GPT and neoplasm: As shown in Figure 4, the anti-CD16 antibody significantly decreased ADCC activity mediated by NEO-201 of both untreated (p < 0.05) and ALT-803-treated NK cells (p < 0.001), confirming that increased tumor cell lysis in presence of NEO-201 is mediated by ADCC and that ALT-803 enhances specifically NEO-201-mediated ADCC.