Cladribine, Cytarabine, and Imatinib Mesylate in Treating Patients With Refractory or Relapsed Acute Myeloid Leukemia or Blastic Phase Chronic Myelogenous Leukemia
RATIONALE: Drugs used in chemotherapy, such as cladribine and cytarabine, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Imatinib mesylate may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving cladribine and cytarabine together with imatinib mesylate may kill more cancer cells.
PURPOSE: This phase I trial is studying the side effects and best dose of imatinib mesylate when given together with cladribine and cytarabine in treating patients with refractory or relapsed acute myeloid leukemia or blastic phase chronic myelogenous leukemia.
Drug: imatinib mesylate
|Study Design:||Primary Purpose: Treatment|
|Official Title:||A Phase I Study of CLAG Regimen in Combination With Imatinib Mesylate (Gleevec) in Refractory or Relapsed Leukemias|
|Study Start Date:||March 2005|
|Study Completion Date:||October 2006|
|Primary Completion Date:||October 2006 (Final data collection date for primary outcome measure)|
- Determine the safety and feasibility of cladribine, cytarabine, and imatinib mesylate in patients with refractory or relapsed acute myeloid leukemia or blastic phase chronic myelogenous leukemia.
- Determine the maximum tolerated dose of imatinib mesylate in patients treated with this regimen.
- Correlate the expression of c-kit and the presence of c-kit mutations with clinical response in patients treated with this regimen.
- Correlate the in vitro inhibitory effects of imatinib mesylate and cytarabine on the proliferation and survival of leukemic cells with clinical response in patients treated with this regimen.
OUTLINE: This is a dose-escalation study of imatinib mesylate.
Patients receive oral imatinib mesylate once daily on days 1-15 and cladribine IV over 2 hours and cytarabine IV over 4 hours on days 3-7. Patients also receive filgrastim (G-CSF) subcutaneously on days 2-7. Treatment repeats every 15 days for 2 courses in the absence of disease progression or unacceptable toxicity.
Cohorts of 3-6 patients receive escalating doses of imatinib mesylate until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2 of 6 patients experience dose-limiting toxicity.
After completion of study treatment, patients are followed periodically for up to 1 year.
PROJECTED ACCRUAL: A total of 12-18 patients will be accrued for this study.
|United States, New York|
|James P. Wilmot Cancer Center at University of Rochester Medical Center|
|Rochester, New York, United States, 14642|
|Principal Investigator:||Camille Abboud, MD||James P. Wilmot Cancer Center|