This randomized clinical trial studies how well an adaptive computerized cognitive training program works compared to a non-adaptive computerized cognitive training program in treating younger patients with brain tumor who underwent radiation therapy. Providing a computer training program may improve the well-being and quality of life of patients with cognitive (physical and mental) function difficulties caused by radiation therapy to the brain.

This phase II Pediatric MATCH trial studies how well palbociclib works in treating patients with Rb positive solid tumors, non-Hodgkin lymphoma, or histiocytic disorders with activating alterations (mutations) in cell cycle genes that have spread to other places in the body and have come back or do not respond to treatment. Palbociclib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth.

The purpose of this study is to test the safety of neratinib at different dose levels and to find out what effects, good and bad, it has on the patients and the cancer.

This phase II Pediatric MATCH trial studies how well ulixertinib works in treating patients with solid tumors that have spread to other places in the body (advanced), non-Hodgkin lymphoma, or histiocytic disorders that have a genetic alteration (mutation) in a signaling pathway called MAPK. A signaling pathway consists of a group of molecules in a cell that control one or more cell functions. Genes in the MAPK pathway are frequently mutated in many types of cancers. Ulixertinib may stop the growth of cancer cells that have mutations in the MAPK pathway.

This partially randomized phase II/III trial studies how well, in combination with surgery, cisplatin and combination chemotherapy works in treating children and young adults with hepatoblastoma or hepatocellular carcinoma. Drugs used in chemotherapy, such as cisplatin, doxorubicin, fluorouracil, vincristine sulfate, carboplatin, etoposide, irinotecan, sorafenib, gemcitabine and oxaliplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving combination chemotherapy may kill more tumor cells than one type of chemotherapy alone.

The purpose of this study is to determine whether accelerated BEP chemotherapy is more effective than standard BEP chemotherapy in males with intermediate and poor-risk metastatic germ cell tumours.