7-Hydroxystaurosporine and Perifosine in Treating Patients With Relapsed or Refractory Acute Leukemia, Chronic Myelogenous Leukemia or High Risk Myelodysplastic Syndromes

This phase I trial is studying the side effects and best dose of 7-hydroxystaurosporine when given together with perifosine in treating patients with relapsed or refractory acute leukemia, chronic myelogenous leukemia, or myelodysplastic syndromes. 7-Hydroxystaurosporine may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as perifosine, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving 7-hydroxystaurosporine together with perifosine may kill more cancer cells.

PRIMARY OBJECTIVES: I. Define the maximum tolerated dose and recommended phase II dose of UCN-01 (7-hydroxystaurosporine) administered after perifosine in patients with relapsed or refractory acute leukemia, chronic myelogenous leukemia, or high risk myelodysplastic disorders. SECONDARY OBJECTIVES: I. Evaluate the safety and toxicity of UCN-01 administered after perifosine in these patients. II. Evaluate the safety and toxicity of perifosine administered after UCN-01 in these patients. III. Document responses in patients treated with this regimen. IV. Observe the pharmacokinetics of both perifosine and UCN-01 when administered in combination. V. Study the pharmacodynamics of perifosine alone, UCN-01 alone, and in combination in leukemic blast cells. OUTLINE: This is a multicenter, dose-escalation study of 7-hydroxystaurosporine. The first patients enrolled in the study are assigned to arm 1. Once the maximum tolerated dose (MTD) is determined in arm 1, subsequent patients are enrolled in arm 2. ARM 1: Patients receive a loading dose of oral perifosine every 6 hours on day 1 followed by a maintenance dose once daily on days 2-28 of course 1 and then once daily on days 1-28 in all subsequent courses. Patients also receive 7-hydroxystaurosporine intravenously (IV) over 3 hours on day 4. Cohorts of 3-6 patients receive escalating doses of 7-hydroxystaurosporine until the MTD is determined. The MTD is defined as the dose preceding that at which 2 of 6 patients experience dose-limiting toxicity. ARM 2: Patients receive 7-hydroxystaurosporine IV over 3 hours on day 1 at the MTD determined in group I. Patients also receive oral perifosine as a loading dose every 6 hours on day 4 followed by a maintenance dose once daily on days 5-28 of course 1 and then once daily on days 1-28 in all subsequent courses. In both groups, treatment repeats every 28 days for ≥ 2 courses in the absence of disease progression or unacceptable toxicity. Patients who achieve a complete remission (CR) or a CR with incomplete hematologic recovery receive 4 additional courses beyond documentation of CR. Patients who achieve a partial remission or hematologic improvement may continue treatment in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed for 30 days and then periodically thereafter.