Evidence map›Paper›PMID 33275926›Full record

ArticleJournal of virological methods2021

Comparison of potency assays to assess SARS-CoV-2 neutralizing antibody capacity in COVID-19 convalescent plasma.

Christine von Rhein, Tatjana Scholz, Lisa Henss, Romy Kronstein-Wiedemann, Tatjana Schwarz, Roman N Rodionov, Victor M Corman, Torsten Tonn, Barbara S Schnierle

Open access · greenAbstract read
In one paragraph

Article in Journal of virological methods, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 1 pooled it
2.1field-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

64 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

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

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

9 authors at 4 institutions in 1 country.

Christine von RheinPaul-Ehrlich-Institut, Department of Virology, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany.
Tatjana ScholzPaul-Ehrlich-Institut, Department of Virology, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany.
Lisa HenssPaul-Ehrlich-Institut, Department of Virology, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany.
Romy Kronstein-WiedemannExperimentelle Transfusionsmedizin, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany.
Tatjana SchwarzInstitute of Virology, Charite - Universitätsmedizin Berlin, Campus Charite Mitte, Chariteplatz 1, 10117 Berlin, Germany; German Centre for Infection Research, Berlin, Germany.
Roman N RodionovDepartment of Medicine III, University Hospital Carl-Gustav, Dresden, Germany.
Victor M CormanInstitute of Virology, Charite - Universitätsmedizin Berlin, Campus Charite Mitte, Chariteplatz 1, 10117 Berlin, Germany; German Centre for Infection Research, Berlin, Germany.
Torsten TonnExperimentelle Transfusionsmedizin, Medical Faculty Carl Gustav Carus, TU Dresden and Institute for Transfusion Medicine Dresden, DRK Blutspendedienst Nord-Ost, Dresden, Germany.
Barbara S SchnierlePaul-Ehrlich-Institut, Department of Virology, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany. Electronic address: Barbara.schnierle@pei.de.
Paul Ehrlich Institut · DEGerman Center for Infection Research · DEUniversity Hospital Carl Gustav Carus · DETechnische Universität Dresden · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Convalescent plasma is plasma collected from individuals after resolution of an infection and the development of antibodies. Passive antibody administration by transfusion of convalescent plasma is currently in clinical evaluations to treat COVID-19 patients. The level of neutralizing antibodies vary among convalescent patients and fast and simple methods to identify suitable plasma donations are needed. We compared three methods to determine the SARS-CoV-2 neutralizing activity of human convalescent plasma: life virus neutralization by plaque reduction assay, a lentiviral vector based pseudotype neutralization assay and a competition ELISA-based surrogate virus neutralization assay (sVNT). Neutralization activity correlated among the different assays; however the sVNT assay was overvaluing the low neutralizing plasma. On the other hand, the sVNT assay required the lowest biosafety level, is fast and is sufficient to identify highly neutralizing plasma samples. Though weakly neutralizing samples were more reliable detected by the more challenging lentiviral vector based assays or virus neutralization assays. Spike receptor binding competition assays are suitable to identify highly neutralizing plasma samples under low biosafety requirements. Detailed analysis of in vitro neutralization activity requires more sophisticated methods that have to be performed under higher biosafety levels.

Indexed as

Antibodies, NeutralizingAntibodies, ViralCell LineCOVID-19COVID-19 Serological TestingHumansNeutralization TestsSARS-CoV-2Antibodies, NeutralizingAntibodies, ViralConvalescent plasmaNeutralizationPseudotypingSARS-CoV-2

Identifiers

PMID33275926
PMCPMC7707675
OpenAlexW3110499570

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.