Evidence map›Paper›PMID 26574606›Full record

ArticleBlood2016

When are breast cancer patients at highest risk of venous thromboembolism? A cohort study using English health care data.

Alex J Walker, Joe West, Tim R Card, Colin Crooks, Cliona C Kirwan, Matthew J Grainge

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 4 pooled it
7.4field-weighted citation impact, top 2% 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

63 citing papers in PubMed, 4 syntheses or guidelines pooled it, 128 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Article
  7. Review
  8. Review
  9. Article
  10. Sex Differences in Cancer-Associated Thrombosis.International journal of molecular sciences · 2026
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. A Rare Case of Right Atrial Thrombus in a Patient With Recurrent Classical Hodgkin Lymphoma.Journal of community hospital internal medicine perspectives · 2024
    Article
  20. Observational

3 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Alex J WalkerDivision of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom; and.
Joe WestDivision of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom; and.ORCID http://orcid.org/0000-0002-1135-9356
Tim R CardDivision of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom; and.
Colin CrooksDivision of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom; and.
Cliona C KirwanInstitute of Cancer, University of Manchester, University Hospital of South Manchester, Wythenshawe Hospital, Manchester, United Kingdom.
Matthew J GraingeDivision of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom; and.ORCID http://orcid.org/0000-0001-7181-4042
University of Nottingham · GBUniversity of Manchester · GB

Funding

Cancer Research UK 12079Cancer Research UK C17683/A12079Department of Health NIHR-CS-011-014
6 · The paper itself

Abstract

Patients with breast cancer are at increased risk of venous thromboembolism (VTE), particularly in the peridiagnosis period. However, no previous epidemiologic studies have investigated the relative impact of breast cancer treatments in a time-dependent manner. We aimed to determine the impact of breast cancer stage, biology, and treatment on the absolute and relative risks of VTE by using several recently linked data sources from England. Our cohort comprised 13,202 patients with breast cancer from the Clinical Practice Research Datalink (linked to Hospital Episode Statistics and Cancer Registry data) diagnosed between 1997 and 2006 with follow-up continuing to the end of 2010. Cox regression analysis was performed to determine which demographic, treatment-related, and biological factors independently affected VTE risk. Women had an annual VTE incidence of 6% while receiving chemotherapy which was 10.8-fold higher (95% confidence interval [CI], 8.2-14.4; absolute rate [AR], 59.6 per 1000 person-years) than that in women who did not receive chemotherapy. After surgery, the risk was significantly increased in the first month (hazard ratio [HR], 2.2; 95% CI, 1.4-3.4; AR, 23.5; reference group, no surgery), but the risk was not increased after the first month. Risk of VTE was noticeably higher in the 3 months after initiation of tamoxifen compared with the risk before therapy (HR, 5.5; 95% CI, 2.3-12.7; AR, 24.1); however, initiating therapy with aromatase inhibitors was not associated with VTE (HR, 0.8; 95% CI, 0.5-1.4; AR, 28.3). In conclusion, women receiving chemotherapy for breast cancer have a clinically important risk of VTE, whereas an increased risk of VTE immediately after endocrine therapy is restricted to tamoxifen.

Indexed as

RegistriesAdultAgedAged, 80 and overBreast NeoplasmsEnglandFemaleHumansMiddle AgedRetrospective StudiesRisk FactorsTime FactorsVenous Thromboembolism

Identifiers

PMID26574606
PMCPMC4778298
OpenAlexW2295090382

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.