A higher proportion of tumor cells were PD-L1-positive than among immune cells using clones SP142 and 28–8 (30.48% vs. 18.41 and 30.79% vs. 7.62%, respectively), which differed from the results reported by Ronan et al., who showed PD-L1 expression in 12% of GC cells and 44% of immune or stromal cells using the clone 5H1 with a 1% cut-off value [18]. This evidence concerns the gene CD274 and neoplasm.