SNS-314 is a pan-Aurora kinase inhibitor (IC50s = 9, 31, and 3.4 nM for Aurora A, B, and C, respectively). In a panel of 219 kinases, SNS-314 also inhibits TRKB, TRKA, FLT4, FMS, DDR2, AXL, and C-RAF (IC50s = 5-100 nM). SNS-314 inhibits Aurora B phosphorylation of histone H3 in HCT116 human colorectal carcinoma cells in vitro (EC50 = <16 nM) and in a mouse xenograft model at a dose of 50 mg/kg. It also inhibits tumor growth in A2780 ovarian, A375 melanoma, H1299 lung, MDA-MB-231 breast, and PC3 prostate cancer mouse xenograft models when administered biweekly for six weeks at a dose of 170 mg/kg.
