The expression levels of most examined immunosuppressive genes did not show significant differences between HMP and NHMP samples in IDH-mutant gliomas, except for TGFB1, which had a trend of higher expression in NHMP IDH-mutant samples (median 4.34 versus 2.9, p = 0.054) (Figure S4). This evidence concerns the gene IDH1 and glioma.