Pediatric Acute Lymphoblastic Leukemia

This is a trial assessing the efficacy of two weight maintenance programs for children with acute lymphoblastic leukemia (ALL) and the patients' caregivers. Patients and their caregivers will be randomized 1:1 to Arm A, a non-intensive educational intervention using National Institute of Health (NIH) Educational Resources (We Can! for children 8-13 and Take Charge of Your Health for teenagers 14-18), or Arm B, a Modified Guided Self-Help Family Intervention for Leukemia patients (mL-GSH). Outcomes will be assessed through activity trackers, obesity biometrics, and nutrition and physical activity assessments.

This is a multicenter, experimental preclinical study conducted on primary samples from patients diagnosed with hematological or solid neoplasms defined as high risk. The study will be prospective, based on the consecutive enrollment of eligible patients at each participating institution.

* Clinical and genetic factors consistent with High risk : Induction → Consolidation 1. BM MRD \&lt; 0.01% : IM #1 → DI #1 → IM #2 → Maintenance 2. BM MRD ≥ 0.01% : IM #1 → DI #1 → IM #2 → DI #2 → Maintenance 3. BM MRD ≥ 0.01% after Consolidation <!-- --> 1. T cell ALL : Change to very high risk regimen 2. Pre-B ALL : IM #1 → Intensification 1. BM MRD \&lt; 0.01% after IM #1 : DI #1 → IM #2 → DI #2 → Maintenance 2. BM MRD ≥ 0.01% after IM #1 : Change to Very high risk regimen * Difference in the number of \&#39;interim maintenance(IM)\&#39; and \&#39;delayed intensification(DI)\&#39; is important for chemotherapies based on MRD.