Previous studies revealed GRPR-specific tumor (and pancreas) accumulation for the respective [177Lu]Lu-DOTA-conjugated MJ9 analogues [29,30], as other MJ9 derivatives described in the literature also displayed a GRPR-specific uptake pattern and GRPR affinity was high for all novel [99mTc]Tc-labeled MJ9 derivatives. Here, GRPR is linked to neoplasm.