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ICAM-1 +469 A/G polymorphism and cancer risk: a meta-analysis involving 9375 subjects
Ye Wang1, Liuqun Jia1, Yongchun Shen1
1Department of Respiratory Medicine, West China Hospital of Sichuan University and Division of Pulmonary Diseases, State Key Laboratory of Biotherapy of China Chengdu 610041, China.
Background:
The ICAM-1 +469 A/G polymorphism has been implicated in susceptibility to cancer, but the results were inconclusive. The present meta-analysis aimed to investigate the association between the ICAM-1 +469 A/G polymorphism and cancer risk.
Methods:
We searched PubMed, Embase to identify studies that evaluated the association between the ICAM-1 +469 A/G polymorphism and cancer risk. Data were extracted and statistical analysis was performed by using the software Revman 5.1 and STATA 12.0.
Results:
A total of 14 studies involving 9375 subjects were included. The results suggested that ICAM-1 +469 A/G polymorphism had no associated with cancer risk (OR=0.91, 95% CI: 0.76-1.08, P=0.27 for GG+AG vs. AA). Subgroup analysis by cancer type indicated the there was no associated between this polymorphism and breast cancer (OR=0.91, 95% CI: 0.72-1.15, P=0.43 for GG+AG vs. AA), but it was associated with decreased risk of colorectal cancer (OR=0.59, 95% CI: 0.41-0.85, P=0.005 for GG+AG vs. AA). Subgroup analysis by ethnicity revealed a decreased risk of cancer among Caucasians (OR=0.88, 95% CI: 0.78-0.99, P=0.03 for GG+AG vs.
Aa) Conclusion:
The evidence from current meta-analysis doesn't support the ICAM-1 +469 A/G polymorphism as a risk factor for cancer. Further studies are needed to validate these findings.
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