S0530 Cytarabine and Clofarabine in Treating Patients With Relapsed or Refractory Acute Lymphoblastic Leukemia
RATIONALE: Drugs used in chemotherapy, such as cytarabine and clofarabine, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more cancer cells.
PURPOSE: This phase II trial is studying how well giving cytarabine together with clofarabine works in treating patients with relapsed or refractory acute lymphoblastic leukemia.
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||A Phase II Trial of Cytarabine and Clofarabine in Patients With Relapsed or Refractory Acute Lymphoblastic Leukemia (ALL)|
- Number of Patients With Complete Remission [ Time Frame: Between day 28 and day 35 inclusive ]Complete remission is defined as: less than 5% bone marrow blasts, neutrophils greater or equal to 1,000 per microliter, platelets greater than 100,000 per microliter, no blasts in the peripheral blood, and no extramedullary disease
- Expression of Nucleoside Transporters [ Time Frame: On average, two weeks before treatment started ]Expression was examined in paraffin-embedded tissue by immunohistochemistry. Intensities were scored on a 0-2+ scale. High expression was a score of 2+.
- Number of Patients With Very Poor Risk Cytogenetics [ Time Frame: On average, 2 weeks before treatment started ]
- Toxicity [ Time Frame: Patients were assess for adverse events after each induction cycle (up to two cycles) and after the one consolidation cycle ]Number of patients with Grade 3-5 adverse events that are related to study drug by given type of adverse event
|Study Start Date:||October 2006|
|Study Completion Date:||January 2013|
|Primary Completion Date:||December 2008 (Final data collection date for primary outcome measure)|
Experimental: Induc, ReInduc, Consol, clofarabine, cytarabine
Induction: 40mg/m2/d; IV over 1 hr; days 1-5 Re-induction (if necessary): 40mg/m2/d; IV over 1 hr; days 1-5 Consolidation: 40mg/m2/d; IV over 1 hr; days 1-4
Induction: 40mg/m2/d; IV over 1 hr; days 1-5 Re-induction (if necessary): 40mg/m2/d; IV over 1 hr; days 1-5 Consolidation: 40mg/m2/d; IV over 1 hr; days 1-4Drug: cytarabine
Induction: 1g/m2/d; IV over 2 hrs; days 1-5 Re-induction (if necessary): 1g/m2/d; IV over 2 hrs; days 1-5 Consolidation: 1g/m2/d; IV over 2 hrs; days 1-4
- Determine whether the complete remission rate in adult patients with relapsed or refractory acute lymphoblastic leukemia (ALL) is sufficiently high after treatment with cytarabine and clofarabine to warrant further investigation.
- Estimate the frequency and severity of toxicities associated with this dosing schedule of cytarabine and clofarabine.
- Investigate, preliminarily, the prognostic effects of cytogenetic features on response to treatment in these patients.
Other objectives (if funding allows):
- Investigate, preliminarily, the prognostic effects of laboratory correlates (expression of nucleoside transporters, expression of other pertinent genes by tissue microarray) and FISH features on response to treatment in these patients
OUTLINE: This is an open-label, multicenter study.
- Induction therapy (1 or 2 courses): Patients receive induction therapy comprising clofarabine IV over 1 hour followed 4 hours later by cytarabine IV over 2 hours on days 1-5 (course 1). Patients who achieve a response (5-25% blasts in the bone marrow with a ≥ 50% reduction in blasts from initial bone marrow aspirate) receive 1 more course of induction therapy beginning no later than day 45. Patients who achieve complete remission (< 5% blasts in the bone marrow) after 1 or 2 courses of induction therapy may proceed to consolidation therapy.
- Consolidation therapy (1 course): Beginning within 60 days after the first day of the last induction therapy, patients may receive consolidation therapy comprising clofarabine IV over 1 hour followed 4 hours later by cytarabine IV over 2 hours on days 1-4.
After completion of study treatment, patients are followed periodically for up to 5 years.
PROJECTED ACCRUAL: A total of 35 patients will be accrued for this study.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00337168
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|Study Chair:||Anjali Advani, MD||The Cleveland Clinic|
|Principal Investigator:||Jerry Radich, MD||Fred Hutchinson Cancer Research Center|