Similar to NUMB, the EMT negative regulators GATA3 and FOXA1 had significantly lower expression in the BLBC subtypes, ER-negative and higher histological grade breast cancer patients, while the EMT inducers FOXC1, FOXC2 and SNAI1 mimicked the expression profiles of Notch1 (Supplementary Figure S6). Here, FOXC1 is linked to breast cancer.