“…According to the inclusion criteria, a total of 26 data sets (6 for XPD Asp312Asn [8,9,11,12,14,15], 7 for XPD Lys751Gln [8,11,12,14,15,16,17], and 9 for hOGG1 Ser326Cys [8,9,10,18,19,20,21,22,23]) were identified from 15 eligible papers. In total, 5,765 cases and 6,270 controls (Asp312Asn, 2,714 cases and 3,307 controls; Lys751Gln, 3,271 cases and 3,578 controls, and Ser326Cys, 3,951 cases and 4,043 controls) were included in our study.…”