FOLH1 and neoplasm: Significant suppression of tumor growth compared with vehicle was also observed with 177Lu-PSMA-617 from day 18 (P < 0.05) to day 35 (P < 0.0001), and to a lesser extent with 177Lu-PSMA-I&T, which was shown to inhibit growth from day 25 (P < 0.05) to day 35 (P < 0.0001; Fig. 4A).