(S) PFI-2 (hydrochloride) (10 μM; 2 h) did not cause a dose-dependent increase in nuclear YAP in MCF7 cells, nor did it enhance the expression of YAP target genes AREG and CYR61; And (R) - PFI-2 can increase the expression of YAP, AREG, and CYR61 [1].