A Study to Evaluate the Safety of Apixaban in Acute Coronary Syndrome (ACS) Japanese Patients

Overview[ - collapse ][ - ]

Purpose The purpose of this study is to assess the bleeding safety (the composite endpoint of major and clinically relevant non-major bleeding) of 2 doses of apixaban (2.5 mg BID and 5.0 mg BID) or placebo in combination with standard therapy (aspirin and /or additional antiplatelet therapy) over a 24 week treatment period in selected subjects with recent (≤7 days) acute coronary syndrome.
ConditionAcute Coronary Syndrome
InterventionDrug: Apixaban
Drug: Apixaban
Other: Placebo
PhasePhase 2
SponsorPfizer
Responsible PartyPfizer
ClinicalTrials.gov IdentifierNCT00852397
First ReceivedFebruary 26, 2009
Last UpdatedAugust 27, 2013
Last verifiedAugust 2013

Tracking Information[ + expand ][ + ]

First Received DateFebruary 26, 2009
Last Updated DateAugust 27, 2013
Start DateApril 2009
Estimated Primary Completion DateDecember 2010
Current Primary Outcome MeasuresPercentage of Participants Who Had Composite of International Society on Thrombosis and Haemostasis (ISTH)-Defined Major and Clinically-relevant Non-major (CRNM) Bleeding Events Occurring During the Treatment Period. [Time Frame: Week 0 to Week 24] [Designated as safety issue: Yes]Major bleeding event was acute clinically overt bleeding accompanied by decrease in hemoglobin of 2 g/dL or more over a 24-hour period, transfusion of 2 or more units of packed red blood cells, or bleeding that occurs in critical site (e.g., intracranial). Fatal bleeding was also major bleeding event. CRNM bleeding was acute or sub-acute clinically overt bleeding that did not satisfy the criteria for major bleeding and that led to either hospital admission for bleeding, physician guided medical or surgical treatment for bleeding or a change in antithrombotic therapy.
Current Secondary Outcome Measures
  • Percentage of Participants Who Had One or More All Bleeding Occurring During the Treatment Period. [Time Frame: Week 0 to Week 24] [Designated as safety issue: Yes]All bleeding included major bleeding (including fatal bleeding), clinically-relevant non-major (CRNM) bleeding, and minor bleeding per international society on thrombosis and haemostasis (ISTH) definitions.
  • Percentage of Participants Who Had Major Bleeding Occurring During the Treatment Period Per International Society on Thrombosis and Haemostasis (ISTH) Definitions. [Time Frame: Week 0 to Week 24] [Designated as safety issue: Yes]Major bleeding event was defined as an acute clinically overt bleeding accompanied by decrease in hemoglobin of 2 g/dL or more over a 24-hour period, transfusion of 2 or more units of packed red blood cells, or bleeding that occured in critical site (e.g., intracranial). Fatal bleeding was also major bleeding event.
  • Percentage of Participants Who Had Thrombolysis in Myocardial Infarction (TIMI)-Defined Major Bleeding Occurring During the Treatment Period. [Time Frame: Week 0 to Week 24] [Designated as safety issue: Yes]TIMI major bleeding event was difined as an intracranial bleeding or clinically overt bleeding (including bleeding evident on imaging studies) associated with a >= 5 gm/dL fall in hemoglobin or a 15% fall in hematocrit from baseline, accounting for the effect of transfusions (1 unit packed red blood cells = 1 gm/dL hemoglobin = 3% hematocrit).
  • Percentage of Participants Who Had Composite of All-cause Death, Non-fatal Myocardial Infarction, Unstable Angina and Stroke During 30 Days After Discontinuation of Therapy. [Time Frame: For 30 days after Week 24 or the discontinuation of study drug] [Designated as safety issue: Yes]
  • Percentage of Participants Who Had Composite of All-cause Death, Non-fatal Myocardial Infarction (MI), Unstable Angina, and Non-hemorrhagic Stroke Occurring During the Intended Treatment Period. [Time Frame: From the day of randomization to the later date of either 2-days after the last dose of study drug or Day 168/Week 24 after randomization day (or the study termination date [19 November 2010, Japan time])] [Designated as safety issue: No]Intended treatment period for efficacy endpoints was defined as a period starting on the day of randomization and ending at the later date of either 2-days after the last dose of study drug or Day 168/Week 24 after randomization day (or the study termination date [19 November 2010, Japan time]).

Descriptive Information[ + expand ][ + ]

Brief TitleA Study to Evaluate the Safety of Apixaban in Acute Coronary Syndrome (ACS) Japanese Patients
Official TitleA Phase 2, Placebo-Controlled, Randomized, Double-Blinded, Multicenter, Study To Evaluate The Bleeding Profile Of 2.5 Mg And 5.0 Mg BID Apixaban In Combination With Standard Therapy In Patients With Recent (≤7 Days) Acute Coronary Syndrome (ACS)
Brief Summary
The purpose of this study is to assess the bleeding safety (the composite endpoint of major
and clinically relevant non-major bleeding) of 2 doses of apixaban (2.5 mg BID and 5.0 mg
BID) or placebo in combination with standard therapy (aspirin and /or additional
antiplatelet therapy) over a 24 week treatment period in selected subjects with recent (≤7
days) acute coronary syndrome.
Detailed Description
Due to withdraw of global phase 3 study (APPRAISE-2) for safety issue, B0661004 Data
monitoring committee (DMC) also recommended terminating this study. Therefore, Pfizer
decided to stop this study.
Study TypeInterventional
Study PhasePhase 2
Study DesignAllocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment
ConditionAcute Coronary Syndrome
InterventionDrug: Apixaban
Apixaban 2.5 mg tablet BID for 24 weeks
Drug: Apixaban
Apixaban 5.0 mg tablet BID for 24 weeks
Other: Placebo
Placebo tablet for 24 weeks
Study Arm (s)
  • Experimental: Apixaban 2.5 mg
  • Experimental: Apixaban 5.0 mg
  • Placebo Comparator: Placebo

Recruitment Information[ + expand ][ + ]

Recruitment StatusTerminated
Estimated Enrollment151
Estimated Completion DateDecember 2010
Estimated Primary Completion DateDecember 2010
Eligibility Criteria
Inclusion Criteria:

- Recent (≤ 7 days) ACS

- Clinically stable, and receiving standard treatment (patients must be treated with
aspirin ≤ 100 mg/day, with or without clopidogrel 75 mg/day or ticlopidine 200
mg/day) based on the physician's judgment)

Exclusion Criteria:

- Scheduled/planned cardiac catheterization, PCI, CABG or other invasive procedure
planned in the 24 weeks (within treatment period) following randomization

- Persistent severe hypertension, defined as systolic blood pressure of ≥180 mm Hg or
diastolic pressure of ≥110 mm Hg

- Active bleeding or at high risk for bleeding (e.g., cirrhosis of the liver, any
history of intracranial hemorrhage).
GenderBoth
Ages20 Years
Accepts Healthy VolunteersNo
ContactsNot Provided
Location CountriesJapan

Administrative Information[ + expand ][ + ]

NCT Number NCT00852397
Other Study ID NumbersB0661004
Has Data Monitoring CommitteeYes
Information Provided ByPfizer
Study SponsorPfizer
CollaboratorsBristol-Myers Squibb
Investigators Study Director: Pfizer CT.gov Call Center Pfizer
Verification DateAugust 2013

Locations[ + expand ][ + ]

Pfizer Investigational Site
Kasuga, Fukuoka, Japan
Pfizer Investigational Site
Kitakyusyu, Fukuoka, Japan
Pfizer Investigational Site
Kure, Hiroshima, Japan
Pfizer Investigational Site
Sapporo, Hokkaido, Japan
Pfizer Investigational Site
Uji, Kyoto, Japan
Pfizer Investigational Site
Ikoma, Nara, Japan
Pfizer Investigational Site
Hirakata, Osaka, Japan
Pfizer Investigational Site
Kawachinagano, Osaka, Japan
Pfizer Investigational Site
Matsubara, Osaka, Japan
Pfizer Investigational Site
Yao, Osaka, Japan
Pfizer Investigational Site
Wako, Saitama, Japan
Pfizer Investigational Site
Sunto, Shizuoka, Japan
Pfizer Investigational Site
Minato-Ku, Tokyo, Japan
Pfizer Investigational Site
Shinagawa, Tokyo, Japan
Pfizer Investigational Site
Gifu, Japan
Pfizer Investigational Site
Hiroshima, Japan
Pfizer Investigational Site
Kumamoto, Japan
Pfizer Investigational Site
Osaka, Japan