Evidence map›Paper›PMID 33529335›Full record

ArticleBlood2021

Structure of blood coagulation factor VIII in complex with an anti-C1 domain pathogenic antibody inhibitor.

Joseph S Gish, Lexi Jarvis, Kenneth C Childers, Shaun C Peters, Connor S Garrels, Ian W Smith, H Trent Spencer, Christopher B Doering, Pete Lollar, P Clint Spiegel

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

19 citing papers in PubMed, 21 citations in OpenAlex.

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  10. The Prothrombin-Prothrombinase Interaction.Sub-cellular biochemistry · 2024
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  14. Cryo-EM structures of coagulation factors.Research and practice in thrombosis and haemostasis · 2022
    Review
  15. Article
  16. Article
  17. Illustrated State-of-the-Art Capsules of the ISTH 2020 Congress.Research and practice in thrombosis and haemostasis · 2021
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Joseph S GishDepartment of Chemistry, Western Washington University, Bellingham, WA; and.
Lexi JarvisDepartment of Chemistry, Western Washington University, Bellingham, WA; and.
Kenneth C ChildersDepartment of Chemistry, Western Washington University, Bellingham, WA; and.ORCID 0000-0003-0472-7859
Shaun C PetersDepartment of Chemistry, Western Washington University, Bellingham, WA; and.
Connor S GarrelsDepartment of Chemistry, Western Washington University, Bellingham, WA; and.
Ian W SmithDepartment of Chemistry, Western Washington University, Bellingham, WA; and.
H Trent SpencerAflac Cancer and Blood Disorders Center, Department of Pediatrics, Emory University, Atlanta, GA.
Christopher B DoeringAflac Cancer and Blood Disorders Center, Department of Pediatrics, Emory University, Atlanta, GA.
Pete LollarAflac Cancer and Blood Disorders Center, Department of Pediatrics, Emory University, Atlanta, GA.ORCID 0000-0002-1206-8104
P Clint SpiegelDepartment of Chemistry, Western Washington University, Bellingham, WA; and.ORCID 0000-0001-7982-5424
Western Washington University · USEmory University · US

Funding

User Training and OutreachP30GM124169 · NIGMS · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI Gregory L Hura · 2017 to 2026
$28.6M
Translational Research SkillsU54HL112309 · NHLBI · EMORY UNIVERSITY · PI LOLLAR, JOHN S. · 2012 to 2016
$12.1M
Unraveling the immune response to factor VIIIU54HL141981 · NHLBI · EMORY UNIVERSITY · PI MEEKS, SHANNON L. · 2018 to 2022
$8.1M
Clinical Testing of the First Suspension BHK-M Cell Platform Derived BiotherapeuticR44HL110448 · NHLBI · EXPRESSION THERAPEUTICS · PI DENNING, GABRIELA, DOERING, CHRISTOPHER BRADLEY · 2018 to 2019
$1.5M
Bioengineered Recombinant FVIIIR44HL117511 · NHLBI · EXPRESSION THERAPEUTICS · PI DENNING, GABRIELA, DOERING, CHRISTOPHER BRADLEY · 2014 to 2015
$1.5M
Structural and Biochemical Studies of Blood Coagulation Factor VIII to Overcome the Immune ResponseR15HL135658 · NHLBI · WESTERN WASHINGTON UNIVERSITY · PI SPIEGEL, PAUL CLINTON · 2017 to 2024
$1.2M
Pilatus 6mS10OD021832 · OD · UNIVERSITY OF CALIFORNIA BERKELEY · PI ADAMS, PAUL DAVID · 2016 to 2016
$980k
Structure and Stability Studies of Factor VIII to Overcome the Immune ResponseR15HL103518 · NHLBI · WESTERN WASHINGTON UNIVERSITY · PI SPIEGEL, PAUL CLINTON · 2010 to 2010
$389k
NHLBI NIH HHS R15 HL103518NHLBI NIH HHS R15 HL135658NHLBI NIH HHS R44 HL110448NHLBI NIH HHS R44 HL117511NHLBI NIH HHS U54 HL112309NHLBI NIH HHS U54 HL141981NIGMS NIH HHS P30 GM124169NIH HHS S10 OD021832
6 · The paper itself

Abstract

Antibody inhibitor development in hemophilia A represents the most significant complication resulting from factor VIII (fVIII) replacement therapy. Recent studies have demonstrated that epitopes present in the C1 domain contribute to a pathogenic inhibitor response. In this study, we report the structure of a group A anti-C1 domain inhibitor, termed 2A9, in complex with a B domain-deleted, bioengineered fVIII construct (ET3i). The 2A9 epitope forms direct contacts to the C1 domain at 3 different surface loops consisting of Lys2065-Trp2070, Arg2150-Tyr2156, and Lys2110-Trp2112. Additional contacts are observed between 2A9 and the A3 domain, including the Phe1743-Tyr1748 loop and the N-linked glycosylation at Asn1810. Most of the C1 domain loops in the 2A9 epitope also represent a putative interface between fVIII and von Willebrand factor. Lastly, the C2 domain in the ET3i:2A9 complex adopts a large, novel conformational change, translocating outward from the structure of fVIII by 20 Å. This study reports the first structure of an anti-C1 domain antibody inhibitor and the first fVIII:inhibitor complex with a therapeutically active fVIII construct. Further structural understanding of fVIII immunogenicity may result in the development of more effective and safe fVIII replacement therapies.

Indexed as

AnimalsAntibodies, MonoclonalAntigen-Antibody ComplexCrystallography, X-RayEpitopesFactor VIIIHemophilia AHumansImmunoglobulin Fab FragmentsMiceModels, MolecularProtein ConformationProtein DomainsRecombinant Fusion ProteinsSwineAntibodies, MonoclonalAntigen-Antibody ComplexEpitopesF8 protein, humanFactor VIIIImmunoglobulin Fab FragmentsRecombinant Fusion Proteins

Identifiers

PMID33529335
PMCPMC8160500
OpenAlexW3127082669

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.