Evidence map›Paper›PMID 35765670›Full record

ArticleResearch and practice in thrombosis and haemostasis2022

Recombinant porcine factor VIII corrects thrombin generation in vitro in plasma from patients with congenital hemophilia A and inhibitors.

Claude Négrier, Johannes Oldenburg, Gili Kenet, Shannon L Meeks, Jean-Claude Bordet, Jens Müller, Sandra Le Quellec, Peter L Turecek, Nikola Tripkovic, Yesim Dargaud

Open access · goldAbstract read
In one paragraph

Article in Research and practice in thrombosis and haemostasis, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 40% 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

2 citing papers in PubMed, 2 citations in OpenAlex.

  1. Article
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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

10 authors at 5 institutions in 5 countries.

Claude NégrierUnite d'Hemostase Clinique Centre National de Reference de l'Hemophilie Hopital Louis Pradel Universite Lyon1 Lyon France.
Johannes OldenburgInstitute of Experimental Haematology and Transfusion Medicine University Clinic Bonn Bonn Germany.
Gili KenetNational Hemophilia Center Sheba Medical Center Tel Hashomer and The Amalia Biron Thrombosis Research Institute Tel Aviv University Tel Aviv Israel.
Shannon L MeeksAflac Cancer and Blood Disorders Center Emory University School of Medicine Children's Healthcare of Atlanta Atlanta Georgia USA.
Jean-Claude BordetUnite d'Hemostase Clinique Centre National de Reference de l'Hemophilie Hopital Louis Pradel Universite Lyon1 Lyon France.
Jens MüllerInstitute of Experimental Haematology and Transfusion Medicine University Clinic Bonn Bonn Germany.
Sandra Le QuellecUnite d'Hemostase Clinique Centre National de Reference de l'Hemophilie Hopital Louis Pradel Universite Lyon1 Lyon France.ORCID https://orcid.org/0000-0002-6203-3946
Peter L TurecekBaxalta Innovations GmbH, A Takeda Company Vienna Austria.ORCID https://orcid.org/0000-0002-6161-1556
Nikola TripkovicTakeda Pharmaceuticals International AG Zürich Switzerland.
Yesim DargaudUnite d'Hemostase Clinique Centre National de Reference de l'Hemophilie Hopital Louis Pradel Universite Lyon1 Lyon France.ORCID https://orcid.org/0000-0002-4888-1463
Université Claude Bernard Lyon 1 · FRBaxter (Austria) · ATEmory University · USTakeda (Switzerland) · CHTel Aviv University · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Neutralizing factor VIII (FVIII) antibodies are a major complication in hemophilia A. Antihemophilic factor VIII (recombinant), porcine sequence (rpFVIII; susoctocog alfa; Baxalta US Inc., a Takeda company) has low cross-reactivity to anti-human FVIII antibodies and can provide functional FVIII activity in the presence of FVIII inhibitors. Objectives: Evaluate in vitro thrombin generation and clot formation responses to rpFVIII in blood from patients with congenital hemophilia A. Methods: In this multicenter study, blood was obtained for in vitro analyses that included human and porcine FVIII inhibitors, low <5 Bethesda units (BU)/ml or high ≥5 BU/ml titer (Nijmegen-modified Bethesda assay); thrombin generation assay (TGA), clot viscoelasticity (thromboelastography), fibrin clot structure analysis (scanning electron microscopy), and epitope mapping. Results: Blood samples were from 20 patients with congenital hemophilia A (FVIII activity <1%, mean [range] inhibitor titers: anti-human FVIII, 14 [1-427] BU/ml [ Conclusions: Recombinant porcine factor VIII demonstrated a dose-dependent correction of thrombin generation and clot formation in vitro, dependent on the anti-porcine FVIII inhibitor titer. Procoagulant responses to rpFVIII occurred in plasma containing FVIII inhibitors.

Indexed as

factor VIII inhibitorhemophilia Aporcine factor VIIIrecombinantthrombin

Identifiers

PMID35765670
PMCPMC9207117
OpenAlexW4283169543

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.