On the day of the end of the study, there was no significant difference in tumor volume between the [177Lu]Lu-PSMA-Q and [177Lu]Lu-PSMA-617 groups (p = 0.12), with vt/v0 of 2.10 ± 0.68 ([177Lu]Lu-PSMA-Q) and 2.75 ± 1.04 ([177Lu]Lu-PSMA-617), which were significantly smaller than that in [177Lu]Lu-PSMA-4PY (vt/v0 = 8.24 ± 1.75) and control groups (vt/v0 = 20.77). Here, FOLH1 is linked to neoplasm.