IL4 and rheumatoid arthritis: In one of the Rheumavax studies, GM-CSF+IL-4 culture medium was supplemented with the NF-κB inhibitor Bay 11-7082 and then the cells were exposed to citrullinated peptides of aggrecan, vimentin, collagen type II and Aα and Bβ fibrinogen, which are putative RA autoantigens (59).