CD19.28z-CAR T

Background:
- Although progress has been made in treating children with B-cell cancers such as leukemia or lymphoma, many children do not respond to the standard treatments. One possible treatment involves collecting white blood cells called T cells from the person with cancer and modifying the cells to attack the B-cell cancer. The cells can then be given back to the participant. This study will use T cells that have been modified to attack the cluster of differentiation 19 (CD19) protein, which is found on the surface of some B-cell cancers.
Objectives:
- To see if anti-CD19 modified white blood cells are a safe and effective treatment for children and young adults with advanced B-cell cancer.
Eligibility:
* Children and young adults between 1 and 30 years of age who have B-cell cancer (leukemia or lymphoma) that has not responded to standard treatments.
* The leukemia or the lymphoma must have the CD19 protein.
* There must be adequate organ function.
Design:
* Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. Imaging studies or bone marrow biopsies may be performed depending on the type of cancer.
* Participants will undergo a process where white blood cells are collected, called apheresis. These cells will be modified to contain the anti-CD19 gene.
* Participants will have 3 days of chemotherapy to prepare their immune system to accept the modified cells.
* Participants will receive an infusion of their own modified white blood cells. They will remain in the hospital until they have recovered from the treatment.
* Participants will have frequent follow-up visits to monitor the outcome of the treatment.
* If the participant benefits from the treatment, then he/she may have the option for another round of treatment.