BAY 593 functions as an inhibitor of geranylgeranyltransferase-I (GGTase-I), effectively preventing the activation of Rho-GTPases and consequently inactivating YAP1/TAZ signaling pathways. It has been shown to inhibit tumor growth dose-dependently in xenograft mouse models, exhibiting IC50 values of 38.4 nM in MT-1080 cells and 564 nM in MDA-MB-231 cells, as well as in PXF 541 xenografts.