In addition, KEGG analysis illustrated that these genes were involved in a total of 9 pathways, including those associated with viral infection (‘Influenza A' and ‘Hepatitis C'), inflammatory responses (‘Viral protein interaction with cytokine and cytokine receptor,' ‘IL-17 signaling pathway,' ‘Cytokine-cytokine receptor interaction,' and ‘Chemokine signaling pathway'), and cancer (‘PPAR signaling pathway' and ‘Prostate cancer'). Here, PPARA is linked to viral infectious disease.