KLRK1 and gastric cancer: In the strategy of CAR-T treatment of GC, multiple targets have been proved to be effective in the treatment of xenograft mouse GC model, such as mesothelin (MSLN), prostate stem cell antigen (PSCA), B7 homology 3 (B7H3) protein, and NK group 2 member D (NKG2D) (102–105).