NBN and astrocytoma (excluding glioblastoma): The expression of lnc-NBN-1 was greater in grade 2–3 IDHmut astrocytomas than in other tumor categories (Fig. 2A), and its high expression was associated with better overall survival in the whole cohort (p < 0.0001, log-rank test) (Fig. 2B) but not within any of the diffuse glioma subtypes (Supplementary Fig. 5B–D).