The uptake of [177Lu]Lu-Ibu-PSMA-02 in PC-3 PIP tumor cells (53% ± 6% and 65% ± 5%) was in the same range as for [177Lu]Lu-Ibu-PSMA-01 (49% ± 12% and 53% ± 8%) and [177Lu]Lu-PSMA-617 (49% ± 5% and 55% ± 5%) after a 2- and 4 h-incubation period, respectively (Figure 3a). Here, FOLH1 is linked to neoplasm.