Evidence map›Paper›PMID 33570640›Full record

ArticleBlood advances2021

Plasma levels of von Willebrand factor and future risk of incident venous thromboembolism.

Magnus S Edvardsen, Kristian Hindberg, Ellen-Sofie Hansen, Vânia M Morelli, Thor Ueland, Pål Aukrust, Sigrid K Brækkan, Line H Evensen, John-Bjarne Hansen

Open access · goldAbstract read
In one paragraph

Article in Blood advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
8.4field-weighted citation impact, top 1% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. RAB5C Increases Endothelial Release of VWF by Regulating Vesicle Trafficking.Arteriosclerosis, thrombosis, and vascular biology · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Non-cirrhotic intrahepatic portal hypertension: Is the gun loaded?Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2024
    Article
  18. Observational
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

Magnus S EdvardsenK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
Kristian HindbergK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
Ellen-Sofie HansenK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
Vânia M MorelliK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
Thor UelandResearch Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; and.
Pål AukrustResearch Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; and.
Sigrid K BrækkanK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
Line H EvensenK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
John-Bjarne HansenK. G. Jebsen Thrombosis Research and Expertise Center, Department of Clinical Medicine, The University of Tromsø-The Arctic University of Norway, Tromsø, Norway.
UiT The Arctic University of Norway · NOOslo University Hospital · NOUniversity Hospital of North Norway · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Several case-control studies have reported elevated plasma von Willebrand factor (VWF) levels in patients with venous thromboembolism (VTE) compared with controls. However, because few studies have investigated the association in a prospective design, it is unclear whether elevated plasma VWF is a risk factor or a consequence of the VTE event. Therefore, we aimed to investigate the prospective association between plasma VWF levels and risk of VTE, as well as to perform subgroup analyses of deep vein thrombosis (DVT) and pulmonary embolism. We established a population-based nested case-control study of 414 VTE cases and 843 age- and sex-matched controls based on the Tromsø study cohort (1994-2007). Blood samples were collected at cohort baseline (1994-1995). Odds ratios (ORs) with 95% confidence intervals (CIs) for VTE were estimated across quartiles of VWF levels. We found that the risk of VTE increased linearly across quartiles of VWF levels (P for trend = .023). Participants with VWF in the highest quartile had an OR of 1.45 (95% CI, 1.03-2.03) for VTE compared with those in the lowest quartile. The association was strongest for unprovoked VTE (OR, 2.74; 95% CI, 1.66-4.54) and unprovoked DVT in particular (OR, 6.73; 95% CI, 3.07-14.76). Further adjustment for body mass index, C-reactive protein, hypertension, estrogen use, and smoking had a modest effect on the risk estimates. To conclude, we found a dose-dependent relationship between plasma VWF levels and future risk of incident VTE, and unprovoked events in particular. Our findings suggest that VWF may represent a promising biomarker for future risk of incident VTE.

Indexed as

Pulmonary EmbolismVenous ThromboembolismCase-Control StudiesHumansProspective Studiesvon Willebrand Factorvon Willebrand Factor

Identifiers

PMID33570640
PMCPMC7805310
OpenAlexW3119195789

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.