Imatinib Mesylate in Treating Patients With Myelofibrosis
Conditions
- Chronic Myelomonocytic Leukemia
- Essential Thrombocythemia
- Polycythemia Vera
- Primary Myelofibrosis
Interventions
- DRUG: imatinib mesylate
- OTHER: laboratory biomarker analysis
Sponsor
National Cancer Institute (NCI)