Incremental prognostic value of isocitrate dehydrogenase status and O⁶-Methylguanine-DNA methyltransferase promoter methylation beyond World Health Organization grade in adult diffuse glioma: A real-world cohort study - Berkay Ayhan; Ayhan Tekiner; Mehmet Emre Yıldırım; Haydar Çelik; Burak Yürük; Serdar Cengiz; Kemal Kantarcı; Zeliha Çulcu; Tuncer Taşcıoğlu; Koray Öztürk; Yavuz Erdem (Medical Journal of Western Black Sea, 2026)