Thromboembolism Clinical Trial
Official title:
An International, Randomized, Double-blind Study Evaluating the Efficacy and Safety of Fondaparinux Versus Enoxaparin in the Acute Treatment of Unstable Angina/Non ST-segment Elevation MI Acute Coronary Syndromes
Study Objectives
PRIMARY OBJECTIVE: To evaluate whether fondaparinux is at least as effective as or superior
to enoxaparin in preventing death, myocardial infarction or refactory ischemia up to Day 9
in the acute treatment of patients with unstable angina/non ST-segment elevation myocardial
infarction concurrently managed with standard medical therapy.
SECONDARY OBJECTIVE: If non inferiority of fondaparinux is established on initial
statistical analysis in a second step, superiority of fondaparinux to enoxaparin will be
evaluated statistically.
- To determine whether fondaparinux is superior to enoxaparin in reducing death or MI at
Day 9
- To determine whether fondaparinux is superior to enoxaparin in reducing major bleeding
events up to Day 9
- To determine whether the relative effect on the primary end point of fondaparinux
versus enoxaparin is sustained at Day 14, Day 30, Day 90 and Day 180
Study Drug: Patients will be randomized to receive either:
- Fondaparinux 2.5 mg once and placebo-enoxaparin twice daily by subcutaneous injection
or
- Enoxaparin (1mg/kg) twice and fondaparinux-placebo once daily by subcutaneous injection
Duration of Therapy:
- Fondaparinux 2.5mg daily for 8 days or hospital discharge (whichever is earlier)
- Enoxaparin 1mg/kg b.i.d. x 2-8 days or until clinically stable.
- Patients should receive an ASA and all other standard medical therapies.
Substudy:
- A substudy comparing routine early coronary angiography immediately or as soon as
possible (but no later than 24 hours after randomization) and intervention versus
delayed (>48 hrs) coronary angiography and intervention.
Primary Outcome: The first occurence of any component of the following composite up to Day
9:
- Death
- Myocardial Infarction
- Refractory Ischemia
Status | Completed |
Enrollment | 20078 |
Est. completion date | December 2005 |
Est. primary completion date | December 2005 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 21 Years and older |
Eligibility |
Inclusion Criteria: - Patients presenting or admitted to hospital with symptoms suspected to represent an acute coronary syndrome. - Able to randomize within 24 hours of the onset of the most recent episode of symptoms. - At least one of the following additional criteria: (1) Troponin T of I or CK-MB above the upper limit of normal for the local institution and/or (2) ECG changes compatible with ischemia - Written informed consent Exclusion Criteria: - Age < 21 years - Any contraindication to low molecular weight heparin - Hemorrhagic stroke within the last 12 months - Indication for anticoagulation other than ACS. - Pregnancy or women of childbearing potential who are not using an effective method of contraception - Co-morbid condition with life expectancy less than 6 months - Prior enrollment in one of the fondaparinux ACS trails or currently receiving an experimental pharmacologic agent |
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
GlaxoSmithKline | Duke University, Organon, Sanofi, University of Chicago |
Fifth Organization to Assess Strategies in Acute Ischemic Syndromes Investigators, Yusuf S, Mehta SR, Chrolavicius S, Afzal R, Pogue J, Granger CB, Budaj A, Peters RJ, Bassand JP, Wallentin L, Joyner C, Fox KA. Comparison of fondaparinux and enoxaparin in — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | death, myocardial infarction or refractory | first occurrence of any component of death, myocardial infarction or | up to and including Day 9 | No |
Primary | major bleeding | incidence of adjudicated major bleeding | Up to Day 9 | Yes |
Secondary | Death, myocardial infarction or refractory | Incidence of the individual components of death, myocardial | up to Day 9, Day 14, Day 30, | No |
Secondary | major bleeding | incidence of adjudicated major bleeding | up to and including Day 14, Day | Yes |
Secondary | Any bleeding (major or minor) | Any bleeding (major or minor) as reported by the investigator as | up to and including Day 9, Day | Yes |
Secondary | Severe bleeding complications | Severe bleeding complications according to modified thrombolysis in | up to and including Day 9, Day | Yes |
Secondary | Death, myocardial infarction | composite of death, myocardial infarction | up to Days 9, 14, 30, 90 and | No |
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