CD274 and neoplasm: As the EMT conversion using SB‐415286 upregulated the surface expression of PD‐L1 on tumor cells, we next performed coculture experiment using EMT‐converted tumor cells and IL‐2‐activated T cells expressing PD‐1 to examine whether an increment of surface PD‐L1 expression on tumor cells functionally induces T‐cell apoptosis.