Yttrium Y 90 Anti-CD45 Monoclonal Antibody BC8(NCI)

This phase I trial studies the side effects and best dose of yttrium Y 90 anti-CD45 monoclonal antibody BC8 when given together with fludarabine phosphate and total-body irradiation followed by donor peripheral blood stem cell transplant in treating patients with multiple myeloma. Radiolabeled monoclonal antibodies, such as yttrium Y 90 anti-CD45 monoclonal antibody BC8, can find cancer cells and carry cancer-killing substances to them without harming normal cells. Giving chemotherapy drugs, such as fludarabine phosphate, and total-body irradiation before a donor peripheral blood stem cell transplant helps stop the growth of cancer cells and helps stop the patient's immune system from rejecting the donor's stem cells. When the healthy stem cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Giving yttrium Y 90 anti-CD45 monoclonal antibody BC8, fludarabine phosphate, and total-body irradiation before the transplant together with cyclosporine and mycophenolate mofetil after the transplant may stop this from happening and may be an effective treatment for multiple myeloma.

This phase I trial studies the side effects and best dose of monoclonal antibody therapy before stem cell transplant in treating patients with relapsed or refractory lymphoid malignancies. Radiolabeled monoclonal antibodies, such as yttrium-90 anti-CD45 monoclonal antibody BC8, can find cancer cells and carry cancer-killing substances to them without harming normal cells. When the healthy stem cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. Giving radiolabeled monoclonal antibody before a stem cell transplant may be an effective treatment for relapsed or refractory lymphoid malignancies.