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). The gene discussed is TBX3; the disease is breast cancer.