Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2008-3-25
pubmed:abstractText
Post-polycythemia vera myelofibrosis (post-PV MF) is a late evolution of PV. In 647 patients with PV, we found that leukocytosis leukocyte count>(15x10(9)/L) at diagnosis is a risk factor for the evolution of post-PV MF. In a series of 68 patients who developed post-PV MF, median survival was 5.7 years. Hemoglobin level less than 100 g/L (10 g/dL) at diagnosis of post-PV MF was an independent risk factor for survival. The course of post-PV MF, however, is a dynamic process that implies a progressive worsening of clinical parameters. Using a multivariate Cox proportional hazard regression with time-dependent covariates, we found that a dynamic score based on hemoglobin level less than 100 g/L (10 g/dL), platelet count less than 100x10(9)/L, and leukocyte count more than 30x10(9)/L is useful to predict survival at any time from diagnosis of post-PV MF. The resulting hazard ratio of the score was 4.2 (95% CI: 2.4-7.7; P<.001), meaning a 4.2-fold worsening of survival for each risk factor acquired during follow up. In conclusion, leukocytosis at diagnosis of PV is a risk factor for evolution in post-PV MF. A dynamic score based on hemoglobin level, and platelet and leukocyte count predicts survival at any time from diagnosis of post-PV MF.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-4971
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
111
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3383-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:18187660-Adult, pubmed-meshheading:18187660-Aged, pubmed-meshheading:18187660-Aged, 80 and over, pubmed-meshheading:18187660-Follow-Up Studies, pubmed-meshheading:18187660-Hemoglobins, pubmed-meshheading:18187660-Humans, pubmed-meshheading:18187660-Leukocyte Count, pubmed-meshheading:18187660-Leukocytosis, pubmed-meshheading:18187660-Male, pubmed-meshheading:18187660-Middle Aged, pubmed-meshheading:18187660-Models, Biological, pubmed-meshheading:18187660-Platelet Count, pubmed-meshheading:18187660-Polycythemia Vera, pubmed-meshheading:18187660-Predictive Value of Tests, pubmed-meshheading:18187660-Primary Myelofibrosis, pubmed-meshheading:18187660-Prognosis, pubmed-meshheading:18187660-Regression Analysis, pubmed-meshheading:18187660-Risk Factors, pubmed-meshheading:18187660-Survival Rate
pubmed:year
2008
pubmed:articleTitle
A dynamic prognostic model to predict survival in post-polycythemia vera myelofibrosis.
pubmed:affiliation
Department of Hematology, Fondazione Istituto di ricovero e cura a carattere scientifico Policlinico San Matteo, University of Pavia, Italy. f.passamonti@smatteo.pv.it
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Multicenter Study