After 4-h incubation with human iNKT cells, an average of 60 % of SKBR3 tumor cells was apoptotic when incubated with the tumor-targeted αGC/sCD1d-anti-HER2 fusion protein, while there was a similar background of tumor cell death with the untargeted αGC/sCD1d-anti-CEA or with unstimulated iNKT cells (Fig. 4a). Here, ERBB2 is linked to neoplasm.