• Leukemia research · Feb 2011

    JAK2(V617F) allele burden in polycythemia vera correlates with grade of myelofibrosis, but is not substantially affected by therapy.

    • Richard T Silver, Katherine Vandris, Y Lynn Wang, Fernando Adriano, Amy V Jones, Paul J Christos, and Nicholas C P Cross.
    • Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medical College, New York, NY 10065-4896, USA. rtsilve@med.cornell.edu
    • Leuk. Res. 2011 Feb 1; 35 (2): 177-82.

    AbstractIn a series of 105 patients with polycythemia vera, we retrospectively determined whether the JAK2(V617F) mutation correlated with severity of disease phenotype. Higher JAK2(V617F) allele burden correlated with more advanced myelofibrosis, greater splenomegaly, and higher white blood cell count, but not with age, gender, hematocrit level, or frequency of phlebotomy prior to cytoreductive therapy. Although a subgroup at increased risk for thrombosis was not clearly defined, there was a suggestion that frequency of thrombosis increased as the JAK2(V617F) allele burden increased. The JAK2(V617F) allele burden did not change significantly in treated patients with serial JAK2 analyses.Copyright © 2010 Elsevier Ltd. All rights reserved.

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