A study to evaluate if the randomized addition of venetoclax to a chemotherapy backbone (fludarabine/cytarabine/gemtuzumab ozogamicin [GO]) improves survival of children/adolescents/young adults with acute myeloid leukemia (AML) in 1st relapse who are unable to receive additional anthracyclines, or in 2nd relapse.

This phase III trial tests how well adding dinutuximab to induction chemotherapy along with standard of care surgery radiation and stem cell transplantation works for treating children with newly diagnosed high risk neuroblastoma. Dinutuximab is a monoclonal antibody that binds to a molecule called GD2, which is found in greater than normal amounts on some types of cancer cells. This helps cells of the immune system kill the cancer cells. Chemotherapy drugs such as cyclophosphamide, topotecan, cisplatin, etoposide, vincristine, dexrazoxane, doxorubicin, temozolomide, irinotecan and isotretinoin, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing or by stopping them from spreading. During induction, chemotherapy and surgery are used to kill and remove as much tumor as possible. During consolidation, very high doses of chemotherapy are given to kill any remaining cancer cells. This chemotherapy also destroys healthy bone marrow, where blood cells are made. A stem cell transplant is a procedure that helps the body make new healthy blood cells to replace the blood cells that may have been harmed by the cancer and/or chemotherapy. Radiation therapy is also given to the site where the cancer originated (primary site) and to any other areas that are still active at the end of induction.

This phase II trial tests the safety and best dose of revumenib when given together with chemotherapy, and how well the treatment regimen works for infants and young children with leukemia that has come back (relapsed) or does not respond to treatment (refractory) and is associated with a KMT2A (MLL) gene rearrangement (KMT2A-R). Revumenib is an oral medicine that directly targets the changes that occur in a cell with a KMT2A rearrangement and has been shown to specifically kill these leukemia cells in test tubes and animals. Drugs used in chemotherapy, such as vincristine, prednisone, asparaginase, fludarabine and cytarabine work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. This trial is being done to find out if the combination of revumenib and chemotherapy may help to treat the cancer cells better than either treatment alone.

This phase I trial tests the safety, side effects, and best dose of imetelstat in combination with fludarabine and cytarabine in treating patients with acute myeloid leukemia (AML), myelodysplastic syndrome (MDS) or juvenile myelomonocytic leukemia (JMML) that has not responded to previous treatment (refractory) or that has come back after a period of improvement (recurrent). Imetelstat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Chemotherapy drugs, such as fludarabine and cytarabine, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving imetelstat in combination with fludarabine and cytarabine may work better in treating patients with refractory or recurrent AML, MDS, and JMML.

This is a Phase 1/2 multicenter, open-label study to evaluate palbociclib in combination with either irinotecan (IRN) and temozolomide (TMZ) or topotecan (TOPO) and cyclophosphamide (CTX) chemotherapy in children, adolescents and young adults with recurrent or refractory solid tumors. The study consists of a non- randomized Phase 1 portion for recurrent or refractory solid tumors followed by potential non- randomized tumor specific cohort(s) and a randomized, Phase 2 portion for recurrent or refractory EWS.

This phase III trial studies if selumetinib works just as well as the standard treatment with carboplatin/vincristine (CV) for subjects with NF1-associated low grade glioma (LGG), and to see if selumetinib is better than CV in improving vision in subjects with LGG of the optic pathway (vision nerves).

This research trial studies the Project: Every Child for younger patients with cancer. Gathering health information over time from younger patients with cancer may help doctors find better methods of treatment and on-going care.

This phase I/II trial studies how well tiragolumab and atezolizumab works when given to children and adults with SMARCB1 or SMARCA4 deficient tumors that that has either come back (relapsed) or does not respond to therapy (refractory). SMARCB1 or SMARCA4 deficiency means that tumor cells are missing the SMARCB1 and SMARCA4 genes, which is related to having more aggressive cancers that are harder to treat. Immunotherapy with monoclonal antibodies, such as tiragolumab and atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread.

This phase II trial studies how well inotuzumab ozogamicin works in treating younger patients (≥1 year and < 22 years ) with CD22 positive B acute lymphoblastic leukemia that has come back or does not respond to treatment. Immunotoxins, such as inotuzumab ozogamicin, are antibodies linked to a toxic substance and may help find cancer cells that express CD22 and kill them without harming normal cells.

We want to study if lower doses of a chemotherapy drug called busulfan will help babies with SCID achieve good immunity with less short and long-term risks of complications after transplantation. This trial identifies babies with types of immune deficiencies that are most likely to succeed with this approach and offers them transplant early in life before they get severe infections or later if their infections are under control. It includes only patients receiving unrelated or mismatched related donor transplants.

In this study, the researchers are collecting blood samples to learn more about laronidase treatment in children that receive a hematopoietic cell transplantation. The laronidase dose regimens used after a hematopoietic cell transplantation may differ from those administered before. This study will establish the basis for determining if there is a need to adjust laronidase dosing regimens after receiving a hematopoietic cell transplantation.

To determine the prognostic factors for visual outcome for newly diagnosed NF1-OPGs. Hypothesis: Patients (<18 years of age) with tumors involving the optic tracts and/or radiations will demonstrate worse visual outcomes compared to those without optic tract involvement.

This study will be measuring brain activity using EEG and assessing motor skills and speech in children following cancerous brain tumor resection. No direct cancer treatments or objectives are being targeted.

The purpose of this study is to develop a questionnaire specifically designed for children and adolescents, which will help health care providers to better measure how bothersome symptoms of cGVHD are for children and adolescents living with cGVHD. Another purpose of this study is to design a caregiver companion questionnaire, to allow caregivers to measure how bothersome the symptoms of cGVHD are for their child/adolescent.

This phase I/II trial evaluates the highest safe dose, side effects, and possible benefits of tegavivint in treating children, adolescents, and young adults with recurrent or refractory solid tumors, including lymphomas and desmoid tumors.

Rhabdomyosarcoma is a type of cancer that occurs in the soft tissues in the body. This phase III trial aims to maintain excellent outcomes in patients with very low risk rhabdomyosarcoma (VLR-RMS) while decreasing the burden of therapy using treatment with 24 weeks of vincristine and dactinomycin (VA) and examines the use of centralized molecular risk stratification in the treatment of rhabdomyosarcoma. Another aim of the study it to find out how well patients with low risk rhabdomyosarcoma (LR-RMS) respond to standard chemotherapy when patients with VLR-RMS and patients who have rhabdomyosarcoma with DNA mutations get separate treatment. Finally, this study examines the effect of therapy intensification in patients who have RMS cancer with DNA mutations to see if their outcomes can be improved.

This phase III trial compares the safety and effect of adding vinorelbine to vincristine, dactinomycin, and cyclophosphamide (VAC) for the treatment of patients with high risk rhabdomyosarcoma (RMS). High risk refers to cancer that is likely to recur (come back) after treatment or spread to other parts of the body. This study will also examine if adding maintenance therapy after VAC therapy, with or without vinorelbine, will help get rid of the cancer and/or lower the chance that the cancer comes back. Vinorelbine and vincristine are in a class of medications called vinca alkaloids. Dactinomycin is a type of antibiotic that is only used in cancer chemotherapy. Cyclophosphamide is in a class of medications called alkylating agents. Vinorelbine, vincristine, dactinomycin and cyclophosphamide are chemotherapy medications that work by slowing or stopping the growth of cancer cells in the body. This trial may have the potential to eliminate rhabdomyosarcoma for a long time or for the rest of patient's life.

This phase I/II trial tests the safety, side effects, and best dose of selinexor given in combination with standard radiation therapy in treating children and young adults with newly diagnosed diffuse intrinsic pontine glioma (DIPG) or high-grade glioma (HGG) with a genetic change called H3 K27M mutation. It also tests whether combination of selinexor and standard radiation therapy works to shrink tumors in this patient population. Glioma is a type of cancer that occurs in the brain or spine. Glioma is considered high risk (or high-grade) when it is growing and spreading quickly.