Abstract
BACKGROUND: The presence of specific and common genetic etiologies for autism spectrum disorders (ASD) and attention-deficit/hyperactivity disorder (ADHD) was investigated for 132 candidate genes in a two-stage design-association study.
METHODS: 1,536 single nucleotide polymorphisms (SNPs) covering these candidate genes were tested in ASD (n = 144) and ADHD (n = 110) patients and control subjects (n = 404) from The Netherlands. A second stage was performed with those SNPs from Stage I reaching a significance threshold for association of p < .01 in an independent sample of ASD patients (n = 128) and controls (n = 124) from the United Kingdom and a Dutch ADHD (n = 150) and control (n = 149) sample.
RESULTS: No shared association was found between ASD and ADHD. However, in the first and second ASD samples and in a joint statistical analysis, a significant association between SNP rs167771 located in the DRD3 gene was found (joint analysis uncorrected: p = 3.11 x 10(-6); corrected for multiple testing and potential stratification: p = .00162).
CONCLUSIONS: The DRD3 gene is related to stereotyped behavior, liability to side effects of antipsychotic medication, and movement disorders and may therefore have important clinical implications for ASD.
Original language | English |
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Pages (from-to) | 625-30 |
Number of pages | 6 |
Journal | Biological Psychiatry |
Volume | 65 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Apr 2009 |
Keywords
- Adolescent
- Attention Deficit Disorder with Hyperactivity
- Autistic Disorder
- Child
- Female
- Genome-Wide Association Study
- Humans
- Male
- Polymorphism, Single Nucleotide
- Receptors, Dopamine D3