BCOR immunohistochemistry, but not SATB2 immunohistochemistry, is a sensitive and specific diagnostic biomarker for central nervous system tumours with BCOR internal tandem duplication. Issue 5 (20th September 2021) - Mardi, Laïla; Tauziède‐Espariat, Arnault; Guillemot, Delphine; Pierron, Gaelle; Gigant, Priscille; Mehdi, Leïla; Berthaud, Charlotte; Pucelle, Noémie; Lacombe, Joelle; Hasty, Lauren; Wahler, Ellen; Chrétien, Fabrice; et al.