When four commercially available PD-L1 assays (PD-L1 IHC 28–8 pharmDx, PD-L1 IHC 22C3 pharmDx), SP142, and SP263) were used in the analysis of biopsy samples from 335 tumors, in all assays except for SP142, the analytical concordance was high for both tumor cells and the proportion of tumor infiltrating area with PD-L1 staining [17]. This evidence concerns the gene CD274 and neoplasm.