RATIONALE: Giving chemotherapy and total-body irradiation before a donor peripheral stem cell transplant helps stop the growth of cancer or abnormal cells. It also 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 tacrolimus, methotrexate, cyclosporine, mycophenolate mofetil, and sirolimus before and after transplant may stop this from happening. PURPOSE: This phase II trial is studying how well donor peripheral stem cell transplant works in treating patients with advanced hematologic cancer or other disorders.
OBJECTIVES: Primary * To evaluate hematopoietic recovery, using neutrophil and platelet engraftment as the primary criterion, in patients with advanced hematologic malignancies or other disorders undergoing allogeneic peripheral blood stem cell (PBSC) transplantation from matched unrelated donors. * To evaluate the incidence of acute and chronic graft-versus-host-disease (GVHD) in patients undergoing allogeneic PBSC transplantation from matched unrelated donors. Secondary * To evaluate the impact of HLA class I and class II allele-matching on the incidence of GVHD and on the survival outcome of these patients. * To evaluate overall survival, disease-free survival, and relapse in these patients. OUTLINE: Patients are stratified according to type of conditioning regimen (myeloablative vs reduced-intensity myeloablative). Patients are assigned to a conditioning regimen according to diagnosis, age, disease status, prior radiotherapy, and prior autologous stem cell transplantation. * Conditioning regimen: * Regimen I: Patients undergo total body irradiation (TBI) on days -7 to -4 and receive cyclophosphamide IV on days -3 and -2. Alternatively, patients may receive cyclophosphamide on days -7 and -6 and undergo TBI on days -4 to -1. * Regimen II: Patients receive busulfan IV over 2 hours once on day -8 and then every 6 hours on days -7 to -4. Patients also receive cyclophosphamide IV on days -3 and -2. * Regimen III: Patients undergo TBI on days -7 to -4 and receive etoposide IV on day -3. * Regimen IV: Patients receive fludarabine phosphate IV over 30 minutes on days -7 to -3 and melphalan IV on day -2. * Regimen V: Patients receive fludarabine phosphate IV over 30 minutes on days -4 to -2 and undergo TBI on day 0. * Regimen VI: Patients receive busulfan IV over 3 hours and fludarabine phosphate IV over 30 minutes on days -5 to -2. * Allogeneic peripheral blood stem cell (PBSC) transplantation: All patients undergo allogeneic PBSC transplantation on day 0. * Graft-versus-host disease (GVHD) prophylaxis: Patients receive one of the following GVHD prophylaxis regimens: * Regimen A: Patients receive tacrolimus IV or orally on days -1 to 180 and methotrexate IV on days 1, 3, 6, and 11. * Regimen B: Patients receive cyclosporine IV or orally twice daily on days -1 to 180, mycophenolate mofetil IV over 2 hours or orally twice daily on days 0-27, and methotrexate IV on days 1, 3, and 6. * Regimen C: Patients receive tacrolimus IV continuously or orally, and oral sirolimus beginning on day -3. Patients also receive methotrexate IV on days 1, 3, and 6. After completion of study therapy, patients are followed periodically.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
260
Neutrophil Engraftment - The Days Till ANC Recovery
The primary engraftment endpoint, neutrophil engraftment, is defined as the first of three consecutive days on which the absolute neutrophil count is \> 500/µL. The duration and extent of neutrophil engraftment is the time from transplant to neutrophil engraftment.
Time frame: Up to 180 days post transplant
Two-year Overall Survival
Overall survival (OS) was measured from peripheral stem cell infusion to death from any cause. It was estimated using the Kaplan-Meier method; the 95% confidence interval was calculated using Greenwood's formula. Participants were followed up to 2 years after transplant and Kaplan-Meier survival analysis was used to generate the two-year Overall Survival estimate presented.
Time frame: Up to 2 years post transplant
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