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  • Title: Bone marrow transplantation for chronic granulocytic leukemia.
    Author: Bacigalupo A, Frassoni F, Van Lint MT, Occhini D, Pittaluga PA, Repetto M, Piaggio G, Sessarego M, Caimo A, Congiu A.
    Journal: Cancer; 1986 Nov 15; 58(10):2307-11. PubMed ID: 3530428.
    Abstract:
    Thirty patients with chronic granulocytic leukemia (CGL), were given cyclophosphamide 60 mg/kg on each of 2 consecutive days, followed by total body irradiation (TBI) 10 Gy and an HLA-identical bone marrow transplant (BMT). Eleven patients were in the accelerated phase of their disease (CGLacc) or in second/secondary chronic phase (CGL-2CP), with a median age of 33 years: four patients died of transplant related complications, and four of recurrent leukemia; three patients are alive and well 19, 31, 33 months from BMT. The actuarial 33-month survival is 27%. The actuarial relapse rate is 50%. Nineteen patients were in their first chronic phase (1CP), with a median age of 32 years: three died of graft versus host disease (GvHD), two of infection, and two of acute respiratory distress syndrome (ARDS); 12 are alive and well 6 to 29 months post-BMT. The actuarial 29-month survival is 63%. The actuarial survival of patients younger than 30 years is 63%, compared to 62% for patients older than 30 (P = 0.1). The survival of patients grafted within or after 24 months from the onset of CGL is respectively 87% and 45% (P = 0.04). None of the patients grafted in 1CP had a true hematologic-cytogenetic relapse. The Ph' chromosome was detected on one occasion in two patients 12, 13 months post-BMT: they both remain hematologically normal and Ph1-negative 3 to 6 months later, after discontinuation of cyclosporin A. This study confirms that survival exceeding 60% can be obtained in CGL in the first chronic phase, whereas less than 30% of patients will survive if grafted in accelerated, second/secondary chronic phase, mainly because of leukemic relapse. The duration of the disease seems to be relevant to the outcome of the transplant. The effect of post-transplant immunosuppression, in our case cyclosporin A, on the interaction between normal and Ph1-positive hemopoietic cells, may deserve further attention.
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