Alternate Title
Basic Trial Information
Objectives
Entry Criteria
Expected Enrollment
Outline
Trial Contact Information
Registry Information

Alternate Title

Arsenic Trioxide and Imatinib Mesylate in Treating Patients With Accelerated Phase or Blastic Phase Chronic Myelogenous Leukemia or Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia

Basic Trial Information

Phase Type Status Age Sponsor Protocol IDs Phase II, Phase I Treatment Completed 18 and over NCI MSKCC-03126 NCT00081133

Objectives

Primary

1. Determine the maximum tolererated dose of arsenic trioxide when administered with imatinib mesylate in patients with accelerated or blastic phase chronic myelogenous leukemia or Philadelphia chromosome-positive acute lymphoblastic leukemia.
2. Determine the rate of complete morphologic remission in the bone marrow of patients treated with this regimen.

Entry Criteria

Disease Characteristics:

• Diagnosis of one of the following:
  • Chronic myelogenous leukemia (CML) in one of the following phases:
    • Blastic phase*
    • Accelerated phase*
      • No appropriate donors for stem cell transplantation

     [Note: *Must have received high-dose (600-800 mg/day) imatinib mesylate of no more than 3 months duration]

  • Acute lymphoblastic leukemia
    • Philadelphia chromosome positive by cytogenetic confirmation
      • Patients with only bcr-abl-positive disease by polymerase chain reaction are not eligible
    • > 10% blasts in the bone marrow



• No isolated extramedullary disease

Prior/Concurrent Therapy:

Biologic therapy

• No prior peripheral blood stem cell or bone marrow transplantation

Chemotherapy

• Prior hydroxyurea allowed
• No other concurrent chemotherapy

Endocrine therapy

• Not specified

Radiotherapy

• Not specified

Surgery

• More than 4 weeks since prior major surgery and recovered

Other

• Prior anagrelide allowed
• No concurrent warfarin for therapeutic anticoagulation
  • Concurrent low molecular weight heparin is allowed

Patient Characteristics:

Age

• 18 and over

Performance status

• ECOG 0-2

Life expectancy

• Not specified

Hematopoietic

• Not specified

Hepatic

• Bilirubin ≤ 2 times upper limit of normal (ULN)
• AST ≤ 2 times ULN
• INR and PTT ≤ 1.5 times ULN (except for patients on anticoagulation therapy)

Renal

• Creatinine ≤ 2 times ULN

Cardiovascular

• Baseline QTc intervals < 480 ms
• No chronic arrhythmias
• No active coronary artery disease

Other

• No chronic electrolyte abnormalities
• No prior non-compliance to medical regimens
• No patients who are considered potentially unreliable
• No active serious infection
• No other active malignancies except superficial epithelial cancers
• Not pregnant or nursing
• Negative pregnancy test
• Fertile patients must use effective barrier contraception during and for at least 3 months after study participation

Expected Enrollment

A total of 6-43 patients (6-12 for phase I and 37 [including 6 patients from phase I] for phase II) will be accrued for this study within 2 years.

Outline

This is a phase I dose-escalation study of arsenic trioxide followed by a phase II study.

• Phase I:
  • Induction therapy: Patients receive oral imatinib mesylate once daily on days 1-35 (weeks 1-5) and arsenic trioxide IV over 1-4 hours on days 1-5, 8-12, 15-19, and 22-26 (weeks 1-4).

    Patients undergo bone marrow evaluation on week 5. Patients achieving a morphologic remission proceed to consolidation therapy. Patients not achieving morphologic remission receive a second course of imatinib mesylate as above on weeks 6-10 and arsenic trioxide as above on weeks 6-9. Patients are re-evaluated on week 10. Patients achieving morphologic remission proceed to consolidation therapy. Patients not achieving a morphologic remission are removed from study.

  
  
  
  • Consolidation therapy: Patients receive oral imatinib mesylate as in induction therapy on approximately weeks 6-11 (or weeks 11-16*) and arsenic trioxide IV over 1-4 hours on days 1, 3, 5, 8, 10, 12, 15, 17, 19, 22, 24, and 26 (approximately weeks 6-9 OR weeks 11-14*).

    Patients who remain in morphologic remission receive a second course of imatinib mesylate as in induction therapy on approximately weeks 12-17 (or weeks 17-22*) and arsenic trioxide as above (in consolidation therapy) on approximately weeks 12-15 (or weeks 17-20*).

     [Note: *For patients who receive a second course of induction therapy]

  
  
  

  Cohorts of 6 patients receive escalating doses of arsenic trioxide until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 6 patients experience dose-limiting toxicity.

• Phase II: Patients receive arsenic trioxide at the MTD and imatinib mesylate as in phase I.

Treatment in both phases continues in the absence of unacceptable toxicity or disease progression.

After completion of consolidation therapy, patients may continue imatinib mesylate off study at the discretion of the physician. Patients who become candidates for stem cell transplantation at any time during the study are removed from study.

Trial Contact Information

Trial Lead Organizations

Memorial Sloan-Kettering Cancer Center

Ellin Berman, MD, Principal investigator		Ph: 212-639-7762; 800-525-2225

Registry Information
Official Title		A Phase I/II Study to Determine Safety and Efficacy of Arsenic Trioxide (Trisneox™) in Combination with Imatinib (STI571, Gleevec™) in Patients with Chronic Myelogenous Leukemia in Accelerated or Blastic Phase Disease or Ph+ Acute Lymphoblastic Leukemia
Trial Start Date		2003-12-09
Registered in ClinicalTrials.gov		NCT00081133
Date Submitted to PDQ		2004-02-23
Information Last Verified		2005-04-18
NCI Grant/Contract Number		P30-CA08748

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