CEACAM5 and colorectal carcinoma: In CRC, CAR-T cells target carcinoembryonic antigens (CEA) and guanylyl cyclase C (GUCY2C) (142, 143) tumor-associated glycoprotein (TAG72) (144), epithelial cell adhesion molecule (EpCAM) (145), NK cell surface receptor ligands (NKG2DLs) such as major histocompatibility complex (MHC) class I-related chain A and B (MICA and MICB, respectively) and six unique long 16 binding protein (UL-BP1-6) (146).