KRAS G12D inhibitor 14 is a potent KRAS G12D inhibitor with a KD of 33 nM for binding to KRAS G12D protein. KRAS G12D inhibitor 14 decreases the active form of KRAS G12D (KRAS G12D-GTP) but not KRAS G13D[1].
KRAS G12D inhibitor 14 (compound KD-8) shows antiproliferative activity with an IC50 of 2.1 μM against three KRAS G12D-mutated cells (Panc1, SW1990 and CT26). KRAS G12D inhibitor 14 decreases the active form of KRAS (KRAS-GTP) in KRAS G12D mutated cancer cell lines (CT26 and SW1990) but not in KRAS G13D mutated cancer cell lines (HCT116). KD-8 also causes efficient apoptosis of SW1990 and CT26 cancer cells. KRAS G12D inhibitor 14 down-regulates the phosphorylated Raf and Erk in CT26 and SW1990 cancer cell lines but not in HeLa cells (KRAS WT)[1].
KRAS G12D inhibitor 14 (compound KD-8) (40 mg/kg or 60 mg/kg; i.p.) exhibits significant antitumor efficacy in a CT26 tumor model with a tumor growth inhibition (TGI) of 42% or 53% without causing apparent toxicity[1].
[1]. Li L, et al. Discovery of Thieno[2,3-d]pyrimidine-based KRAS G12D inhibitors as potential anticancer agents via combinatorial virtual screening. Eur J Med Chem. 2022;233:114243.