AUTHOR=Du Xin , Hu Hai TITLE=The Roles of 2-Hydroxyglutarate JOURNAL=Frontiers in Cell and Developmental Biology VOLUME=Volume 9 - 2021 YEAR=2021 URL=https://www.frontiersin.org/journals/cell-and-developmental-biology/articles/10.3389/fcell.2021.651317 DOI=10.3389/fcell.2021.651317 ISSN=2296-634X ABSTRACT=2-hydroxyglutarate(2-HG) is structurally similar to α-ketoglutarate(α-KG) which is an intermediate product of the tricarboxylic acid (TCA) cycle, it can be generated by reducing the ketone group of α-KG to a hydroxyl group. The significant role 2-HG plays has been certified in the occurrence of 2-hydroxyglutaric aciduria(2HGA),tumors harboring mutant isocitrate dehydrogenase 1/2(IDH1/2mt), and clear cell renal cell carcinoma(ccRCC). It is considered as an oncometabolite, raising much attentions on its oncogenic mechanism. In recent years, 2-HG has been verified to accumulate in the context of hypoxia or acidic pH, and there are also researches confirming the vital role 2-HG plays in the fate decision of immune cells. Therefore, 2-HG not only participates in tumorigenesis. This text will also summarize 2-HG’s identities besides oncometabolite, and discuss their enlightenment for future research and clinical treatment.