TNFRSF4 and neoplasm: To boost their anti‐tumour efficacy, various intracellular domains, including different CDs (CD28, 4‐1BB, OX40, TLR2, etc.)and SDs (CD3ζ, CD3ζ variants, FcεRIγ, etc.), have been developed.5, 6, 7, 8, 9