RATIONALE: A peripheral stem cell transplant may be able to replace blood-forming cells that were destroyed by chemotherapy and radiation therapy, or that have become cancer. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Giving cyclophosphamide and fludarabine together with total-body irradiation followed by cyclosporine and mycophenolate mofetil before the transplant may stop this from happening.
PURPOSE: This clinical trial is studying how well giving combination chemotherapy together with radiation therapy followed by cyclosporine and mycophenolate mofetil works in treating patients who are undergoing a donor stem cell transplant for hematologic cancer, metastatic breast cancer, or kidney cancer.
- myelodysplastic syndromes (MDS)