Previous studies have reported that human Rad17 is overexpressed in diverse cancers, including colon carcinoma, breast cancer, pancreatic cancer, gastric cancer and non‐small‐cell lung cancer (Bao et al., 1999; Fredebohm et al., 2013; Sasaki et al., 2001; Zhou et al., 2013). This evidence concerns the gene RAD17 and breast cancer.