Emerging data suggest that the maximum standardized uptake value (SUVmax) can be used as a biomarker to prognosticate clinically significant PCa [15], Gleason-Score (GS) [16, 17], and distant metastases [18] in primary PCa, but no data exist on the applicability of this PSMA-PET feature in patients with relapse undergoing sRT. Here, FOLH1 is linked to posterior cortical atrophy.