Finally 6 genes (NCOR2, NR1H3, PPARA, IRF3, MAP2K3, and TLR6) were enriched in 3 immune-related pathways, including toll-like receptor signaling pathway, EB virus infection, and hepatitis C (Fig. 1c, Supplementary Fig. 1a). Here, MAP2K3 is linked to hepatitis C virus infection.