Despite the name, PSMA expression is not exclusive to prostate cells and can be found in many other tissues and pathologic conditions, including inflammation/infection, non-prostatic tumor-associated neovasculature (i.e., colon, gastric, lung, breast, glioma, adrenal, bladder, renal cell carcinoma), and non-neoplastic conditions. This evidence concerns the gene FOLH1 and renal cell carcinoma.