Pralsetinib is a selective and next-generation RET inhibitor (IC50: 0.3-0.4 nM for WT RET, RET mutants V804L, V804M, M918T, and CCDC6-RET fusion). BLU-667 is an effective and selective inhibitor of RET mutations, fusions, and predicted resistant mutants.
Zeteletinib (BOS-172738; DS-5010) is a highly potent and selective orally active inhibitor of the RET kinase. It demonstrates nanomolar potency against RET while exhibiting over 300-fold selectivity against VEGFR2. Zeteletinib exhibits remarkable efficacy against the wild-type RET, RETV804M L gatekeeper mutants, as well as the frequently occurring oncogenic RET mutation M918T. Its antitumor activity is potent.
RET-IN-4 is a highly effective and specific RET inhibitor that can be administered orally. It demonstrates remarkable potency, with IC50 values of 1.29 nM, 1.97 nM, and 0.99 nM for inhibiting RET variants including RET (WT), RET (V804M), and RET (M918T), respectively. Moreover, RET-IN-4 exhibits superior selectivity towards kinases JAK2 (IC50 of 4.4 nM) and FLT3 (IC50 of 30.8 nM). Additionally, RET-IN-4 possesses pronounced anticancer properties.
Zeteletinib hemiadipate (BOS-172738; DS-5010) is an orally active compound that functions as a selective inhibitor of RET kinase. It exhibits nanomolar potency against RET and a 300-fold selectivity towards VEGFR2. Notably, Zeteletinib hemiadipate demonstrates exceptional effectiveness against various forms of RET, including the wild type, RETV804M L gatekeeper mutants, and the oncogenic RET mutation M918T. Additionally, Zeteletinib hemiadipate exerts potent antitumor effects.