Evidence map›Paper›PMID 31243126›Full record

ArticleJournal of virology2019

Dynamics of the Humoral Immune Response to a Prime-Boost Ebola Vaccine: Quantification and Sources of Variation.

Chloé Pasin, Irene Balelli, Thierry Van Effelterre, Viki Bockstal, Laura Solforosi, Mélanie Prague, Macaya Douoguih, Rodolphe Thiébaut

Open access · hybridAbstract read
In one paragraph

Article in Journal of virology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

23 citing papers in PubMed, 42 citations in OpenAlex.

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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

8 authors at 5 institutions in 3 countries.

Chloé PasinINSERM U1219, University of Bordeaux, Bordeaux, France.
Irene BalelliINSERM U1219, University of Bordeaux, Bordeaux, France.
Thierry Van EffelterreJanssen Pharmaceutica N. V., Beerse, Belgium.
Viki BockstalJanssen Vaccines & Prevention B. V., Leiden, The Netherlands.
Laura SolforosiJanssen Vaccines & Prevention B. V., Leiden, The Netherlands.
Mélanie PragueINSERM U1219, University of Bordeaux, Bordeaux, France.
Macaya DouoguihJanssen Vaccines & Prevention B. V., Leiden, The Netherlands.
Rodolphe ThiébautINSERM U1219, University of Bordeaux, Bordeaux, France rodolphe.thiebaut@u-bordeaux.fr.
Janssen (Netherlands) · NLInserm · FRInstitut de Recherche Vaccinale · FRJanssen (Belgium) · BEUniversité de Bordeaux · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Ebola vaccine based on Ad26.ZEBOV/MVA-BN-Filo prime-boost regimens is being evaluated in multiple clinical trials. The long-term immune response to the vaccine is unknown, including factors associated with the response and variability around the response. We analyzed data from three phase 1 trials performed by the EBOVAC1 Consortium in four countries: the United Kingdom, Kenya, Tanzania, and Uganda. Participants were randomized into four groups based on the interval between prime and boost immunizations (28 or 56 days) and the sequence in which Ad26.ZEBOV and MVA-BN-Filo were administered. Consecutive enzyme-linked immunosorbent assay (ELISA) measurements of the IgG binding antibody concentrations against the Kikwit glycoprotein (GP) were available for 177 participants to assess the humoral immune response up to 1 year postprime. Using a mathematical model for the dynamics of the humoral response, from 7 days after the boost immunization up to 1 year after the prime immunization, we estimated the durability of the antibody response and the influence of different factors on the dynamics of the humoral response. Ordinary differential equations (ODEs) described the dynamics of antibody response and two populations of antibody-secreting cells (ASCs), short-lived (SL) and long-lived (LL). Parameters of the ODEs were estimated using a population approach. We estimated that half of the LL ASCs could persist for at least 5 years. The vaccine regimen significantly affected the SL ASCs and the antibody peak but not the long-term response. The LL ASC compartment dynamics differed significantly by geographic regions analyzed, with a higher long-term antibody persistence in European subjects. These differences could not be explained by the observed differences in cellular immune response.

Indexed as

Antibodies, ViralAntibody FormationClinical Trials, Phase I as TopicEbola VaccinesEbolavirusEnzyme-Linked Immunosorbent AssayFemaleHemorrhagic Fever, EbolaHumansImmunity, CellularImmunity, HumoralImmunization, SecondaryKenyaMaleModels, TheoreticalTanzaniaAntibodies, ViralEbola Vaccinesantibody responseEbolamechanistic modelingvaccine

Identifiers

PMID31243126
PMCPMC6714808
OpenAlexW2949515262

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.