21 Adult ependymoma in England: Incidence, treatment, and outcomes from GlioCova - Kerlann Le Calvez; Radvile Mauricaite; Peter Treasure; Thomas C Booth; Stephen J Price; Andrew Brodbelt; Jonathan J Gregory; Seema Dadhania; Lillie Pakzad-Shahabi; Maureen Dumba; Ingela Oberg; Sally Vernon; et al. (Neuro-Oncology, 2026)