Sharma et al. developed radiolabeled affibody molecules, ZPD-L1, using Fluorine-18 (18F) and Gallium-68 (68Ga) to target PD-L1 present in glioblastoma xenograft mouse models.17 These radioconjugates were synthesized with high radiochemical purity, and their binding affinity correlated with PD-L1 expression levels in vitro. Here, CD274 is linked to glioblastoma.