GBMLGG data was segregated based on IDH1/2 status, with IDHmut gliomas further stratified between astrocytomas (1p/19q intact) and oligodendrogliomas (1p-19q codeleted), and overall survival plotted based on median BET isoform (BRD2/3/4) expression levels. This evidence concerns the gene IDH1 and astrocytoma (excluding glioblastoma).