IL4 and neoplasm: However, following stimulation with α-c-myc tag monoclonal antibody or the tumor cells 24JKERB, we detected a range of cytokines, including IL-4, IL-2, IL-17A, TNF-α, IL-6 and IFN-γ from CAR T cells, while no significant response was observed from WT T cells (Figure 2A–2F).