title: HTR2A-1438A/G polymorphism influences the risk of schizophrenia but not bipolar disorder or major depressive disorder: a meta-analysis.
abstract: The incidence of psychiatric disorders has been shown to have a strong genetic component, and we conducted this study to investigate whether the -1438A/G polymorphism of the HTR2A gene was associated with susceptibility to schizophrenia (SZ), bipolar disorder (BD), and major depressive disorder (MDD). Pooled odd ratios (ORs) and 95% confidence intervals (95% CIs) were calculated using data obtained from a total 27 studies that investigated an association between the HTR2A -1438A/G polymorphism and SZ (15), BD (7), and MDD (4). We failed to observe an association between the HTR2A -1438A/G polymorphism and BD and MDD, and we found contrary results with regard to SZ. Our results showed that the -1438A/G polymorphism was a risk factor for SZ, especially in Caucasians (allele model: OR, 1.12; 95% CI, 1.05-1.20; I(2) = 17.3%; dominant model: OR, 1.14; 95% CI, 1.03-1.27; I(2) = 15.3%; recessive model: OR, 1.20; 95% CI, 1.06-1.37; I(2) = 0.0%; codominant model 1: OR, 1.16; 95% CI, 1.01-1.32; I(2) = 0.0%). We found that the association of the HTR2A -1438A/G polymorphism with SZ depends on the ethnic origin of the study population, and this genetic variant does not modify the susceptibility to BD or MDD. © 2013 Wiley Periodicals, Inc.
authors: Department of Internal Neurology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi, People's Republic of China.
authors: Lian
authors: L
authors: Gu
authors: Jianxiong
authors: J
authors: Long
authors: Yan
authors: Y
authors: Yan
authors: Qiang
authors: Q
authors: Chen
authors: Runde
authors: R
authors: Pan
authors: Xinfeng
authors: X
authors: Xie
authors: Xixiang
authors: X
authors: Mao
authors: Xueying
authors: X
authors: Hu
authors: Bo
authors: B
authors: Wei
authors: Li
authors: L
authors: Su
mesh_terms: D001714:Bipolar Disorder / Q000235:genetics*; D003865:Major Depressive Disorder / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D006801:Humans; D011110:Polymorphism, Genetic / Q000235:genetics*; D044402:Receptor, Serotonin, 5-HT2A / Q000235:genetics*; D012307:Risk Factors; D012559:Schizophrenia / Q000235:genetics*
chemical_list: D044402:Receptor, Serotonin, 5-HT2A