As a result, the top 10 KEGG pathways between the Lop group and the Normal group were Olfactory transduction, Phototransduction, Maturity onset diabetes of the young, ErbB signaling pathway, Complement and coagulation cascades, Steroid hormone biosynthesis, Neuroactive ligand–receptor interaction, Tight junction, Intestinal immune network for IgA production and Cytokine–cytokine receptor interaction (Figure 5d, p < 0.05). The gene discussed is EGFR; the disease is diabetes mellitus.