CD274 and neoplasm: MFs were mainly enriched in DNA binding, transcription factor binding, phosphate hydrolase activity, and tumour necrosis factor receptor binding, while KEGG was mainly enriched in the NOD-like receptor signalling pathway, hypoxia-inducible factor-1 signalling pathway, antigen processing and presentation, tumour PD-1/PD-L1 immune checkpoint pathway, glycolysis/gluconeogenesis, and other signalling pathways.