Evidence map›Paper›PMID 34270631›Full record

ArticlePLoS pathogens2021

SARS-CoV-2-specific circulating T follicular helper cells correlate with neutralizing antibodies and increase during early convalescence.

Sushma Boppana, Kai Qin, Jacob K Files, Ronnie M Russell, Regina Stoltz, Frederic Bibollet-Ruche, Anju Bansal, Nathan Erdmann, Beatrice H Hahn, Paul A Goepfert

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 3% 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

61 citing papers in PubMed, 1 synthesis or guideline pooled it, 84 citations in OpenAlex.

  1. COVID-19 pandemic: the delta variant, T-cell responses, and the efficacy of developing vaccines.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2022
    Pooled it
  2. Article
  3. Review
  4. Article
  5. Human T Cell Responses to Flavivirus Vaccines.European journal of immunology · 2025
    Review
  6. Article
  7. Article
  8. Review
  9. Atypical and non-classical CD45RBNature communications · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. The immune response to SARS-CoV-2 in people with HIV.Cellular & molecular immunology · 2024
    Review
  16. Article
  17. Review
  18. Article
  19. Observational
  20. Article

1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Sushma BoppanaDivision of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.ORCID 0000-0003-1525-0523
Kai QinDivision of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.
Jacob K FilesDivision of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.
Ronnie M RussellDepartment of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.
Regina StoltzDepartment of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.
Frederic Bibollet-RucheDepartment of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.
Anju BansalDivision of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.ORCID 0000-0002-8142-0386
Nathan ErdmannDivision of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.
Beatrice H HahnDepartment of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.ORCID 0000-0002-9400-9887
Paul A GoepfertDivision of Infectious Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.
University of Alabama at Birmingham · USUniversity of Pennsylvania · US

Funding

Impact of cross-reactive CD8 T cells on HIV-1 viral control and evolutionF30AI140829 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI BOPPANA, SUSHMA · 2018 to 2022
$169k
Impact of HLA-II Adaptation on CD4 T-cell and Tfh responses in HIV-1 VaccinationF30AI155295 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI FILES, JACOB · 2021 to 2023
$124k
NIAID NIH HHS F30 AI140829NIAID NIH HHS F30 AI155295
6 · The paper itself

Abstract

T-cell immunity is likely to play a role in protection against SARS-CoV-2 by helping generate neutralizing antibodies. We longitudinally studied CD4 T-cell responses to the M, N, and S structural proteins of SARS-CoV-2 in 26 convalescent individuals. Within the first two months following symptom onset, a majority of individuals (81%) mounted at least one CD4 T-cell response, and 48% of individuals mounted detectable SARS-CoV-2-specific circulating T follicular helper cells (cTfh, defined as CXCR5+PD1+ CD4 T cells). SARS-CoV-2-specific cTfh responses across all three protein specificities correlated with antibody neutralization with the strongest correlation observed for S protein-specific responses. When examined over time, cTfh responses, particularly to the M protein, increased in convalescence, and robust cTfh responses with magnitudes greater than 5% were detected at the second convalescent visit, a median of 38 days post-symptom onset. CD4 T-cell responses declined but persisted at low magnitudes three months and six months after symptom onset. These data deepen our understanding of antigen-specific cTfh responses in SARS-CoV-2 infection, suggesting that in addition to S protein, M and N protein-specific cTfh may also assist in the development of neutralizing antibodies and that cTfh response formation may be delayed in SARS-CoV-2 infection.

Indexed as

AdultAgedAntibodies, NeutralizingAntibodies, ViralAntibody SpecificityCase-Control StudiesCoronavirus M ProteinsCoronavirus Nucleocapsid ProteinsCOVID-19FemaleHost Microbial InteractionsHumansLongitudinal StudiesMaleMiddle AgedPandemicsAntibodies, NeutralizingAntibodies, ViralCoronavirus M ProteinsCoronavirus Nucleocapsid Proteinsmembrane protein, SARS-CoV-2nucleocapsid phosphoprotein, SARS-CoV-2PhosphoproteinsSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2Viral Matrix Proteins

Identifiers

PMID34270631
PMCPMC8318272
OpenAlexW3178981008

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.