ArticleResearch and practice in thrombosis and haemostasis2020
Increased von Willebrand factor levels in polycythemia vera and phenotypic differences with essential thrombocythemia.
Article in Research and practice in thrombosis and haemostasis, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- Association of JAK2V617F allele burden and clinical correlates in polycythemia vera: a systematic review and meta-analysis.Annals of hematology · 2024Pooled it
- Philadelphia-negative myeloproliferative neoplasms and acquired von Willebrand syndrome: only pertinent at diagnosis?Research and practice in thrombosis and haemostasis · 2026Article
- Von Willebrand factor and JAK2V617F variant allele frequency predict thrombosis and bleeding in patients with myeloproliferative neoplasms.Annals of hematology · 2025Article
- Thromboxane biosynthesis and future events in diabetes: the ASCEND trial.European heart journal · 2024Article
- Practical management of the haemorrhagic complications of myeloproliferative neoplasms.British journal of haematology · 2022Review
- Low ADAMTS-13/VWF ratio and altered gut-liver axis predict complications of advanced chronic liver disease: a pilot study.Gastroenterology report · 2022Article
- Recent Advances in the Use of Molecular Analyses to Inform the Diagnosis and Prognosis of Patients with Polycythaemia Vera.International journal of molecular sciences · 2021Review
- Increased von Willebrand factor levels in polycythemia vera and phenotypic differences with essential thrombocythemia.Research and practice in thrombosis and haemostasis · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAcquired von Willebrand factor (VWF) deficiency was described in Philadelphia-negative myeloproliferative neoplasms, especially in essential thrombocythemia (ET). VWF phenotype in contemporary patients with polycythemia vera (PV) remains less explored.
objectivesTo characterize the VWF phenotype in PV and to compare VWF phenotype in PV with matched healthy subjects and ET patients. PATIENTS/
methodsWe studied 48 PV patients, treated according to current recommendations (hematocrit ≤ 45%, on low-dose aspirin prophylaxis); 48 healthy and 41 subjects with ET, all sex, age, and blood group matched. We measured VWF antigen, activity, multimeric pattern, ADAMTS-13, and factor VIII (FVIII) antigen.
resultsIn patients with PV, VWF antigen and activity were significantly higher than in healthy subjects (antigen: 119[96-137] vs 93[79-107] IU/dL; activity: 114[95-128] vs 90[79-107] IU/dL, respectively, medians and interquartile,
conclusionsPatients with PV show increased VWF and FVIII levels, predicted by JAK2-p.V617F burden and erythrocyte count. At variance with ET, acquired VWF defect was not observed in PV. High VWF/FVIII levels may sustain the thrombotic diathesis of PV and may be investigated as biomarkers for risk stratification.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.