Am J Med Genet B Neuropsychiatr Genet. 2007 Sep 5;144B(6):776-80.

Investigation of parent-of-origin effects in ADHD candidate genes.

Kim JW, Waldman ID, Faraone SV, Biederman J, Doyle AE, Purcell S, Arbeitman L, Fagerness J, Sklar P, Smoller JW.

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Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA. jwkim@partners.org

Abstract

Attention deficit hyperactivity disorder (ADHD) is a common early-onset childhood disorder with a strong genetic component. Results from previous studies have suggested that there may be a parent-of-origin effect for ADHD candidate genes. In particular, a recent investigation identified a pattern of paternal over-transmission of risk alleles for nine ADHD candidate genes. We examined this phenomenon in a sample of 291 trios for five genes previously associated with ADHD (HTR1B, SNAP-25, DRD5, DAT1, and BDNF). Using a dense map of markers and two analytic methods in this relatively large family-based sample, we do not find any evidence for significant paternal over-transmission of risk alleles in these candidate loci. Thus, we conclude that a substantial parent-of-origin effect is unlikely for these leading ADHD candidate genes.

PMID:: 17427194; [PubMed - indexed for MEDLINE]

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Investigation of parent-of-origin effects in ADHD candidate genes.
Investigation of parent-of-origin effects in ADHD candidate genes.
Am J Med Genet B Neuropsychiatr Genet. 2007 Sep 5 ;144B(6):776-80.

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Investigation of parent-of-origin effects in ADHD candidate genes.

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