Program: Oral and Poster Abstracts Type: Oral Session: Plenary Scientific Session Hematology Disease Topics & Pathways: Research, Clinical trials, Lymphoid Leukemias, ALL, Clinical Research, Pediatric, Diseases, Lymphoid Malignancies, Study Population, Human 1 Seattle Children’s Hospital, University of Washington, Seattle, WA 2 The Hospital For Sick Children, Toronto, ON, Canada 3 University of Florida – Children’s Oncology Group, Gainesville, FL 4 Department of Pediatrics, Baylor College of Medicine TX