title: Promoter Polymorphism (rs12770170, -184C/T) of Microseminoprotein, Beta as a Risk Factor for Benign Prostatic Hyperplasia in Korean Population.
abstract: OBJECTIVE
  Benign prostatic hyperplasia (BPH) is the most common prostate disease in aging men. Microseminoprotein-beta (MSMB) is abundant in semen. In this study, we investigated association between single nucleotide polymorphisms (SNPs) at the promoter of the MSMB gene and the risk for developing BPH in a Korean population.
  
  
  METHODS
  We genotyped two promoter polymorphisms (rs12770171, -184C/T and rs10993994, -2C/T) of the MSMB gene by direct sequencing. Ninety-five BPH patients and 78 control subjects were recruited for this study. SNPStats and Haploview version 4.2 were used for genetic analyses. Multiple logistic regression models (codominant, dominant, recessive, and log-additive models) were applied to determine the odds ratio (OR), 95% confidence interval (CI), and P-value.
  
  
  RESULTS
  Genotype frequency of the rs12770171 SNP showed significant difference between BPH patients and controls (OR, 2.14; 95% CI, 1.07-4.27; P=0.032 in the codominant 1 model; OR, 2.31; 95% CI, 1.19-4.47; P=0.011 in the dominant model; and OR, 2.05; 95% CI, 1.17-3.61; P=0.009 in the log-additive model). Moreover, the SNP also showed association between the two groups (OR, 2.05; 95% CI, 1.19-3.52; P=0.009). The rs10993994 SNP was not associated with BPH. In haplotype analysis, CC and TT haplotypes were associated with BPH (P<0.05).
  
  
  CONCLUSIONS
  This result indicates that a promoter polymorphism (rs12770170, -184C/T) in the MSMB gene may be associated with BPH development in a Korean population.
authors.affiliation: Department of Dental Pharmacology, Dankook University School of Dentistry, Cheonan, Korea.
authors.forename: Ju Yeon
authors.initials: JY
authors.lastname: Ban
authors.affiliation: Department of Urology, Kyung Hee University School of Medicine, Seoul, Korea.
authors.forename: Koo Han
authors.initials: KH
authors.lastname: Yoo
keywords: Beta-microseminoprotein; Prostatic hyperplasia; Single nucleotide polymorphism