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International Journal of Clinical Oncology

, Volume 24, Issue 5, pp 494–500 | Cite as

Interaction of H. pylori with toll-like receptor 2-196 to -174 ins/del polymorphism is associated with gastric cancer susceptibility in southern China

  • Jin Huang
  • Jun-Jie Hang
  • Xiang-Rong Qin
  • Jian Huang
  • Xiao-Yong WangEmail author
Original Article
  • 92 Downloads

Abstract

Background

Genetic polymorphisms of Toll-like receptors play important roles in gastric carcinogenesis. The aim of this study was to determine the role of TLR2-196 to -174 ins/del polymorphism in gastric cancer susceptibility and prognosis.

Methods

This study included 520 people from southern China. Samples were genotyped by the allele-specific polymerase chain reaction, among which 10% were randomly selected for sequencing. The serological method was used to determine Helicobacter pylori.

Results

The TLR2 genotype was not associated with the risk of H. pylori infection. The del/del genotype exhibited significantly higher gastric cancer risk (adjusted OR 2.59, 95% CI 1.33‒5.07) than that of the ins/ins genotype. Further stratification analyses demonstrated that the del/del genotype was associated with a risk of intestinal gastric cancer (adjusted OR 2.62, 95% CI 1.34–5.14). In addition, the presence of the del/del genotype and the H. pylori infection conferred a synergistic effect (OR 3.04, 95% CI 1.33‒6.98) for the development of gastric cancer. The del/del genotype was not associated with a poor prognosis in gastric cancer patients.

Conclusion

The del/del genotype is associated with an increased gastric cancer risk in the southern Chinese population. However, TLR2 polymorphism is neither associated with H. pylori infection, nor with a poor prognosis.

Keywords

H. pylori Gastric cancer Prognosis TLR2 Polymorphism 

Notes

Acknowledgements

This study was supported by the Applied Basic Research Fund of Changzhou, China (CJ20140022, CJ20179034), Young medical talents of Jiangsu province (QNRC2016269), the High-level Medicine Talents Training Project (2016CZBJ022), and the Youth Science and Technology Project of Changzhou Health and Family Planning Commission (QN201601).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest.

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Copyright information

© Japan Society of Clinical Oncology 2018

Authors and Affiliations

  1. 1.Department of GastroenterologyChangzhou No. 2 People’s HospitalChangzhouChina
  2. 2.Department of OncologyChangzhou No. 2 People’s HospitalChangzhouChina

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