MCB-294 is a dual-state pan-KRAS inhibitor that selectively inhibits KRAS over NRAS and HRAS. MCB-294 capable of binding both the active (GTP-bound) and inactive (GDP-bound) forms of KRAS with Kds of approximately 1 pM and 10 nM, respectively. MCB-294 broadly impairs the growth of hTERT-HPNE cells expressing G12D, G12C, G12V, G12S, G13D, and wild-type KRAS, with IC50s of approximately 700 nM. MCB-294 induces irreversible apoptosis in KRAS-mutated tumors. MCB-294 effectively suppress KRASG12C inhibitor-resistant cancer cells and remodel the tumor immune microenvironment. MCB-294 can be used for the study of pancreatic cancer, colorectal cancer and lung cancer.
