To confirm that PDL1 on tumor cells was not responsible for the lack of killing and that the enhanced killing mediated by the BsAb was not simply due to PD1/PDL1 blockade-induced T-cell activation, we examined the killing of parental N87 cells that did not express PDL1 with activated Jurkat T cells in the presence of various antibodies. The gene discussed is CD274; the disease is neoplasm.