Evidence map›Paper›PMID 30606788›Full record

SynthesisHaematologica2019

The Khorana score for prediction of venous thromboembolism in cancer patients: a systematic review and meta-analysis.

Frits I Mulder, Matteo Candeloro, Pieter W Kamphuisen, Marcello Di Nisio, Patrick M Bossuyt, Noori Guman, Kirsten Smit, Harry R Büller, Nick van Es, CAT-prediction collaborators

Registry-linked trialAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Haematologica, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05729464 (Risk Factors and Prediction Model of Cancer-associated Venous Thromboembolism), which is not on this map. Cited by 182 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
182citing papers in PubMed, 7 pooled it
–field-weighted citation impact
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.

NCT05729464 unknown statusnot on this mapstarted 2022, after this paper: background citation

Risk Factors and Prediction Model of Cancer-associated Venous Thromboembolism

TypeobservationalSponsorYongsheng JiangRan2022 to 2023Enrolled700ConditionsVenous Thromboses, Neoplasms
3 · Its place in the literature

Who cites it

182 citing papers in PubMed, 7 syntheses or guidelines pooled it.

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  3. The effectiveness and safety of thromboprophylaxis in cancer patients based on Khorana score: a meta-analysis and systematic review of randomized controlled trials.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2020
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  7. Efficacy of Factor Xa Inhibitors Versus Placebo in Thromboprophylaxis for Cancer-Associated Thromboembolism: A Systematic Review and Meta-analysis.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
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122 more citing papers are in PubMed but not listed here.

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

10 authors.

Frits I MulderTergooi Hospitals, Department of Internal Medicine, Hilversum, the Netherlands f.i.mulder@amc.nl.
Matteo CandeloroUniversity G. D'Annunzio, Department of Medicine and Ageing Sciences, Chieti, Italy.
Pieter W KamphuisenTergooi Hospitals, Department of Internal Medicine, Hilversum, the Netherlands.
Marcello Di NisioUniversity G. D'Annunzio, Department of Medicine and Ageing Sciences, Chieti, Italy.
Patrick M BossuytAmsterdam UMC, University of Amsterdam, Department of Vascular Medicine, Amsterdam Cardiovascular Science, Amsterdam, the Netherlands.
Noori GumanAmsterdam UMC, University of Amsterdam, Department of Vascular Medicine, Amsterdam Cardiovascular Science, Amsterdam, the Netherlands.
Kirsten SmitAmsterdam UMC, University of Amsterdam, Department of Vascular Medicine, Amsterdam Cardiovascular Science, Amsterdam, the Netherlands.
Harry R BüllerAmsterdam UMC, University of Amsterdam, Department of Vascular Medicine, Amsterdam Cardiovascular Science, Amsterdam, the Netherlands.
Nick van EsAmsterdam UMC, University of Amsterdam, Department of Vascular Medicine, Amsterdam Cardiovascular Science, Amsterdam, the Netherlands.
CAT-prediction collaborators

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We aimed to evaluate the performance of the Khorana score in predicting venous thromboembolic events in ambulatory cancer patients. Embase and MEDLINE were searched from January 2008 to June 2018 for studies which evaluated the Khorana score. Two authors independently screened studies for eligibility, extracted data, and assessed risk of bias. Additional data on the 6-month incidence of venous thromboembolism were sought by contacting corresponding authors. The incidence in each Khorana score risk group was estimated with random effects meta-analysis. A total of 45 articles and eight abstracts were included, comprising 55 cohorts enrolling 34,555 ambulatory cancer patients. For 27,849 patients (81%), 6-month follow-up data were obtained. Overall, 19% of patients had a Khorana score of 0 points, 64% a score of 1 or 2 points, and 17% a score of 3 or more points. The incidence of venous thromboembolism in the first six months was 5.0% (95%CI: 3.9-6.5) in patients with a low-risk Khorana score (0 points), 6.6% (95%CI: 5.6-7.7) in those with an intermediate-risk Khorana score (1 or 2 points), and 11.0% (95%CI: 8.8-13.8) in those with a high-risk Khorana score (3 points or higher). Of the patients with venous thromboembolism in the first six months, 23.4% (95%CI: 18.4-29.4) had been classified as high risk according to the Khorana score. In conclusion, the Khorana score can be used to select ambulatory cancer patients at high risk of venous thromboembolism for thromboprophylaxis; however, most events occur outside this high-risk group.

Indexed as

Disease SusceptibilityFemaleHumansIncidenceMaleNeoplasmsPrognosisPublication BiasSeverity of Illness IndexVenous Thromboembolism

Identifiers

PMID30606788
PMCPMC6545838

What OpenQuestion holds

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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.