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Oral Direct Factor Xa Inhibitor Rivaroxaban in Patients With Acute Symptomatic Pulmonary Embolism - The EINSTEIN PE Study

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT00439777
Recruitment Status : Completed
First Posted : February 26, 2007
Results First Posted : January 24, 2013
Last Update Posted : February 27, 2014
Sponsor:
Collaborator:
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Information provided by (Responsible Party):
Bayer

Brief Summary:
This is a multicenter, randomized, open-label, assessor-blind, event-driven, non-inferiority program for efficacy with a study treatment duration of 3, 6 or 12 months in patients with confirmed acute symptomatic pulmonary embolism (PE) with or without symptomatic Deep-Vein Thrombosis (DVT) (Einstein-PE).

Condition or disease Intervention/treatment Phase
Pulmonary Embolism Drug: Rivaroxaban (Xarelto, BAY59-7939) Drug: Enoxaparin overlapping with and followed by VKA Phase 3

Detailed Description:
Within the US 'Johnson & Johnson Pharmaceutical Research & Development, L.L.C.' is sponsor.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 4833 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Oral Direct Factor Xa Inhibitor Rivaroxaban in Patients With Acute Symptomatic Deep-Vein Thrombosis or Pulmonary Embolism
Study Start Date : March 2007
Actual Primary Completion Date : September 2011
Actual Study Completion Date : December 2011


Arm Intervention/treatment
Experimental: Rivaroxaban (Xarelto, BAY59-7939)
Participants received 15 mg rivaroxaban (oral) twice daily (b.i.d.) for 3 weeks, followed by 20 mg once daily (o.d.)
Drug: Rivaroxaban (Xarelto, BAY59-7939)
During the first 3 weeks patients will receive 15 mg rivaroxaban twice-daily. Thereafter, patients will receive rivaroxaban 20 mg once-daily. Rivaroxaban will be administered orally and should be taken with food.

Active Comparator: Enoxaparin/VKA
Participants received enoxaparin (subcutaneous) 1.0 mg/kg b.i.d. for minimal 5 days, plus vitamin K antagonist (VKA) at individually titrated doses to achieve a target international normalized ratio (INR) of 2.5 (range: 2.0 - 3.0)
Drug: Enoxaparin overlapping with and followed by VKA
Enoxaparin 1.0 mg/kg twice daily with a minimal duration of 5 days. This 5 days treatment could include the period up to 36 hr before randomization if enoxaparin twice-daily was used. VKA should be started as soon as possible but not later than 48 hours after randomization.




Primary Outcome Measures :
  1. Percentage of Participants With Symptomatic Recurrent Venous Thromboembolism [VTE] (i.e. the Composite of Recurrent Deep Vein Thrombosis [DVT] or Fatal or Non-fatal Pulmonary Embolism [PE]) Until the Intended End of Study Treatment [ Time Frame: 3-, 6-, or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either compression ultrasound (for DVT), venography (for DVT), spiral computed tomography (CT) scanning (for PE), pulmonary angiography (for PE), ventilation/perfusion lung scan (for PE), lung scintigraphy (for PE), autopsy (for fatal PE) or unexplained death for which DVT/PE could not be ruled out (for fatal PE), and/or case summaries.


Secondary Outcome Measures :
  1. Percentage of Participants With the Composite Variable Comprising Recurrent DVT, Non-fatal PE and All Cause Mortality Until the Intended End of Study Treatment [ Time Frame: 3-, 6-, or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either compression ultrasound (for DVT), venography (for DVT), spiral computed tomography (CT) scanning (for PE), pulmonary angiography (for PE), ventilation/perfusion lung scan (for PE), lung scintigraphy (for PE), autopsy (for deaths), results/films/images of confirmatory testing, and/or case summaries.

  2. Percentage of Participants With an Event for Net Clinical Benefit 1 Until the Intended End of Study Treatment [ Time Frame: 3-, 6-, or 12-month study treatment period ]
    Net clinical benefit 1: composite of recurrent DVT or non-fatal or fatal PE, and major bleeding. Major bleeding was overt bleeding associated with 2 g/dL or greater fall in hemoglobin, leading to a transfusion of ≥2 units, occurring in a critical site or contributing to death. Net clinical benefit was considered greater in those participants with fewer composite events. All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment, based on either compression ultrasound, venography, spiral computed tomography scanning, pulmonary angiography, ventilation/perfusion lung scan, lung scintigraphy, autopsy or unexplained death for which DVT/PE could not be ruled out, results/films/images of confirmatory testing, and/or case summaries.

  3. Percentage of Participants With Recurrent PE Until the Intended End of Study Treatment [ Time Frame: 3-, 6- or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on spiral computed tomography scanning, pulmonary angiography, ventilation/perfusion lung scan, lung scintigraphy, autopsy or unexplained death for which DVT/PE could not be ruled out, results/films/images of confirmatory testing, and/or case summaries.

  4. Percentage of Participants With Recurrent DVT Until the Intended End of Study Treatment [ Time Frame: 3-, 6- or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either compression ultrasound, venography, results/films/images of confirmatory testing, and/or case summaries.

  5. Percentage of Participants With Clinically Relevant Bleeding, Treatment-emergent (Time Window: Until 2 Days After Last Dose) [ Time Frame: 3-, 6- or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Clinically relevant bleeding included major bleeding (overt bleeding associated with 2 g/dL or greater fall in hemoglobin, leading to a transfusion of 2 or more units of packed red blood cells or whole blood, occurring in a critical site or contributing to death) and non-major bleeding associated with medical intervention, unscheduled physician contact, (temporary) cessation of study treatment, discomfort for the participants such as pain, or impairment of activities of daily life.

  6. Percentage of Participants With All Deaths [ Time Frame: 3-, 6- or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either autopsy, results/films/images of confirmatory testing, and/or case summaries.

  7. Percentage of Participants With Other Vascular Events, On-treatment (Time Window: Until 1 Day After Last Dose) [ Time Frame: 3-, 6- or 12-month study treatment period ]
    All pre-defined vascular events (ST segment elevation myocardial infarction, non ST segment elevation myocardial infarction, unstable angina, ischemic stroke, transient ischemic attack, non-central nervous system systemic embolism or vascular death) were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based results/films/images of confirmatory testing, and/or case summaries.


Other Outcome Measures:
  1. Percentage of Participants With the Individual Components of Efficacy Outcomes Until the Intended End of Study Treatment [ Time Frame: 3-, 6- or 12-month study treatment period ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment, based on either compression ultrasound, venography, spiral computed tomography scanning, pulmonary angiography, ventilation/perfusion lung scan, lung scintigraphy, autopsy or unexplained death for which DVT/PE could not be ruled out, results/films/images of confirmatory testing, and/or case summaries. Major bleeding was overt bleeding associated with 2 g/dL or greater fall in hemoglobin, leading to a transfusion of ≥2 units, occurring in a critical site or contributing to death.

  2. Percentage of Participants With Symptomatic Recurrent VTE (i.e. the Composite of Recurrent DVT or Fatal or Non-fatal PE) During Observational Period [ Time Frame: Up to 30 days after the last intake of study medication ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either compression ultrasound (for DVT), venography (for DVT), spiral computed tomography (CT) scanning (for PE), pulmonary angiography (for PE), ventilation/perfusion lung scan (for PE), lung scintigraphy (for PE), autopsy (for fatal PE) or unexplained death for which DVT/PE could not be ruled out (for fatal PE), and/or case summaries.

  3. Percentage of Participants With the Composite Variable Comprising Recurrent DVT, Non-fatal PE and All Cause Mortality During Observational Period [ Time Frame: Up to 30 days after the last intake of study medication ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either compression ultrasound (for DVT), venography (for DVT), spiral computed tomography (CT) scanning (for PE), pulmonary angiography (for PE), ventilation/perfusion lung scan (for PE), lung scintigraphy (for PE), autopsy (for deaths), results/films/images of confirmatory testing, and/or case summaries.

  4. Percentage of Participants With an Event for Net Clinical Benefit 1 During Observational Period [ Time Frame: Up to 30 days after the last intake of study medication ]
    Net clinical benefit 1: composite of recurrent DVT or non-fatal or fatal PE, and major bleeding. Major bleeding was overt bleeding associated with 2 g/dL or greater fall in hemoglobin, leading to a transfusion of ≥2 units, occurring in a critical site or contributing to death. Net clinical benefit was considered greater in those participants with fewer composite events. All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment, based on either compression ultrasound, venography, spiral computed tomography scanning, pulmonary angiography, ventilation/perfusion lung scan, lung scintigraphy, autopsy or unexplained death for which DVT/PE could not be ruled out, results/films/images of confirmatory testing, and/or case summaries.

  5. Percentage of Participants With Recurrent DVT During Observational Period [ Time Frame: Up to 30 days after the last intake of study medication ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment. Events were assessed based on either compression ultrasound, venography, results/films/images of confirmatory testing, and/or case summaries.

  6. Percentage of Participants With the Individual Components of Efficacy Outcomes During Observational Period [ Time Frame: Up to 30 days after the last intake of study medication ]
    All events were adjudicated and confirmed by a central independent adjudication committee blinded to treatment, based on either compression ultrasound, venography, spiral computed tomography scanning, pulmonary angiography, ventilation/perfusion lung scan, lung scintigraphy, autopsy or unexplained death for which DVT/PE could not be ruled out, results/films/images of confirmatory testing, and/or case summaries. Major bleeding was overt bleeding associated with 2 g/dL or greater fall in hemoglobin, leading to a transfusion of ≥2 units, occurring in a critical site or contributing to death.



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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Confirmed acute symptomatic proximal PE with or without symptomatic DVT

Exclusion Criteria:

  • Legal lower age limitations (country specific)
  • Thrombectomy, insertion of a caval filter, or use of a fibrinolytic agent to treat the current episode of DVT and/or PE
  • Other indication for VKA than DVT and/or PE
  • The pre-randomization anti-coagulant treatment (Criteria # 4) has been prolonged from 36 hours to a maximum of 48 hours.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00439777


Locations
Show Show 305 study locations
Sponsors and Collaborators
Bayer
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Investigators
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Study Director: Bayer Study Director Bayer
Publications of Results:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Bayer
ClinicalTrials.gov Identifier: NCT00439777    
Other Study ID Numbers: 11702b
2006-004495-13 ( EudraCT Number )
First Posted: February 26, 2007    Key Record Dates
Results First Posted: January 24, 2013
Last Update Posted: February 27, 2014
Last Verified: January 2014
Additional relevant MeSH terms:
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Pulmonary Embolism
Embolism
Embolism and Thrombosis
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Enoxaparin
Rivaroxaban
Factor Xa Inhibitors
Antithrombins
Serine Proteinase Inhibitors
Protease Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anticoagulants
Fibrinolytic Agents
Fibrin Modulating Agents