Evidence map›Paper›PMID 24152306›Full record

ArticleJournal of thrombosis and haemostasis : JTH2013

Epitope mapping of inhibitory antibodies targeting the C2 domain of coagulation factor VIII by hydrogen-deuterium exchange mass spectrometry.

A M Sevy, J F Healey, W Deng, P C Spiegel, S L Meeks, R Li

Open access · greenAbstract read
In one paragraph

Article in Journal of thrombosis and haemostasis : JTH, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 42 citations in OpenAlex.

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  9. Structural basis for nonneutralizing antibody competition at antigenic site II of the respiratory syncytial virus fusion protein.Proceedings of the National Academy of Sciences of the United States of America · 2016
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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

6 authors at 3 institutions in 1 country.

A M SevyAflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA.
J F Healey
W Deng
P C Spiegel
S L Meeks
R Li
Emory University · USChildren's Healthcare of Atlanta · USWestern Washington University · US

Funding

NEUROIMAGING COREP30HD040677 · NICHD · CHILDREN'S RESEARCH INSTITUTE · PI VITTORIO GALLO, VITTORIO GALLO VITTORIO GALLO · 2001 to 2015
$15.9M
Translational Research SkillsU54HL112309 · NHLBI · EMORY UNIVERSITY · PI LOLLAR, JOHN S. · 2012 to 2016
$12.1M
NCMRR-DC Core Molecular & Functional Outcome Measures in Rehabilitation MedicineR24HD050846 · NICHD · CHILDREN'S RESEARCH INSTITUTE · PI KNOBLACH, SUSAN M · 2005 to 2014
$8.6M
CTSA INFRASTRUCTURE FOR PEDIATRIC RESEARCHUL1RR031988 · NCRR · CHILDREN'S RESEARCH INSTITUTE · PI JOSEPH, JILL G · 2010 to 2011
$8.2M
NCRR NIH HHS UL1 RR031988NCRR NIH HHS UL1RR031988NHLBI NIH HHS U54 HL112309NICHD NIH HHS 2R24HD050846-06NICHD NIH HHS 5P30HD040677-10NICHD NIH HHS P30 HD040677NICHD NIH HHS R24 HD050846
6 · The paper itself

Abstract

backgroundThe development of anti-factor VIII antibodies (inhibitors) is a significant complication in the management of patients with hemophilia A, leading to significant increases in morbidity and treatment cost. Using a panel of mAbs against different epitopes on FVIII, we have recently shown that epitope specificity, inhibitor kinetics and time to maximum inhibition are more important than inhibitor titer in predicting responses to FVIII and the combination of FVIII and recombinant FVIIa. In particular, a subset of high-titer inhibitors responded to high-dose FVIII, which would not be predicted on the basis of their inhibitor titer alone. Thus, the ability to quickly map the epitope spectrum of patient plasma with a clinically feasible assay may fundamentally change how clinicians approach the treatment of high-titer inhibitor patients.

objectivesTo map the epitopes of anti-FVIII mAbs, three of which are classic inhibitors and one of which is a non-classic inhibitor, by the use of hydrogen-deuterium exchange coupled with mass spectrometry (HDX-MS).

methodsThe binding epitopes of four mAbs targeting the FVIII C2 domain were mapped with HDX-MS.

resultsThe epitopes determined with HDX-MS are consistent with those obtained earlier through structural characterization and antibody competition assays. In addition, classic and non-classic inhibitor epitopes could be distinguished by the use of a limited subset of C2 domain-derived peptic fragments.

conclusionOur results demonstrate the effectiveness and robustness of the HDX-MS method for epitope mapping, and suggest a potential role of rapid mapping of FVIII inhibitor epitopes in facilitating individualized treatment of inhibitor patients.

Indexed as

Epitope MappingAntibodies, MonoclonalChromatography, High Pressure LiquidDeuteriumFactor VIIIHumansHydrogenMass SpectrometryRecombinant ProteinsAntibodies, MonoclonalDeuteriumFactor VIIIHydrogenRecombinant Proteinsantigen-antibody complexepitope mappingfactor VIIIhemophilia Ahydrogen deuterium exchange measurement

Identifiers

PMID24152306
PMCPMC3947443
OpenAlexW2047066205

What OpenQuestion holds

Textmetadata
LicenceTDM
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.