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Value of adjuvant post-operative first-line external-beam irradiation (XRT) in EPN_PFB. (A) Progression-free survival (PFS) and (B) overall survival (OS) of EPN_PFB across the Global Ependymoma Network of Excellence, St Jude’s, and Collaborative Ependymoma Research Network cohorts. (C) PFS and (D) OS of EPN_PFB across the Burdenko cohort. P values determined using log-rank test.
