Thromboses and hemorrhages are common in MPN patients with high JAK2V617F allele burden.

Abstract:

:The most common causes of morbidity and mortality in myeloproliferative neoplasms (MPN) are thrombotic and hemorrhagic complications. The JAK2V617F mutation, commonly found in MPN, correlates with several clinical and laboratory characteristics even if the relevance of JAK2V617F allele burden in the natural history of these diseases is unclear. In this study we searched, a relation between thrombotic and hemorrhagic complications and JAK2V617F allele burden level in MPN patients. We evaluated 253 consecutive MPN [121 essential thrombocythemia (ET), 124 polycythemia vera (PV), and 8 primary myelofibrosis (PMF)] patients in whom the JAK2V617F allele burden was available, all studied and followed (median 8.8 years) in our department. Patients were stratified accordingly to their JAK2V617F allele burden, into four quartiles (1st <25%, 2nd 26-50%, 3rd 51-75%, and 4th >75%). Significantly higher incidence of thromboses (p = 0.001) and hemorrhages (p < 0.001) during follow-up has been observed in higher quartiles when compared to lower ones. Thrombosis- and hemorrhage-free survivals were poorer in patients belonging to the highest quartile. Our data suggest that MPN patients with JAK2V617F allele burden higher than 75% have to be considered as high risk patients, being prone to develop thrombo-hemorrhagic complications during the disease course.

journal_name

Ann Hematol

journal_title

Annals of hematology

authors

Bertozzi I,Bogoni G,Biagetti G,Duner E,Lombardi AM,Fabris F,Randi ML

doi

10.1007/s00277-017-3040-8

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

1297-1302

issue

8

eissn

0939-5555

issn

1432-0584

pii

10.1007/s00277-017-3040-8

journal_volume

96

pub_type

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