NFKB1 and glioblastoma: In contrast to unmodified NK-92 cells, which did not show any NFκB-driven EGFP upregulation after cocultivation with primary GBM cells, a 13-fold and twofold higher EGFP expression was induced by NFκBmIL2.EGFP.GD2CAR- and NFκBsyn.EGFP.GD2CAR-modified NK92 cells after antigen recognition and GD2CAR signal transduction (Figure 3C).