CD274 and neoplasm: In the same tumor model, the tumor uptake was as similar to the currently reported [68Ga]Ga-NOTA-mal-(hPD-L1) as it was for the previously reported randomly and sortase-A mediated NOTA-coupled 68Ga-labeled Nb analogues (1.86 ± 0.67% IA/g, 1.89 ± 0.40% IA/g and 1.77 ± 0.28% IA/g, respectively, non-significant (NS)) [13].