Other targets include TROP2 and MUC1, both glycoproteins frequently overexpressed in solid tumors; Claudin18.2, a tight-junction molecule; and the stress-induced ligands of the NKG2DL group, such as MICA/B and ULBP1-6, which are natural ligands of NK cells, and commonly overexpressed on various cancers [28]. This evidence concerns the gene MUC1 and cancer.