GTF2H1 and breast cancer: Rs4150667 in GTF2H1 is associated with an increased risk for BC in the Caucasian race [173], rs1805335 in RAD23B increases the risk in the Spanish population [176] and rs2228000 [189–193] and rs2228001 [155, 187, 193–195] in XPC are positively associated with BC in all study populations.