TF and breast cancer: Two additional rich resources have recently been reported; using genomic DNase-I footprinting integrated with TF-recognition sequences, condensed onto a common sequence axis for closely related TF family members, Vierstra et al. have generated a high-resolution genome-wide consensus TF-footprint index in 243 human cell and tissue types, including a breast cancer cell line (T-47D), a normal mammary epithelial cell line (MCF10a) and normal mammary fibroblasts [38].