DNA pooling analysis of ADHD and genes regulating vesicle release of neurotransmitters.
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.
Brookes
K J
KJ
MRC Social, Genetic Developmental Psychiatry Centre, Institute of Psychiatry, United Kingdom.
Knight
J
J
Xu
X
X
Asherson
P
P
D001289:Attention Deficit Disorder with Hyperactivity / Q000235:genetics* / Q000378:metabolism*; D022162:Cytoplasmic Vesicles / Q000378:metabolism*; D004247:DNA / Q000378:metabolism*; D005260:Female; D005787:Gene Frequency; D005788:Gene Pool; D005819:Genetic Markers; D020022:Genetic Predisposition to Disease; D006801:Humans; D018377:Neurotransmitter Agents / Q000378:metabolism*; D020641:Polymorphism, Single Nucleotide; D013569:Synapses / Q000378:metabolism*
D005819:Genetic Markers; D018377:Neurotransmitter Agents; D004247:DNA