Association of rs6983561 Polymorphism at 8q24 With Prostate Cancer Mortality in a Japanese Population

详细信息    查看全文

• 作者：Motofumi Suzuki¹ ; ^{SUZUKIM-URO@h.u-tokyo.ac.jp} ; ^{motofumiv158m@gmail.com} ; Miao Liu¹ ; Takayuki Kurosaki² ; Makoto Suzuki³ ; Tomio Arai⁴ ; Motoji Sawabe⁴ ; Yutaka Kasuya⁵ ; Moriaki Kato⁶ ; Tetsuya Fujimura¹ ; Hiroshi Fukuhara¹ ; Yutaka Enomoto¹ ; Hiroaki Nishimatsu¹ ; Akira Ishikawa¹ ; Haruki Kume¹ ; Yukio Homma¹ ; Tadaichi Kitamura⁷
• 关键词：Cancer-specific survival ; Prostate cancer ; rs6983561 polymorphism ; Single-nucleotide polymorphism
• 刊名：Clinical Genitourinary Cancer
• 出版年：2011
• 出版时间：September 2011
• 年：2011
• 卷：9
• 期：1
• 页码：46-52
• 全文大小：588 K

文摘

Background

Genome-wide association studies have revealed several genetic variants at 8q24 that are associated with prostate cancer susceptibility. Rs6983561 (A/C) is a single-nucleotide polymorphism located at 8q24 that has been established as a genetic risk marker for prostate cancer susceptibility. The present study investigated the association between the rs6983561 polymorphism and prostate cancer mortality in a Japanese population.

Patients and Methods

The study examined 518 native Japanese male patients with sporadic prostate cancer. Germline DNA samples were obtained from all participants and genotyping of rs6983561was performed using a TaqMan assay. Observation periods were from the date of diagnosis of prostate cancer to May 21, 2010. The Cox proportional hazards model was used to estimate the cause-specific survival (CSS) and the overall survival (OS).

Results

Patients with the CA/CC genotype of rs6983561 survived significantly longer than those with the AA genotype. In a multivariate model, the hazard ratios (HRs) and 95 % confidence intervals (CIs) of the CSS and the OS for the rs6983561 polymorphism were 2.438 (1.262 ?5.046, P = .007) and 1.957 (1.142 ?3.485, P = .014), respectively. When the analysis was restricted to subjects with metastatic disease, the HRs of the CSS and the OS were 3.353 (95 % CI, 1.689 ?7.446; P = 3.76 x 10^-4) and 3.361 (95 % CI, 1.741 ?7.136; P = 1.70 x 10^-4), respectively.

Conclusion

In the Japanese population examined in this study, the rs6983561 polymorphism at 8q24 was significantly associated with prostate cancer mortality, especially among patients with metastatic disease.