Evidence map›Paper›PMID 33254525›Full record

ArticleMedical hypotheses2020

Vitamin K epoxide reductase complex subunit 1 (VKORC1) gene polymorphism as determinant of differences in Covid-19-related disease severity.

Rob Janssen, Jona Walk

Open access · greenAbstract read
In one paragraph

Article in Medical hypotheses, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Article
  6. Dysregulation of Protein S in COVID-19.Best practice & research. Clinical haematology · 2022
    Review
  7. Article
  8. The Role of Vitamin K in CKD-MBD.Current osteoporosis reports · 2022
    Review
  9. Synthetic lethality-based prediction of anti-SARS-CoV-2 targets.bioRxiv : the preprint server for biology · 2021
    Article
  10. Review
  11. Review
  12. Review
  13. Exploring the Genetic Conception of Obesity via the Dual Role of FoxO.International journal of molecular sciences · 2021
    Review
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

2 authors at 1 institution in 1 country.

Rob JanssenDepartment of Pulmonary Medicine, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands. Electronic address: rob.janssen@cwz.nl.
Jona WalkDepartment of Internal Medicine, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands.
Canisius-Wilhelmina Ziekenhuis · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Covid-19, caused by SARS-CoV-2, has major world-wide health-related and socio-economic consequences. There are large disparities in the burden of Covid-19 with an apparent lower risk of poor outcomes in East Asians compared to populations in the West. A recent study suggested that Covid-19 leads to a severe extrahepatic vitamin K insufficiency, which could lead to impaired activation of extrahepatic proteins like endothelial anticoagulant protein S in the presence of normal hepatic procoagulant activity. This would be compatible with the enhanced thrombogenicity in severe Covid-19. The same study showed that vitamin K antagonists (VKA) that inhibit vitamin K recycling, had a greater impact on procoagulant activity than on the activation of extrahepatic vitamin K-dependent proteins during SARS-CoV-2 infections. A genetic polymorphism in the vitamin K epoxide reductase complex 1, VKORC1 -1639A, is particularly prevalent in East Asia and associates with low vitamin K recycling rates. Carriage of the allele may be regarded as bioequivalent to low-dose VKA use. We speculate that VKORC1 -1639A confers protection against thrombotic complications of Covid-19 and that differences in its allele frequency are partially responsible for the differences in Covid-19 severity between East and West.

Indexed as

AmericasAsia, EasternCOVID-19EuropeGene FrequencyHumansModels, BiologicalPandemicsPolymorphism, Single NucleotideSARS-CoV-2Severity of Illness IndexThrombosisVitamin KVitamin K DeficiencyVitamin K Epoxide ReductasesVitamin KVitamin K Epoxide ReductasesVKORC1 protein, human

Identifiers

PMID33254525
PMCPMC7446614
OpenAlexW3080860923

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.