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

Am J Med Genet B Neuropsychiatr Genet. 2007 Sep 5;144B(6):776-80. doi: 10.1002/ajmg.b.30519.

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.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Attention Deficit Disorder with Hyperactivity / genetics*
  • Brain-Derived Neurotrophic Factor / genetics
  • Child
  • Dopamine Plasma Membrane Transport Proteins / genetics
  • Female
  • Humans
  • Male
  • Parents
  • Polymorphism, Single Nucleotide
  • Receptor, Serotonin, 5-HT1B / genetics
  • Receptors, Dopamine D5 / genetics
  • Risk Factors
  • Synaptosomal-Associated Protein 25 / genetics

Substances

  • Brain-Derived Neurotrophic Factor
  • DRD5 protein, human
  • Dopamine Plasma Membrane Transport Proteins
  • HTR1B protein, human
  • Receptor, Serotonin, 5-HT1B
  • SLC6A3 protein, human
  • SNAP25 protein, human
  • Synaptosomal-Associated Protein 25
  • Receptors, Dopamine D5