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DNA pooling analysis of ADHD and genes regulating vesicle release of neurotransmitters

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<mark>Journal publication date</mark>5/11/2005
<mark>Journal</mark>American Journal of Medical Genetics Part B: Neuropsychiatric Genetics
Issue number1
Volume139B
Number of pages5
Pages (from-to)33-37
Publication StatusPublished
Early online date4/08/05
<mark>Original language</mark>English

Abstract

ADHD is one of the most prevalent, and heritable behavioural disorders in childhood. Genetic associations have been reported with polymorphic variants within or near to dopamine pathway genes. Recently snap-25 has also shown association with ADHD in several datasets. We therefore investigated other genes that produce proteins that interact with SNAP-25 in the mechanism of vesicular release of neurotransmitters at the synapse. A total of 106 SNPs were screened for minor allele frequency greater than 5% and 61 SNPs selected for analysis in DNA pools made up from an ADHD clinical sample of DSM-IV combined type probands (n = 180) and a control sample of 90 males and 90 females. Initial screening identified several SNPs that showed allele frequency differences of 5% or more. One SNP in the synaptophysin gene showed suggestive evidence of association following case-control and TDT analysis and warrants further investigation.