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Lenvatinib mesylate (E7080 mesylate), an oral, multi-targeted tyrosine kinase inhibitor that inhibits VEGFR1-3, FGFR1-4, PDGFR, KIT, and RET, shows potent antitumor activities[1][2]. VEGFR1|22 nM (IC50)|VEGFR2|4 nM (IC50)|VEGFR3|5.2 nM (IC50)|FGFR1|46 nM (IC50)|FGFR2 FGFR3 FGFR4 PDGFRα|51 nM (IC50)|PDGFRβ|39 nM (IC50)|c-Kit|100 nM (IC50)|RET

Lenvatinib mesylate (E7080 mesylate) has IC50s of 4, 5.2, 22 nM for VEGFR2(KDR), VEGFR3(Flt-4), and VEGFR1/Flt-1, respectively. Lenvatinib inhibits PDGFRα, PDGFRβ, FGFR1, and KIT with IC50s of 51, 39, 46, 100 nM, respectively[3].

Lenvatinib mesylate (E7080 mesylate) (100 mg/kg, p.o.) is administeredand bevacizumab significantly inhibits local tumor growth at the m.f.p., and at the end of treatment, Lenvatinib mesylate also significantly inhibits metastasis to both regional lymph nodes and distant lung[3].Lenvatinib mesylate (E7080 mesylate) inhibits the growth of H146 tumor at 30 and 100 mg/kg (BID, QDx21) in a dose-dependent manner and causes tumor regression at 100 mg/kg in H146 xenograft model. IHC analysis with anti-CD31 antibody shows that lenvatinib at 100 mg/kg decreases microvessel density more than anti-VEGF antibody and imatinib treatment[4].

[1]. Kudo M, et al. Lenvatinib versus sorafenib in first-line treatment of patients with unresectable hepatocellularcarcinoma: a randomised phase 3 non-inferiority trial. Lancet. 2018 Mar 24;391(10126):1163-1173. [2]. Suyama K, et al. Lenvatinib: A Promising Molecular Targeted Agent for Multiple Cancers. Cancer Control. 2018 Jan-Dec;25(1):1073274818789361. [3]. 3.Matsui J, et al. Multi-kinase inhibitor E7080 suppresses lymph node and lung metastases of human mammary breast tumor MDA-MB-231 via inhibition of vascular endothelial growth factor-receptor (VEGF-R) 2 and VEGF-R3 kinase. Clin Cancer Res. 2008, 14(17),545. [4]. Matsui J, et al. E7080, a novel inhibitor that targets multiple kinases, has potent antitumor activities against stem cell factor producing human small cell lung cancer H146, based on angiogenesis inhibition. Int J Cancer. 2008, 122(3), 664-671.

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