The detailed biodistribution data of the present study showed that all radiolabeled PSMA ligands rapidly accumulated in the PSMA+ xenografts resulting in similar tumor uptake for 177Lu-PSMA-617 vs 89Zr-PSMA-617 and 177Lu-PSMA-I&T vs 89Zr-PSMA-I&T. The gene discussed is FOLH1; the disease is neoplasm.