The goal of this study is to see if it is safe and feasible to give chemotherapy (topotecan, cyclophosphamide, and vincristine), natural killer (NK) cells, and an antibody called 3F8 to patients with high-risk recurrent or persistent neuroblastoma.
The NK cells, a type of white blood cell, must come from a patient’s relative who shares half of his or her HLA proteins, which are immune proteins important in transplantation. Studies have shown that NK cells from a donor can be given safely and can be helpful in treating some diseases. These NK cells are collected from the donor and purified.
NK cells can recognize and kill abnormal cells in the body and can work together with antibodies to kill target cells. The antibody 3F8 specifically recognizes a protein present on neuroblastoma cells. Researchers have already shown that the 3F8 antibody can be administered safely to neuroblastoma patients. They want to determine the effects of the combination of chemotherapy, NK cells, and 3F8 antibody on patients’ cancers and bone marrow function, and how to maximize its benefits in treating cancer.