T2 cells pulsed with or without pIRS2, WT-IRS2, or control HLA-A*02:01-binding Ewing’s sarcoma peptide (EW), were incubated with human PBMCs used as effectors, in the presence or absence of the 6B1 BisAbs or control hIgG1 isotype (Figure 5). Here, HLA-A is linked to Ewing sarcoma.