Abstract：
:We examined the prevalence and prognostic relevance of bone marrow reticulin fibrosis in 526 patients with World Health Organization-defined polycythemia vera evaluated at the time of initial diagnosis. Seventy-four patients (14%) displayed mostly grade 1 reticulin fibrosis, with only 2 cases showing higher-grade fibrosis. Presenting clinical and laboratory characteristics, including JAK2V617F allele burden, between patients with and without fibrosis were similar for the most part, with the exception of a higher prevalence of palpable splenomegaly in patients with fibrosis (P < .01). Patients with fibrosis were less prone to experience thrombosis during their clinical course (1.1 vs 2.7 per 100 patient-years; P = .03) and more prone to develop post-polycythemia vera myelofibrosis (2.2 vs 0.8 per 100 patient-years; P = .01). There was no significant difference between the 2 groups in terms of overall or leukemia-free survival. The present study clarifies the incidence, degree, and prognostic relevance of bone marrow fibrosis obtained at time of initial diagnosis of polycythemia vera.
journal_name
Bloodjournal_title
Bloodauthors
Barbui T,Thiele J,Passamonti F,Rumi E,Boveri E,Randi ML,Bertozzi I,Marino F,Vannucchi AM,Pieri L,Rotunno G,Gisslinger H,Gisslinger B,Müllauer L,Finazzi G,Carobbio A,Gianatti A,Ruggeri M,Nichele I,D'Amore E,Rambalddoi
10.1182/blood-2011-11-393819subject
Has Abstractpub_date
2012-03-08 00:00:00pages
2239-41issue
10eissn
0006-4971issn
1528-0020pii
blood-2011-11-393819journal_volume
119pub_type
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