CEACAM5 and neoplasm: In the anti-CEA-CAR NK-92MI cell therapy groups, tumour volume growth was significantly smaller, with average decrease to controls of 57.67, 262.75, 225.25, 415.92, and 582.99(mm3) less than those of the various control groups at Days 4, 8, 12, 15, and 19, respectively.