title: Relationship between the Glutathione-S-Transferase P1, M1, and T1 Genotypes and Prostate Cancer Risk in Korean Subjects.
abstract: OBJECTIVE
  The glutathione-S-transferase (GST)P1, GSTM1, and GSTT1 genotypes have been associated with an increased risk of prostate, bladder, and lung cancers. The aim of this study was to investigate the association between the GSTP1, GSTM1, and GSTT1 genotypes and the risk of prostate cancer in Korean men.
  
  
  METHODS
  The study group consisted of 166 patients with histologically confirmed prostate cancer. The control group consisted of 327 healthy, cancer-free individuals. The diagnosis of prostate cancer was made by transrectal ultrasound-guided biopsy. Patients with prostatic adenocarcinoma were divided into organ-confined (≤pT2) and non-organ-confined (≥pT3) subgroups. The histological grades were subdivided according to the Gleason score. The GSTP1, GSTM1, and GSTT1 genotypes were determined by using polymerase chain reaction-based methods. The relationship among GSTP1, GSTM1, and GSTT1 polymorphisms and prostate cancer in a case-control study was investigated.
  
  
  RESULTS
  The frequency of the GSTM1 null genotype in the prostate cancer group (54.2%) was higher than in the control group (odds ratio=1.53, 95% confidence interval=1.20-1.96). The comparison of the GSTP1, GSTM1, and GSTT1 genotypes and cancer prognostic factors, such as staging and grading, showed no statistical significance.
  
  
  CONCLUSIONS
  An increased risk for prostate cancer may be associated with the GSTM1 null genotype in Korean men, but no association was found with the GSTT1 or GSTP1 genotypes.
authors.affiliation: Department of Urology, Chonnam National University School of Medicine, Gwangju, Korea.
authors.forename: Dong Deuk
authors.initials: DD
authors.lastname: Kwon
authors.forename: Jea Whan
authors.initials: JW
authors.lastname: Lee
authors.forename: Dong Youp
authors.initials: DY
authors.lastname: Han
authors.forename: Il Young
authors.initials: IY
authors.lastname: Seo
authors.forename: Seung Chel
authors.initials: SC
authors.lastname: Park
authors.forename: Hee Jong
authors.initials: HJ
authors.lastname: Jeong
authors.forename: Yun Sik
authors.initials: YS
authors.lastname: Yang
authors.forename: Soo-Cheon
authors.initials: SC
authors.lastname: Chae
authors.forename: Kyung Sook
authors.initials: KS
authors.lastname: Na
authors.forename: Kum Ja
authors.initials: KJ
authors.lastname: Mo
authors.forename: Joung Joong
authors.initials: JJ
authors.lastname: Kim
authors.forename: Joung Sik
authors.initials: JS
authors.lastname: Rim