CCND1 and cervical cancer: DNA samples representing the cervical cancer case and control cohorts were genotyped for detection of different types of gene polymorphisms: deletions GSTM1 and GSTT1, XRCC1 Arg194Trp and Arg399Gln, XRCC3 Thr241Met, TP53 Arg72Pro, and CCND1 A870G.