Xiao Sun1, Ying-Di Liu1, Wei Gao1, Shao-Hua Shen1, Meng Li1. 1. Xiao Sun, Wei Gao, Shao-Hua Shen, Meng Li, Department of Gastroenterology of PLA General Hospital, Beijing 100853, China.
Abstract
AIM: To investigate the association between hypoxia-inducible factor-1α (HIF-1α) polymorphisms (-1772C>T and -1790G>A) and the risk of digestive tract cancer. METHODS: A total of 13 eligible studies were retrieved from PubMed, EMBASE, and the China National Knowledge Infrastructure database. The odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to estimate the strength of the associations. RESULTS: By pooling the eligible studies, we found that the HIF-1α -1772C>T polymorphism was not associated with the risk of developing digestive tract cancer (dominant comparison, OR: 1.156; 95%CI: 0.839-1.593; P heterogeneity = 0.007), and no significant association was found in the Asian population or the Caucasian population. However, for the -1790G>A polymorphism, carriers of the variant -1790A allele had a significantly increased risk of digestive tract cancer compared with those with the wildtype -1790G allele (dominant comparison, OR: 3.252; 95%CI: 1.661-6.368; P heterogeneity < 0.001). Additionally, this increased risk of digestive cancer was only detected in Asians; there was no significant association in Caucasians. CONCLUSION: This meta-analysis demonstrates that the HIF-1α -1790G>A polymorphism is associated with a significantly increased risk of digestive tract cancer, while the -1772C>T polymorphism is not.
AIM: To investigate the association between hypoxia-inducible factor-1α (HIF-1α) polymorphisms (-1772C>T and -1790G>A) and the risk of digestive tract cancer. METHODS: A total of 13 eligible studies were retrieved from PubMed, EMBASE, and the China National Knowledge Infrastructure database. The odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to estimate the strength of the associations. RESULTS: By pooling the eligible studies, we found that the HIF-1α -1772C>T polymorphism was not associated with the risk of developing digestive tract cancer (dominant comparison, OR: 1.156; 95%CI: 0.839-1.593; P heterogeneity = 0.007), and no significant association was found in the Asian population or the Caucasian population. However, for the -1790G>A polymorphism, carriers of the variant -1790A allele had a significantly increased risk of digestive tract cancer compared with those with the wildtype -1790G allele (dominant comparison, OR: 3.252; 95%CI: 1.661-6.368; P heterogeneity < 0.001). Additionally, this increased risk of digestive cancer was only detected in Asians; there was no significant association in Caucasians. CONCLUSION: This meta-analysis demonstrates that the HIF-1α -1790G>A polymorphism is associated with a significantly increased risk of digestive tract cancer, while the -1772C>T polymorphism is not.
Entities:
Keywords:
Cancer risk; Digestive tract cancer; Hypoxia-inducible factor-1α; Meta-analysis; Polymorphisms
Authors: M I Koukourakis; A Giatromanolaki; J Skarlatos; L Corti; S Blandamura; M Piazza; K C Gatter; A L Harris Journal: Cancer Res Date: 2001-03-01 Impact factor: 12.701
Authors: Wen-Lei Zhuo; Yun-Song Zhang; Yan Wang; Xian-Lu Zhuo; Bo Zhu; Lei Cai; Zheng-Tang Chen Journal: Arch Med Res Date: 2009-02-25 Impact factor: 2.235