Evidence map›Paper›PMID 36217434›Full record

ArticleMolecular therapy. Methods & clinical development2022

A third dose of the unmodified COVID-19 mRNA vaccine CVnCoV enhances quality and quantity of immune responses.

Klara Lenart, Fredrika Hellgren, Sebastian Ols, Xianglei Yan, Alberto Cagigi, Rodrigo Arcoverde Cerveira, Inga Winge, Jakub Hanczak, Stefan O Mueller, Edith Jasny and 4 more

Open access · goldAbstract read
In one paragraph

Article in Molecular therapy. Methods & clinical development, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.1field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 43 citations in OpenAlex.

  1. iScience · 2026
    Article
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  6. Review
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  8. AnScience immunology · 2025
    Article
  9. Article
  10. Visualizing lipid nanoparticle trafficking for mRNA vaccine delivery in non-human primates.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  11. Article
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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

14 authors at 3 institutions in 2 countries.

Klara LenartDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Fredrika HellgrenDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Sebastian OlsDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Xianglei YanDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Alberto CagigiDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Rodrigo Arcoverde CerveiraDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Inga WingeDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Jakub HanczakDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Stefan O MuellerCureVac AG, Tübingen, Germany.
Edith JasnyCureVac AG, Tübingen, Germany.
Kim SchwendtCureVac AG, Tübingen, Germany.
Susanne RauchCureVac AG, Tübingen, Germany.
Benjamin PetschCureVac AG, Tübingen, Germany.
Karin LoréDepartment of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Karolinska Institutet · SECureVac (Germany) · DEKarolinska University Hospital · SE

Funding

Bill & Melinda Gates Foundation INV-017217
6 · The paper itself

Abstract

A third vaccine dose is often required to achieve potent, long-lasting immune responses. We investigated the effect of three 8-μg doses of CVnCoV, CureVac's severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine candidate containing sequence-optimized unmodified mRNA encoding the spike (S) glycoprotein, administered at 0, 4, and 28 weeks, on immune responses in rhesus macaques. After the third dose, S-specific binding and neutralizing antibodies increased 50-fold compared with post-dose 2 levels, with increased responses also evident in the lower airways and against the SARS-CoV-2 B.1.1.7 (Alpha), B.1.351 (Beta), P.1 (Gamma), and B.1.617.2 (Delta) variants. Enhanced binding affinity of serum antibodies after the third dose correlated with higher somatic hypermutation in S-specific B cells, corresponding with improved binding properties of monoclonal antibodies expressed from isolated B cells. Administration of low-dose mRNA led to fewer cells expressing antigen

Indexed as

affinity maturationantibody responseCOVID-19innate immunitymRNA vaccineSARS-CoV-2vaccinevaccine biodistribution

Identifiers

PMID36217434
PMCPMC9535876
OpenAlexW4302363719

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.