PET/CT imaging and biodistribution in A375-PD-L1 tumor-bearing mice demonstrated rapid and high uptake of [68Ga]Ga-DOTA-PG1 as soon as 30 min p.i. (5.01 ± 0.46 %ID/g) that is retained in the tumor up to 2 h p.i. (6.96 ± 1.02 %ID/g) (215). Here, CD274 is linked to neoplasm.