NOD/SCID mice bearing CHO-hPD-L1 tumors showed intense uptake of 68Ga-NOTA-WL12 in the tumors by 120 min (tumor–to–blood-pool uptake [T/BP]: 4.5 ± 0.2; tumor-to-muscle uptake [T/M]: 19.1 ± 1.2) (Fig. 1), whereas negative control CHO tumors showed minimal uptake (Supplemental Fig. 6A). This evidence concerns the gene HPD and neoplasm.