Evidence map›Paper›PMID 34934894›Full record

ArticleResearch and practice in thrombosis and haemostasis2021

ChAdOx1 vaccination, blood coagulation, and inflammation: No effect on coagulation but increased interleukin-6.

Loes H Willems, Magdolna Nagy, Hugo Ten Cate, Henri M H Spronk, Lotte M C Jacobs, Josephine Kranendonk, Maaike van Leeuwen, Danielle Meijer, Saskia Middeldorp, Laszlo A Groh and 1 more

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Article in Research and practice in thrombosis and haemostasis, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

9 citing papers in PubMed, 15 citations in OpenAlex.

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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

11 authors at 3 institutions in 2 countries.

Loes H WillemsDepartment of Surgery Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.ORCID https://orcid.org/0000-0002-2728-9663
Magdolna NagyDepartments of Internal Medicine and Biochemistry MUMC and CARIM School for Cardiovascular Diseases Maastricht The Netherlands.
Hugo Ten CateDepartments of Internal Medicine and Biochemistry MUMC and CARIM School for Cardiovascular Diseases Maastricht The Netherlands.
Henri M H SpronkDepartments of Internal Medicine and Biochemistry MUMC and CARIM School for Cardiovascular Diseases Maastricht The Netherlands.ORCID https://orcid.org/0000-0002-3858-334X
Lotte M C JacobsDepartment of Surgery Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.
Josephine KranendonkDepartment of Surgery Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.
Maaike van LeeuwenDepartment of Surgery Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.
Danielle MeijerDepartment of Laboratory Medicine Laboratory of Hematology Radboud University Medical Center Nijmegen The Netherlands.
Saskia MiddeldorpDepartment of Internal Medicine Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.ORCID https://orcid.org/0000-0002-1006-6420
Laszlo A GrohDepartment of Surgery Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.
Michiel C WarléDepartment of Surgery Radboud Institute of Health Sciences (RIHS) Radboud University Medical Center Nijmegen The Netherlands.
Radboud University Nijmegen · NLMaastricht University · NLJohannes Gutenberg University Mainz · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVaccination is the leading approach in combatting the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. ChAdOx1 nCoV-19 vaccination (ChAdOx1) has been linked to a higher frequency of rare thrombosis and thromboembolism. This study aimed to explore markers related to the blood coagulation system activation and inflammation, before and after ChAdOx1 vaccination. PATIENTS AND

methodsAn observational cohort study including 40 health care workers. Whole blood samples were collected before, and either 1 or 2 days after vaccination. Activated coagulation factors in complex with their natural inhibitors were determined by custom ELISAs, including thrombin:antithrombin (T:AT), kallikrein:C1-esterase-inhibitor (PKa:C1Inh), factor(F)IXa:AT, FXa:AT, FXIaAT, FXIa:alpha-1-antitrypsin (α1AT), FXIa:C1inh, and FVIIa:AT. Plasma concentrations of interleukin (IL)-6 and IL-18 were quantified via ELISA. Analyses were performed using Wilcoxon signed-rank test.

resultsLevels of FVIIa:AT decreased with a median (IQR) of 707 (549-1028) pg/ml versus 598 (471-996) pg/ml,

conclusionChAdOx1 leads to an inflammatory response with increased levels of IL-6. We did not observe activation of the blood coagulation system 1-2 days following vaccination.

Indexed as

blood coagulationCOVID‐19COVID‐19 vaccinesSARS‐CoV‐2thrombosisvaccination

Identifiers

PMID34934894
PMCPMC8652129
OpenAlexW4200055988

What OpenQuestion holds

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Registered trials

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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.