KLRK1 and pancreatic neoplasm: The results showed that NKG2D-CAR T had a killing function on pancreatic cancer cells such as PANC-1 and PANC-28 compared with Mock T, and as the effect-to-target ratio increased, the killing effect became more obvious, while there was no significant difference in the killing efficiency of CAR T cells on SW1990 among the three groups (Figure 1D).