CD274 and cancer: KEGG pathway analysis revealed candidate genes significantly enriched in multiple biologically relevant pathways, including the PD‐L1 expression and PD‐1 checkpoint pathway in cancer, Th17 cell differentiation, tuberculosis, PPAR signalling pathway, Toll‐like receptor signalling pathway, fluid shear stress and various immune and inflammatory pathways such as Th17 cell differentiation and Toll‐like receptor signalling.