Using a case-control design, we analyzed associations between BC risk and the following SNPs: rs832583 (MAP3K1), rs16865677 (SF3B1), rs3819122 (SMAD4), rs12456284 (SMAD4), rs75704921 (ARID2), rs2229032 (ATR), rs3735156 (KMT2C), rs2276738 (MAP3K13), rs2293206 (MAP3K13), rs4075943 (MAP3K13), rs13091808 (MAP3K13), rs178831 (NCOR1), and rs3759173 (TBX3). This evidence concerns the gene ARID2 and breast cancer.