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RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Bone marrow transplantation may be able to replace immune cells that were destroyed by chemotherapy to kill tumor cells. It is not yet known which regimen of combination chemotherapy with or without bone marrow transplantation is more effective in treating promyelocytic leukemia
PURPOSE: Randomized phase III trial to compare the effectiveness of different combination chemotherapy regimens with or without bone marrow transplantation in treating patients who have promyelocytic leukemia.
- Determine the complete remission (CR) rate in patients with acute promyelocytic leukemia treated with induction comprising tretinoin (ATRA) and idarubicin (IDA).
- Determine the presence of the promyelocyte-retinoic acid receptor alpha (PML-RARa) transcript using polymerase chain reaction (PCR) in patients with CR after 3 sequential consolidation regimens comprising cytarabine (ARA-C) plus IDA, followed by mitoxantrone plus etoposide, and then IDA, ARA-C, and thioguanine.
- Determine the percentage of patients who complete the protocol, including PML-RARa-positive patients treated with post-consolidation bone marrow transplantation (BMT) and PML-RARa-negative patients treated with maintenance comprising mercaptopurine (MP) plus methotrexate (MTX) vs ATRA only vs MP plus MTX alternating with ATRA vs observation only.
- Compare the disease-free survival (DFS) and overall survival of these patients treated with these regimens.
- Determine the rate and type of grade 4 toxicity, treatment-related mortality, and time to granulocyte and platelet recovery associated with each phase of treatment in these patients.
- Determine the DFS and overall survival of PML-RARa-positive patients who are ineligible for BMT and are treated with maintenance comprising MP plus MTX alternating with ATRA.
- Compare the quality of life of patients treated with these regimens.
OUTLINE: This is a randomized, multicenter study.
- Induction: Patients receive oral tretinoin (ATRA) twice daily beginning on day 1 and continuing for 30-90 days and idarubicin (IDA) IV over 15 minutes on days 2, 4, and 8. ATRA is discontinued before day 90 in the presence of complete remission (CR) at day 30 or 60, unacceptable toxicity, or disease progression or in the absence of at least a partial remission at day 60. Patients who achieve CR during induction proceed to consolidation.
- First consolidation: Within 2 weeks after achieving CR, patients receive cytarabine (ARA-C) IV over 6 hours followed 3 hours later by IDA IV over 15 minutes on days 1-4.
- Second consolidation:Within 4-6 weeks after initiation of first consolidation, patients receive mitoxantrone IV over 30 minutes and etoposide IV over 1 hour (beginning 12 hours after initiation of mitoxantrone infusion) on days 1-5.
- Third consolidation:Within 4-6 weeks after initiation of second consolidation, patients receive ARA-C subcutaneously every 8 hours and oral thioguanine every 8 hours on days 1-5 and IDA IV over 15 minutes on day 1.
Patients proceed to group A if they are promyelocyte-retinoic acid receptor alpha (PML-RARa)-negative after recovery from third consolidation. Patients proceed to allogeneic bone marrow transplantation (BMT) on group B if they are PML-RARa-positive, achieve CR, are under age 55, and have an HLA-A, -B, and -DR identical, chronic myelomonocytic leukemia nonreactive, family donor after recovery from third consolidation. Patients proceed to autologous BMT on group B if they are PML-RARa-positive, achieve CR, and have no identical family donor or are age 55 and over after recovery from third consolidation. Patients proceed to arm III of group A if they are PML-RARa-positive and ineligible for BMT after recovery from third consolidation.
- Group A (maintenance): Patients are stratified according to participating center and initial white blood cell count. Patients are randomized to 1 of 4 treatment arms.
- Arm I: Patients receive oral mercaptopurine (MP) daily and oral methotrexate (MTX) weekly.
- Arm II: Beginning 3 months after recovery from third consolidation, patients receive oral ATRA on days 1-15.
Treatment on arms I and II continues every 3 months for 2 years in the absence of disease progression or unacceptable toxicity.
- Arm III: Patients receive 1 course of arm I treatment, alternated by 1 course of arm II treatment. Alternating treatment continues every 3 months for 2 years in the absence of disease progression or unacceptable toxicity.
- Arm IV: Patients undergo observation only.
- Group B: Eligible patients receive conditioning comprising cyclophosphamide (CTX) IV for 2 days followed by total body irradiation or oral busulfan on days -9 to -6 and CTX on days -5 to -2. Autologous or allogeneic bone marrow is infused on day 0 (within 4 months after initiation of third consolidation).
Quality of life is assessed at baseline, after induction, after each consolidation regimen, and then every 3 months beginning after treatment on group A or B.
Patients are followed every 3 months.
PROJECTED ACCRUAL: A total of 750 patients will be accrued for this study within 7.5 years.
Allocation: Randomized, Primary Purpose: Treatment
busulfan, cyclophosphamide, cytarabine, etoposide, idarubicin, mercaptopurine, methotrexate, mitoxantrone hydrochloride, thioguanine, tretinoin, allogeneic bone marrow transplantation, autologous bone marrow transplantation, radiation therapy
Active, not recruiting
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:59:01-0400
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A semisynthetic derivative of PODOPHYLLOTOXIN that exhibits antitumor activity. Etoposide inhibits DNA synthesis by forming a complex with topoisomerase II and DNA. This complex induces breaks in double stranded DNA and prevents repair by topoisomerase II binding. Accumulated breaks in DNA prevent entry into the mitotic phase of cell division, and lead to cell death. Etoposide acts primarily in the G2 and S phases of the cell cycle.
Congener of CYTARABINE that is metabolized to cytarabine and thereby maintains a more constant antineoplastic action.
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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Precursor of an alkylating nitrogen mustard antineoplastic and immunosuppressive agent that must be activated in the LIVER to form the active aldophosphamide. It has been used in the treatment of LYMPHOMA and LEUKEMIA. Its side effect, ALOPECIA, has been used for defleecing sheep. Cyclophosphamide may also cause sterility, birth defects, mutations, and cancer.
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