Does parental expressed emotion moderate genetic effects in ADHD? An exploration using a genome wide association scan

E. Sonuga-Barke, J. Lasky-Su, B. Neale, R.D. Oades, W. Chen, B. Franke, J.K. Buitelaar, T. Banaschewski, R. Ebstein, M. Gill, R.J. Anney, A. Miranda, F. Mulas, H. Roeyers, A. Rothenberger, J.A. Sergeant, H.C. Steinhausen, M. Thompson, P. Asherson, S.V. Faraone

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Abstract

Studies of gene x environment (G x E) interaction in ADHD have previously focused on known risk genes for ADHD and environmentally mediated biological risk. Here we use G x E analysis in the context of a genome-wide association scan to identify novel genes whose effects on ADHD symptoms and comorbid conduct disorder are moderated by high maternal expressed emotion (EE). SNPs (600,000) were genotyped in 958 ADHD proband-parent trios. After applying data cleaning procedures we examined 429,981 autosomal SNPs in 909 family trios. ADHD symptom severity and comorbid conduct disorder was measured using the Parental Account of Childhood Symptoms interview. Maternal criticism and warmth (i.e., EE) were coded by independent observers on comments made during the interview. No G x E interactions reached genome-wide significance. Nominal effects were found both with and without genetic main effects. For those with genetic main effects 36 uncorrected interaction P-values were <10
Original languageEnglish
Pages (from-to)1359-1368
Number of pages10
JournalAmerican Journal of Medical Genetics Part B: Neuropsychiatric Genetics
Volume147B
Issue number8
DOIs
Publication statusPublished - 2008

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