mutant primary

BI-4020 is a fourth-generation, orally active, and non-covalent inhibitor of EGFR tyrosine kinase. It exhibits activity against the triple mutant EGFR del19 T790M C797S variant (IC50=0.2 nM in BaF3 cell lines), the double mutant EGFR del19 T790M and primary mutant EGFR del19 (IC50=1 nM), and EGFR wt (IC50=190 nM). BI-4020 also shows high kinome selectivity and good DMPK properties.

Kevetrin hydrochloride (4-Isothioureidobutyronitrile hydrochloride) is a small molecule and activator of the tumor suppressor protein p53, with potential antineoplastic activity.

CBR-2092 is a DNA-directed RNA polymerase and DNA topoisomerase inhibitor. CBR-2092 exhibited rifampin-like potency as an inhibitor of RNA polymerase, was an equipotent (balanced) inhibitor of DNA gyrase and DNA topoisomerase IV, and retained activity against a prevalent quinolone-resistant variant. Studies of mutant strains that exhibited reduced susceptibility to CBR-2092 further substantiated RNA polymerase as the primary cellular target of CBR-2092, with DNA gyrase and DNA topoisomerase IV being secondary and tertiary targets, respectively, in strains exhibiting preexisting rifampin resistance.

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.)

AZD3229 Tosylate is a highly potent inhibitor targeting mutant forms of the pan-KIT enzyme, with a primary application in the treatment of gastrointestinal stromal tumors (GISTs).

NX-2127 (ETX2514 Triethylamine) is an orally active BTK inhibitor that induces degradation of mutant BTKC481S in cells.NX-2127 has potent antiproliferative activity and inhibits the proliferation of BTKC481S mutant TMD8 cells.NX-2127 potently catalyzes the degradation of Ikaros (IKZF1) and Aiolos (IKZF3) at 25 nM and 54 nM, respectively. NX-2127 is associated with the immune system, stimulating T cell activation and increasing IL-2 production in primary human T cells.

IHMT-IDH1-053 (compound 16) is an irreversible inhibitor highly selective for the IDH1 R132H mutant, with an IC50 of 4.7 nM. It preferentially targets IDH1 mutants over wild-type IDH1 and IDH2, in both their wild-type and mutant forms. In 293T cells transfected with the IDH1 R132H mutant, IHMT-IDH1-053 reduces 2-hydroxyglutarate (2-HG) production with an IC50 of 28 nM. The compound binds to the R132H protein at an allosteric site near the NADPH binding region, forming a covalent linkage with Cys269. Additionally, IHMT-IDH1-053 inhibits the growth of both the HT1080 cell line and primary acute myeloid leukemia (AML) cells harboring IDH1 R132 mutations [1].

UCM-13369 (Compound 4b) serves as an NPM1 inhibitor, effectively downregulating the pathway linked to mutant NPM1 C+ by specifically targeting the C-terminal DNA-binding domain of NPM1 C+. It induces apoptosis in AML cell lines and primary cells, making it a valuable tool for AML research [1].