Sitravatinib is a multi-kinase inhibitor. It inhibits 35 kinases (IC50s = 0.5-5,550 nM) in a panel of 55 receptor tyrosine kinases (RTKs). Sitravatinib reduces proliferation of A-673, LPS141, MPNST, DDLS, and Saos-2 cancer cells (IC50s = 1,750, 340.1, 705.7, 266, and 1,830 nM, respectively) and decreases phosphorylation of insulin-like growth factor 1 receptor (IGF1-R), PDGFRβ, and Akt in these same cells when used at concentrations ranging from 62.5 to 4,000 nM. It decreases tumor growth in LPS141 and MPNST mouse xenograft models when administered at a dose of 15 mg/kg per day.
Sitravatinib, known as MGCD516, is a multikinase (MET, RET, AXL, NTRK1, or NTRK3 genes) inhibitor used in a phase 1/1b clinical trial (NCT02219711) for patients with advanced cancers (NCT02219711).
MGCD 516 is an intermediate used to prepare substituted thienopyridines as inhibitors of protein tyrosine kinase activity.
1) Parag?et al.?(2016)?Significant blockade of multiple receptor kinases by MGCD516 (Sitravatinib), a novel small molecule inhibitor, shows potent anti-tumor activity in preclinical models of sarcoma; Oncotarget?7?4093
2) Leal?et al.?(2017)?Evidence of clinical activity of sitravatinib in combination with nivolumab in NSCLC patients progressing on prior checkpoint inhibitors; J. Thorac. Oncol.?12?S1803
3) Du?et al.?(2018);?Sitravatinib potentiates immune checkpoint blockade in refractory cancer models; JCI Insight?3?124184
