The mousePtenΔf:p53Δf tumors and most human claudin-low BC samples, butonly 1 of 6 p53Δf tumors, expressed high levels of the EMT inducers Twist1/2,Snail1/2 and Zeb1/2 (Fig2C; Supplementary Table S1C). Here, SNAI1 is linked to breast cancer.