1 Department of Medical Oncology, Institut Régional du Cancer de Montpellier (ICM)-Val d'Aurelle, 208 rue des Apothicaires, 34298, Montpellier, France. amelie.darlix@icm.unicancer.fr.
3 Department of Epidemiology, French brain tumor database, GNOLR, Registre des Tumeurs de l'Hérault, Institut Régional du Cancer de Montpellier (ICM)-Val d'Aurelle, 208 rue des Apothicaires, 34298, Montpellier, France.
4 Department of Neurosurgery, Gui de Chauliac Hospital, 80 avenue Augustin Fliche, 34090, Montpellier, France.
5 Department of Pathology, Gui de Chauliac Hospital, 80 avenue Augustin Fliche, 34090, Montpellier, France.
6 Department of Neuropathology and INSERM U911, Timone Hospital, Université de la Méditerranée, 40 rue Ste Baume, 13010, Marseille, France.
7 INSERM U1051, 80 avenue Augustin Fliche, 34091, Montpellier, France.
8 Neuro-oncology Unit, University Hospital, 29 avenue du Maréchal de Lattre de Tassigny, Nancy, France.