This study enrolls patients between 5 and 40 years of age with a diagnosis of Ewing sarcoma (including Ewing-like sarcoma) or osteosarcoma that has progressed on or relapsed after upfront initial therapy. The purpose of this study is to find the best dose of a drug called cabozantinib ("the study drug") to give to patients in combination with a routine chemotherapy drug called ifosfamide.

The purpose of this research study is to determine if certain markers in your blood are increased over the duration of your chemotherapy, especially as you get sicker, such as developing a severe infection (sepsis) or severe respiratory failure (acute respiratory distress syndrome).

This study involves taking a study drug called INBRX-109. The overall goal of the study is to find out how safe and effective the study drug is in treating people that have been diagnosed with advanced or metastatic Ewing sarcoma or SDH-deficient solid tumor/Gastrointestinal Stromal Tumor (GIST).

This study involves taking a study drug called lurbinectedin. The overall goal of this study is to see if different doses of lurbinectedin are safe and effective at treating children and young adults with recurrent or relapsed solid tumors, including Ewing Sarcoma.

This study enrolls patients with refractory, progressive, or relapsed solid tumors. The purpose of this study is to find out whether a drug called PEEL-224 ("the study drug") is safe and effective when given as monotherapy (a drug given by itself) and as part of a combination therapy together with other chemotherapy drugs.

CAR T cell therapy has shifted the treatment landscape for pediatric and young adult patients with advanced B-cell leukemias. However, the manufacturing process remains in its first generation: difficult, time-consuming, and not automated. The time and significant resources in this process can result in patient safety issues - with patients growing sicker, with harder to control leukemias - in the waiting period. Use of the CliniMACS Prodigy platform can help to surmount these issues. This study will determine the safety and usefulness of using the CliniMACS Prodigy platform to manufacture huCART19 cells.

This is a Phase 1/2b trial for the treatment of patients with either advanced or refractory B cell Acute Lymphoblastic Leukemia or B-lineage lymphoblastic lymphoma who will be treated with huCART19, which has been manufactured using the CliniMACs Prodigy Platform. Possible procedures include medical record review, apheresis, huCART19 infusion, blood draws, physical exams, imaging, and disease assessments through bone marrows and lumbar punctures. Overall, approximately 89 subjects will be enrolled on this clinical trial.

This study involves taking a study drug called SAR443579. The overall goal of this study is to find out if the study drug is safe and effective at treating adults and children with relapsed or refractory acute myeloid leukemia (R/R AML), high risk myelodysplastic syndrome (HR-MDS), or B-cell acute lymphoblastic leukemia (B-ALL). This is a first-in-human research study.

This study has two parts. Part A enrolls patients who have been diagnosed with a solid tumor, lymphoma or desmoid tumor that has either come back ("relapsed") or does not respond to therapy ("is refractory"). Part B enrolls patients with a relapsed or refractory Ewing sarcoma, desmoid tumor, osteosarcoma, liver tumor, Wilms tumor, or tumors with changes in a gene family known as the Wnt pathway. This study involves taking a study drug called tegavivint. The study will be testing different doses of the study drug to find the safest dose.