Maintenance Chemotherapy or Observation Following Induction Chemotherapy and Radiation Therapy in Treating Patients With Newly Diagnosed Ependymoma

Targeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)

Response-Based Chemotherapy in Treating Newly Diagnosed Acute Myeloid Leukemia or Myelodysplastic Syndrome in Younger Patients With Down Syndrome

Combination Chemotherapy With or Without Temsirolimus in Treating Patients With Intermediate Risk Rhabdomyosarcoma

Neuroblastoma Maintenance Therapy Trial

A Study of AeroVanc for the Treatment of MRSA Infection in CF Patients

Personalized Research on Diet in Ulcerative Colitis and Crohn's Disease

Selumetinib Sulfate in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With Activating MAPK Pathway Mutations (A Pediatric MATCH Treatment Trial)

Vemurafenib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With BRAF V600 Mutations (A Pediatric MATCH Treatment Trial)

Expanded Access Program to Provide Treatment With Pitolisant to Adult Patients in the U.S. With Excessive Daytime Sleepiness Associated With Narcolepsy With or Without Cataplexy

Cisplatin and Combination Chemotherapy in Treating Children and Young Adults With Hepatoblastoma or Liver Cancer After Surgery

Veliparib, Radiation Therapy, and Temozolomide in Treating Participants With Newly Diagnosed Malignant Glioma Without H3 K27M or BRAFV600E Mutations

Comparing the Effects of Lactated Ringers and Normal Saline in Acute Pancreatitis

Evaluation of the Duration of Therapy for Thrombosis in Children

Study of Kidney Tumors in Younger Patients

Temozolomide, Cixutumumab, and Combination Chemotherapy in Treating Patients With Metastatic Rhabdomyosarcoma

A Research Study to Bank Samples for Future Evaluation to Identify Biomarkers That Predispose Crohn's Disease and Ulcerative Colitis Patients to Develop Hepatosplenic T-Cell Lymphoma (HSTCL)

A Multicenter, Multinational, Observational Morquio A Registry Study (MARS)

Study of SRP-4045 and SRP-4053 in DMD Patients

Imatinib Mesylate and Combination Chemotherapy in Treating Patients With Newly Diagnosed Philadelphia Chromosome Positive Acute Lymphoblastic Leukemia

Erdafitinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With FGFR Mutations (A Pediatric MATCH Treatment Trial)

Larotrectinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With NTRK Fusions (A Pediatric MATCH Treatment Trial)

A Study Evaluating the Long-term Safety and Efficacy of VX-445 Combination Therapy

Long-Term Follow-Up of Patients Who Have Participated in Children's Oncology Group Studies

Bortezomib and Combination Chemotherapy in Treating Young Patients With Relapsed Acute Lymphoblastic Leukemia or Lymphoblastic Lymphoma

Brentuximab Vedotin and Combination Chemotherapy in Treating Children and Young Adults With Stage IIB or Stage IIIB-IVB Hodgkin Lymphoma

A Safety and Efficacy Study of a Range of Linaclotide Doses Administered Orally to Children Ages 7-17 Years, With Irritable Bowel Syndrome With Constipation

Pediatric Adenotonsillectomy for Snoring

Tretinoin and Arsenic Trioxide in Treating Patients With Untreated Acute Promyelocytic Leukemia

Cabozantinib-S-Malate in Treating Younger Patients With Recurrent, Refractory, or Newly Diagnosed Sarcomas, Wilms Tumor, or Other Rare Tumors

Reduced Craniospinal Radiation Therapy and Chemotherapy in Treating Younger Patients With Newly Diagnosed WNT-Driven Medulloblastoma

Long-Term Outcomes of Ataluren in Duchenne Muscular Dystrophy

Phase III Study of Edasalonexent in Boys With Duchenne Muscular Dystrophy

Genetic Analysis in Identifying Late-Occurring Complications in Childhood Cancer Survivors

Biomarkers in Tumor Tissue Samples From Patients With Newly Diagnosed Neuroblastoma or Ganglioneuroblastoma

Combination Chemotherapy With or Without Peripheral Stem Cell Transplantation, Radiation Therapy, and/or Surgery in Treating Patients With Ewing's Sarcoma

Safety and Efficacy Evaluation of Oxybutynin Topical Gel In Children With Neurogenic Bladder

Combination Chemotherapy in Treating Young Patients With Newly Diagnosed High-Risk Acute Lymphoblastic Leukemia

Laryngeal Mask Airway in Pediatric Adenotonsillectomy

Evaluation of Purified Poloxamer 188 in Vaso-Occlusive Crisis of Sickle Cell Disease (EPIC)

Project: Every Child for Younger Patients With Cancer

Pediatric Precision Laboratory Advanced Neuroblastoma Therapy

Targeted Therapy Directed by Genetic Testing in Treating Pediatric Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphomas, or Histiocytic Disorders (The Pediatric MATCH Screening Trial)

Randomized Controlled Trial of Valganciclovir for Cytomegalovirus Infected Hearing Impaired Infants

Olaparib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With Defects in DNA Damage Repair Genes (A Pediatric MATCH Treatment Trial)

Palbociclib in Treating Patients With Relapsed or Refractory Rb Positive Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With Activating Alterations in Cell Cycle Genes (A Pediatric MATCH Treatment Trial)

Axitinib and Nivolumab in Treating Participants With Unresectable or Metastatic TFE/Translocation Renal Cell Carcinoma

Ulixertinib in Treating Patients With Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With MAPK Pathway Mutations (A Pediatric MATCH Treatment Trial)

Mucopolysaccharidosis (MPS) VI Clinical Surveillance Program (CSP)

Neuropsychological and Behavioral Testing in Younger Patients With Cancer

PKUDOS: Phenylketonuria (PKU) Demographic, Outcomes, and Safety Registry

A Study to Evaluate the Pharmacokinetics, Safety, Tolerability, and Antiviral Efficacy of Rilpivirine (TMC278) in Human Immunodeficiency Virus Infected Adolescents and Children Aged Greater Than or Equal to 6 Years

Cyproheptadine in Preventing Weight Loss in Children Receiving Chemotherapy for Cancer

Turbinate Cauterization in Pediatric Patients With Nasal Obstruction

Blinatumomab in Treating Younger Patients With Relapsed B-cell Acute Lymphoblastic Leukemia

Response and Biology-Based Risk Factor-Guided Therapy in Treating Younger Patients With Non-high Risk Neuroblastoma

Inotuzumab Ozogamicin in Treating Younger Patients With B-Lymphoblastic Lymphoma or Relapsed or Refractory CD22 Positive B Acute Lymphoblastic Leukemia

A Phase 2 Study of Ruxolitinib With Chemotherapy in Children With Acute Lymphoblastic Leukemia

Ensartinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With ALK or ROS1 Genomic Alterations (A Pediatric MATCH Treatment Trial)

PI3K/mTOR Inhibitor LY3023414 in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With TSC or PI3K/MTOR Mutations (A Pediatric MATCH Treatment Trial)

Low Dose Oral Methotrexate in Pediatric Crohn's Disease Patients Initiating Anti-Tumor Necrosis Factor (Anti-TNF) Therapy

Active Surveillance, Bleomycin, Carboplatin, Etoposide, or Cisplatin in Treating Pediatric and Adult Patients With Germ Cell Tumors

A Study to Assess Dystrophin Levels in Participants With Nonsense Mutation Duchenne Muscular Dystrophy (nmDMD)