DOI QR코드

DOI QR Code

2R of Thymidylate Synthase 5'-untranslated Enhanced Region Contributes to Gastric Cancer Risk: a Meta-analysis

  • Yang, Zhen (Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University) ;
  • Liu, Hong-Xiang (Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University) ;
  • Zhang, Xie-Fu (Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University)
  • 발행 : 2012.05.30

초록

Background: Studies investigating the association between 2R/3R polymorphisms in the thymidylate synthase 5'-untranslated enhanced region (TYMS 5'-UTR) and gastric cancer risk have generated conflicting results. Thus, a meta-analysis was performed to summarize the data on any association. Methods: Pubmed, Embase, and CNKI databases were searched for all available studies. The strength of association between TYMS 5'-UTR 2R/3R polymorphism and gastric cancer risk was estimated by odds ratios (ORs) with 95% confidence intervals (CIs). Results: Six individual case-control studies with a total of 1, 472 cases and 1, 895 controls were included into this meta-analysis. Analyses of total six relevant studies showed that there was no obvious association between the TYMS 5'-UTR 2R/3R polymorphism and gastric cancer risk. Subgroup analyses based on ethnicity showed 2R of TYMS 5'-UTR 2R/3R contributes to gastric cancer risk in the Asian population ($OR_{Homozygote\;model}$ = 1.71, 95%CI 1.19-2.46, P = 0.004; $OR_{Recessive\;genetic\;model}$ = 1.70, 95%CI 1.18-2.43, P = 0.004). However, the association in Caucasian populations was uncertain due to the limited studies. Conclusions: Our meta-analysis suggests that 2R of TYMS 5'-UTR 2R/3R contributes to gastric cancer risk in the Asian population, while this association in Caucasians populations needs further study.

키워드

참고문헌

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