FAS and FAS ligand (FASL) play crucial roles in apoptotic signaling, and deregulation of this pathway may facilitate carcinogenesis. Studies on the association between the FAS/FASL polymorphisms (FAS-1377G/A rs2234767, FAS-670A/G rs1800682, and FASL-844C/T rs763110) and breast cancer risk have reported inconsistent results. Therefore, to characterize the relationship between those polymorphisms and breast cancer risk, we undertook a meta-analysis of those studies. Several electronic databases were searched for articles on the FAS/FASL polymorphisms and breast cancer risk. The genotype data were extracted; pooled odds ratios (OR) with 95 % confidence intervals (CIs) were used to estimate the strength of the association. Five studies were eligible for our meta-analysis. Overall, we observed significant associations of the FAS-1377G/A polymorphism with breast cancer susceptibility (AG vs. GG: OR = 1.15, 95 % CI 1.02-1.30; AA vs. GG: OR = 1.39, 95 % CI 1.12-1.72; AG/AA vs. GG: OR = 1.18, 95 % CI, 1.16-1.32; A vs. G: OR = 1.16, 95 % CI 1.06-1.26), but we did not observe significant association of the Fas-670A/G and FasL-844C/T polymorphisms with breast cancer risk. In the subgroup analysis, we observed that the FAS-1377G/A and FASL-844C/T polymorphisms were associated with breast cancer risk in Chinese but not Whites; we still did not observed association of the FAS-670A/G polymorphism with breast cancer risk. Our meta-analysis revealed that FAS-1377G>A polymorphism was associated with an increased risk of breast cancer. FASL-844C>T polymorphism might be associated with a reduced breast cancer risk in Chinese. However, FAS-670A/G had no any effect on breast carcinogenesis. © 2013 International Society of Oncology and BioMarkers (ISOBM).
CITATION STYLE
Wang, Z., Gu, J., Nie, W., Xu, J., Huang, G., & Guan, X. (2014). Quantitative assessment of the association between three polymorphisms in FAS and FASL gene and breast cancer risk. Tumor Biology, 35(4), 3035–3039. https://doi.org/10.1007/s13277-013-1392-9
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