Bone Marrow Transplantation Using CD34-Selected Stem Cells From Related or Unrelated Donors in Treating Participants With Cancer or Other Disorders

Brief Summary

This expanded access protocol studies bone marrow transplantation using CD34-selected stem cells from related or unrelated donors in treating participants with cancer or other disorders. Stem cells collected from the donor will be processed using a new device called CliniMACS CD34 Reagent System which marks the blood cells collected from the donor with a special protein called "antibody" that tags only the donor stem cells, sorting out other cells of the blood and immune system. This is done to remove, at least partially, some of the T cells. T cells are the cells in the blood that work as scavengers of the immune system deciding what belongs and what does not. These cells can sometimes cause rejection of the donor graft or a condition called graft-versus host disease (GVHD), where the donor cells can attack the body of the recipient. A bone marrow transplantation using CD34-selected stem cells may reduce the risk of these unwanted side effects of transplant as much as possible.

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