Of note, when we analysed the ENCODE data of gene promoters in MCF7 breast cancer cells that also bind BRCA2 (BRCA1 antibody is not reported in the ENCODE database) and Kaiso, we identified a generous list of genes, though fewer than co-bind gene promoters in HCT116 cells (electronic supplementary material, table S3A). Here, BRCA2 is linked to breast cancer.