KEGG pathway enrichments of the 81 genes were ranked according to strength and start with mTOR signaling but also contain other pathways including the anti-inflammatory PD-L1/PD-1 checkpoint pathway, viral infection pathways like human cytomegalovirus infection, human papillomavirus infection and chemokine signaling pathway (Additional file 4: Table S4). This evidence concerns the gene CD274 and cytomegalovirus infection.