C/EBPβ (LAP1) can promote mammary epithelial cell differentiation [36], whereas C/EBPβ (LAP2) transforms normal mammary epithelial cells and induces EMT in culture [24]; LIP also promotes EMT in breast cancer and esophageal squamous cell carcinomas [18, 21, 24]. This evidence concerns the gene CEBPB and breast cancer.