CD274 and neoplasm: There was no significant correlation between expression of PD‐L1 either by tumour or immune cells and caspase activation in tumours, and there was no survival benefit of low tumour PD‐L1 expression (HR: 1.476; 95% CI 0.561–3.886; p = 0.43) (Figure 2F and supplementary material, Figure S6 and Table S3).