As a target on cancer cells, we chose the prostate stem cell antigen (PSCA), a glycophosphatidylinositol (GPI)-anchored tumor-associated antigen which is found in a variety of urogenital-related cancers [9,10,11,12,13], and various other malignancies such as pancreatic adenocarcinoma [14] and glioblastoma [15]. This evidence concerns the gene PSCA and cancer.