The expression of the PD-L1 ligand was highly prevalent in the analyzed tumor samples, with a positive IHC score in TCs identified in 46% (22/48) samples (Figure 3a), whereas 96% (46/48) and 100% (48/48) of the tumor samples showed positive scores in intratumoral and stromal TILs, respectively (Figure 3c,e). Here, CD274 is linked to neoplasm.