Hangzhou Polymed Biopharmaceuticals Inc. has disclosed proteolysis targeting chimeric (PROTAC) compounds comprising cereblon (CRBN) ligands covalently bonded to an EGFR del19/Thr790Met/Cys797Ser triple mutant and/or EGFR Leu858Arg/Thr790Met/Cys797Ser triple mutant-targeting moiety through a linker reported to be useful for the treatment of cancer.