APEX1 and urinary bladder cancer: The subset of bladder cancer dataset contained 7 SNPs, XRCC3 (rs861539), APE1 (rs3136820), XPD_751 (rs13181), XRCC1_399 (rs25487), XPD_312 (rs1799793), XRCC1_194 (rs1799782), XPC_PAT (rs2228001).