flt3-itd

Tandutinib (CT53518) (MLN518, CT53518), an effective FLT3 antagonist (IC50: 0.22 μM), can also inhibit c-Kit and PDGFR, 15-20 fold higher potency for FLT3 versus CSF-1R and >100-fold selectivity for the same target versus FGFR, EGFR, and KDR.

FLT3-ITD-IN-2 (Compound A1) is an inhibitor of the FLT3-ITD kinase, exhibiting an IC50 of 2.12 nM. It effectively suppresses the proliferation of the FLT3-dependent human AML cell line MOLM-13, with an IC50 of 25.65 nM. FLT3-ITD-IN-2 demonstrates antitumor activity against acute myeloid leukemia.

PDGFRα FLT3-ITD-IN-3 (Compound 18d) is a potent inhibitor of PDGFRα (IC50: 0.153 μM) and FLT3 (IC50: 0.004 μM), with potential applications in the study of acute myeloid leukaemia or chronic eosinophilic leukaemia.

PDGFRα FLT3-ITD-IN-2 is a potent inhibitor of PDGFRα (IC50>20 μM) and FLT3 (IC50: 0.004 μM). PDGFRα FLT3-ITD-IN-2 has shown investigational potential in acute myeloid leukemia or chronic eosinophilic leukemia.

PDGFRα FLT3-ITD-IN-1 are potent inhibitors of PDGFRα FLT3, and their IC50 values are greater than 0.036 and 0.003 μM, respectively. PDGFRα FLT3-ITD-IN-1 exhibits investigational potential in acute myeloid leukemia or chronic eosinophilic leukemia.

FLT3 ITD-IN-5 (Example 6) is an orally active inhibitor of both FLT3 and FLT3-ITD, exhibiting IC50 values of 0.088 nM and 0.348 nM, respectively. This compound is utilized in cancer research.

FLT3 ITD-IN-3 (Compound 19) is a potent inhibitor of FLT3-ITD, demonstrating efficacy against FLT3D835Y (IC50: 0.3 nM), FLT3 (IC50: 0.4 nM), and FLT3-ITD (IC50: 0.9 nM). It significantly inhibits FLT3 phosphorylation and effectively suppresses the proliferation of AML cells.

FLT3 ITD-IN-1 (Compound 1) is a highly potent inhibitor of FLT3 internal tandem duplications (FLT3-ITD) with IC50 values of 38.2 nM for FLT3 and 144.1 nM for FLT3-ITD, and shows exceptional antiproliferative activities against several acute myeloid leukemia cell lines [1].

FLT3 ITD-IN-4 (Compound 16) is a selective inhibitor of FLT3 internal tandem repeat mutations (FLT3-ITD) with an IC50 of 2.3 nM and is applicable for studying acute myeloid leukemia.

FLT3 ITD-IN-2 is a potent inhibitor of FLT3-ITD and is able to act on FLT3D835Y (IC50: 0.3 nM), FLT3 (IC50: 0.4 nM) and FLT3-ITD (IC50: 1.0 nM).FLT3 ITD-IN-2 effectively inhibits the phosphorylation of FLT3 and is able to effectively inhibit the proliferation of acute myeloid leukemia cells.

Quizartinib (AC220) is an inhibitor of FLT3 (Kd: 1.6 nM) and demonstrates high selectivity for FLT3 when tested against a panel of 227 additional kinases.

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].

GTP-14564 is a novel tyrosine kinase inhibitor that also inhibits wt-FLT3 and ITD-FLT3. GTP-14564 inhibits the growth of interleukin-3-independent Ba F1 expressing ITD-FLT3 at 3 μ m, whereas a 30-fold higher concentration of GTP-14564 is required to inhibit the FLT3 ligand-dependent growth (wt-FLT3) of Ba F3 expressing wild-type FLT3. F3 expressing wild-type FLT3 (wt-FLT3).

PROTAC FLT-3 degrader 1 is a PROTAC FLT-3 degrader of internal tandem duplication (ITD) with an IC50 of 0.6 nM and exhibits anti-proliferative activity.

CDDD11-8 is an orally administered, highly potent and selective CDK9 and FLT3-ITD inhibitor, with K i values of 8 nM and 13 nM, respectively. It effectively reduces the proliferation of leukemia cell lines, showing particular efficacy against those with the FLT3-ITD mutation [1] [2].

BIX02188 is a selective and potent MEK5 inhibitor that inhibits MEK5-induced apoptosis in cells expressing the oncogenic mutant FLT3-ITD.

LY2457546 is a potent and orally bioavailable inhibitor of multiple receptor tyrosine kinases involved in angiogenic and tumorigenic signalling. LY2457546 demonstrates potent activity against targets that include VEGFR2 (KDR), PDGFRβ, FLT-3, Tie-2 and members of the Eph family of receptors. In vivo, LY2457546 inhibited VEGF-driven autophosphorylation of lung KDR in the mouse and rat in a dose and concentration dependent manner. LY2457546 was well tolerated and exhibited efficacy in a 13762 syngeneic rat mammary tumor models. Additionally, LY2457546 caused complete regression of well-established tumors in an acute myelogenous leukemia (AML) FLT3-ITD mutant xenograft tumor model. The unique spectrum of target activity, potent in vivo anti-tumor efficacy in a variety of rodent and human solid tumor models, exquisite potency against a clinically relevant model of AML, and non-clinical safety profile justify the advancement of LY2457546 into clinical testing. (source: Invest New D......

Abivertinib, also known as AC0010 and Avitinib, is a third-generation EGFR tyrosine kinase inhibitor and BTK Inhibitor that demonstrated clinical efficacy and manageable adverse events (AEs). Abivertinib inhibits cell proliferation, reduces colony-forming capacity, and induces apoptosis and cell cycle arrest in AML cells, especially those harboring FLT3-ITD mutations. Abivertinib was also found to be more sensitive than ibrutinib in treating AML. Abivertinib may be a promising novel agent for AML, with potential for combination treatment with HHT.

FI-700 is a novel and potent FLT3 inhibitor with promising antileukemia activity. FI-700 showed a potent IC(50) value against FLT3 kinase at 20 nmol L in an in vitro kinase assay. FI-700 showed selective growth inhibition against mutant FLT3-expressing leukemia cell lines and primary acute myeloid leukemia cells, whereas it did not affect the FLT3 ligand (FL)-driven growth of Wt-FLT3-expressing cells. Oral administration of FI-700 induced the regression of tumors in a s.c. tumor xenograft model and increased the survival of mice in an i.v. transplanted model. Furthermore, FI-700 treatment eradicated FLT3 ITD-expressing leukemia cells, both in the peripheral blood and in the bone marrow. (Source: Clin Cancer Res. 2007 Aug 1;13(15 Pt 1):4575-82.)

PF15 TFA, a PROTAC targeting FLT3 kinase and CRBN, exhibits selective degradation of FLT3-ITD with a DC50 of 76.7 nM. The compound potently suppresses proliferation in FLT3-ITD-positive cells, reduces phosphorylation levels of FLT3 and STAT5, and demonstrates inhibition of tumor growth in murine leukemia models [1].

FLT3-IN-23 (compound 15), a potent inhibitor of FMS-like tyrosine kinase 3 (FLT3), exhibits an IC 50 value of 7.42 nM and demonstrates antiproliferative effects against BaF3 cells harboring diverse FLT3-TKD and FLT3-ITD-TKD mutations [1].

G-749 hydrochloride is a novel FLT3 inhibitor that showed potent and sustained inhibition of the FLT3 wild type and mutants including FLT3-ITD, FLT3-D835Y, FLT3-ITD N676D, and FLT3-ITD F691L in cellular assays.

HDAC10-IN-2 (compound 10c) is a potent and highly selective HDAC10 inhibitor (IC50 = 20 nM) that regulates autophagy in aggressive FLT3-ITD positive acute myeloid leukemia cells [1].

SILA-123, an inhibitor of FLT3 (FLT3-WT: IC50=2.1 nM; FLT3-ITD: IC50=1.0 nM), induces cell apoptosis by hindering the cell cycle progression at the G0 G1 phase through the suppression of FLT3 phosphorylation and its downstream signaling pathways. This compound is utilized in the study of acute myeloid leukemia.