Journal of Cancer Research and Clinical Oncology

, Volume 138, Issue 6, pp 939–945

Association analysis of genetic variants in microRNA networks and gastric cancer risk in a Chinese Han population

  • Yuan Zhou
  • Wei-Dong Du
  • Gang Chen
  • Jian Ruan
  • Song Xu
  • Fu-Sheng Zhou
  • Xian-Bo Zuo
  • Zhao-Jie Lv
  • Xue-Jun Zhang
Original Paper

DOI: 10.1007/s00432-012-1164-8

Cite this article as:
Zhou, Y., Du, WD., Chen, G. et al. J Cancer Res Clin Oncol (2012) 138: 939. doi:10.1007/s00432-012-1164-8

Abstract

Purpose

To investigate associations between genetic variants involved in microRNA networks (microRNA biogenesis, microRNA and microRNA binding sites) and risk of gastric cancer.

Methods

We genotyped 19 SNPs of the microRNA-related genes in a case–control study of 311 gastric cancers and 425 cancer-free controls in a Chinese Han population.

Results

We found that two of the SNPs were significantly associated with gastric cancer. Inhibitory effect of minor allele T of rs2071504 SNP within the exon of POLR2A gene was significantly associated with gastric carcinogenesis (p = 0.033, aOR = 0.742, 95%CI = 0.564–0.977) and the SNP rs895819 in the miR-27a gene with the minor allele C presented significantly reduced risk to gastric cancer (p = 0.037, aOR = 0.771, 95%CI = 0.604–0.985). Further stratified analysis with regard to clinical pathological parameters of the patients indicated that the SNP rs2071504 was associated with lymph node metastasis (p = 0.021, aOR = 0.529, 95%CI = 0.307–0.910) and TMN stage (p = 0.021, aOR = 0.532, 95%CI = 0.311–0.908), respectively.

Conclusions

Our findings provided evidence that the SNP rs2071504 in the exon of POLR2A gene would not only confer a decreased risk of gastric cancer, but also influence lymph node metastasis and TMN stage of gastric cancer in the Chinese population.

Keywords

MicroRNAGastric cancerSingle-nucleotide polymorphism

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Yuan Zhou
    • 1
    • 2
  • Wei-Dong Du
    • 1
    • 2
    • 3
    • 4
  • Gang Chen
    • 1
  • Jian Ruan
    • 1
    • 2
  • Song Xu
    • 1
    • 2
  • Fu-Sheng Zhou
    • 1
  • Xian-Bo Zuo
    • 1
  • Zhao-Jie Lv
    • 1
  • Xue-Jun Zhang
    • 1
  1. 1.Key Laboratory of Dermatology, Ministry of Education of ChinaAnhui Medical UniversityHefeiChina
  2. 2.Department of BiologyAnhui Medical UniversityHefeiChina
  3. 3.Sektion Experimentelle AnaesthesiologieUniversitaetsklinikum UlmUlmGermany
  4. 4.Key Lab of Genome Research of Anhui ProvinceAnhui Medical UniversityHefeiChina