Background: The aim of this study was to explore the association between single nucleotide polymorphisms (SNPs) in the rs120963, rs152451, rs249935, rs447529, rs8053188, and rs16940342 loci in the PALB2 gene and breast cancer risk.
Methods: Studies investigating the association between SNPs in the PALB2 gene and breast cancer susceptibility were retrieved from the PubMed, Embase, Web of Science, CNKI (Chinese National Knowledge Infrastructure), WanFang, and CBM (China Biology Medicine) databases. Eligible studies were screened according to inclusion/exclusion criteria and principles of quality evaluation. Meta-analysis was performed using Stata 14.0 software. Odds ratios with their corresponding 95% confidence intervals were pooled to assess the association between SNPs in the PALB2 gene loci rs249935, rs447529, rs8053188, rs16940342, rs152451, and rs120963 and breast cancer susceptibility.
Results: A total of 9 case-control studies were eligible for this meta-analysis. SNPs in the PALB2 gene loci rs120963, rs249935, and rs447529 were significantly associated with an increased or decreased risk of breast cancer. No significant association was detected for rs152451, rs8053188, and rs16940342 under 4 genetic models.
Conclusion: The results of this study suggest that SNPs in the PALB2 loci rs120963/rs249935/rs447529, but not in the other 3 loci (rs152451/rs8053188/rs16940342), may contribute to breast cancer susceptibility.
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