Predictive Value of MiR-219-1, MiR-938, MiR-34bc, and MiR-218 Polymorphisms for Gastric Cancer Susceptibility and Prognosis

Abstract EN

Gastric cancer (GC) is one of the most prominent global cancer-related health threats.

Genes play a key role in the precise mechanisms of gastric cancer.

SNPs in mi-RNAs could affect mRNA expression and then affect the risk and prognosis of GC.

Firstly, we have decided to perform a case-control study which included 897 GC patients and 992 controls to evaluate the association of miR-219-1 rs213210, miR-938 rs2505901, miR-34b/c rs4938723, and miR-218 rs11134527 polymorphisms with gastric cancer susceptibility.

Secondly, among the 897 GC patients above, 755 cases underwent a radical operation, without distant metastasis and with negative surgical margins included in the survival analysis to evaluate the association of the four SNPs above with gastric cancer prognosis.

The C/T or C/C genotypes of rs213210 were related to a lower GC risk (OR = 0.76, 95% CI: 0.62–0.93, P = 0.009 ) compared to the T/T genotype.

Rs11134527 in miR-218 was associated with GC survival, and the G/A and G/G genotypes of rs11134527 resulted in a decreased risk of death when compared with the A/A genotype (HR = 0.75, 95% CI: 0.61–0.95, P = 0.016 ).

This study found that miR-219-1 rs213210 polymorphism was associated with GC susceptibility and rs11134527 in miR-218 was positively correlated with GC prognosis.