Evidence map›Paper›PMID 22020385›Full record

ArticleNature biotechnology2011

A zymogen-like factor Xa variant corrects the coagulation defect in hemophilia.

Lacramioara Ivanciu, Raffaella Toso, Paris Margaritis, Giulia Pavani, Haein Kim, Alexander Schlachterman, Jian-Hua Liu, Valerie Clerin, Debra D Pittman, Rosalind Rose-Miranda and 5 more

Abstract read
In one paragraph

Article in Nature biotechnology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

39 citing papers in PubMed, 71 citations in OpenAlex.

  1. Article
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  7. Article
  8. Review
  9. Article
  10. Article
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  13. Article
  14. Article
  15. Protein-Engineered Coagulation Factors for Hemophilia Gene Therapy.Molecular therapy. Methods & clinical development · 2019
    Review
  16. Article
  17. Novel alternate hemostatic agents for patients with inhibitors: beyond bypass therapy.Hematology. American Society of Hematology. Education Program · 2017
    Review
  18. Review
  19. Article
  20. Article
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

15 authors at 3 institutions in 1 country.

Lacramioara IvanciuDepartment of Pediatrics, Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
Raffaella Toso
Paris Margaritis
Giulia Pavani
Haein Kim
Alexander Schlachterman
Jian-Hua Liu
Valerie Clerin
Debra D Pittman
Rosalind Rose-Miranda
Kathleen M Shields
David V Erbe
James F Tobin
Valder R Arruda
Rodney M Camire
Children's Hospital of Philadelphia · USPfizer (United States) · USUniversity of Pennsylvania · US

Funding

Structural Correlates of Protease and Cofactor FunctionP01HL074124 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI KRISHNASWAMY, SRIRAM · 2003 to 2013
$17.6M
NHLBI NIH HHS P01 HL074124NHLBI NIH HHS P01 HL-74124
6 · The paper itself

Abstract

Effective therapies are needed to control excessive bleeding in a range of clinical conditions. We improve hemostasis in vivo using a conformationally pliant variant of coagulation factor Xa (FXa(I16L)) rendered partially inactive by a defect in the transition from zymogen to active protease. Using mouse models of hemophilia, we show that FXa(I16L) has a longer half-life than wild-type FXa and does not cause excessive activation of coagulation. Once clotting mechanisms are activated to produce its cofactor FVa, FXa(I16L) is driven to the protease state and restores hemostasis in hemophilic animals upon vascular injury. Moreover, using human or murine analogs, we show that FXa(I16L) is more efficacious than FVIIa, which is used to treat bleeding in hemophilia inhibitor patients. FXa(I16L) may provide an effective strategy to enhance blood clot formation and act as a rapid pan-hemostatic agent for the treatment of bleeding conditions.

Indexed as

AnimalsBlood CoagulationDisease Models, AnimalEnzyme PrecursorsFactor VIIaFactor XaGene ExpressionHEK293 CellsHemophilia AHemorrhageHemostasisHemostaticsHumansMiceMice, Inbred BALB CMice, Inbred C57BLEnzyme PrecursorsFactor VIIaFactor XaHemostaticsRecombinant ProteinsThrombin

Identifiers

PMID22020385
PMCPMC4157830
OpenAlexW2067691677

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.