FOLH1 and prostate carcinoma: The radiotracers used in PSMA PET (including 18F-DCFPyL, 68Ga-PMSA-11, and 18F-rhPSMA-7.3) bind to PSMA, which is a transmembrane protein highly expressed in prostate cancer cells, allowing for detection of prostate cancer metastases at a sensitivity and specificity rate of 73.7% and 97.5%, respectively [1].