Bristol Myers Squibb Co. has synthesized proteolysis targeting chimera (PROTAC) compounds comprising a cereblon (CRBN) E3 ubiquitin ligase-binding moiety coupled to a DNA-binding protein Ikaros (IKZF1)-, zinc finger protein Helios (IKZF2)-, Aiolos (IKZF3)- and Eos (IKZF4)-targeting moieties through a linker.