FW received salary support provided by the American Society of Hematology Scholar Award, Claudia Adams Barr Award and Boston Children’s Office of Faculty Development Award. This research was supported with a grant from the National Cancer Institute, K08 CA222684 (YP). We thank the Leukemia & Lymphoma Society Leukemia and Lymphoma PedAL OptionSearch team for insightful discussions and support in the clinical trial search.