Ensartinib (X-396) is a potent and dual ALK/MET inhibitor with IC50s of <0.4 nM and 0.74 nM, respectively. The ability of Ensartinib (X-396) to inhibit the growth of different cancer cell lines harboring ALK fusions or point mutations is tested. Ensartinib is potent in H3122 lung cancer cells harboring EML4-ALK E13;A20 (IC50: 15nM). Ensartinib is also potent in H2228 lung cancer cells harboring EML4-ALK E6a/b; A20 (IC50: 45 nM). Furthermore, X-376 is potent in SUDHL-1 lymphoma cells harboring NPM-ALK (IC50: 9 nM). X-376 also inhibits SY5Y neuroblastoma cells harboring ALK F1174L, MKN-45 gastric carcinoma cells harboring MET dependent, HepG2 cells and PC-9 lung cancer cell lines harboring EGFR exon 19 del with IC50s of 68 nM, 156 nM, 9.644 μM and 2.989 μM, respectively[1]. The effects of Ensartinib (X-396) in vivo against H3122 xenografts are examined. A pharmacokinetic study reveals that Ensartinib shows substantial bioavailability and moderate half-lives in vivo. Nude mice harboring H3122 xenografts are treated with Ensartinib at 25mg/kg bid. Ensartinib significantly delays the growth of tumors compared to vehicle alone. In the xenograft experiments, Ensartinib appears well-tolerated in vivo. Mouse weight is unaffected by Ensartinib treatment. Drug-treated mice appear healthy and do not display any signs of compound related toxicity. To further assess potential side effects of Ensartinib, additional systemic toxicity and toxico-kinetic studies are performed in Sprague Dawley (SD) rats. Following 10 days of repeated oral administration of Ensartinib at 20, 40, 80 mg/kg in SD rats, all animals survive to study termination. The no significant toxicity (NST) levels are determined to be 80mg/kg for Ensartinib. At NST levels, Ensartinib achieves an AUC of 66 μM×hr and a Cmax of 7.19 μM[1]. [1]. Lovly CM, et al. Insights into ALK-driven cancers revealed through development of novel ALK tyrosine kinaseinhibitors. Cancer Res. 2011 Jul 15;71(14):4920-31.

MET/PDGFRA-IN-1 (compound 8c) serves as an inhibitor of MET and PDGFRA proteins, displaying an IC50 of 36 μM against MET. It impedes MET phosphorylation, thereby promoting apoptosis, and curtails the proliferation of various MET-positive cell lines, with IC50 values of 15.3 μM for AsPc-1, 19.0 μM for EBC-1, 22.0 μM for MKN-45, 25.6 μM for Mia-Paca-2, 21.0 μM for HT-29, and 31.5 μM for K562 [1].

AMG-337 is an effective and highly specific ATP-competitive MET kinase inhibitor. In enzymatic assays, AMG-337(AMG337) inhibits MET kinase activity (IC50: < 5 nM).

PRO-6E is an orally active, Cereblon ligand-based PROTAC that promotes MET degradation, achieving up to 81.9% effectiveness at a concentration of 1 μM in MKN-45 cells. It demonstrates tumor growth inhibition both in vivo and in vitro, alongside inducing cell apoptosis and cell cycle arrest. Notably, its structure comprises a Cereblon ligand (blue), a linker (black), and an ALK/c-Met inhibitor Crizotinib component (pink). [1]

MET/PDGFRA-IN-2 (compound 8h) serves as an inhibitor of MET and PDGFRA proteins, promoting apoptosis in cells and impeding the proliferation of MET-positive cells with IC50 values of 9.7, 6.1, 12.0, 11.5, 8.6, and 34.4 μM for AsPc-1, EBC-1, MKN-45, Mia-Paca-2, HT-29, and K562 cells, respectively [1].

Antitumor Agent-90 exhibits cytotoxic effects against PC 14 and MKN 45 cells, indicating its potential utility in cancer research.

Supinoxin (RX-5902) is an orally active inhibitor of phosphorylated-p68 RNA helicase and a potent first-in-class anti-cancer agent. Supinoxin induces cell apoptosis and inhibits the growth of TNBC cancer cell lines (IC50s:10 nM - 20 nM).