A Study of Imatinib With Reinduction Chemotherapy Using Mitoxantrone, Etoposide and Cytarabine in Patients With Relapsed/Refractory C-kit Positive (AML) Acute Myeloid Leukemia

This study has been completed.
Sponsor:
Information provided by:
University Health Network, Toronto
ClinicalTrials.gov Identifier:
NCT01126814
First received: May 3, 2010
Last updated: May 19, 2010
Last verified: May 2010
  Purpose

This is a Phase I-II study evaluating the toxicity and efficacy of imatinib combined with mitoxantrone, etoposide and high-dose cytarabine reinduction therapy in relapsed and refractory AML. Patients will be treated initially at a 200 mg dose of imatinib; if tolerated, the imatinib dose will be escalated in subsequent cohorts to 300 mg and 400 mg. Once the recommended dose is determined, the remaining patients will be treated at that dose, to evaluate the antileukemic activity of the regimen. Patients achieving complete remission will receive consolidation therapy with imatinib combined with high-dose cytarabine and mitoxantrone, followed by maintenance imatinib.


Condition Intervention Phase
Leukemia
Drug: Imatinib (Gleevec)
Phase 1
Phase 2

Study Type: Interventional
Study Design: Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase I-II Study Evaluating the Safety and Efficacy of Imatinib Mesylate (Gleevec) Combined With Reinduction Chemotherapy Using Mitoxantrone, Etoposide and Cytarabine in Patients With Relapsed/Refractory C-kit Positive Acute Myeloid Leukemia

Resource links provided by NLM:


Further study details as provided by University Health Network, Toronto:

Primary Outcome Measures:
  • Toxicity (hematologic and non-hematologic) of the combination of Imatinib and Chemotherapy consisting of Mitoxantrone, Etoposide and Ara-c [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]

    Hematologic toxicity

    • Number of days to ANC > 0.5 and 1.0.
    • Number of days until platelets > 20 and > 50, independent of platelet transfusions.
    • Number of days until RBC transfusion independent. Non-hematologic toxicity, as per NCI common toxicity criteria Hematologic dose-limiting toxicity (DLT) defined as > 40 days to ANC > 0.5 or platelets > 20 independent of transfusions.

  • Response rate - CR, MLFS and PR as per section 7.1 [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]
    • Complete response
    • Morphologic leukemia-free state
    • Partial remission (PR•No response (NR): Does not meet the criteria for CR, MLFS or PR.

  • Maximum tolerated dose of Imatinib when given in combination with chemotherapy [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]
    Maximum tolerated dose (MTD) of Imatinib (200, 300, 400 mg) when used in combination with NOVE-HiDAC induction and consolidation. MTD defined as highest dose resulting in up to 2/6 grade III-IV hematologic (as defined above) or non-hematologic DLTs per dose level. Non-hematologic DLTs as defined by NCIC CTC.


Secondary Outcome Measures:
  • Toxicity of imatinib maintenance therapy. [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]

    Hematologic

    • Number of days to ANC > 0.5 and 1.0.
    • Number of days until platelets > 20 and > 50, independent of platelet transfusions.
    • Number of days until RBC transfusion independent. Non-hematologic toxicity, as per NCI common toxicity criteria

  • Number of Participants with adverse events as a measure of safety and tolerability [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]
    Toxicity of imatinib maintenance therapy.

  • Remission-free survival and overall survival. [ Time Frame: 2 years ] [ Designated as safety issue: Yes ]
    Median duration of remission free survival. Median overall survival and 2 year overall survival.

  • Total and phosphorylated c-kit activity at Days 1 and 4. [ Time Frame: 2 years ] [ Designated as safety issue: No ]
    levels of total and phosphorylated c-kit - pre and post imatinib/Gleevec

  • Levels of downstream components of c-kit pathway at Days 1 & 4. [ Time Frame: 2 years ] [ Designated as safety issue: No ]
    levels of phosphorylation ERK and AKT - pre and post imatinib/Gleevec


Enrollment: 35
Study Start Date: July 2004
Study Completion Date: April 2010
Primary Completion Date: September 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: one Drug: Imatinib (Gleevec)

Detailed Description:

Induction therapy:

  • Imatinib 200-400 mg p.o. daily x 10 days, Days 1-10 (see dose escalation scheme in Section 5.4 below).
  • Mitoxantrone 10 mg/m2 daily x 5 days, Days 4-8.
  • Etoposide 100 mg/m2 daily x 5 days, Days 4-8.
  • Cytarabine 1.5 grams/m2 q12h x 4 doses, Days 9-10 (for patients aged 60 years and over, 1.0 gram/m2).

Only one induction course will be permitted. Only patients achieving CR will proceed to consolidation and maintenance.

Consolidation therapy, maximum 2 cycles (for patients achieving CR):

  • Imatinib 200-400 mg p.o. daily x 8 days, Days 1-8 (see dose escalation scheme in Section 5.4 below).
  • Mitoxantrone 12 mg/m2 daily x 2 days, Days 4-5.
  • Cytarabine 3 grams/m2 q12h x 6 doses, Days 4,6,8. For patients aged 60 years and over, the dose will be reduced to 1.5 grams/m2.

Maintenance therapy (for patients still in CR at end of consolidation):

Imatinib 600 mg p.o. daily, until relapse or toxicity (see dose modification criteria in Section 5.6.6 below). Patients must receive at least one consolidation cycle before being permitted to proceed to maintenance therapy (see Section 5.6 for details). Maintenance therapy with imatinib will be provided for a maximum period of 1 year.

Dose escalation scheme:

Imatinib will be used during induction and consolidation at one of the following dose levels:

Level -1 100 mg daily Level 1 200 mg daily Level 2 300 mg daily Level 3 400 mg daily

  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • AML, all subtypes except APL.
  • Prior induction therapy consisting of cytarabine 100-200 mg/m2 plus an anthracycline.
  • One of the following:

    • persistent leukemia after induction therapy.
    • relapse within two years of achieving complete remission with induction therapy. Any consolidation therapy is acceptable, including stem cell transplantation.
  • At least 10% bone marrow blasts, or biopsy confirmed extramedullary disease.
  • Positivity for c-kit (CD117) in at least 30% of blasts as measured by flow cytometry.
  • Aged 18-65.
  • ECOG performance status < 3 (see Appendix I).
  • No chemotherapy within the previous four weeks, other than hydroxyurea to control counts. If hydroxyurea is used, it must be stopped at least 24 hours prior to starting imatinib.
  • Able to given informed consent.

Exclusion Criteria:

  • Active uncontrolled infection.
  • Active CNS leukemia.
  • Serum creatinine > 200 umol/L.
  • Serum bilirubin > 1.5 x ULN, AST or ALT > 2x ULN.
  • Left ventricular ejection fraction < 50%.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01126814

Locations
Canada, Ontario
Princess Margaret Hospital
Toronto, Ontario, Canada, M5G 2M9
Sponsors and Collaborators
University Health Network, Toronto
  More Information

No publications provided

Responsible Party: Dr. J. Brandwein, University Health Network
ClinicalTrials.gov Identifier: NCT01126814     History of Changes
Other Study ID Numbers: 04-0147-C
Study First Received: May 3, 2010
Last Updated: May 19, 2010
Health Authority: Canada: Ethics Review Committee
Canada: Health Canada

Keywords provided by University Health Network, Toronto:
Gleevec
c-kit
aml

Additional relevant MeSH terms:
Leukemia
Leukemia, Myeloid
Leukemia, Myeloid, Acute
Neoplasms
Neoplasms by Histologic Type
Imatinib
Mitoxantrone
Analgesics
Antineoplastic Agents
Central Nervous System Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Protein Kinase Inhibitors
Sensory System Agents
Therapeutic Uses
Topoisomerase II Inhibitors
Topoisomerase Inhibitors

ClinicalTrials.gov processed this record on October 29, 2014