Biodistribution studies with [111In]In-3p-C-NETA-ePSMA-16 showed that the tumor uptake of the compound was PSMA-specific (1.62 ± 0.55% ID/g, 0.89 ± 0.58% ID/g at 1 and 4 h p.i., respectively). This evidence concerns the gene FOLH1 and neoplasm.