Furthermore, the results of KEGG pathway enrichment analysis of the hub genes suggested that these genes were mainly enriched in infection or immune related pathways (“Staphylococcus aureus infection,” “antigen processing and presentation,” “leishmaniasis,” “asthma,” “intestinal immune network for IgA production,” “graft-vs.-host disease,” “HTLV-I infection,”and “Rheumatoid arthritis”), and cell proliferation (“cell cycle,”and “DNA replication”) (Figure 1B). This evidence concerns the gene CD79A and rheumatoid arthritis.