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CompletedNCT02319460Updated May 26, 2021

An Observational Cohort Study to Investigate the Risk of Thromboembolic Events in Patients Receiving Kcentra® or Plasma to Reverse Vitamin K Antagonist (VKA) Therapy in the Setting of Acute Major Bleeding

An observational study in Hemorrhage, sponsored by CSL Behring. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-05-26.

Sponsored by CSL Behring · Observational

Study type
Observational
Model
Cohort
Time perspective
Other
Enrollment
2,238
Ages
18 Years and older
Sex
All
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Study summary

This observational cohort study is designed to obtain product safety information from the routine clinical setting within large, diverse, community-based populations. In the setting of acute major bleeding in which patients are treated for Vitamin K antagonist reversal, the risk of thromboembolic events (TEE) in patients treated with Kcentra® and in patients treated with plasma will be assessed.

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Conditions studied

  • Hemorrhage

Keywords

  • Vitamin K Reversal Antagonist Therapy of Acute Major Bleeding
  • Warfarin Reversal
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In context

Thromboembolism

818 studies on the registry are indexed under Thromboembolism; 98 are open to participants now.

This study's enrollment of 2,238 is above the median of 500 across 344 observational studies indexed under Thromboembolism.

Browse Thromboembolism studies →

Lead sponsor

CSL Behring is the lead sponsor of 142 studies on the registry; 18 are open to participants now.

Of its 24 completed or terminated interventional studies of FDA-regulated products, 17 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adult members of the Kaiser Permanente Northern and Southern California health care delivery systems, receiving chronic warfarin therapy and meeting study eligibility criteria.

Inclusion criteria

  • Aged 18 years and older at admission for VKA-associated major bleeding
  • A minimum of 365 days of continuous health plan enrollment before the index hospitalization involving acute VKA reversal treatment
  • A minimum of 365 days of continuous pharmacy benefit before the index hospitalization involving acute VKA reversal treatment

Exclusion criteria

Exclusion Criteria:

Patients will be excluded from the primary analyses if they:

  • Require urgent reversal of VKA therapy in the setting of bleeding due to major trauma (eg, motor vehicle accident)
  • Requiring urgent reversal of VKA therapy for a surgical procedure unrelated to major bleeding (eg, appendicitis)
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Study design

Observational model
Cohort
Time perspective
Other
Enrollment
2,238 participants (actual)
Patient registry
No

Groups and cohorts

  • Retrospective

    Retrospective cohort of adults hospitalized for major bleeding during 2008 to 2013 who receive plasma for urgent reversal of acquired coagulation factor deficiency induced by oral VKA therapy

    Biological: Plasma

  • Prospective

    Prospective parallel cohort of adults hospitalized for major bleeding during 2014 to 2020 who either receive Kcentra® or plasma for urgent reversal of acquired coagulation factor deficiency induced by oral VKA therapy

    Biological: Kcentra® · Biological: Plasma

Interventions

  • BiologicalKcentra®

    Kcentra®, Prothrombin Complex Concentrate (Human), is a blood coagulation factor replacement product that contains coagulation Factors II, VII, IX and X, and antithrombotic Proteins C and S as a lyophilized concentrate.

    Also known as: Prothrombin Complex Concentrate (Human), Beriplex

  • BiologicalPlasma
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What researchers measure

Primary outcomes

  1. Risk of thromboembolic events (TEE) for patients without a recent history of TEE

    The risk of confirmed thromboembolic events (TEE) will be estimated for patients without a recent history of TEE treated with Kcentra® compared to patients treated with plasma. The index date is the date of acute VKA reversal for major bleeding event.

    Time frame: Within 45 days after the index date

Secondary outcomes

  1. Risk of thromboembolic events

    The risk of confirmed TEE and confirmed fatal TEE will be each estimated for patients treated with Kcentra® compared to patients treated with plasma, overall and for patients in the following subgroups: * Recent history of TEE * No recent history of TEE * Any history of TEE The index date is the date of acute VKA reversal for major bleeding event.

    Time frame: Within 45 days after the index date

  2. Risk of death from any cause

    The risk of death from any cause will be estimated for patients treated with Kcentra® compared to patients treated with plasma, overall and for patients in the following subgroups: * Recent history of TEE * No recent history of TEE * Any history of TEE The index date is the date of acute VKA reversal for major bleeding event.

    Time frame: Within 45 days after the index date

  3. Rates of use of VKA therapy after the index date

    The rates of use of VKA therapy or other antithrombotic agents will be assessed among patients with and without any history of TEE. The index date is the date of acute VKA reversal for major bleeding event.

    Time frame: Within 90 days after the index date

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Study locations

1 site
  • Study Site
    Oakland, California 94612, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 26, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02319460
Lead sponsor
CSL Behring
Collaborators
Kaiser Permanente
Responsible party
Sponsor
First posted
Dec 18, 2014
Start date
Apr 24, 2014
Primary completion
Jun 30, 2020
Completion
Jun 30, 2020
Last update
May 26, 2021

Study contacts

Clinical Epidemiologist
study director · CSL Behring
Alan S. Go, MD
principal investigator · Kaiser Permanente
Kristi Reynolds, PhD, MPH
principal investigator · Kaiser Permanente
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2021. You cannot join it, but the record below documents what was studied.

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