1. SIREDO Oncology Center of Care, Innovation and Research for Children, Adolescent and Young Adults with Cancer Institut Curie Paris France
2. Université de Paris Paris France
3. Department of Neuropathology, GHU Paris Psychiatrie et Neurosciences Hôpital Sainte‐Anne Paris France
4. Institut de Psychiatrie et Neurosciences de Paris (IPNP) UMR S1266, INSERM, IMA‐BRAIN Paris France
5. Department of Pathology Institut Curie Paris France
6. Department of Somatic Genetics Institut Curie Paris France
7. Laboratory of Genetics and Biology of Cancer INSERM U830 Paris France
8. Department of Biostatistics Institut Curie Paris France
9. Medical Oncology Department Institut Curie Paris France
10. Institute of Pediatric Hematology and Oncology IHOPE Centre Leon Berard Lyon France
11. Department of Pediatric and Adolescent Oncology INSERM 1015, Gustave Roussy, Paris‐Saclay University Villejuif France
12. Genetics Epigenetics and Biology of Sarcomas Team Claude Bernard University Lyon 1, INSERM 1052, CNRS 5286, Cancer Research Center of Lyon, Centre Léon Bérard Lyon France
13. Department of Medical Oncology Centre Léon Bérard Lyon France
14. Department of Biopathology Centre Léon Bérard Lyon France
15. Department of Pathology CHRU Bretonneau Tours France
16. Imaging Department Institut Curie Paris France