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Prevention of Cardiovascular Events (eg, Death From Heart or Vascular Disease, Heart Attack, or Stroke) in Patients With Prior Heart Attack Using Ticagrelor Compared to Placebo on a Background of Aspirin

A Randomized, Double-Blind, Placebo Controlled, Parallel Group, Multinational Trial, to Assess the Prevention of Thrombotic Events With Ticagrelor Compared to Placebo on a Background of Acetyl Salicylic Acid (ASA) Therapy in Patients With History of Myocardial Infarction

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01225562
Acronym
PEGASUS
Enrollment
21379
Registered
2010-10-21
Start date
2010-10-31
Completion date
2014-12-31
Last updated
2016-01-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Myocardial Infarction, Cardiovascular Death, Atherothrombosis, Stroke

Keywords

Heart attack, Heart Disease, Acute coronary syndrome, ACS, Cardiovascular Disease

Brief summary

This study is being carried out to see if a new drug called ticagrelor given twice daily in addition to the ASA therapy decreases the frequency of cardiovascular events (e.g., death from heart disease, heart attack, or stroke).

Interventions

Oral dose twice a day

Oral dose twice a day

Oral dose twice a day

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
50 Years to 130 Years
Healthy volunteers
No

Inclusion criteria

* Person who had a heart attack within 1 - 3 years ago and at least one additional risk factor: Age ≥ 65 years old, Diabetes requiring medication, Documented history of 2nd prior MI (\>1 year ago). Angiographic evidence of multivessel CAD, and / or Chronic, non-end stage renal dysfunction. * Females of child-bearing potential must have a negative pregnancy test at enrollment * Persons who are currently taking aspirin between 75 and 150 mg once daily

Exclusion criteria

* Persons who are being treated with agents inhibiting blood clotting if the agent cannot be stopped at study start * Persons who have planned coronary, cerebrovascular, or peripheral arterial Revascularization (invasive surgery) at study start * Persons with known bleeding disorders * Persons who need chronic oral anticoagulant therapy or chronic low-molecular-weight heparin * Persons with a history of ischemic stroke * Persons with a history of intracranial bleeding at any time, a tumor or blood vessel abnormality in the brain and/or spinal cord at any time, a history of surgery involving the brain or spinal cord within the last 5 years, or a history of bleeding from the gastrointestinal tract (eg, esophagus, stomach, colon, rectum) within the last 6 months or a major surgery within the last 30 days. * Persons considered to be at risk of bradycardic events unless already treated with a permanent pacemaker * Persons who have had open heart surgery within the past 5 years, unless the person had a heart attack after the surgery * Persons with known severe liver disease * Persons with kidney failure requiring dialysis * Persons with life expectancy \< 1 year

Design outcomes

Primary

MeasureTime frameDescription
Kaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death), Myocardial Infarction (MI) or Stroke Within 3 Years From RandomizationRandomization up to 47 monthsParticipants with CV death, MI or Stroke. If no event, censoring occurs at the earliest of the efficacy cut-off date 14 Sep 2014, withdrawal of consent, non-CV death or at the last time point of complete clinical event assessment. Events were adjudicated by a blinded endpoint committee. The Kaplan-Meier estimate reports the percentage of patients who experienced CV Death, MI or stroke within 3 years from randomization
Kaplan-Meier Estimate of the Percentage of Patients Who Experienced a TIMI Major Bleeding Within 3 Years From First Dose of Study Drug Units: Percentage of PatientsFirst dosing up to 48 monthsA Thrombolysis in Myocardial Infarction (TIMI) study group major bleeding is defined as any fatal bleeding (leading directly to death within 7 days), any intrcranial bleeding or any clinically overt signs of haemorrhage associated with a drop in Haemoglobin of \>= 5g/dL. Events were adjudicated by a clinical events committee. Censoring ocurrs at 7 days following last dose of study drug. The Kaplan-Meier estimate reports the percentage of patients who experienced a TIMI Major bleeding within 3 years from first dose of study drug

Secondary

MeasureTime frameDescription
Kaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death) Within 3 Years From RandomizationRandomization up to 47 monthsParticipants with CV death. If no event, censoring occurs at the earliest of the efficacy cut-off date 14 Sep 2014, withdrawal of consent, non-CV death or at the last time point of complete clinical event assessment. Events were adjudicated by a blinded endpoint committee. The Kaplan-Meier estimate reports the percentage of patients who experienced CV Death within 3 years from randomization
Kaplan-Meier Estimate of the Percentage of Patients Who Died From Any Cause Within 3 Years From RandomizationRandomization up to 47 monthsParticipants with death from any cause. If no event, censoring occurs at the earliest of the efficacy cut-off date 14 Sep 2014, withdrawal of consent or the last time point the particapant was known to be alive. Events were adjudicated by a blinded endpoint committee. The Kaplan-Meier estimate reports the percentage of patients who died from any cause within 3 years from randomization

Countries

Argentina, Australia, Belgium, Brazil, Bulgaria, Canada, Chile, China, Colombia, Czechia, France, Germany, Hungary, Italy, Japan, Netherlands, Norway, Peru, Philippines, Poland, Romania, Russia, Slovakia, South Africa, South Korea, Spain, Sweden, Turkey (Türkiye), Ukraine, United Kingdom, United States

Participant flow

Pre-assignment details

The Participant Flow shows patients randomized. This number is different from patients enrolled in the protocol section which includes patients who were enrolled, but not randomized.

Participants by arm

ArmCount
Ticagrelor 90 mg
Ticagrelor 90 mg twice daily (BD)
7,050
Ticagrelor 60 mg
Ticagrelor 60 mg twice daily (BD)
7,045
Placebo
Matching placebo
7,067
Total21,162

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyLost to Follow-up361
Overall StudyWithdrawal by Subject525052

Baseline characteristics

CharacteristicTicagrelor 90 mgTicagrelor 60 mgPlaceboTotal
Age, Continuous65.4 years
STANDARD_DEVIATION 8.4
65.2 years
STANDARD_DEVIATION 8.4
65.4 years
STANDARD_DEVIATION 8.3
65.3 years
STANDARD_DEVIATION 8.3
Sex: Female, Male
Female
1682 Participants1661 Participants1717 Participants5060 Participants
Sex: Female, Male
Male
5368 Participants5384 Participants5350 Participants16102 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
945 / 6,9961,992 / 6,9582,245 / 6,988
serious
Total, serious adverse events
1,757 / 6,9961,853 / 6,9581,918 / 6,988

Outcome results

Primary

Kaplan-Meier Estimate of the Percentage of Patients Who Experienced a TIMI Major Bleeding Within 3 Years From First Dose of Study Drug Units: Percentage of Patients

A Thrombolysis in Myocardial Infarction (TIMI) study group major bleeding is defined as any fatal bleeding (leading directly to death within 7 days), any intrcranial bleeding or any clinically overt signs of haemorrhage associated with a drop in Haemoglobin of \>= 5g/dL. Events were adjudicated by a clinical events committee. Censoring ocurrs at 7 days following last dose of study drug. The Kaplan-Meier estimate reports the percentage of patients who experienced a TIMI Major bleeding within 3 years from first dose of study drug

Time frame: First dosing up to 48 months

Population: The safety analysis set defined as all patients who took at least one dose of study drug

ArmMeasureValue (NUMBER)
Ticagrelor 90 mgKaplan-Meier Estimate of the Percentage of Patients Who Experienced a TIMI Major Bleeding Within 3 Years From First Dose of Study Drug Units: Percentage of Patients2.6 Percentage of Patients
Ticagrelor 60 mgKaplan-Meier Estimate of the Percentage of Patients Who Experienced a TIMI Major Bleeding Within 3 Years From First Dose of Study Drug Units: Percentage of Patients2.3 Percentage of Patients
PlaceboKaplan-Meier Estimate of the Percentage of Patients Who Experienced a TIMI Major Bleeding Within 3 Years From First Dose of Study Drug Units: Percentage of Patients1.1 Percentage of Patients
p-value: <0.000195% CI: [1.96, 3.7]Regression, Cox
p-value: <0.000195% CI: [1.68, 3.21]Regression, Cox
Primary

Kaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death), Myocardial Infarction (MI) or Stroke Within 3 Years From Randomization

Participants with CV death, MI or Stroke. If no event, censoring occurs at the earliest of the efficacy cut-off date 14 Sep 2014, withdrawal of consent, non-CV death or at the last time point of complete clinical event assessment. Events were adjudicated by a blinded endpoint committee. The Kaplan-Meier estimate reports the percentage of patients who experienced CV Death, MI or stroke within 3 years from randomization

Time frame: Randomization up to 47 months

Population: Intention to treat (ITT) population defined as all participants who were randomized to study treatment

ArmMeasureValue (NUMBER)
Ticagrelor 90 mgKaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death), Myocardial Infarction (MI) or Stroke Within 3 Years From Randomization7.8 Percentage of Patients
Ticagrelor 60 mgKaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death), Myocardial Infarction (MI) or Stroke Within 3 Years From Randomization7.8 Percentage of Patients
PlaceboKaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death), Myocardial Infarction (MI) or Stroke Within 3 Years From Randomization9.0 Percentage of Patients
p-value: 0.00895% CI: [0.75, 0.96]Regression, Cox
p-value: 0.004395% CI: [0.74, 0.95]Regression, Cox
Secondary

Kaplan-Meier Estimate of the Percentage of Patients Who Died From Any Cause Within 3 Years From Randomization

Participants with death from any cause. If no event, censoring occurs at the earliest of the efficacy cut-off date 14 Sep 2014, withdrawal of consent or the last time point the particapant was known to be alive. Events were adjudicated by a blinded endpoint committee. The Kaplan-Meier estimate reports the percentage of patients who died from any cause within 3 years from randomization

Time frame: Randomization up to 47 months

Population: Intention to treat (ITT) population defined as all participants who were randomized to study treatment

ArmMeasureValue (NUMBER)
Ticagrelor 90 mgKaplan-Meier Estimate of the Percentage of Patients Who Died From Any Cause Within 3 Years From Randomization5.1 Percentage of Patients
Ticagrelor 60 mgKaplan-Meier Estimate of the Percentage of Patients Who Died From Any Cause Within 3 Years From Randomization4.7 Percentage of Patients
PlaceboKaplan-Meier Estimate of the Percentage of Patients Who Died From Any Cause Within 3 Years From Randomization5.2 Percentage of Patients
p-value: 0.985195% CI: [0.86, 1.16]Regression, Cox
p-value: 0.13595% CI: [0.76, 1.04]Regression, Cox
Secondary

Kaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death) Within 3 Years From Randomization

Participants with CV death. If no event, censoring occurs at the earliest of the efficacy cut-off date 14 Sep 2014, withdrawal of consent, non-CV death or at the last time point of complete clinical event assessment. Events were adjudicated by a blinded endpoint committee. The Kaplan-Meier estimate reports the percentage of patients who experienced CV Death within 3 years from randomization

Time frame: Randomization up to 47 months

Population: Intention to treat (ITT) population defined as all participants who were randomized to study treatment

ArmMeasureValue (NUMBER)
Ticagrelor 90 mgKaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death) Within 3 Years From Randomization2.9 Percentage of Patients
Ticagrelor 60 mgKaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death) Within 3 Years From Randomization2.9 Percentage of Patients
PlaceboKaplan-Meier Estimate of the Percentage of Patients Who Experienced Cardiovascular Death (CV Death) Within 3 Years From Randomization3.4 Percentage of Patients
p-value: 0.154795% CI: [0.71, 1.06]Regression, Cox
p-value: 0.067695% CI: [0.68, 1.01]Regression, Cox

Source: ClinicalTrials.gov · Data processed: Mar 13, 2026