Meta-analyses of pooled ORs support association of schizophrenia to the Ser311Cys polymorphism in DRD2 and the T102C polymorphism in HTR2A, and of attention deficit hyperactivity disorder to the 48-bp repeat in DRD4.
The purpose of this study was to examine the relationship between ADHD and two polymorphisms (T102C and 1438 G/A) in the 5-HT2A gene in a sample of Turkish children.
One hundred and fifteen families with a total of 143 children diagnosed with ADHD (DSM-IV) were genotyped for the His452 Tyr and the T102C polymorphisms in the serotonin HTR2A receptor gene.