Polymorphisms in TIM-3 and breast cancer susceptibility in Chinese women: A case-control study

  • Zheng Wang
  • , Xinghan Liu
  • , Xijing Wang
  • , Tie Chong
  • , Shuai Lin
  • , Meng Wang
  • , Xiaobin Ma
  • , Kang Liu
  • , Peng Xu
  • , Yanjing Feng
  • , Zhijun Dai

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Previous studies have found associations between polymorphisms in T cell immunoglobulin and mucin domain 3 (TIM-3) and increased risks of various cancers. However, the association between TIM-3 polymorphisms and breast cancer (BC) remains uncertain. In this study, a total of 560 BC patients and 583 age, sex, and ethnicity-matched healthy controls from Northwest China were included. The polymorphisms were genotyped using Sequenom MassARRAY. The expression level of TIM-3 protein was detected by immunohistochemistry. We observed rs10053538 had a significantly increased risk of BC, comparing with the wild-type genotype even after Bonferroni correction. In addition, the rs4704853 G > A variants were more frequent among BC patients than the controls (GA + AA vs. GG: OR = 1.32, 95% CI = 1.03-1.69, P = 0.026); However, the significance was lost after Bonferroni correction (P = 0.078). Furthermore, rs10053538 was associated with lymph node metastasis. Age stratification revealed that among patients aged < 49 years, those with the rs4704853 GA/AA genotype had a higher risk of BC; But there was no difference when Bonferroni correction was conducted. Immunohistochemical analysis showed that the expression of TIM-3 protein in the breast cancer tissues was higher in patients carrying the rs10053538 GT+TT genotype than those with GG genotype (P = 0.012). However, we failed to find any difference between BC patients and controls in any rs1036199 genetic model. These findings suggested that rs10053538 in TIM-3 might increase susceptibility to BC and promote the progression of BC in Chinese women.

Original languageEnglish
Pages (from-to)43703-43712
Number of pages10
JournalOncotarget
Volume7
Issue number28
DOIs
StatePublished - 2016

Keywords

  • Breast cancer
  • Case-control study
  • Polymorphism
  • TIM-3

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