osis (phagocytosis or ADCP; Figure 1b). This also includes mAbs that may harness the inhibitory action of FcγRIIb to modulate the proinflammatory responses of immunoreceptor tyrosine activation motif (ITAM)‐dependent receptor signaling complexes (Figure 1c). For other mAbs, FcγR may play a secondary role, such as the removal or “sweeping” of all immune complexes formed by cytokine or virus‐specific neutralizing antibodies or of opsonized fragments of lysed target cells which in antigen‐p