There was also variability in the PD-L1 positivity rate among metastases of castration-resistant PCs (CRPCs) to different sites in the autopsy cohort of Haffner et al. [66]: CRPC metastases showed higher rates of PD-L1 expression, namely >31% and up to 11% of cases with PD-L1 expression in ≥1% and ≥5% of PC cells, respectively, regardless of the tumor site [66]. Here, CD274 is linked to neoplasm.