Mycophenolate mofetil for the prophylaxis of acute GVHD in HLA‐mismatched bone marrow transplant patients

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Abstract
Mycophenolate mofetil (MMF), a new immunosuppressive drug successfully used in renal and heart transplant recipients, was used in combination with cyclosporin A (CsA), methotrexate (MTX) and prednisolone for the prophylaxis of acute graft‐versus‐host disease (aGVHD) after bone marrow transplantation (BMT) and peripheral blood stem cell transplantation (PBSCT) from human leukocyte antigen (HLA)‐mismatched, unrelated (n=9) and related donors (n=4) in an open single‐centre phase II study. Thirteen patients, transplanted from HLA‐mismatched donors of 18–57 yr of age, received 1 g MMF daily, starting at day 10, in addition to CsA and prednisolone for aGVHD prophylaxis. All patients were engrafted between days 13 and 15. Four of the 13 patients experienced aGVHD grade I/II (n=2) and grade III (n=2). All patients except 3 were alive on day 100 post‐transplantation. No severe adverse effects of MMF were recorded. In our pilot study, we demonstrated that MMF can be used safely for the prophylaxis of aGVHD.