In detail, the absolute uptake of the tumour mass was the same for the two radiotracers but the healthy brain contralateral to the tumour showed a significantly lower uptake of [18F]F-PSMA-617-NODA compared to that of [18F]F-PSMA-617-RESCA (Additional file 1: S72B-D). The gene discussed is FOLH1; the disease is neoplasm.