BMC Gastroenterology (Oct 2009)

Genetic factors associated with intestinal metaplasia in a high risk Singapore-Chinese population: a cohort study

  • Salto-Tellez Manuel,
  • Lai Kin,
  • Koh King,
  • Lee Sumarlin,
  • Hill Jeffrey,
  • Loh Marie,
  • Zhu Feng,
  • Iacopetta Barry,
  • Yeoh Khay,
  • Soong Richie

DOI
https://doi.org/10.1186/1471-230X-9-76
Journal volume & issue
Vol. 9, no. 1
p. 76

Abstract

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Abstract Background Intestinal metaplasia (IM) is an important precursor lesion in the development of gastric cancer (GC). The aim of this study was to investigate genetic factors previously linked to GC risk for their possible association with IM. A total of 18 polymorphisms in 14 candidate genes were evaluated in a Singapore-Chinese population at high risk of developing GC. Methods Genotype frequencies were compared between individuals presenting with (n = 128) or without (n = 246) IM by both univariate and multivariate analysis. Results Carriers of the NQO1 609 T allele showed an association with IM in individuals who were seropositive for Helicobacter pylori (HP+; OR = 2.61, 95%CI: 1.18-5.80, P = .018). The IL-10 819 C allele was also associated with IM in HP+ individuals (OR = 2.32, 95%CI: 1.21-4.43, P = 0.011), while the PTPN11 A allele was associated with IM in HP- individuals (OR = 2.51, 95%CI: 1.16-5.40, P = 0.019), but showed an inverse association in HP+ subjects (OR = 0.46, 95%CI: 0.21-0.99, P = 0.048). Conclusion Polymorphisms in NQO1, IL-10 and PTPN11, in combination with HP status, could be used to identify individuals who are more likely to develop IM and therefore GC.