CD274 and non-small cell lung carcinoma: Zhang et al. developed four PD-L1-specific tracers ([68Ga]Ga-NOTA-RW102, [68Ga]Ga-NOTA-ABDRW102, [64Cu]Cu-NOTA-ABDRW102, and [89Zr]Zr-DFO-ABDRW102) with different circulation times and evaluated them in preclinical PD-L1-positive solid tumor models as well as in patients (n = 10) with NSCLC.