Association Between the GSTP1 Codon 105 Polymorphism and Gastric Cancer Risk: an Updated Meta-analysis

Bao, Li-Dao; Niu, Jian-Xiang; Song, Hui; Wang, Yi; Ma, Rui-Lian; Ren, Xian-Hua; Wu, Xin-Lin

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자료유형: 학술저널

저자정보: Bao, Li-Dao (Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University) Niu, Jian-Xiang (Department of General Surgery Affiliated Hospital of Inner Mongolia Medical University) Song, Hui (Department of Medicine of Jinan Central Hospital, and Medical School of Shandong University) Wang, Yi (Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University) Ma, Rui-Lian (Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University) Ren, Xian-Hua (Department of Pharmacy, Affiliated Hospital of Inner Mongolia Medical University) Wu, Xin-Lin (Department of General Surgery Affiliated Hospital of Inner Mongolia Medical University)

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제13권 제8호

발행연도: 2012.1

수록면: 3,687 - 3,693 (7page)

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Objective: The current meta-analysis was performed to address a more accurate estimation of the association between glutathione S-transferase P1 (GSTP1) codon 105 polymorphism and risk of gastric cancer (GC), which has been widely reported with conflicting results. Methods: A comprehensive literature search was conducted to identify all the relevant studies. Fixed or random effect models were selected based on the heterogeneity test. Publication bias was estimated using Begg's funnel plots and Egger's regression test. Results: A total of 20 studies containing 2,821 GC cases and 6,240 controls were finally included in the analyses. Overall, no significant association between GSTP1 polymorphism and GC risk was observed in worldwide populations. However, subgroup analysis stratified by ethnicity showed that GSTP1 polymorphism was significantly associated with increased risk of GC in Asians (G vs. A, OR = 1.273, 95%CI=1.011-1.605; GG vs. AA, OR=2.103, 95%CI=1.197-3.387; GG vs. AA+AG, OR =2.103, 95%CI=1.186-3.414). In contrast, no significant association was found in Caucasians in any genetic models, except for with AG vs. AA (OR=0.791, 95%CI=0.669-0.936). Furthermore, the GSTP1 polymorphism was found to be significantly associated with GC in patients with H. pylori infection and in those with a cardiac GC. Subgroup analysis stratified by Lauren's classification and smoking status showed no significant association with any genetic model. No studies were found to significantly influence the pooled effects in each genetic mode, and no potential publication bias was detected. Conclusion: This meta-analysis suggested that the GSTP1 polymorphism might be associated with increased risk of GC in Asians, while GSTP1 heterozygote genotype seemed to be associated with reduced risk of GC. Since potential confounders could not be ruled out completely, further studies are needed to confirm these results.

#GSTP1 #gastric cancer #gene polymorphism #Helicobacter pylori

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