Association of gene four single nucleotide polymorphisms with the risk, invasion, metastasis and overall survival of gastric cancer in Chinese.

The receptor for advanced glycation end products (RAGE) is an oncogenic trans-membranous receptor expressed in many cells. The aim of this study was to clarify the association between gene 4 single nucleotide polymorphisms (SNPs) and the risk, invasion, metastasis and overall survival of gastric cancer. We performed a hospital-based case-control study involving 369 gastric cancer patients and 493 cancer free controls. Four widely-studied SNPs, rs1800625 (T-429C), rs1800624 (T-374A), rs2070600 (Gly82Ser) and rs184003 (G1704T) in RAGE gene, were genotyped by the polymerase chain reaction - ligase detection reaction method. The gene rs1800625 TT genotype and T allele were significantly associated with a reduced risk of gastric cancer (TT vs. CC: adjusted odds ratio [OR]: 0.72, 95% CI: 0.55-0.95, =0.021; T vs. C: adjusted OR: 0.67, 95% CI: 0.46-0.97, =0.032). No hints of significance were detected for the other three SNPs in association with gastric cancer risk. Moreover, rs1800625 and rs184003 were significantly associated with tumor clinical stage (=0.010 and 0.032, respectively). Survival curves differed significantly between the genotypes of rs1800625. gene SNP rs1800625 was significantly associated with gastric cancer risk, and rs1800625 and rs184003 were related to tumor clinical stage, indicating that gene may be a gastric cancer-susceptibility gene.