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

FLT3:2.1 nM, ROS1:1.9 nM, ALK:0.37 nM, IGF-1R:24.9 nM, EGFR (C797S/del19):39.9 nM

Beyond ALK, IGF1R, and InsR, brigatinib also potently inhibits FLT3 and ROS1 with IC50 values of 2.1 and 1.9 nM, respectively. It does not show significant activity toward c-Met or Ron up to 1 μM[1]. Brigatinib overcomes the resistance of EGFR-triple-mutant and the activity depends on ATP-competitive manner with less affection to wild-type EGFR[2].

Mouse PK parameters for Brigatinib following oral dosing (10 mg/kg): Cmax=448 ng/mL,t1/2=5.8 h. And in CD rats, after dosing at 3 mg/kg i.v, CL=0.46 L/(h·kg), t1/2=4.8 h, Vss=7.8 L/kg; Dosed at 10 mg/kg p.o, Cmax=305 ng/mL, tmax=4 h, t1/2=3.4 h, F%=52. Brigatinib demonstrates dose-dependent antitumor activity[1]. Brigatinib demonstrates growth inhibition activity in PC9 triple-mutant xenograft model and in combination with anti-EGFR antibody to potentiate the efficacy both in vitro and in vivo as shown in first-generation EGFR-TKI-resistant patients[2].

In vitro HotSpotSM kinase profiling of 289 kinases is performed. The assay is conducted in the presence of 10 μM [33P]-ATP, using brigatinib concentrations ranging from 0.05 nM to 1 μM.

All cell lines were used within 20 passages of the initial thaw. Following inhibitor treatment for 72 h, cell growth was assessed to determine the concentration that causes 50% inhibition of cell viability (IC50). (Only for Reference)

H2O: Insoluble

DMSO: 5.85 mg/mL (10.02 mM), Sonication is recommended.

Ethanol: 5.85 mg/mL (10.02 mM), Sonication is recommended.