CD274 and gastric cancer: Previously, 33% and 45% PD-L1+ staining was seen on tumour cells and immune cells in MSI high tumours.30 Based on molecular classification of GC, ~4–9% of GC patients are EBV+ tumours.4,31 Previously PD-L1 positivity in tumour and inflammatory cells was reported in 77% and 100% of EBV+ tumours.31 In our study out of four EBV+ tumours, respective numbers were 75% and 100%.