Gluetacs Therapeutics (Shanghai) Co. Ltd. has described proteolysis targeting chimera (PROTAC) compounds comprising E3 ubiquitin ligase binding moiety covalently linked to a Bruton tyrosine kinase (BTK) and eukaryotic peptide chain release factor GTP-binding subunit ERF3A (GSPT1) targeting moiety through a linker reported to be useful for the treatment of cancer, anemia, transplant rejection, neurodegeneration, infections, autoimmune, inflammatory and metabolic disorders.