IDH1 and neoplasm: Therefore, the possible mechanism underlying the association between oral microbiome and IDH1 mutation is that IDH1 mutation specifically selects some oral microbiota, which can produce specific metabolites involved in lipid metabolism and AMPK signaling pathway to regulate intracellular energy homeostasis, increase brain glioma cell apoptosis and autophagy, prevent brain glioma cell proliferation, and contribute to the formation of an anti-inflammatory tumor microenvironment in the brain, and further causes better prognoses in patients with an IDH1-mutated glioma.