When the different clinicopathological data were analysed concerning the RNA levels of the cancer-critical genes, an interesting association was found between the oral contraceptive administration and RNA levels of TP53 (p = 0.015, Fig 3, Table 1), YBX1 (p = 0.020, Fig 4b, Table 2), CCND1 (p = 0.013, Fig 5, Table 3), FUS (p = 0.020, Fig 6, Table 4) and PTBP1 (p = 0.010, Fig 7, Table 5). Here, YBX1 is linked to cancer.