Haematologica
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Haematologica, Vol 89, Issue 4, 497-499
Copyright © 2004 by Ferrata Storti Foundation

Case Reports

Hypereosinophilic syndrome and cyclic oscillations in blood cell counts. A clonal disorder of hematopoiesis originating in a pluripotent stem cell

L Malcovati, R La Starza, S Merante, D Pietra, C Mecucci, and M Cazzola

We studied a patient with hypereosinophilic syndrome (HES) who had myeloproliferative features, was unresponsive to imatinib mesylate, and showed cyclic oscillations in blood cell counts. No rearrangement in PDGFRA, PDGFRB and ETV6 genes was detected. Clonal analysis of hematopoiesis consistently showed skewed X-chromosome inactivation patterns in both granulocytes and T-lymphocytes, indicating a clonal myeloproliferative disorder originating in a pluripotent stem cell.




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Copyright © 2004 by the Ferrata Storti Foundation.