CG428

CG428 is a potent and selective tropomyosin receptor kinase (TRK) PROTAC degrader that has anti-tumor activity. CG428 reduces levels of the tropomyosin 3 (TPM3) -TRKA fusion protein in KM12 colorectal carcinoma cells (DC50 = 0.36 nM) and inhibits downstream PLCγ1phosphorylation (IC50 = 0.33 nM). CG428 has a higher binding affinity for TRKA than TRKB and TRKC (Kd = 1 nM, 28 nM and 4.2 nM, respectively). In addition, CG428 effectively inhibits KM12 cell growth (IC50 = 2.9 nM). (Pink: TRK inhibitor ; Black: linker (HY-W067489) ; Blue: CRBN Ligand (HY-41547) )