1. Department of Pediatric Hematology and Oncology, Assistance Publique–Hôpitaux de Paris (AP-HP), Groupe Hospitalier Hôpitaux Universitaires Est Parisien (GH HUEP), Armand Trousseau Hospital, Paris, France;
2. Sorbonne Universités, UPMC Univ Paris 06, Unité Mixte de Recherche (UMR) S938, CDR Saint-Antoine, Groupe de Recherche Clinique (GRC) 07, GRC MyPAC, Paris, France;
3. Université Paris Descartes Sorbonne Cité, Institut Necker-Enfants Malades, INSERM U1151, Paris, France;
4. Laboratory of Onco-Hematology, AP-HP, Hôpital Necker-Enfants Malades, Paris, France;
5. INSERM UMRS 1153, Université Paris Diderot, Sorbonne Paris Cité, Paris, France;
6. Laboratory of Hematology, AP-HP, GH HUEP, Armand Trousseau Hospital, Paris, France;
7. Laboratory of Hematology, Saint-Louis Hospital, AP-HP, Paris, France;
8. Laboratory of Hematology, Centre Hospitalier Régional Universitaire de Lille, Lille, France;
9. Department of Pediatric Hematology and Immunology, Robert Debré Hospital, AP-HP, Paris, France;
10. Department of Pediatric Onco-hematology, Centre Hospitalier Universitaire (CHU) de Nancy, Nancy, France;
11. Department of Pediatric Onco-hematology, CHU de Saint-Etienne, Saint-Etienne, France;
12. Department of Pediatric Hematology and Oncology, Timone Hospital, Marseilles, France;
13. Research Unit EA 3279, Aix-Marseille University, Marseilles, France;
14. U1172, INSERM, Lille, France; and
15. Department of Cytogenetics, Saint-Louis Hospital, AP-HP, Paris, France