Kunikowksa et al. reported tumor/liver ratios after [68 Ga]Ga-PSMA-11 PET [54]; 40% (6/15 patients) of the glioblastoma patients showed a tumor/liver ratio > 1, and 13% (2/15) had a tumor/liver ratio > 1.5. Here, FOLH1 is linked to glioblastoma.