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Fibrillation, AtrialPhase 2NCT00911300

Evaluation of Fondaparinux in Patients With a Heart Rhythm Disturbance Who Undergo Restoration of Normal Heart Rhythm

A Phase 2 study testing fondaparinux, unfractionated heparin and Vitamin-K-Antagonist in people with Fibrillation, Atrial, run by GlaxoSmithKline at 34 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The purpose of this study is to test whether Fondaparinux is effective and safe to prevent thromboembolic events (like for example strokes) and bleeding events in patients who undergo a normalisation of their heart rhythm disturbance. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Fibrillation, Atrial
What is being tested?
fondaparinux, unfractionated heparin and Vitamin-K-Antagonist
Could I receive a placebo?
No, everyone receives an active treatment
How many people
349 participants
Where
34 sitesin 2 countries
Study dates
Aug 2009to Sep 2011
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male or female patients aged at least 18 years with atrial fibrillation (AF) meeting at least one of the following criteria (a, b, c): a. Acute clinical symptoms (like palpitations, chest pain, dyspnea, fatigue, lightheadedness, or syncope) for at least 48 hours and AF on baseline ECG b. Newly discovered AF persisting for >=7 days c. Recurrent AF persisting for >=7 days

Who cannot join

  • No documented sinus rhythm on ECG for more than 1 year
  • Acute neurological deficits (TIA, stroke, intracranial bleeding), or known disease which may cause neurological deficits (e.g., multiple sclerosis, seizure disorder)
  • Treatment with antithrombotic agents, including low-dose anticoagulation, for more than 48 hours prior to randomisation
  • Treatment with oral NSAIDs or ASA at doses greater than 325 mg per day for more than 72 hours prior to randomisation
  • Anticoagulant therapy required or likely to be required during the study period
  • Treatment with ASA at a dose greater than 325 mg per day or oral NSAIDs (at any dose) required or likely to be required during the study period
Show all 15Show fewer
  • Treatment with two or more antiplatelet agents (e.g. clopidogrel and ASA) at any dose at the same time (i.e., within 24 hours)
  • Known hypersensitivity to UFH, VKA, or Fondaparinux or one of these drugs' excipients
  • Active, clinically significant bleeding or clinically significant bleeding within the past month
  • Major surgery within the previous three months
  • Uncontrolled arterial hypertension (persistent systolic blood pressure over 180 mm Hg or diastolic blood pressure over 110 mm Hg)
  • Bacterial endocarditis
  • Calculated creatinine clearance < 30 mL/min
  • Body weight < 50 kg
  • Planned surgery or intervention within the next 65 days

Trial locations and contacts

34 sites in 2 countries.

34 sites in 2 countries

Germany20 sites
  • GSK Investigational Site

    Aschaffenburg, Bavaria, 63739

  • GSK Investigational Site

    Bad Tölz, Bavaria, 83646

  • GSK Investigational Site

    Berlin, State of Berlin, 10249

  • GSK Investigational Site

    Berlin, State of Berlin, 10405

  • GSK Investigational Site

    Berlin, State of Berlin, 13353

  • GSK Investigational Site

    Bielefeld, North Rhine-Westphalia, 33604

  • GSK Investigational Site

    Bonn, North Rhine-Westphalia, 53115

  • GSK Investigational Site

    Bonn, North Rhine-Westphalia, 53127

  • GSK Investigational Site

    Duisburg-Huckingen, North Rhine-Westphalia, 47259

  • GSK Investigational Site

    Frankfurt am Main, Hesse, 60488

  • GSK Investigational Site

    Freiburg im Breisgau, Baden-Wurttemberg, 79106

  • GSK Investigational Site

    Hagenow, Mecklenburg-Vorpommern, 19230

  • GSK Investigational Site

    Kassel, Hesse, 34121

  • GSK Investigational Site

    Kassel, Hesse, 34125

  • GSK Investigational Site

    Magdeburg, Saxony-Anhalt, 39120

  • GSK Investigational Site

    Pirna, Saxony, 01796

  • GSK Investigational Site

    Potsdam, Brandenburg, 14467

  • GSK Investigational Site

    Simbach A. Inn, Bavaria, 84359

  • GSK Investigational Site

    Unna, North Rhine-Westphalia, 59423

  • GSK Investigational Site

    Wesel, North Rhine-Westphalia, 46483

Other trials in Germany

France14 sites
  • GSK Investigational Site

    Albi, 81000

  • GSK Investigational Site

    Antony, 92166

  • GSK Investigational Site

    Brest, 29609

  • GSK Investigational Site

    Créteil, 94000

  • GSK Investigational Site

    Évecquemont, 78740

  • GSK Investigational Site

    Montpellier, 34295

  • GSK Investigational Site

    Paris, 75571

  • GSK Investigational Site

    Paris, 75651

  • GSK Investigational Site

    Pau, 64046

  • GSK Investigational Site

    Pessac, 33604

  • GSK Investigational Site

    Poitiers, 86021

  • GSK Investigational Site

    Rennes, 35033

  • GSK Investigational Site

    Toulouse, 31059

  • GSK Investigational Site

    Toulouse, 31076

Other trials in France

About this study

Official title: An International, Multicentre, Randomised, Open, Controlled, Two-parallel Group, Phase II Pilot Study to Evaluate the Efficacy and Safety of ARIXTRA™ for Anticoagulation of Patients With Atrial Fibrillation Undergoing Electric Cardioversion Following Transesophageal Echocardiography

The purpose of this study is to test whether Fondaparinux is effective and safe to prevent thromboembolic events (like for example strokes) and bleeding events in patients who undergo a normalisation of their heart rhythm disturbance. Fondaparinux will be compared with Heparin and tablets containing Vitamin-K-Antagonists (Phenprocoumon, Fluindione, or Warfarin).

Being tested
fondaparinux, unfractionated heparin, Vitamin-K-Antagonist
Keywords
Cardioversion, Electric, Pathological Conditions, Sings and Symptoms, Cardiovascular Diseases, Heart Diseases, Atrial Fibrillation, Arrhythmias, Cardiac, Pathologic Processes, Anticoagulants
Medical subject headings
Atrial Fibrillation, Cardiovascular Diseases, Heart Diseases, Arrhythmias, Cardiac, Pathologic Processes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • fondaparinuxDrug

    Comparison of different drugs

  • unfractionated heparinDrug

    Comparison of different drugs

  • Vitamin-K-AntagonistDrug

    Comparison of different drugs

Study groups in NCT00911300
Study groupRoleWhat they receive
Arm 1: fondaparinuxActive comparatorNot described
Receives: Drug: fondaparinux
Arm 2: unfractionated heparin + Vitamin-K-AntagonistActive comparatorNot described
Receives: Drug: unfractionated heparin; Drug: Vitamin-K-Antagonist

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With at Least One Event of Cerebral Neurologic Event, Systemic Thromboembolism, Death From Any Cause, and/or Major Bleeding Until the End of Treatment (EOT) Plus 4 Days

    Cerebral neurologic events are defined as any new neurologic disorders caused by cerebrovascular embolization, e.g., Transient Ischemic Attack (TIA), cerebral infarction. The cerebrovascular origin of the event has to be confirmed by objective procedures. Systemic thromboembolism comprises any arterial thromboembolic event (e.g., peripheral vascular embolism, mesenteric infarct, or myocardial infarction). All cerebral neurologic events were adjudicated by a Central Adjudication Committee (CAC), members of which were unaware of the participants' treatment assignment.

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants

Secondary outcomes (9)
  1. Number of Thrombus-negative and Thrombus-positive Participants (Par.) With at Least One Cerebral Neurologic Event

    Cerebral neurologic events are defined as any new neurologic disorders caused by cerebrovascular embolisation, e.g., TIA, cerebral infarction. All cerebral neurologic events were adjudicated by a CAC, members of which were unaware of the participants' treatment assignment.The cerebrovascular origin of the event was confirmed by objective procedures. A thrombus or blood clot is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets that form a platelet plug, and the activation of the humoral coagulation system (i.e., clotting factors).

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Baseline until the follow-up visit (FU) (Day 90+/-7)

  2. Number of Thrombus-negative and Thrombus-positive Participants With at Least One Systemic Thromboembolism

    Systemic thromboembolism comprises any arterial thromboembolic event (e.g., peripheral vascular embolism, mesenteric infarct, or myocardial infarction). All systemic thromboembolic events were adjudicated by a CAC, the members of which were unaware of the participants' treatment assignment. A thrombus or blood clot is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets that form a platelet plug, and the activation of the humoral coagulation system (i.e., clotting factors).

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Baseline until the follow-up visit (FU) (Day 90+/-7)

  3. Number of Thrombus-negative and Thrombus-positive Participants Who Died From Any Cause

    The cause of death was classified as due to a thromboembolic event (like cerebral infarction), bleeding, or other established diagnosis, or as unexplained. All deaths were adjudicated by an independent CAC, the members of which were unaware of the participants' treatment assignment. A thrombus or blood clot is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets that form a platelet plug, and the activation of the humoral coagulation system (i.e., clotting factors).

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Baseline until the follow-up visit (FU) (Day 90+/-7)

  4. Number of Thrombus-negative and Thrombus-positive Participants With at Least One Major Bleeding Event

    Major bleeding: fatal, and/or symptomatic in a critical area/ organ, causes a fall in hemoglobin of >=3 grams/deciliter compared with the pre-randomization level, or leads to the transfusion of >=2 units of whole blood/red blood cells. All bleeding events were adjudicated by a CAC, the members of which were unaware of the participants' treatment assignment. A thrombus/ blood clot is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets, and the activation of the humoral coagulation system (i.e., clotting factors).

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Baseline until the follow-up visit (FU) (Day 90+/-7)

  5. Number of Thrombus-negative and Thrombus-positive Participants With at Least One Minor Bleeding Event

    Minor bleeding is defined as clinically overt bleeding events that do not meet the criteria for major or clinically relevant non-major bleeding. All episodes of bleeding were adjudicated by an independent CAC, the members of which were unaware of the participants' treatment assignment.

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Baseline until the follow-up visit (FU) (Day 90+/-7)

  6. Number of Participants With Primary Successful Electrical Cardioversion (CV) in Sinus Rhythm

    CV may be performed electively to restore sinus rhythm in patients with persistent AF. The primary successful electric CV was assessed by a 12- lead electrocardiogram (ECG) directly after the CV. Results of the last cardioversion were used in cases for which more than one CV was performed.

    Measured: Day 1 until Day 3

  7. Number of Participants With a Thrombus in the Left Atrium (LA) or in the Left Atrial Appendage (LAA) at the Time of the Second TEE

    Atrial fibrillation (AF) causes stagnant blood in the LA or LAA and can lead to a thromboembolism. Stasis in the LAA represents the principal mechanism of thrombus formation in AF.

    Measured: At second TEE (at Day 28+/-4)

  8. Number of Thrombus-negative and Thrombus-positive Participants With Conversion to Sinus Rhythm

    Sinus rhythm is the normal beating of the heart, as measured by an ECG. Normal sinus rhythm not only indicates that the rhythm is normally generated by the sinus node and is traveling in a normal fashion in the heart, but it also indicates that the heart rate (the rate at which the sinus node is generating impulses) is within normal limits.

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Day 64 until the follow-up visit (FU) (Day 90+/-7)

  9. Number of Participants Who Were Re-hospitalized

    Hospitalization signifies that the participant has been detained (usually involving at least an overnight stay) at the hospital or emergency ward for observation and/or treatment that would not have been appropriate in the physician's office or out-patient setting. Re-hospitalization refers to an event of hospitalization after discharge for the initial hospitilization for the cardioversion.

    Measured: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants; and from Baseline until the follow-up visit (FU) (Day 90+/-7)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Jun 2009 (estimated)
  2. Study startAug 2009
  3. Primary completionSep 2011
  4. Study completionSep 2011

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
349 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00911300
Sponsor's protocol ID
111418
Status last verified
Sep 2012
First submitted
28 May 2009
Last updated
1 Oct 2012

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing fondaparinux, unfractionated heparin and Vitamin-K-Antagonist in people with Fibrillation, Atrial, run by GlaxoSmithKline at 34 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 1 Oct 2012. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 34 sites in Germany, France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 5 Sep 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With at Least One Event of Cerebral Neurologic Event, Systemic Thromboembolism, Death From Any Cause, and/or Major Bleeding Until the End of Treatment (EOT) Plus 4 Days (time frame: Baseline (Day 1) until Day 64 (4 days after the EOT [i.e., last administration of study drug]) for CP participants; Baseline until Day 36 (4 days after the EOT) for CN participants). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Oct 2012.

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