An allogeneic blood or bone marrow (hematopoietic stem cell) transplant can be done to provide you with marrow or blood stem cells from a healthy donor that can develop a normal blood forming system. An allogeneic stem cell transplant can cure the problems of the marrow and blood system. It cannot cure the chromosome fragility of the whole body. When allogeneic stem cell transplants have been done for the treatment of FA using stem cells from donors other than matched siblings, they have been associated with a high risk of rejection of the transplant and of a complication called graft-versus-host disease.