RAD51 135G/C polymorphism and breast cancer risk: a meta-analysis from 21 studies
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Lin-Bo Gao Xin-Min Pan Li-Juan Li Wei-Bo Liang Yi Zhu Lu-Shun Zhang Yong-Gang Wei Ming Tang Lin Zhang
- چاپ و سال / کشور: 2010
Description
Growing evidence suggests that RAD51 plays a pivotal role in the repair of DNA double-strand breaks and the maintenance of genomic stability. A single nucleotide polymorphism, 135G/C, has been identified in the 50 untranslated region of the RAD51 gene and has been shown to influence gene transcription activity. Previous studies yielded conflicting results as to the association of 135G/C polymorphism with breast cancer. We aimed to assess the effect of 135G/C of RAD51 on breast cancer susceptibility with the use of a meta-analysis. We performed a metaanalysis of 21 published case–control studies up to April 2010. We found that the CC genotype was associated with a significantly increased risk of breast cancer when compared with the GG, CG, and CG/GG genotypes. Subgroup analyses showed that individuals carrying the CC genotype were associated with an elevated tumor risk in European populations and in sporadic breast cancer. After stratified analyses according to manuscript quality, the CC genotype was associated with a significantly increased risk of breast cancer compared with the CG genotype in studies of both higher and lower quality. However, significantly elevated risk was found in studies of higher quality, but not in studies of lower quality when homozygote and a recessive comparison model were tested. This meta-analysis indicates that RAD51 135G/C polymorphism may be identified as a susceptibility locus for breast cancer.
Breast Cancer Res Treat (2011) 125:827–835 DOI 10.1007/s10549-010-0995-8
