Protein-Tyrosine Kinase Inhibitor (STI571) for Treatment of Patients With Ph+ Chronic Myeloid Leukemia

This study has been completed.
Sponsor:
Collaborator:
Novartis
Information provided by:
University of Bologna
ClinicalTrials.gov Identifier:
NCT00511303
First received: August 2, 2007
Last updated: NA
Last verified: August 2007
History: No changes posted
  Purpose

This is a Phase II, open-label, multi-center trial designed primarily to evaluate the rate of complete or major cytogenetic response of STI571 as demonstrated by a decrease in the percentage of Ph chromosome positive cells in the bone marrow, in patients with CML who are refractory to or intolerant of interferon-alpha.

During the core phase of the study, patients will receive once daily oral administration of STI571 at a dose of 400 mg, for up to 12 months. After completing 12 months of therapy patients may be eligible to receive additional therapy provided that, in the opinion of the investigator, the patient has benefited from treatment with STI571 and in the absence of safety concerns. Patients will receive STI571 on an outpatient basis.

During the extended phase (which is of indefinite duration), patients may continue STI571 until either progression to accelerated phase, blast phase, death, the development of intolerable toxicity, or the investigator feels it is no longer in the patient's best interest to continue therapy, whichever comes first. The number of visits will be at a reduced frequency. Patients who discontinue study drug will be followed for survival for up to 5 years.

STI571 will be considered active if the interferon-refractory patient population satisfies the target of achieving a complete or major response at a rate of at least 30%, within the preset error limits. Cytogenetic responses will be evaluated every three months and categorized as either complete (0% Ph+ chromosome cells), or major (1 to 35% Ph+ chromosome cells) responses. STI571 will be discontinued for any patient whose disease progresses to either the accelerated phase or blast crisis.

A minimum of 100 patients who are interferon refractory will receive STI571 administered at a dose of 400 mg once a day. In addition, the protocol is also open for patients who are intolerant to interferon-alpha in order to get a preliminary evaluation of their response to STI571 therapy. Up to 100 intolerant patients will be enrolled. Enrollment of intolerant patients will cease at 100, or whenever the 100 refractory patients are accrued, whichever comes first.


Condition Intervention Phase
Chronic Myeloid Leukemia
Drug: STI571
Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Protein-Tyrosine Kinase Inhibitor (STI571) for Treatment of Patients With Ph+ Chronic Myeloid Leukemia Who Are Resistant to or Intolerant of *-Interferon. A Phase II Study

Resource links provided by NLM:


Further study details as provided by University of Bologna:

Primary Outcome Measures:
  • To determine the rate of complete and major cytogenetic response of STI571 as demonstrated by a decrease in the percentage of Ph chromosome positive cells in the bone marrow, in patients with CML who are refractory to interferon-alpha.

Secondary Outcome Measures:
  • To quantify the molecular response of STI571 as demonstrated by a decrease of bcr/abl transcript in peripheral blood cells,
  • To determine the rate and duration of complete hematological response,
  • To evaluate the duration of complete and major cytogenetic responses,
  • To evaluate the safety profile and improvement of symptomatic parameters,
  • To evaluate the time to accelerated disease, or blast crisis,
  • To evaluate overall survival,
  • To evaluate the rate and the duration of hematologic and cytogenetic response in patients intolerant to interferon-alpha

Estimated Enrollment: 200
Study Start Date: August 2000
Detailed Description:

This Phase II trial will evaluate at least 100 patients for the rate of complete or major cytogenetic response of STI571 as demonstrated by a decrease in the percentage of Ph chromosome positive cells in the bone marrow in patients with CML who are refractory to or intolerant of interferon-alpha. Statistical considerations are based on the refractory patient population only. Intolerant patients are included as long as recruitment of the refractory patients is ongoing, up to a maximum of 100 intolerant patients, whichever comes first.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Male or female patients * 18 years of age.
  2. Patients with Ph chromosome positive CML in the chronic-phase of the disease.
  3. Patients must have documented resistance to an interferon-alpha containing therapy, defined as any of the following:

    1. Hematologic Resistance - Failure to achieve a complete hematologic response, lasting for at least 1 month despite of 6 or more months of an interferon-alpha containing regimen.
    2. Cytogenetic Resistance - Bone marrow cytogenetics showing *65% Ph chromosome positivity after at least one year of interferon-alpha based therapy
    3. Cytogenetic Refractoriness - An increase in the Ph+ chromosome bone marrow cells by at least 30 percentage points (eg., from 20% to 50%, or from 30% to 60%) confirmed by two samples at least 1 month apart, or an increase to * 65%
    4. Hematologic Refractoriness - A rising WBC count (*100% increase and to a level *20 x 109/L confirmed by two samples taken at least two weeks apart) while receiving an interferon-alpha containing regimen.
  4. Patients who have demonstrated intolerance to interferon-alpha therapy defined as: a documented * Grade 3 non-hematologic toxicity (grade 2 in case of neurologic or neuropsichiatric toxicity), persisting for more than 2 weeks, in a patient receiving an interferon-alpha containing regimen. Patients who are intolerant to interferon-alpha must be more than 3 months from time of diagnosis.
  5. Written voluntary informed consent.

Exclusion Criteria:

  1. Patients of childbearing potential without a negative pregnancy test prior to the initiation of study drug. Barrier contraceptive precautions are to be used throughout the trial in both sexes.
  2. Serum bilirubin and creatinine concentrations more than twice the upper limit of the normal range.
  3. SGOT and SGPT more than twice the upper limit of the normal range.
  4. Percentage of blasts, or basophils in the peripheral blood or bone marrow > 15%.
  5. Percentage of blasts plus promyelocytes in the peripheral blood or bone marrow ( 30%.
  6. Patients with a platelet count < 100 x 109/L
  7. Patients with an ECOG Performance Status Score * 3.
  8. Patients receiving busulfan within 6 weeks of Visit 1.
  9. Patients receiving treatment with interferon-alpha within 14 days of Visit 1.
  10. Patients receiving treatment with cytosine arabinoside within 14 days of Visit 1.
  11. Patients receiving treatment with hydroxyurea within 7 days of Visit 1.
  12. Patients who have received other investigational agents within 28 days of Visit 1.
  13. Patients with Grade 3/4 cardiac problems as defined by the New York Heart Association Criteria.
  14. Patients with a history of non-compliance to medical regimens or who are considered potentially unreliable.
  15. Patients who are likely to be submitted to any transplantation procedure during the study period (12 months)
  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: NCT00511303

Sponsors and Collaborators
University of Bologna
Novartis
Investigators
Principal Investigator: Michele Baccarani, MD Istituto di Ematologia "L e A Seragnoli"-Policlinico S.Orsola-Malpighi di Bologna
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00511303     History of Changes
Other Study ID Numbers: CML 002
Study First Received: August 2, 2007
Last Updated: August 2, 2007
Health Authority: Italy: Ethics Committee

Keywords provided by University of Bologna:
Philadelphia chromosome
protein-tyrosine kinases

Additional relevant MeSH terms:
Leukemia
Leukemia, Myeloid
Leukemia, Myelogenous, Chronic, BCR-ABL Positive
Neoplasms by Histologic Type
Neoplasms
Myeloproliferative Disorders
Bone Marrow Diseases
Hematologic Diseases
Imatinib
Antineoplastic Agents
Therapeutic Uses
Pharmacologic Actions
Protein Kinase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action

ClinicalTrials.gov processed this record on August 01, 2014