Clinical trial NCT00038675: Therapy of HES, PV, Atypical Chronic Myelocytic Leukemia (CML) or Chronic Myelomonocytic Leukemia (CMML), and Mastocytosis With Imatinib Mesylate
Official title: Therapy of Hypereosinophilic Syndrome, Polycythemia Vera, Atypical CML or CMML With Platelet Derived Growth Factor (PDGF-R) Fusion Genes, or Mastocytosis With Imatinib Mesylate (STI571)
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Chronic Myelomonocytic Leukemia
Chronic Myeloid Leukemia
Polycythemia Vera
Hypereosinophilic Syndrome
Mastocytosis
Keywords: Leukemia
Chronic Myelomonocytic Leukemia
Chronic Myeloid Leukemia
Polycythemia Vera
Hypereosinophilic Syndrome
Mastocytosis
Imatinib Mesylate
Gleevec
Lead sponsor: M.D. Anderson Cancer Center
Sponsor class: OTHER
Collaborators: name: Novartis Pharmaceuticals
First posted: 2002-06-05
Enrollment: 125
Sex: ALL
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: The goal of this clinical research study is to see if Gleevec, known as imatinib mesylate (STI571), can improve the disease condition in patients with hypereosinophilic syndrome, polycythemia vera, atypical CML or CMML with PDGF-R fusion genes, or mastocytosis.

Detailed description: Imatinib mesylate is a chemical compound that blocks a protein that is responsible for a certain form of leukemia. However, imatinib mesylate also blocks other important proteins that may be responsible for other blood diseases such as myeloproliferative disorders.

Patients in this study will take 4 tablets of imatinib mesylate by mouth every day. Patients with HES will take 1 tablet daily to begin, and may go up to 4 tablets daily depending on response. Imatinib mesylate should be taken each morning at breakfast with a large glass of water. Bottles containing the tablets will be given to the patient every month. Unused supplies must be returned at the end of the study. Patients taking oral hydroxyurea to control their blood counts, can continue it during the first month of imatinib mesylate treatment, but must stop taking it from then on.

After completing 2 months of therapy, response to imatinib mesylate will be evaluated. If the response is good, treatment with imatinib mesylate alone will be continued. If the response is not good, the dose of imatinib mesylate will be increased to 8 tablets daily (4 in the morning and 4 in the evening) or may be decreased to 3 tablets daily. This will be based on how the drug is tolerated. Treatment may be continued for up to one year, or as long as it is judged best to control the leukemia.

Patients will be asked to visit their doctor for a physical exam and vital signs. The frequency of doctor visits will vary depending on physical condition.

Blood tests (about 2 teaspoons) will be done once each year. The blood samples will be used for routine lab tests. A bone marrow sample will also be taken to check and measure cells related to the disease after 3 - 4 months, then every 3-6 months in the first year. If the initial bone marrow sample does not show disease, repeated bone marrows will not be done.

This is an investigational study. Imatinib mesylate has been approved in CML for patients whose disease has not responded to interferon. However, this is an investigational study in patients with myeloproliferative diseases. The FDA has authorized the use of imatinib mesylate in research. A total of 145 patients will take part in this study. All will be enrolled at MD Anderson.

Eligibility criteria: Inclusion Criteria:

1. Participants must have 1 of the following hematopoietic malignancies: Hypereosinophilic syndrome (HES), Polycythemia vera (PV), Atypical CML or CMML with PDGF-R fusion genes, Mastocytosis, Serum bilirubin less than 2 mg%, serum creatinine less than 2 mg% unless abnormality is considered due to hematologic malignancy by investigator, Eastern Cooperative Oncology Group (ECOG) performance status \< 3, life expectancy \> 12 wks,
2. continued from above. Participants must sign informed consent indicating they are aware of the investigational nature of the study, in keeping with policies of the hospital, women of pregnancy potential must practice birth control. Women and men must continue birth control for the duration of the trial and at least 3 months after the last dose of study drug. Inclusion of women and minorities: As per NIH policy, women and members of minorities will be included as they are referred in the relevant populations.
3. continued from above. There are no exclusions of women or minorities based on the study objectives, New York Heart Association (NYHA) Class \<3.

Exclusion Criteria:

N/A

Primary outcomes:
measure: Number of Participants With a Complete Response (CR)
timeFrame: after 2 months of therapy, up to 1 year.
Secondary outcomes:
measure: Duration of Response
timeFrame: From response evaluation (first evaluation following 2 months therapy) to disease progression or death or until disease progression whichever occurs first, up to 12 years and 5 months
measure: Overall Survival
timeFrame: From the start of therapy to death or disease progression, assessed up to 12 years and 5 months
Other outcomes:
Locations:
city: Houston
country: United States
facility: UT MD Anderson Cancer Center
state: Texas
Study officials:
affiliation: UT MD Anderson Cancer Center
name: Jorge Cortes, MD
role: PRINCIPAL_INVESTIGATOR
References: