Evidence map›Paper›PMID 37510324›Full record

ArticleGenes2023

Apolipoprotein E (ApoE) ε4 Genotype (ApoE rs429358-ApoE rs7412 Polymorphisms) Is Not Associated with Long COVID Symptoms in Previously Hospitalized COVID-19 Survivors.

César Fernández-de-Las-Peñas, Lars Arendt-Nielsen, Gema Díaz-Gil, Francisco Gómez-Esquer, Antonio Gil-Crujera, Stella M Gómez-Sánchez, Silvia Ambite-Quesada, María A Palomar-Gallego, Oscar J Pellicer-Valero, Rocco Giordano

Open access · goldAbstract read
In one paragraph

Article in Genes, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. ApoE4 Homozygosity Is Associated With Increased Microglia Activation in Fatal COVID-19.Neuropathology : official journal of the Japanese Society of Neuropathology · 2025
    Article
  3. Habitual caffeine intake, genetics and cognitive performance.Journal of psychopharmacology (Oxford, England) · 2025
    Article
  4. Review
  5. Article
  6. 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

10 authors at 4 institutions in 2 countries.

César Fernández-de-Las-PeñasDepartment of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, 28922 Alcorcón, Spain.ORCID 0000-0003-3772-9690
Lars Arendt-NielsenCenter for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, DK-9220 Aalborg, Denmark.
Gema Díaz-GilResearch Group GAMDES, Department of Basic Health Sciences, Universidad Rey Juan Carlos (URJC), 28922 Madrid, Spain.
Francisco Gómez-EsquerResearch Group GAMDES, Department of Basic Health Sciences, Universidad Rey Juan Carlos (URJC), 28922 Madrid, Spain.ORCID 0000-0002-5426-4349
Antonio Gil-CrujeraResearch Group GAMDES, Department of Basic Health Sciences, Universidad Rey Juan Carlos (URJC), 28922 Madrid, Spain.ORCID 0000-0002-1022-5831
Stella M Gómez-SánchezResearch Group GAMDES, Department of Basic Health Sciences, Universidad Rey Juan Carlos (URJC), 28922 Madrid, Spain.ORCID 0000-0002-7140-4286
Silvia Ambite-QuesadaDepartment of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, 28922 Alcorcón, Spain.ORCID 0000-0001-6755-8189
María A Palomar-GallegoResearch Group GAMDES, Department of Basic Health Sciences, Universidad Rey Juan Carlos (URJC), 28922 Madrid, Spain.ORCID 0000-0002-4018-2270
Oscar J Pellicer-ValeroImage Processing Laboratory (IPL), Universitat de València, Parc Científic, Paterna, 46100 València, Spain.ORCID 0000-0002-0104-1029
Rocco GiordanoCenter for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, DK-9220 Aalborg, Denmark.ORCID 0000-0003-1331-129X
Universidad Rey Juan Carlos · ESAalborg University · DKAalborg University Hospital · DKParc Científic de la Universitat de València · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The role of genetics as a predisposing factor related to an increased risk of developing long COVID symptomatology is under debate. The aim of the current secondary analysis was to identify the association between the Apolipoprotein E (ApoE) gene, a gene affecting cholesterol metabolism and previously associated with a higher risk of SARS-CoV-2 infection and COVID-19 severity, and the development of long COVID in a cohort of individuals who had been hospitalized by SARS-CoV-2 infection. Unstimulated whole saliva samples were collected from 287 previously hospitalized COVID-19 survivors. Three genotypes of the ApoE gene (ApoE ε2, ε3, ε4) were obtained based on the combination of ApoE rs429358 and ApoE rs7412 polymorphisms. Participants were asked to self-report the presence of any post-COVID symptom in a face-to-face interview at 17.8 ± 5.2 months after hospital discharge and medical records were obtained. Each participant reported 3.0 (1.9) post-COVID symptoms. Overall, no significant differences in long COVID symptoms were observed depending on the ApoE genotype (ApoE ε2, ApoE ε3, ApoE ε4). The presence of the ApoE ε4 genotype, albeit associated with a higher risk of SARS-CoV-2 infection and COVID-19 severity, did not appear to predispose for the presence of long COVID in our cohort of previously hospitalized COVID-19 survivors.

Indexed as

Apolipoproteins ECOVID-19Post-Acute COVID-19 SyndromeApolipoprotein E2Apolipoprotein E4GenotypeHumansSARS-CoV-2Apolipoprotein E2Apolipoprotein E4Apolipoproteins EApoEgenotypelong COVIDsingle nucleotide polymorphism

Identifiers

PMID37510324
PMCPMC10379077
OpenAlexW4383955485

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.