In order to better understand the biological mechanisms responsible for differences in clinical outcomes between patients harboring IDH1/2 WT and IDH1/2 mutant gliomas, we performed mRNA profiling to compare gene expression between IDH1/2 WT (n=7) and IDH1/2 mutant (n=51) grade II and III gliomas from our institutional cohort. This evidence concerns the gene IDH1 and glioma.