Barbui, Tiziano, Thiele, Juergen, Gisslinger, Heinz, Finazzi, Guido, Carobbio, Alessandra ORCID: 0000-0001-9664-7084, Rumi, Elisa ORCID: 0000-0002-7572-9504, Randi, Maria Luigia, Betozzi, Irene, Vannucchi, Alessandro M., Pieri, Lisa ORCID: 0000-0003-1812-8072, Carrai, Valentina, Gisslinger, Bettina, Muellauer, Leonhard, Ruggeri, Marco, Rambaldi, Alessandro ORCID: 0000-0002-3739-7502 and Tefferi, Ayalew (2014). Masked polycythemia Vera (mPV): Results of an international study. Am. J. Hematol., 89 (1). S. 52 - 55. HOBOKEN: WILEY-BLACKWELL. ISSN 1096-8652

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Abstract

We examined the baseline features and clinical outcomes of 140 patients presenting with JAK2V617F positivity and a bone marrow morphology conforming with WHO criteria of polycythemia vera (PV), but a hemoglobin level of <18.5 g/dL in males (range 16.0-18.4) and <16.5 g/dL in females (range 15.0-16.4). This cohort operationally referred to as masked PV (mPV) was compared with 257 patients with overt PV and displayed male predominance, a more frequent history of arterial thrombosis and thrombocytosis. Incidence of thrombosis was similar between the two groups but mPV displayed significantly higher rates of progression to myelofibrosis and acute leukemia and inferior survival. In multivariable analysis mPV diagnosis was an independent predictor of poor survival along with age >65 years and leukocyte count >10 x 10(9)/L. Our data suggest that mPV is a heterogeneous myeloproliferative neoplasia and not necessarily an early/ pre-polycythemic form of classical PV that at onset in a small fraction of patients clinically may mimic essential thrombocythemia. On the other hand, the majority mPV may have a longer prodrome of undiagnosed PV or a disease biology akin to primary myelofibrosis-post PV myelofibrosis that could explain the worsening of outcome in comparison to overt/classical manifestations. Am. J. Hematol. 89:52-54, 2014. (c) 2013 Wiley Periodicals, Inc.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Barbui, TizianoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thiele, JuergenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gisslinger, HeinzUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Finazzi, GuidoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carobbio, AlessandraUNSPECIFIEDorcid.org/0000-0001-9664-7084UNSPECIFIED
Rumi, ElisaUNSPECIFIEDorcid.org/0000-0002-7572-9504UNSPECIFIED
Randi, Maria LuigiaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Betozzi, IreneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vannucchi, Alessandro M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pieri, LisaUNSPECIFIEDorcid.org/0000-0003-1812-8072UNSPECIFIED
Carrai, ValentinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gisslinger, BettinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Muellauer, LeonhardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ruggeri, MarcoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rambaldi, AlessandroUNSPECIFIEDorcid.org/0000-0002-3739-7502UNSPECIFIED
Tefferi, AyalewUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-450986
DOI: 10.1002/ajh.23585
Journal or Publication Title: Am. J. Hematol.
Volume: 89
Number: 1
Page Range: S. 52 - 55
Date: 2014
Publisher: WILEY-BLACKWELL
Place of Publication: HOBOKEN
ISSN: 1096-8652
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
RED-CELL MASS; BONE-MARROW; ESSENTIAL THROMBOCYTHEMIA; ABSOLUTE ERYTHROCYTOSIS; DIAGNOSIS; CLASSIFICATION; MANAGEMENT; NEOPLASMS; IMPACTMultiple languages
HematologyMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/45098

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