MRTX849

KRAS G12C Inhibitor MRTX849 is an orally available, small molecule inhibitor that targets the oncogenic KRAS substitution mutation, G12C, with potential antineoplastic activity. Upon oral administration MRTX849 covalently binds to cytosine 12 within the switch II pocket of GDP-bound KRAS G12C, thereby inhibiting mutant KRAS-dependent signaling. KRAS, a member of the RAS family of oncogenes, serves an important role in cell signaling, division and differentiation. Mutations of KRAS may induce constitutive signal transduction leading to tumor cell growth, proliferation, invasion, and metastasis.
MRTX-849 was identified as a potent, selective, and covalent KRASG12C inhibitor that exhibits favourable drug-like properties, modifies mutant cysteine 12 in GDP-bound KRASG12C, and inhibits KRAS-dependent signalling. MRTX-849 demonstrated pronounced tumour regression in 17 of 26 (65%) KRASG12C-positive cell line- and patient-derived xenograft models from multiple tumour types, and objective responses have been observed in patients with KRASG12C-positive lung and colon adenocarcinomas[1].
Adagrasib is an orally available, potent, irreversible, small molecule inhibitor of KRAS G12C mutant isoform being developed by Mirati Therapeutics for the treatment of solid tumours harbouring KRAS G12C oncogenic driver mutation, including non-small cell lung cancer (NSCLC) and colorectal cancer (CRC).
Class: non-kinase; Treatment: KRAS(G12C) NSCLC; Other name: MRTX849; Elimination half-life: 24 h; Protein binding = 98.3%