These include E2F1, CEBPB, GATA3, Max, ELF1, GABP, and FOXA1 for BRCA1 and E2F1, MYC, ELF1, GABP, Max, and PML for BRCA2. Interestingly, a number of these factors have previously been implicated in BC. This evidence concerns the gene E2F1 and breast cancer.