth weight. First, G × E effects on a diagnosis of ADHD were tested using conditional logistic regression analyses. Second, possible modifying effects of G × E on symptoms of associated conduct disorder and oppositional defiant disorder (ODD) were investigated using linear regression analysis. The sample size associated with each of the analyses differed as not each variant had been genotyped for each individual. No effects of G × E on ADHD diagnosis were observed. The results suggest that lower birth weight and maternal smoking during pregnancy may interact with DRD5 and DAT1 (birth weight only) in influencing associated antisocial behavior symptoms (ODD and conduct disorder). These preliminary findings showed no evidence of interaction between previously implicated variants in ADHD and specific environmental risk factors, on diagnosis of the disorder. There may be evidence of G × E on associated antisocial behavior in ADHD, but further investigation is needed

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine Systems Immunity Research Institute (SIURI) MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG) Neuroscience and Mental Health Research Institute (NMHRI)
Subjects:	R Medicine > R Medicine (General) R Medicine > RJ Pediatrics > RJ101 Child Health. Child health services
Uncontrolled Keywords:	gene environment interaction; birth weight; maternal smoking during pregnancy; social class
Publisher:	Wiley-Blackwell
ISSN:	1552-4841
Last Modified:	05 Aug 2024 08:29
URI:	https://orca.cardiff.ac.uk/id/eprint/21968

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