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Therapy of HES, PV, Atypical Chronic Myelocytic Leukemia (CML) or Chronic Myelomonocytic Leukemia (CMML), and Mastocytosis With Imatinib Mesylate

Information source: M.D. Anderson Cancer Center
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Chronic Myelomonocytic Leukemia; Chronic Myeloid Leukemia; Polycythemia Vera; Hypereosinophilic Syndrome; Mastocytosis

Intervention: Imatinib Mesylate (Gleevec) (Drug)

Phase: N/A

Status: Completed

Sponsored by: M.D. Anderson Cancer Center

Official(s) and/or principal investigator(s):
Jorge Cortes, MD, Principal Investigator, Affiliation: M.D. Anderson Cancer Center


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.

Clinical Details

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 design: Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: Objective response rate

Secondary outcome: Duration of response and survival

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.


Minimum age: N/A. Maximum age: N/A. Gender(s): Both.


Inclusion Criteria: 1. Pts 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. Pts 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 in this protocol 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

Locations and Contacts

UT MD Anderson Cancer Center, Houston, Texas 77030, United States
Additional Information

M.D. Anderson's Website

Starting date: June 2001
Last updated: December 10, 2013

Page last updated: August 23, 2015

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