FOLH1 and neoplasm: In mice, 203Pb-PSMA-CA012 was found to be the most promising of our candidates and showed a high tumour uptake of 8.4 ± 3.7%ID/g at 1 h after injection, which is nearly identical to the tumour uptake of 8.5 ± 4.1%ID/g reported for 68Ga-PSMA-617 [8].