Evidence map›Paper›PMID 33569592›Full record

ArticleBlood2021

Molecular determinants of the factor VIII/von Willebrand factor complex revealed by BIVV001 cryo-electron microscopy.

James R Fuller, Kevin E Knockenhauer, Nina C Leksa, Robert T Peters, Joseph D Batchelor

Open access · bronzeAbstract readVideo-Audio Media
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 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
5.3field-weighted citation impact, top 4% 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

27 citing papers in PubMed, 44 citations in OpenAlex.

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  14. How Electricity Prevents Us from Bleeding to Death.Reviews of physiology, biochemistry and pharmacology · 2025
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  17. The Prothrombin-Prothrombinase Interaction.Sub-cellular biochemistry · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

James R FullerIntegrated Drug Discovery, Sanofi, Waltham, MA.ORCID 0000-0002-9029-0923
Kevin E KnockenhauerRare Blood Disorders, Sanofi, Waltham, MA.
Nina C LeksaRare Blood Disorders, Sanofi, Waltham, MA.ORCID 0000-0003-0331-4323
Robert T PetersRare Blood Disorders, Sanofi, Waltham, MA.ORCID 0000-0002-1442-3907
Joseph D BatchelorIntegrated Drug Discovery, Sanofi, Waltham, MA.ORCID 0000-0002-9701-9255
Sanofi (United States) · USUniversity of Chicago · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Interaction of factor VIII (FVIII) with von Willebrand factor (VWF) is mediated by the VWF D'D3 domains and thrombin-mediated release is essential for hemostasis after vascular injury. VWF-D'D3 mutations resulting in loss of FVIII binding are the underlying cause of von Willebrand disease (VWD) type 2N. Furthermore, the FVIII-VWF interaction has significant implications for the development of therapeutics for bleeding disorders, particularly hemophilia A, in which endogenous VWF clearance imposes a half-life ceiling on replacement FVIII therapy. To understand the structural basis of FVIII engagement by VWF, we solved the structure of BIVV001 by cryo-electron microscopy to 2.9 Å resolution. BIVV001 is a bioengineered clinical-stage FVIII molecule for the treatment of hemophilia A. In BIVV001, VWF-D'D3 is covalently linked to an Fc domain of a B domain-deleted recombinant FVIII (rFVIII) Fc fusion protein, resulting in a stabilized rFVIII/VWF-D'D3 complex. Our rFVIII/VWF structure resolves BIVV001 architecture and provides a detailed spatial understanding of previous biochemical and clinical observations related to FVIII-VWF engagement. Notably, the FVIII acidic a3 peptide region (FVIII-a3), established as a critical determinant of FVIII/VWF complex formation, inserts into a basic groove formed at the VWF-D'/rFVIII interface. Our structure shows direct interaction of sulfated Y1680 in FVIII-a3 and VWF-R816 that, when mutated, leads to severe hemophilia A or VWD type 2N, respectively. These results provide insight on this key coagulation complex, explain the structural basis of many hemophilia A and VWD type 2N mutations, and inform studies to further elucidate how VWF dissociates rapidly from FVIII upon activation.

Indexed as

Cryoelectron MicroscopyDrug CombinationsFactor VIIIHumansModels, MolecularProtein ConformationProtein DomainsProtein Interaction MappingRecombinant Fusion Proteinsvon Willebrand FactorBIVV001Drug CombinationsFactor VIIIfactor VIII, von Willebrand factor drug combinationRecombinant Fusion Proteinsvon Willebrand Factor

Identifiers

PMID33569592
PMCPMC8191861
OpenAlexW3128422450

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.