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Title: Analysis of 5-hydroxytryptamine 2c receptor gene promoter variants as alcohol-dependence risk factors. Author: Mottagui-Tabar S, McCarthy S, Reinemund J, Andersson B, Wahlestedt C, Heilig M. Journal: Alcohol Alcohol; 2004; 39(5):380-5. PubMed ID: 15304380. Abstract: AIMS: To examine whether polymorphic variants of the HTR2C gene are associated with diagnosis of alcohol dependence. METHODS: We compared allele frequencies of five HTR2C promoter polymorphisms in a Nordic population of alcohol dependent individuals (Males: n = 309; Females: n = 127) and ethnically matched controls (Males: n = 83; Females: n = 190) in whom alcohol dependence was established, or any diagnosis of substance disorder was excluded, respectively. Patients were further subtyped into Type I (late onset) and Type II (early onset) alcoholics. RESULTS: None of the individual polymorphisms indicated significant association with alcohol dependence. A common promoter haplotype (GAGG) exhibited different distribution frequencies between males and females (Type I), however on Bonferroni's multiple-testing correction, this observation proved to be insignificant. CONCLUSIONS: Although we report a lack of association between alcohol dependence and five common promoter polymorphisms, and the constituted haplotypes, the analysis tends to indicate gender and sub-type differences. We suggest that a follow up study with larger sample numbers should be performed to improve the power to detect the genetic influences of HTR2C in alcohol dependence.[Abstract] [Full Text] [Related] [New Search]