Sitravatinib (MGCD516) is an inhibitor targeting multiple RTKs involved in driving sarcoma cell growth, including c-Met, c-Kit, PDGFRα/β, PDGFR, and Axl.

Axl:1.5 nM, EphA3:1 nM, DDR2:0.5 nM, Mer:2 nM, VEGFR3/FLT4:2 nM

Sitravatinib (MGCD516) is an inhibitor of a closely related spectrum of RTKs including RET, the split RTKs (PDGFR, VEGFR, and KIT), DDR2, TRK family, MET, and AXL. Sitravatinib causes the marked blockade of phosphorylation of potential driver RTKs and induced potent anti-proliferative effects in vitro.

Sitravatinib (MGCD516) has antitumor activity in nonClinicalal cancer models harboring genetic alterations of sitravatinib targets, including the rearrangement of NTRK, RET, or CHR4q12 amplification. In vivo tumor xenografts, MGCD516 causes the significant suppression of tumor growth. Efficacy of MGCD516 is superior to imatinib and crizotinib, two other well-studied multi-kinase inhibitors with overlapping target specificities, both in vitro and in vivo.

Cell lines: DDLS,LS141,and MPNST. Concentrations: 62.5,125,250,500,1000,2000 nM2,000-3,000 cells were plated in 96-well plates in RPMI/DME media with 10% FBS and then treated with the indicated drugs the next day.After 72 hours,media was replaced with 100 μL of media with 10% serum and 10% CCK-8 solution.After 1 hour,the optical density was read at 450 nm to determine viability.Background values from negative control wells without cells were subtracted for final sample quantification.Data was plotted as % cell viability compared to DMSO control.

Animal Models: ICR/SCID mice. Formulation: 0.5% hydroxypropyl methylcellulose (HPMC) and 0.1% Tween-80 solution (pH 1.4). Dosages: 15 mg/kg. Administration: p.o.