title: DRD2, DRD3 and 5HT2A receptor genes polymorphisms in obsessive-compulsive disorder.
abstract: We performed an association analysis of the DRD2, DRD3 and 5HT2A genes polymorphisms in 67 Obsessive-Compulsive Disorder (OCD) patients and 54 healthy controls. There were no statistically significant differences in genotype or allele frequencies for any of the polymorphisms studied between OCD subjects and controls. For the subgrouped analysis, no results were significant after correction for multiple testing, although homozygosity of DRD2/A2A2 in subjects displaying vocal or motor tics approached significance compared to controls (Fisher exact test, P = 0.008). Our results may follow the notion that OCD patients with tics represent a different genetic subtype of the disease.
authors.affiliation: División de Investigaciones Clínicas, Instituto Mexicano de Psiquiatria, México, México DF.
authors.forename: H
authors.initials: H
authors.lastname: Nicolini
authors.forename: C
authors.initials: C
authors.lastname: Cruz
authors.forename: B
authors.initials: B
authors.lastname: Camarena
authors.forename: B
authors.initials: B
authors.lastname: Orozco
authors.forename: J L
authors.initials: JL
authors.lastname: Kennedy
authors.forename: N
authors.initials: N
authors.lastname: King
authors.forename: K
authors.initials: K
authors.lastname: Weissbecker
authors.forename: J R
authors.initials: JR
authors.lastname: de la Fuente
authors.forename: D
authors.initials: D
authors.lastname: Sidenberg
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001923:Brain Chemistry / Q000235:genetics; D003001:Cloning, Molecular; D005260:Female; D008040:Genetic Linkage; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D009771:Obsessive-Compulsive Disorder / Q000235:genetics*; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D044402:Receptor, Serotonin, 5-HT2A; D017448:Receptors, Dopamine D2 / Q000235:genetics*; D050637:Receptors, Dopamine D3; D011985:Receptors, Serotonin / Q000235:genetics*
chemical_list: C493593:DRD3 protein, human; D044402:Receptor, Serotonin, 5-HT2A; D017448:Receptors, Dopamine D2; D050637:Receptors, Dopamine D3; D011985:Receptors, Serotonin