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Clinical Trial Summary

The goal is to compare the drug combinations clofarabine/idarubicin/ara-C, clofarabine/ara-C, and clofarabine/idarubicin in the treatment of patients with Acute Myeloid Leukemia, high-grade MDS, or myeloid blast phase of Chronic Myeloid Leukemia who have relapsed following their initial therapy.


Clinical Trial Description

Clofarabine is a new drug that was designed to help treat leukemia. Ara-C and idarubicin are drugs that are commonly used to help treat leukemia. Before treatment starts, you will be asked questions about your medical history and have a complete physical exam. You will have blood samples (about 1 tablespoon) collected for routine lab tests. You will either have an echocardiogram or a multiple-gated acquisition (MUGA) scan to check on the function of your heart. You will have a sample of bone marrow collected to check on the status of the disease. To collect a bone marrow sample, an area of the hip or chest bone is numbed with anesthetic and a small amount of bone marrow is withdrawn through a large needle. Women who are able to have children must have a negative blood or urine pregnancy test. After each cycle of therapy, you will not receive the next cycle of chemotherapy until your blood counts have recovered and any possible side effects have gone away (for around 3 to 6 weeks). If the disease gets worse or side effects become too severe, treatment will stop. You must stay in Houston for the first 4 to 6 weeks (average) of treatment and are required to return to Houston to receive each additional cycle of chemotherapy (up to 6 days each cycle). You will be assigned to receive treatment with clofarabine plus idarubicin and ara-C. For participants in the clofarabine/idarubicin/ara-C group, the clofarabine will be given by vein over 1 hour once a day for 5 days in a row, on Days 2 to 6 of each cycle. Idarubicin will be given by vein over 30 minutes for 3 days in a row, on Days 1 to 3 of each cycle. Ara-C will be given by vein over 2 hours for 5 days in a row, on Days 1 to 5 of each cycle. Idarubicin is usually started around 1 hour after the completion of clofarabine, and ara-C about 4 hours after the start of the clofarabine infusion. This 6 day period is called a cycle of chemotherapy. You will receive at least 1 cycle of therapy. If after 1 or 2 cycles of therapy it is found that the disease is responding to therapy, you may continue to receive therapy for up to 4 additional courses of "consolidation therapy". During the "consolidation therapy" you will also be given treatment courses with ara-C alone. When ara-C is given alone it will be given as a continuous infusion, 24 hours a day, for 5 days in a row. You will be given a portable pump so that this treatment can be done as an outpatient. The combination drug courses and the ara-C courses will alternate (ara-C alone, combination, ara-C alone, combination) for a total of 4 courses. If it is found that the disease is not responding to chemotherapy, you will be taken off the study and your doctor will discuss other treatment options with you. Before you receive each dose of drug(s), you will have a complete physical exam. During treatment, you will have blood (about 1 tablespoon) collected at least once a week during the first 2 courses of therapy, then every 2-4 weeks after. Bone marrow samples will be collected every other week during treatment to check on the status of the disease. The blood and bone marrow samples may be collected more often if your doctor feels it is necessary. If, at any time, the disease gets worse or you experience any intolerable side effects, you will be taken off the study and your doctor will discuss other treatment options with you. After your last course of treatment, you will have a follow-up visit scheduled. At this visit, you will have blood (about 1 tablespoon) collected for routine tests. You will have a sample of bone marrow collected to check on the status of the disease. You will also have a repeat echocardiogram or MUGA scan to check on the function of your heart. This is an investigational study. Clofarabine has been authorized by the FDA to be used in research only. Idarubicin and ara-C are both FDA approved and are commercially available. Up to 120 participants will take part in this study. All will be enrolled at M. D. Anderson. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT00067028
Study type Interventional
Source M.D. Anderson Cancer Center
Contact
Status Completed
Phase Phase 2
Start date December 2003
Completion date June 2013

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