FOLH1 and cancer: Several PSMA ligands are available, radiolabeled with currently primary two different positron-emitting isotopes: gallium-68 [68 Ga] and fluorine-18 [18F].The most commonly used PSMA agent in Europe was initially [68 Ga]-PSMA-11, with well-established application for cancer localization in early BCR, with high detection rates, and an impact on management following 60% of scans [15].