Last updated on September 2009

Study of STI571 in the Treatment of Patients With Idiopathic Hypereosinophilic Syndrome (HES) and Eosinophilic Leukemias


Brief description of study

The purpose of this study is to assess the clinical anti-proliferative activity of STI571 (Glivec®, Novartis, Pharma) in patients with HES defined as: 1. Idiopathic Hypereosinophilic Syndrome (secondary HES), defined as a peripheral blood eosinophilia greater than 1,500 cells/µL for longer than 6 months, absence of other apparent aetiologies for eosinophilia and with or without signs and symptoms of organ involvement, irrespective to expression of any of imatinib targets (c-Kit receptor, PDGFR, bcr-abl receptor) on bone marrow cells. 2. Familiar hypereosinophilia defined as a peripheral blood eosinophilia greater than 1,500 cells/µL for longer than 6 months, absence of other apparent aetiologies for eosinophilia and signs and symptoms of organ involvement, irrespective to expression of any of imatinib targets (c-Kit receptor, PDGFR, bcr-abl receptor) on bone marrow cells, and with a recognized or reported cases of hypereosinophilia in the patient's family. 3. Chronic myeloproliferative disorder, defined as chronic eosinophilic leukemia (CEL) with the presence of blasts (>10%) in the bone marrow (BM), or the presence of immature eosinophils in different tissues, or an aggressive clinical course or the presence of clonal cytogenetic anomalies. 4. Myeloproliferative disorder (MPD) with eosinophilia, eosinophilic leukemia or chronic myelomonocytic leukemia [myeloproliferative disorders/myelodysplastic syndromes (MPD/MDS)] with evidence of: - t(5;12)(q33;p13) by cytogenetic or fluorescent in situ hybridization (FISH) analysis, or - ETV6/TEL-PDGFRB fusion transcript by reverse transcription polymerase chain reaction (RT-PCR), or - PDGFRB disruption, assessed or suspected, by other translocations with additional partner genes (H4, HIP1, CEV14 and Rab5) 5, or - MPD/MDS who have constitutive activation of the gene for platelet-derived growth factor receptor beta (PDGFRB) 6 by point mutations

Clinical Study Identifier: NCT00276926

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