Evidently, this approach was successful in inducing a significant (P < 0.001) reduction of the renal uptake of 111In-CP04 in our animal model without negatively affecting the radiotracer uptake in the A431-CCK2R(+) xenografts, and led to significant improvement of the tumour-to-kidney ratios (Table 3, Fig. 4). Here, CCKBR is linked to neoplasm.