Graft-versus-myeloma effect in two cases.
case_report · Level V
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Abstract
BACKGROUND: Allogeneic bone-marrow transplantation (BMT) is associated with the graft-versus-leukaemia effect because of the antileukaemic action of donor lymphocytes. We describe a graft-versus-myeloma effect after BMT in multiple myeloma. METHODS: Two patients with recurrent multiple myeloma after allogeneic BMT (T cells partly depleted, 10(5) T cells infused per kg) received leucocyte infusions obtained by leukapheresis from their original marrow donors. The patients were a 48-year-old woman and a 49-year-old man. FINDINGS: Both patients developed graft-versus-host disease and achieved complete remission of myeloma. Chimerism was complete in both patients in that all peripheral blood cells were of donor origin. INTERPRETATION: We see our results as evidence for a graft-versus-myeloma effect. Using this form of adoptive immunotherapy, we could administer 1000-3000 times more T cells than with the earlier BMT.