The primary purpose of the Research Database is to have a comprehensive source of
observational data that can be used to study HSC transplantation and cellular therapies.

A secondary purpose of the Research Database is to have a comprehensive source of data to
study marrow toxic injuries.

Objectives:

To learn more about what makes stem cell transplants and cellular therapies work well such
as:

- Determine how well recipients recover from their transplants or cellular therapy;

- Determine how recovery after a transplant or cellular therapy can be improved;

- Determine how a donor's or recipient's genetics impact recipient recovery after a
transplant or cellular therapy;

- Determine how access to transplant or cellular therapy for different groups of patients
can be improved;

- Determine how well donors recover from the collection procedures.

This Pediatric MATCH screening and multi-sub-study phase II trial studies how well treatment that is directed by genetic testing works in pediatric patients with solid tumors, non-Hodgkin lymphomas, or histiocytic disorders that have progressed following at least one line of standard systemic therapy and/or for which no standard treatment exists that has been shown to prolong survival. Genetic tests look at the unique genetic material (genes) of patients' tumor cells. Patients with genetic changes or abnormalities (mutations) may benefit more from treatment which targets their tumor's particular genetic mutation, and may help doctors plan better treatment for patients with solid tumors or non-Hodgkin lymphomas.

This randomized phase III trial studies digital tomosynthesis mammography and digital mammography in screening patients for breast cancer. Screening for breast cancer with tomosynthesis mammography may be superior to digital mammography for breast cancer screening and may help reduce the need for additional imaging or treatment.

This trial uses fluid measurements of the arm and MRI to determine biomarkers of lymphatic dysfunction in patients with breast cancer. Studying the lymphatic system (the part of your body that helps to process and clear waste products) in different ways will help doctors understand more about lymphedema (excess fluid after lymph nodes are removed) and help with prevention and management of lymphedema in patients with breast cancer.