The top 10 KEGG enriched terms were Hepatitis B, the Jak-STAT signaling pathway, measles, the prolactin signaling pathway, acute myeloid leukemia, inflammatory bowel disease (IBD), the chemokine signaling pathway, natural killer cell-mediated cytotoxicity, the neurotrophin signaling pathway, and hepatitis C (Table 5). Here, BDNF is linked to hepatitis B virus infection.