In terms of KEGG analysis, ATG16L2 mainly involves limonene and pinene degradation, drug metabolism – other enzymes, butanoate metabolism, neuroactive ligand receptor interaction, maturity onset diabetes of the young, olfactory transduction, basal cell carcinoma, hedgehog signaling pathway, glycine serine and threonine metabolism, and glycosphingolipid biosynthesis lacto and neolacto series. The gene discussed is ATG16L2; the disease is type 2 diabetes mellitus.