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Busulfan Compared With Cyclophosphamide in Patients Undergoing Total-Body Irradiation Plus Peripheral Stem Cell Transplantation for Advanced Myelodysplastic Syndrome or Related Acute Myeloid Leukemia

2014-08-27 03:57:37 | BioPortfolio

Summary

RATIONALE: Peripheral stem cell transplantation may be able to replace immune cells that were destroyed by chemotherapy or radiation therapy used to kill tumor cells. It is not yet known if total-body irradiation plus peripheral stem cell transplantation is more effective with busulfan or with cyclophosphamide for myelodysplastic syndrome or acute myeloid leukemia.

PURPOSE: Randomized phase III trial to compare the effectiveness of busulfan with that of cyclophosphamide in patients undergoing total-body irradiation plus peripheral stem cell transplantation for advanced myelodysplastic syndrome or related acute myeloid leukemia.

Description

OBJECTIVES: I. Compare event free survival after total body irradiation (TBI) plus busulfan versus TBI plus cyclophosphamide followed by allogeneic peripheral blood stem cell transplantation in patients with advanced myelodysplastic syndrome (MDS) or MDS related acute myeloid leukemia. II. Determine the distribution of pharmacokinetic parameters for busulfan in those patients randomized to the busulfan treatment arm. III. Investigate the prognostic significance for event free survival of prior history of red cell transfusions, cytogenetic pattern, and of functional drug resistance at diagnosis in these patients. IV. Estimate the frequencies of cytogenetic and genetic changes during disease progression in these patients.

OUTLINE: This a randomized, multicenter study. Patients are stratified according to age (40 and under vs 41-55) and diagnosis and International Prognostic Scoring System (IPSS) risk group (myelodysplastic syndrome (MDS)/IPSS - intermediate 1 vs MDS/IPSS - intermediate 2 vs MDS/IPSS high risk vs MDS related acute myeloid leukemia). Patients are randomized to one of two treatment arms. Arm I: Patients receive busulfan IV over 2 hours every 6 hours on days -7 to -4 for a total of 16 doses. Arm II: Patients receive cyclophosphamide IV over 2 hours on days -5 and -4. Patients receive total body irradiation (TBI) twice a day on days -3 to -1; peripheral blood stem cell transplantation from genotypically HLA identical sibling on day 0; cyclosporine IV every 12 hours on days -1 to 60, and then tapering in the absence of graft versus host disease; and methotrexate IV on days 1, 3, 6, and 11. Patients are followed every 6 months for 5 years.

PROJECTED ACCRUAL: A total of 240 patients (120 per treatment arm) will be accrued for this study over 5 years.

Study Design

Allocation: Randomized, Primary Purpose: Treatment

Conditions

Leukemia

Intervention

busulfan, cyclophosphamide, cyclosporine, methotrexate, allogeneic bone marrow transplantation, radiation therapy

Location

Good Samaritan Medical Center
Phoenix
Arizona
United States
85062-2989

Status

Active, not recruiting

Source

National Cancer Institute (NCI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:57:37-0400

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Medical and Biotech [MESH] Definitions

Techniques for the removal of subpopulations of cells (usually residual tumor cells) from the bone marrow ex vivo before it is infused. The purging is achieved by a variety of agents including pharmacologic agents, biophysical agents (laser photoirradiation or radioisotopes) and immunologic agents. Bone marrow purging is used in both autologous and allogeneic BONE MARROW TRANSPLANTATION.

Agents that destroy bone marrow activity. They are used to prepare patients for BONE MARROW TRANSPLANTATION or STEM CELL TRANSPLANTATION.

The transference of BONE MARROW from one human or animal to another for a variety of purposes including HEMATOPOIETIC STEM CELL TRANSPLANTATION or MESENCHYMAL STEM CELL TRANSPLANTATION.

Transfer of HEMATOPOIETIC STEM CELLS from BONE MARROW or BLOOD between individuals within the same species (TRANSPLANTATION, HOMOLOGOUS) or transfer within the same individual (TRANSPLANTATION, AUTOLOGOUS). Hematopoietic stem cell transplantation has been used as an alternative to BONE MARROW TRANSPLANTATION in the treatment of a variety of neoplasms.

An alkylating agent having a selective immunosuppressive effect on BONE MARROW. It has been used in the palliative treatment of chronic myeloid leukemia (MYELOID LEUKEMIA, CHRONIC), but although symptomatic relief is provided, no permanent remission is brought about. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), busulfan is listed as a known carcinogen.

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