Fifty two percent of tumours had high RAD51 mRNA expression, which was significantly associated with aggressive clinicopathological features (Supplementary Table 1), including diagnosis at younger age, high histological grade, high proliferation index, HER2-overexpression, absence of hormonal receptors (ER/PR), presence of basal like phenotypes and triple-negative phenotypes (Supplementary Table 1). This evidence concerns the gene NR4A1 and neoplasm.