FLT

Nintedanib (Intedanib) is a triple vascular kinase inhibitor that inhibits VEGFR1, VEGFR2, and VEGFR3 (IC50=34 13 13 nM), FGFR1, FGFR2, and FGFR3 (IC50=69 37 108 nM), PDGFRα, and PDGFRβ (IC50=59 65 nM). Nintedanib has antitumor activity and inhibits tumor growth by inhibiting angiogenesis.

Fostamatinib (R788)(IC50 of 41 nM), which is a prodrug of the active metabolite R406, is a Syk inhibitor. It does not work on Lyn.

Gilteritinib (ASP2215) is a potent inhibitor of FMS-related tyrosine kinase 3 (FLT3) and AXL tyrosine kinase receptors (IC50 = 0.29 nM and <1 nM, respectively). In preclinical studies, gilteritinib demonstrated strong antileukemic and antitumor effects. Gilteritinib is currently in several Phase 3 clinical trials for acute myeloid leukemia.

Sorafenib (Bay 43-9006) is a multikinase inhibitor that targets Raf-1, B-Raf, VEGFR2, VEGFR3, VEGFR4, PDGFRβ, FLT3, c-Kit, and others (IC50=6/22/90/15/20/20/57/58 nM) with oral activity. It exhibits antitumor properties and can induce autophagy, apoptosis, and agonistic iron death.

Pexidartinib (PLX-3397) is a capsule containing a small-molecule receptor tyrosine kinase (RTK) inhibitor targeting KIT, CSF1R, and FLT3, with potential antineoplastic activity.

Fostamatinib Disodium (R788 Disodium) is an orally available Syk kinase inhibitor with potential anti-inflammatory and immunomodulatory activities.

HM43239 is an orally active and selective FLT3 inhibitor with IC 50 s of 1.1 nM, 1.8 nM and 1.0 nM for FLT3 WT, FLT3 internal tandem duplication (ITD) and FLT3 D835Y kinases, respectively. HM43239 directly inhibits the kinase activity of FLT3 as a reversible Type I inhibitor and effectively modulates downstream p-STAT5 and p-ERK. HM43239 also demonstrated inhibition of SYK, JAK1/2 and TAK1. HM43239 inhibits the proliferation and induces the apoptosis of leukemic cells [1] [2] [3].

DCC-2036 (Rebastinib (DCC-2036)) is a conformational control Bcr-Abl inhibitor for Abl1(WT, IC50: 0.8 nM) and Abl1(T315I, IC50: 4 nM), also inhibits LYN, SRC, HCK, FGR, FLT3, KDR, and Tie-2, and low activity to c-Kit. Rebastinib aimed at the Angiopoietin2-Tie2 pathway.

NCT-503 is a phosphoglycerate dehydrogenase (PHGDH) inhibitor (IC50=2.5 µM) with no activity against other dehydrogenases. NCT-503 has antitumor activity and inhibits the growth of PHGDH-dependent tumors.

UNC2025 (mrx-6313)(IC50 of 0.74 nM and 0.8 nM) is a potent and orally bioavailable dual MER/FLT3 inhibitor. UNC-2025 is about 20-fold selectivity higher than Axl and Tyro3.

JI6 (JAK3 Inhibitor VI) is a potent, selective and orally active FLT3 inhibitor. JI6 exhibits IC50s of ∼40, 8, and 4 nM for FLT3-WT, FLT3-D835Y, and FLT3-D835H, respectively. JI6 also inhibits c-Kit and JAK3, with IC50s of ∼500 and ∼250 nM, respectively. JI6 has research value in acute myeloid leukemia.

Fedratinib (TG-101348) (TG101348) is an ATP-competitive inhibitor of JAK2 (IC50: 3 nM) with significantly less potent activity against JAK3.

SGI-7079 is a new selective Axl inhibitor. SGI-7079 can be a dose-dependent manner inhibited growth of tumors. It is also a potential therapeutic target for EGFR inhibitor resistance.

Brigatinib (AP-26113) is a highly potent and selective inhibitor of ALK.

JAK3-IN-14 is a potent, selective and orally active FLT3 inhibitor, with IC50s of ∼40, 8, and 4 nM for FLT3-WT, FLT3-D835Y, and FLT3-D835H, respectively.

Cediranib (AZD2171) (AZD2171) is a highly potent (IC50 < 1 nmol L) ATP-competitive inhibitor of recombinant KDR tyrosine kinase in vitro, also inhibits Flt1 4 (IC50: 5 nM ≤3 nM), similar activity against PDGFRβ and c-Kit, selective more for VEGFR than PDGFR-α (36-fold), CSF-1R (110-fold), and Flt3 (1000-fold) in HUVEC cells.

Sorafenib tosylate (Bay 43-9006) is a potent multikinase inhibitor (IC50s: 6 20 22 nM for Raf-1 VEGFR-3 B-Raf).

Ilorasertib (ABT-348) (ABT-348) is an ATP-competitive multitargeted kinase inhibitor, which inhibits Aurora A/Aurora B/Aurora C (IC50s: 120 nM/7 nM/1 nM). It also suppresses RET tyrosine kinase, PDGFRβ, and Flt1 (IC50s: 7 nM, 3 nM, and 32 nM).

SGI-1776 (Pim-Kinase Inhibitor IX) has been used in trials studying the treatment of Prostate Cancer, Non-Hodgkins Lymphoma, and Relapsed Refractory Leukemias.

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

PHI-101 is an orally available and selective checkpoint kinase 2 (Chk2) inhibitor for the study of refractory acute myelogenous leukemia (AML) and ovarian cancer.

Gilteritinib hemifumarate (ASP2215 hemifumarate) is a potent ATP-competitive dual FLT3 (IC50: 0.29 nM) and AXL (IC50: 0.73 nM) inhibitor for the treatment of relapsed or refractory FLT3 mutant AML.

Pacritinib (SB1518) (SB1518) is an effective and specific inhibitor of JAK2 and FLT3 (IC50: 23 22 nM, in cell-free assays).

Lestaurtinib (CEP 701) is an orally available and selective inhibitor of FMS-like tyrosine kinase-3 (FLT3, IC50: 0.9 nM), which inhibits FLT3 autophosphorylation in vitro.Lestaurtinib promotes the expression of c-MYC, inhibits the phosphorylation of RPTKs, and has high affinity for TrkA and JAK2. Lestaurtinib promotes c-MYC expression, inhibits phosphorylation of RPTKs, has a high affinity for TrkA and JAK2, induces apoptosis and cell growth arrest, and can be used to study leukemia.