ERBB2 and neoplasm: Additional reports explored the activity of CAR NK cells in tumor xenograft models, including CAR targets of hematological cancers (e.g., CD19, CD20, CD138, and CS-1) [122,126,127,128,129] and solid tumors (e.g., HER2, EpCam, GD2, GPA7, PSCA, EGFR, and EGFRvIII) [115,120,130,131,132,133,134,135,136].