Evidence map›Paper›PMID 33227340›Full record

ArticleJournal of virological methods2021

Evaluating SARS-CoV-2 spike and nucleocapsid proteins as targets for antibody detection in severe and mild COVID-19 cases using a Luminex bead-based assay.

Joachim Mariën, Ann Ceulemans, Johan Michiels, Leo Heyndrickx, Karen Kerkhof, Nikki Foque, Marc-Alain Widdowson, Laure Mortgat, Els Duysburgh, Isabelle Desombere and 3 more

Open access · hybridAbstract 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 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed
2.8field-weighted citation impact, top 6% 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

68 citing papers in PubMed, 126 citations in OpenAlex.

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8 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

13 authors at 4 institutions in 1 country.

Joachim MariënOutbreak Research Team, Institute of Tropical Medicine, Antwerp, Belgium. Electronic address: joachim_marien@hotmail.com.
Ann CeulemansVirology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Johan MichielsVirology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Leo HeyndrickxVirology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Karen KerkhofVirology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Nikki FoqueDepartment of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Marc-Alain WiddowsonOutbreak Research Team, Institute of Tropical Medicine, Antwerp, Belgium.
Laure MortgatEpidemiology and Public Health, Sciensano, Brussels, Belgium.
Els DuysburghEpidemiology and Public Health, Sciensano, Brussels, Belgium.
Isabelle DesombereImmune Response, Sciensano, Brussels, Belgium.
Hilde JansensUniversity Hospital Antwerp, Antwerp, Belgium.
Marjan Van EsbroeckDepartment of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Kevin K AriënVirology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium. Electronic address: KArien@itg.be.
Instituut voor Tropische Geneeskunde · BESciensano (Belgium) · BEAntwerp University Hospital · BEUniversity of Antwerp · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Large-scale serosurveillance of severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) will only be possible if serological tests are sufficiently reliable, rapid and affordable. Many assays are either labour-intensive and require specialised facilities (e.g. virus neutralization assays), or are expensive with suboptimal specificity (e.g. commercial ELISAs and RDTs). Bead-based assays offer a cost-effective alternative and allow for multiplexing to test for antibodies against multiple antigens and against other pathogens. Here, we compare the performance of spike (S) and nucleocapsid (NP) antigens for the detection of SARS-CoV-2 specific IgG, IgM and IgA antibodies in a panel of sera that includes recent (up to six weeks after symptom onset, severe n = 44; and mild cases n = 52) and old infections (five months after symptom onset, mild n = 104), using a Luminex-bead based assay and comparison to a virus neutralization test. While we show that neutralizing antibody levels are significantly lower in mild than in severe cases, we demonstrate that a combination of the recombinant nucleocapsid protein (NP) and receptor-binding domain (RBD) results in highly specific (99 %) IgG antibody detection five months after infection in 96 % of cases. Although most severe Covid-19 cases developed a clear IgM and IgA response, titers fell below the detection threshold in more than 20 % of mild cases in our bead-based assay. In conclusion, our data supports the use of RBD and NP for the development of SARS-CoV-2 serological IgG bead-based assays.

Indexed as

ImmunoassayAntibodies, NeutralizingAntibodies, ViralCOVID-19HumansImmunoglobulin AImmunoglobulin GImmunoglobulin MNeutralization TestsNucleocapsid ProteinsROC CurveSARS-CoV-2Spike Glycoprotein, CoronavirusAntibodies, NeutralizingAntibodies, ViralImmunoglobulin AImmunoglobulin GImmunoglobulin MNucleocapsid ProteinsSpike Glycoprotein, CoronavirusBead-based assayLuminex antibody testSars-CoV-2SerosurveillanceVirus neutralization test

Identifiers

PMID33227340
PMCPMC7678438
OpenAlexW3103352259

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.