YAP1 and breast cancer: The phosphorylated YAP then moves from the cytosol to the nucleus, where it promotes the expression of genes that are tangled with contact inhibition of BC stem cells, including ankyrin repeat domain 1 (ANKRD1), connective tissue growth factor (CTGF), cysteine-rich angiogenic inducer 61 (Cyr61/CCN1), and inhibin βA (INHBA) [77].