Evidence map›Paper›PMID 35463461›Full record

ArticleGene reports2022

COVID-19 susceptibility, severity, clinical outcome and Toll-like receptor (7) mRNA expression driven by

Sally M El-Hefnawy, Hanaa A Eid, Rasha G Mostafa, Shaimaa S Soliman, Thoria A Omar, Rania M Azmy

Open access · greenAbstract read
In one paragraph

Article in Gene reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
3.0field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Frontiers in immunology · 2026
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  7. Review
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  11. Frontiers in immunology · 2024
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  12. Article
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  16. Article
  17. TLRs: Innate Immune Sentries against SARS-CoV-2 Infection.International journal of molecular sciences · 2023
    Review
  18. Article
  19. Article
  20. 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

6 authors at 1 institution in 1 country.

Sally M El-HefnawyMedical Biochemistry & Molecular Biology Department, Menoufia Faculty of Medicine, Egypt.
Hanaa A EidChest Diseases and Tuberculosis Department, Menoufia Faculty of Medicine, Egypt.
Rasha G MostafaMedical Microbiology and Immunology Department, Menoufia Faculty of Medicine, Egypt.
Shaimaa S SolimanPublic Health and Community Medicine, Menoufia Faculty of Medicine, Egypt.
Thoria A OmarClinical Pathology Department, Menoufia Faculty of Medicine, Egypt.
Rania M AzmyMedical Biochemistry & Molecular Biology Department, Menoufia Faculty of Medicine, Egypt.
Menoufia University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Toll-like receptors are implicated in the pathophysiology of the severe acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory disease (MERS), according to several studies. The whole-genome sequencing of SARS-CoV-2 revealed that the TLR7 gene could be implicated in the virus's pathogenesis since the virus includes ssRNA patterns that could bind to TLR7. Aim: The purpose of this study was to look into the function of the TLR7 (rs3853839) C/G polymorphism and the expression of TLR7 mRNA transcript in the development, severity and progression of COVID-19. Subjects and methods: A case-control study included 285 participants who were divided into two groups: 150 middle-aged people with COVID 19 who had no previous co-morbidities and 135 healthy volunteers who served as controls. TaqMan test was used to genotype the TLR7 (rs3853839) C/G polymorphism, and real-time PCR was used to determine the relative expression of its mRNA transcript. The level of IL-6 in serum was determined using the ELISA method as an indicator of cytokine storm and COVID-19 severity. Results: The GG genotype was shown to be much more common in COVID-19 patients (38.7%) than controls (4.4%), with an OR of 19.86 (95% CI: 7.85; 50.22) and was linked to disease severity and poor clinical outcomes (hospitalization, respiratory failure, cardiac complications, ICU admission and mechanical ventilation).As a result, the G allele was considerably higher in cases (57.0%), while the C allele was significantly higher in controls ( Conclusion: The GG form of the TLR7 SNP (rs3853839) could be a genetic risk factor for COVID-19 infection, severe illness and poor clinical outcome. TLR7 mRNA expression was also elevated in COVID-19 patients who were severely/critically unwell and had a bad outcome, suggesting that they could be used as COVID-19 prognostic biomarkers.

Indexed as

ARDS, Acute respiratory distress syndromeCBC, complete blood countCOVID-19CRP, C-reactive proteinIL-6MERS, Middle East respiratory disease, according to several studiesmRNAPCRRT-PCR, reverse transcriptase polymerase chain reactionSARS-CoV, Severe acute respiratory syndrome coronavirusSNPssRNA, single-strand RNATLR7TLR7, Toll Like Receptor 7WHO, World Health Organization

Identifiers

PMID35463461
PMCPMC9013694
OpenAlexW4223925711

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.