The PSMA-targeted 18F-labeled PET radiotracer [18F]CTT1057 (vidoflufolastat [18F]) contains a phosphoramidate scaffold and has been shown to pseudoirreversibly bind to PSMA with high nanomolar affinity (12), which might account for a high tumor-to-background ratio and prolonged tumor uptake (13). Here, FOLH1 is linked to neoplasm.