To test the similarity of our LATS-null signature to that of tumors derived from the inactivation of another breast tumor suppressor, Brca1, we derived upregulated and downregulated signatures for the Brca1f/f; p53f/+; Blg-Cre model of mouse basal-like breast cancer using data from a previous study8. Here, BRCA1 is linked to breast carcinoma.