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Mielcarek, Marco; Furlong, Terry; O'Donnell, Paul V.; Storer, Barry E.; McCune, Jeannine S.; Storb, Rainer; Carpenter, Paul A.; Flowers, Mary E.D.; Appelbaum, Frederick R.; Martin, Paul J.
Blood, 03/2016, Letnik: 127, Številka: 11Journal Article
The cumulative incidence of National Institutes of Health (NIH)-defined chronic graft-versus-host disease (GVHD) requiring systemic treatment is ∼35% at 1 year after transplantation of granulocyte colony-stimulating factor (G-CSF)–mobilized blood cells from HLA-matched related or unrelated donors. We hypothesized that high-dose cyclophosphamide given after G-CSF–mobilized blood cell transplantation would reduce the cumulative 1-year incidence of chronic GVHD to 15% or less. Forty-three patients with high-risk hematologic malignancies (median age, 43 years) were enrolled between December 2011 and September 2013. Twelve (28%) received grafts from related donors, and 31 (72%) received grafts from unrelated donors. Pretransplant conditioning consisted of fludarabine and targeted busulfan (n = 25) or total body irradiation (≥12 Gy; n = 18). Cyclophosphamide was given at 50 mg/kg per day on days 3 and 4 after transplantation, followed by cyclosporine starting on day 5. The cumulative 1-year incidence of NIH-defined chronic GVHD was 16% (95% confidence interval, 5-28%). The cumulative incidence estimates of grades 2-4 and 3-4 acute GVHD were 77% and 0%, respectively. At 2 years, the cumulative incidence estimates of nonrelapse mortality and recurrent malignancy were 14% and 17%, respectively, and overall survival was projected at 70%. Of the 42 patients followed for ≥1 year, 21 (50%) were relapse-free and alive without systemic immunosuppression at 1 year after transplantation. Thus, myeloablative pretransplant conditioning can be safely combined with high-dose cyclophosphamide after transplantation, and the risk of chronic GVHD associated with HLA-matched mobilized blood cell grafts can be substantially reduced. This trial was registered at www.clinicaltrials.gov as #NCT01427881. •With conventional immunosuppression, the incidence of chronic GVHD is higher after transplantation of mobilized blood compared with marrow.•Administration of cyclophosphamide after mobilized blood cell transplantation is associated with a low incidence of chronic GVHD.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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