Evidence map›Paper›PMID 29590221›Full record

ArticlePloS one2018

Andexanet alfa effectively reverses edoxaban anticoagulation effects and associated bleeding in a rabbit acute hemorrhage model.

Genmin Lu, Polly Pine, Janet M Leeds, Francis DeGuzman, Pratikhya Pratikhya, Joyce Lin, John Malinowski, Stanley J Hollenbach, John T Curnutte, Pamela B Conley

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.6field-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

10 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Review
  9. Edoxaban for Venous Thromboembolism Treatment-The New Kid on The Block for Latin America. A Practical Guide.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis · 2018
    Review
  10. Review
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 1 institution in 1 country.

Genmin LuPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Polly PinePortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Janet M LeedsPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Francis DeGuzmanPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Pratikhya PratikhyaPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Joyce LinPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
John MalinowskiPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Stanley J HollenbachPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
John T CurnuttePortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.
Pamela B ConleyPortola Pharmaceuticals Inc., South San Francisco, CA, United States of America.ORCID 0000-0001-9400-6531
Portola Pharmaceuticals (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIncreasing use of factor Xa (FXa) inhibitors necessitates effective reversal agents to manage bleeding. Andexanet alfa, a novel modified recombinant human FXa, rapidly reverses the anticoagulation effects of direct and indirect FXa inhibitors.

objectiveTo evaluate the ability of andexanet to reverse anticoagulation in vitro and reduce bleeding in rabbits administered edoxaban. MATERIALS AND

methodsIn vitro studies characterized the interaction of andexanet with edoxaban and its ability to reverse edoxaban-mediated anti-FXa activity. In a rabbit model of surgically induced, acute hemorrhage, animals received edoxaban vehicle+andexanet vehicle (control), edoxaban (1 mg/kg)+andexanet vehicle, edoxaban+andexanet (75 mg, 5-minute infusion, 20 minutes after edoxaban), or edoxaban vehicle+andexanet prior to injury.

resultsAndexanet bound edoxaban with high affinity similar to FXa. Andexanet rapidly and dose-dependently reversed the effects of edoxaban on FXa activity and coagulation pharmacodynamic parameters in vitro. In edoxaban-anticoagulated rabbits, andexanet reduced anti-FXa activity by 82% (from 548±87 to 100±41 ng/ml; P<0.0001), mean unbound edoxaban plasma concentration by ~80% (from 100±10 to 21±6 ng/ml; P<0.0001), and blood loss by 80% vs. vehicle (adjusted for control, 2.6 vs. 12.9 g; P = 0.003). The reduction in blood loss correlated with the decrease in anti-FXa activity (r = 0.6993, P<0.0001) and unbound edoxaban (r = 0.5951, P = 0.0035).

conclusionThese data demonstrate that andexanet rapidly reversed the anticoagulant effects of edoxaban, suggesting it could be clinically valuable for the management of acute and surgery-related bleeding. Correlation of blood loss with anti-FXa activity supports the use of anti-FXa activity as a biomarker for assessing anticoagulation reversal in clinical trials.

Indexed as

AnimalsAnticoagulantsAntidotesBlood CoagulationDisease Models, AnimalFactor XaFactor Xa InhibitorsHemorrhageMalePyridinesRabbitsRecombinant ProteinsThiazolesAnticoagulantsAntidotesedoxabanFactor XaFactor Xa InhibitorsPRT064445PyridinesRecombinant ProteinsThiazoles

Identifiers

PMID29590221
PMCPMC5874076
OpenAlexW2794709531

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.