CCKBR and neoplasm: Conventional DOTA-CCK2R derivatives [177Lu]Lu-DOTA-PP-F11N showed an effective therapeutic response in terms of tumor volume in mice compared with [177Lu]Lu-DOTA (tumor volume at D23, 1884.72 ± 333.13 mm3 vs. 3237.10 ± 846.25 mm3, p = 0.048).