Evidence map›Paper›PMID 32092140›Full record

Trial reportBlood advances2020

A phase 2 PK/PD study of andexanet alfa for reversal of rivaroxaban and edoxaban anticoagulation in healthy volunteers.

Genmin Lu, Pamela B Conley, Janet M Leeds, Mark J Karbarz, Gallia G Levy, Vandana S Mathur, Janice Castillo, Mark Crowther, John T Curnutte

2 registry-linked trialsOpen access · goldAbstract readClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in Blood advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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.

NCT03551743 phase2completednot on this map

A Randomized, Double-Blind, Vehicle-Controlled Multiple Dose Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Intravenously Administered PRT064445 After Dosing to Steady State With One of Four Direct/Indirect fXa Inhibitors in Healthy Volunteers

TypeinterventionalSponsorPortola PharmaceuticalsRan2012 to 2015Enrolled28ConditionsHealthy VolunteersArmsPRT064445/Edoxaban, Placebo/Edoxaban, Placebo
NCT03578146 phase2completednot on this map

A Randomized, Double-Blind, Vehicle-Controlled Multiple Dose Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Intravenously Administered PRT064445 After Dosing to Steady State With One of Four Direct/Indirect fXa Inhibitors in Healthy Volunteers

TypeinterventionalSponsorPortola PharmaceuticalsRan2012 to 2015Enrolled48ConditionsHealthy VolunteersArmsPRT064445/Rivaroxaban, Placebo/Rivaroxaban, Placebo
3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Article
  3. Emergency reversal of Rivaroxaban with Andexanet alfa in a child with hemorrhagic brain metastasis from Wilms tumor.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2026
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  11. Improving Patient Safety Through Proper Ordering and Administration of Andexanet Alfa.Mayo Clinic proceedings. Innovations, quality & outcomes · 2024
    Article
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  15. [Management of bleeding in patients on antithrombotic therapy].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2021
    Review
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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

9 authors at 2 institutions in 2 countries.

Genmin LuPortola Pharmaceuticals, Inc., South San Francisco, CA.
Pamela B ConleyPortola Pharmaceuticals, Inc., South San Francisco, CA.
Janet M LeedsPortola Pharmaceuticals, Inc., South San Francisco, CA.
Mark J KarbarzPortola Pharmaceuticals, Inc., South San Francisco, CA.
Gallia G LevyPortola Pharmaceuticals, Inc., South San Francisco, CA.
Vandana S MathurMathur Consulting, San Francisco, CA; and.
Janice CastilloPortola Pharmaceuticals, Inc., South San Francisco, CA.
Mark CrowtherDepartment of Medicine, McMaster University, Hamilton, ON, Canada.
John T CurnuttePortola Pharmaceuticals, Inc., South San Francisco, CA.
Portola Pharmaceuticals (United States) · USMcMaster University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As with any anticoagulant, factor Xa (FXa) inhibitors are associated with a risk of major bleeding. Andexanet alfa is a recombinant modified human FXa lacking enzymatic activity, developed for reversal of FXa inhibitor-induced anticoagulation. In two phase 2, randomized, double-blind, placebo-controlled, single-center studies, different regimens of andexanet alfa were administered to healthy volunteers after therapeutic anticoagulation with rivaroxaban or edoxaban, and multiple anticoagulation reversal and safety end points were evaluated. Andexanet alfa rapidly and effectively reversed anticoagulation with both rivaroxaban and edoxaban. Within 2 minutes after bolus, anti-FXa activity decreased significantly, with maximum decreases of ≈93% (P < .05) and ≈82% (P < .05), respectively, compared with placebo. The stoichiometric ratios of andexanet alfa:total anticoagulant at maximum reversal of anti-FXa activity ranged from 1:1 to 1.3:1 for rivaroxaban and 1.41:1 to 2.58:1 for edoxaban. Sustained normalization of thrombin generation for ≈2 hours and sustained decrease in unbound anticoagulant (maximum ≈80%) for up to ≈4 hours following completion of andexanet alfa administration, compared with placebo, were observed when andexanet was administered as a bolus or as a bolus followed by continuous infusion. Andexanet alfa was well tolerated, and there were no serious adverse events or thrombotic events. Andexanet alfa has been approved in the United States and Europe for reversal of anticoagulation in patients treated with rivaroxaban or apixaban who experience life-threatening or uncontrolled bleeding. These studies were registered with clinicaltrials.gov (#NCT03578146 and #NCT03551743).

Indexed as

Factor XaRivaroxabanAnticoagulantsFactor Xa InhibitorsHealthy VolunteersHumansPyridinesRecombinant ProteinsThiazolesUnited StatesAnticoagulantsedoxabanFactor XaFactor Xa InhibitorsPRT064445PyridinesRecombinant ProteinsRivaroxabanThiazoles

Identifiers

PMID32092140
PMCPMC7042988
OpenAlexW3007752132

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.