SOX9 and breast carcinoma: To explore the functional role of Sox9 in basal-like mammary carcinomas driven by the loss of LATS1/2, we introduced Sox9-floxed alleles40 in our Lats1/2f/f; lsl-EYFP; K8CreERT2 mouse model (Lats1/2f/f; Sox9f/f; lsl-EYFP; K8CreERT2).