It has been reported that miR-155 binds FOXO-3a 3′-UTR, regulating drug response, and is also implicated in the loss of CCAAT/enhancer-binding protein beta (C/EBP-β) activity and TGF-β-induced EMT, invasion, and metastasis in breast cancer cells [94,95]. The gene discussed is CEBPB; the disease is breast cancer.