As for the KEGG pathway enrichment analysis (Figure 3d), three groups of genes were mainly associated with cell adhesion molecules, cytokine-cytokine receptor interaction, chemokine signaling pathway, intestinal immune network for IgA production, autoimmune thyroid disease, phagosome, graft-versus-host disease, allograft rejection, antigen processing and presentation and B cell receptor signaling pathway. Here, CD79A is linked to graft versus host disease.