• Infect. Genet. Evol. · Sep 2019

    Single-nucleotide polymorphisms in Toll-like receptor genes are associated with the prognosis of gastric cancer and are not associated with Helicobacter pylori infection.

    • Dan Zhao, Yan-Hua Wu, Tian-Cheng Zhao, Zhi-Fang Jia, Dong-Hui Cao, Na Yang, Yue-Qi Wang, Xue-Yuan Cao, and Jing Jiang.
    • Division of Clinical Research, First Hospital of Jilin University, Changchun, Jilin 130021, China.
    • Infect. Genet. Evol. 2019 Sep 1; 73: 384-389.

    AbstractToll-like receptors (TLRs) mediate the recognition of Helicobacter pylori (H. pylori) and initiate the innate immune response to infection. Genetic polymorphisms of TLRs play important roles in gastric carcinogenesis. The aim of this study was to determine the association between single nucleotide polymorphisms (SNPs) in TLR genes and H. pylori infection in the prognosis of gastric cancer (GC). A total of 756 GC patients were included in this study. Nine SNPs (TLR2: rs3804100, rs7696323, and rs10116253; TLR4: rs10983755, rs11536878, rs1927914, and rs7873784; TLR5: rs5744174; and TLR9: rs187084) in TLR genes were genotyped by MassARRAY assay. Kaplan-Meier survival curves and Cox regression were employed to conduct the associations between SNPs in TLRs and the survival of GC. Multivariate Cox regression indicated that patients with the TLR2 rs3804100 TT genotype exhibited worse survival than those with the CC + CT genotype (HR = 1.262, 95% CI: 1.006-1.582). No significant interaction between rs3804100 and H. pylori infection was observed for the prognosis of GC. Our results suggested that the TLR2 rs3804100 polymorphism may be a potential prognostic biomarker for GC independent of the H. pylori infection-related pathway.Copyright © 2019 Elsevier B.V. All rights reserved.

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