Other emerging innovative PET radiotracers for PCa have been proposed such as 18F-Fluciclovine (FACBC), 18F-Bombesin, 18F-fluoro-5α-dihydrotestosterone (FDHT) and urokinase-type plasminogen activator receptor (uPAR), but these are almost exclusively being investigated in the setting of recurrent PCa or for visualization of the primary intraprostatic lesion but not for distant staging in primary PCa [41]. The gene discussed is GRP; the disease is posterior cortical atrophy.