Day-4 DCs were as potent as Day-7 DCs in priming tumor-reactive T cells to secret high levels of IFN-γ in response to live HLA-A2+ SKOV3, and to T2 cells pulsed with HER-2/neu369–377 or HER-2/neu689–697 peptides. This evidence concerns the gene ERBB2 and neoplasm.