Polymorphisms in prostate stem cell antigen gene rs2294008 increase gastric cancer risk in Chinese
Article first published online: 25 JAN 2011
Copyright © 2011 Wiley-Liss, Inc.
Volume 50, Issue 5, pages 353–358, May 2011
How to Cite
Zeng, Z., Wu, X., Chen, F., Yu, J., Xue, L., Hao, Y., Wang, Y., Chen, M., Sung, J. J.Y. and Hu, P. (2011), Polymorphisms in prostate stem cell antigen gene rs2294008 increase gastric cancer risk in Chinese. Mol. Carcinog., 50: 353–358. doi: 10.1002/mc.20718
- Issue published online: 8 APR 2011
- Article first published online: 25 JAN 2011
- Manuscript Accepted: 3 NOV 2010
- Manuscript Revised: 2 NOV 2010
- Manuscript Received: 16 AUG 2010
- prostate stem cell antigen;
- gastric cancer;
A recent genome-wide study identified a strong association between polymorphisms in the prostate stem cell antigen (PSCA) gene and the risk of diffuse-type of gastric cancer in Japanese and Korean population. In this case–control study, we aimed to investigate the possible association between PSCA rs2294008 C/T with clinicopathological features and the prognosis of gastric cancer in a Southern Chinese population. Genotypes of 460 gastric cancer patients and 549 controls were determined by PCR-restriction fragment length polymorphism (PCR-RFLP) and DNA sequencing. We found that individuals with at least one copy of the rs2294008T allele (CT or TT genotype) had an increased risk for gastric cancer compared with CC genotype (OR = 1.42, 95% CI = 1.10–1.82, P = 0.006). Further stratification analyses indicated that the effect of PSCA rs2294008T carriers was noteworthy in intestinal type (OR = 1.55, 95% CI = 1.18–2.04, P = 0.002), poorly differentiated (OR = 1.59, 95% CI = 1.19–2.13, P = 0.002), noncardia (OR = 1.55, 95% CI = 1.17–2.04, P = 0.002) subtypes of gastric cancer. Cox proportional hazards analyses demonstrated that TT genotype (HR = 2.12, 95% CI = 1.22–3.69, P = 0.008) as well as TNM staging were prognostic factors of gastric cancer patients. In conclusion, The T allele of PSCA rs2294008 is associated with increased risk of gastric cancer, especially intestinal type, poorly differentiated, early onset, and noncardia gastric cancer in Chinese population. TNM staging and TT genotype might be involved in the prognosis of gastric cancer patients. Mol. Carcinog. © 2011 Wiley-Liss, Inc.