This randomized phase II trial is studying the side effects and how well giving tipifarnib together with etoposide works in treating older patients with newly diagnosed, previously untreated acute myeloid leukemia. Tipifarnib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as etoposide, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving tipifarnib together with etoposide may kill more cancer cells.
OBJECTIVES: I. To compare the efficacy and toxicity of two schedules of tipifarnib plus etoposide as induction therapy in older patients with newly diagnosed, previously untreated acute myeloid leukemia. II. To study mechanisms of leukemia cell resistance to tipifarnib in combination with etoposide. OUTLINE: This is a multicenter study. Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive 600 mg of oral tipifarnib twice daily on days 1-14 and 100 mg of oral etoposide once daily on days 1-3 and 8-10. ARM II: Patients receive 400 mg of oral tipifarnib twice daily on days 1-14 and 200 mg of oral etoposide once daily on days 1-3 and 8-10. (closed to accrual as of November 2008) Treatment in both arms repeats every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed at 30 days and then every 90 days thereafter.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
84
Given orally
Given orally
Blood and Marrow Transplant Group of Georgia
Atlanta, Georgia, United States
Johns Hopkins University/Sidney Kimmel Cancer Center
Baltimore, Maryland, United States
University of Michigan
Ann Arbor, Michigan, United States
Mayo Clinic
Rochester, Minnesota, United States
Weill Medical College of Cornell University
New York, New York, United States
Complete Response
Bone marrow showing less than 5% myeloblasts with normal maturation of all cell lines, an ANC of at least 1000/mcL and a platelet count of 100,000 mcL, absence of blast in peripheral blood, absence of identifiable leukemic cells in the bone marrow, clearance of disease-associated cytogenetic abnormalities, and clearance of any previously existing extramedullary disease. A CR must be confirmed 4 to 6 weeks after the initial documentation. If possible, at least one bone marrow biopsy should be performed to confirm the CR.
Time frame: 6 months
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