The mean absorbed PC-3 PIP tumor dose for [177Lu]Lu-Ibu-DAB-PSMA (6.6 ± 0.8 Gy/MBq) was considerably higher than for [177Lu]Lu-PSMA-617 (4.5 ± 0.7 Gy/MBq) but slightly lower than for [177Lu]Lu-PSMA-ALB-56 (8.1 ± 1.4 Gy/MBq). The gene discussed is ALB; the disease is neoplasm.