Here we subdivided the TCGA samples into GBMs with IDH-wild type, GBMs with IDH-mutant, Lower-grade glioma (LGG) with IDH-wild type, LGG with mutant IDH and 1p/19q codeletion, and LGG with IDH mutant without 1p/19q codeletion. The gene discussed is IDH1; the disease is glioma.