Research Article

No relationship found between -1438A/G polymorphism of the serotonin 2A receptor gene (rs6311) and major depression susceptibility in a northeastern Thai population

Published: June 22, 2010
Genet. Mol. Res. 9 (2) : 1171-1176 DOI: 10.4238/vol9-2gmr823

Abstract

Several lines of evidence suggest a molecular role of -1438A/G single nucleotide polymorphism in the 5-HTR2A gene promoter (rs6311) in regulating the expression of this gene, making rs6311 polymorphism a promising candidate for an association study. We looked for a possible association between rs6311 polymorphism and major depressive disorder (MDD) in a northeastern Thai population. We included 180 patients with MDD and 183 unrelated healthy controls in our study. Genotyping was performed using PCR-RFLP. We found no significant differences between the two groups with regard to both genotype distributions (X2 = 1.32, d.f. = 2, P = 0.516) and allele frequencies (X2 = 0.01, d.f. = 1, P = 0.913, odds ratio = 0.96, 95% confidence interval = 0.67-1.39). Therefore, this single nucleotide polymorphism appears not to be involved in the etiology of MDD.

Several lines of evidence suggest a molecular role of -1438A/G single nucleotide polymorphism in the 5-HTR2A gene promoter (rs6311) in regulating the expression of this gene, making rs6311 polymorphism a promising candidate for an association study. We looked for a possible association between rs6311 polymorphism and major depressive disorder (MDD) in a northeastern Thai population. We included 180 patients with MDD and 183 unrelated healthy controls in our study. Genotyping was performed using PCR-RFLP. We found no significant differences between the two groups with regard to both genotype distributions (X2 = 1.32, d.f. = 2, P = 0.516) and allele frequencies (X2 = 0.01, d.f. = 1, P = 0.913, odds ratio = 0.96, 95% confidence interval = 0.67-1.39). Therefore, this single nucleotide polymorphism appears not to be involved in the etiology of MDD.