1Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA
2Department of Pathology, Amsterdam University Medical Centers/VUmc, Amsterdam, the Netherlands
3Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
4Laboratory of Pathology, National Cancer Institute, Bethesda, MD
5Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL
6Department of Neuropathology Humboldt‐Universität zu Berlin and Berlin Institute of Health Corporate Member of Freie Universität Berlin Charité – Universitätsmedizin Berlin Berlin Germany
7German Cancer Research Center German Cancer Consortium Partner Site Berlin Heidelberg Germany
8International Agency for Research on Cancer, World Health Organization, Lyon, France
9Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
10Service d'Anatomie Pathologique et de Neuropathologie Hôpital de la Timone Institut de Neurophysiopathology Aix‐Marseille Univ APHM CNRS Marseille France
11Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH
12Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, TX
13Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum – University of Bologna, Bologna, Italy
14Department of Biomedical and Neuromotor Sciences Alma Mater Studiorum University of Bologna Bologna Italy; Department of Laboratory Medicine and Pathology Mayo Clinic Rochester MN
15Institute of Neurology, Medical University of Vienna, Vienna, Austria
16Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Canada
17Department of Laboratory Medicine and Pathology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
18Department of Pathology, Erasmus Medical Center, Rotterdam, The Netherlands
19Department of Anatomical and Cellular Pathology, Chinese University of Hong Kong, Hong Kong, China
20Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN
21Department of Pathology, Seoul National University College of Medicine, Seoul, South Korea
22Institute of Neuropathology, University Hospital Munster, Munster, Germany
23Department of Pathology, University of California, San Francisco, San Francisco, CA
24Department of Neuropathology, DGNN Brain Tumor Reference Center, University of Bonn, Bonn, Germany
25Department of Neuropathology Heinrich Heine University Duesseldorf Germany; German Cancer Consortium Partner Site Essen/Duesseldorf Essen Germany
26German Cancer Consortium Partner Site Essen/Duesseldorf Essen Germany
27Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY
28Department of Pathology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
29Department of Pathology Cambridge University Hospitals NHS Foundation Trust Cambridge UK; International Agency for Research on Cancer World Health Organization Lyon France
30Clinical Cooperation Unit Neuropathology German Cancer Research Center German Cancer Consortium Heidelberg Germany
31Department of Neuropathology Institute of Pathology Ruprecht‐Karls‐University Heidelberg Germany
32Hopp Children's Cancer Center NCT Heidelberg Heidelberg Germany
33Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
34Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Canada
35Department of Neurology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
36Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland
37Department of Pathology St. Jude Children's Research Hospital Memphis TN; International Agency for Research on Cancer World Health Organization Lyon France