AtherosclerosisPhase 3NCT00527943
Trial to Assess the Effects of Vorapaxar (SCH 530348; MK-5348) in Preventing Heart Attack and Stroke in Particpants With Acute Coronary Syndrome (TRA•CER) (Study P04736)
A Phase 3 study testing Vorapaxar in people with Atherosclerosis and Myocardial Ischemia, run by Merck Sharp & Dohme LLC.
Trial summary
The study is designed to determine whether vorapaxar, when added to the existing standard of care (eg, aspirin, clopidogrel) for preventing heart attack and stroke in patients with acute coronary syndrome, will yield additional benefit over the existing standard of care in preventing heart attack and stroke. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Atherosclerosis, Myocardial Ischemia, Myocardial Infarction
- What is being tested?
- Vorapaxar
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 12,944 participants
- Where
- No sites listed yet
- Study dates
- 1 Dec 2007to 1 Jul 2011
- Phase
- Phase 3
- 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
- Men and women at least 18 years old with current clinical manifestation of non-ST-segment-elevation myocardial infarction (heart attack) according to the following three criteria:
- current symptoms of cardiac ischemia (chest pain leading to cardiac ischemia or heart attack)
- AND
- either of the following:
- concurrent elevation of troponin I or T, or of creatine kinase - myocardial band (CK-MB) to a level above the upper limit of normal, OR
- concurrent appropriate electrocardiographic evidence
Show all 12Show fewer
- AND
- any one (or more) of the following:
- age >= 55 years
- documented history of prior heart attack or coronary revascularization (eg, angioplasty [PCI], coronary artery replacement [CABG])
- diabetes (documented use of insulin or oral hypoglycemic[s])
- documented history of peripheral arterial disease
Who cannot join
- history of intracranial hemorrhage or of central nervous system (CNS) surgery, tumor, or aneurysm
- any bleeding disorder or abnormality
- sustained severe hypertension or valvular heart disease
- current or recent platelet count <100,000 mm^3
- planned or ongoing treatment with a blood thinning medication
- pregnancy
- any significant medical or physiological condition or abnormality that could put the subject at increased risk or limit the subject's ability to participate for the duration of the study
About this study
Official title: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety and Efficacy of SCH 530348 in Addition to Standard of Care in Subjects With Acute Coronary Syndrome: Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome (TRA•CER)
The study is designed to determine whether vorapaxar, when added to the existing standard of care (eg, aspirin, clopidogrel) for preventing heart attack and stroke in patients with acute coronary syndrome, will yield additional benefit over the existing standard of care in preventing heart attack and stroke.
The study is also designed to assess risk of bleeding with vorapaxar added to the standard of care versus the standard of care alone.
- Conditions
- Atherosclerosis, Myocardial Ischemia, Myocardial Infarction
- Being tested
- Vorapaxar, Placebo
- Medical subject headings
- Atherosclerosis, Myocardial Ischemia, Myocardial Infarction
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
VorapaxarDrug
Also called SCH 530348, MK-5348
oral tablets; 40-mg loading dose on first day, followed by 2.5 mg once daily for at least 1 year
PlaceboDrug
oral tablets; matching placebo for vorapaxar; loading and maintenance dosing; once daily for at least 1 year
| Study group | Role | What they receive |
|---|---|---|
| Placebo | Placebo comparator | Loading oral dose of one 40 mg vorapaxar placebo tablet on Day 1, then one 2.5 mg vorapaxar placebo tablet daily, orally for at least 1 year in addition to current treatment of acute coronary syndrome, which will be continued to be administered as per current stand of care. Receives: Drug: Placebo |
| Vorapaxar | Experimental | Loading oral dose of one 40 mg vorapaxar tablet on Day 1, then one 2.5 mg vorapaxar tablet daily, orally for at least 1 year in addition to current treatment of acute coronary syndrome, which will be continued to be administered as per current stand of care. Receives: Drug: Vorapaxar |
What is being measured
The primary outcome is the main question the study is designed to answer.
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Cardiovascular Death, Myocardial Infarction, Stroke, Recurrent Ischemia With Re-hospitalization, and/or Urgent Coronary Revascularization Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: cardiovascular (CV) death, myocardial infarction (MI), stroke, recurrent ischemia with re-hospitalization (RIR), and/or urgent coronary revascularization (UCR). A Clinical Endpoints Committee (CEC) reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced at least 1 of the components of the primary composite efficacy endpoint within 2 years from randomization.
Measured: Up to 2 years
Secondary outcomes (13)
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Cardiovascular Death, Myocardial Infarction, and/or Stroke Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: cardiovascular (CV) death, myocardial infarction (MI), and/or stroke. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced at least 1 of the components of the secondary composite efficacy endpoint within 2 years from randomization.
Measured: up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Met Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Arteries (GUSTO) Moderate or Severe Bleeding Criteria Within 2 Years From Randomization
Adverse events were categorized as "bleeding events" if the intensity of the event was other or more than would be normally expected in the given situation (eg, mild nosebleed in a person who does not normally have nosebleeds, greater bruising than expected for a given injury, greater volume of blood loss than expected for a given procedure). The investigator graded the intensity of bleeding events according to the GUSTO cooperative group criteria as follows: Mild , Moderate or Severe and the grading was adjudicated by the CEC. The Kaplan-Meier estimate reports the percentage of participants who experienced GUSTO moderate or severe bleeding within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Clinically Significant Bleeding Within 2 Years From Randomization
Adverse events were categorized as "bleeding events" if the intensity of the event was other or more than would be normally expected in the given situation (eg, mild nosebleed in a person who does not normally have nosebleeds, greater bruising than expected for a given injury, greater volume of blood loss than expected for a given procedure). The investigator graded the intensity of bleeding events according to the Thrombolysis in Myocardial Infarction (TIMI) Study Group criteria as major, minor or other. "Clinically Significant Bleeding" was defined as the composite of TIMI Major bleeding, TIMI Minor bleeding, or bleeding that required unplanned medical or surgical treatment or unplanned laboratory evaluation even if it did not meet the criteria for TIMI major or minor bleeding. The Kaplan-Meier estimate reports the percentage of participants who experienced clinically significant bleeding within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced CV Death, MI, Stroke, or UCR Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: CV death, MI, stroke, or UCR. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced CV death, MI, stroke, or UCR within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced CV Death or MI Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: CV death or MI. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced CV death or MI within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced All-cause Death, MI, Stroke, RIR, or UCR Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: all-cause death, MI, stroke, RIR, or UCR. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). The Kaplan-Meier estimate reports the percentage of participants who experienced all-cause death, MI, stroke, RIR, or UCR within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced All-cause Death, MI, Stroke, or UCR Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: all-cause death, MI, stroke, or UCR. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). The Kaplan-Meier estimate reports the percentage of participants who experienced all-cause Death, MI, stroke, or UCR I within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced CV Death Within 2 Years From Randomization
The time (in days) from study start to the CV death (if reported) was recorded. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced CV death within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced an MI Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of an MI was recorded. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced an MI within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced RIR Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of RIR was recorded. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced RIR within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced UCR Within 2 Years From Randomization
The time (in days) from study start to the first occurrence of UCR was recorded. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced UCR within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Died From Any Cause Within 2 Years From Randomization
The time (in days) from study start to death from any cause was recorded. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). The Kaplan-Meier estimate reports the percentage of participants who died from any cause within 2 years from randomization.
Measured: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced a Stroke Within 2 Years From Randomization
The time (in days) from study start to first experience of a stroke was recorded. A CEC reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced a stroke within 2 years from randomization.
Measured: Up to 2 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Sep 2007 (estimated)
- Study start1 Dec 2007
- Primary completion1 Jul 2011
- Study completion1 Jul 2011
Why it stopped: The trial was terminated at the request of the Data and Safety Monitoring Board.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for AtherosclerosisStudies of the same condition, open and under way.
- More trials run by Merck Sharp & Dohme LLCThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 3
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 12,944 participants (actual)
Sponsor and investigators
- Lead sponsor
- Merck Sharp & Dohme LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Duke Clinical Research Institute
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00527943
- Sponsor's protocol ID
- P04736
- Other IDs
- TRA•CER, 2006-002809-31, MK-5348-014
- Status last verified
- Aug 2018
- First submitted
- 7 Sep 2007
- Last updated
- 21 Sep 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- Individual data sharing
- Yes: https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf
Publications
Storey RF, Kotha J, Smyth SS, Moliterno DJ, Rorick TL, Moccetti T, Valgimigli M, Dery JP, Cornel JH, Thomas GS, Huber K, Harrington RA, Hord E, Judge HM, Chen E, Strony J, Mahaffey KW, Tricoci P, Becker RC, Jennings LK. Effects of vorapaxar on platelet reactivity and biomarker expression in non-ST-elevation acute coronary syndromes. The TRACER Pharmacodynamic Substudy. Thromb Haemost. 2014 May 5;111(5):883-91. doi: 10.1160/TH13-07-0624. Epub 2014 Jan 9.
PubMed 24402559Valgimigli M, Tricoci P, Huang Z, Aylward PE, Armstrong PW, Van de Werf F, Leonardi S, White HD, Widimsky P, Harrington RA, Cequier A, Chen E, Lokhnygina Y, Wallentin L, Strony J, Mahaffey KW, Moliterno DJ. Usefulness and safety of vorapaxar in patients with non-ST-segment elevation acute coronary syndrome undergoing percutaneous coronary intervention (from the TRACER Trial). Am J Cardiol. 2014 Sep 1;114(5):665-73. doi: 10.1016/j.amjcard.2014.05.054. Epub 2014 Jun 18.
PubMed 25129064Batra G, Lindback J, Becker RC, Harrington RA, Held C, James SK, Kempf T, Lopes RD, Mahaffey KW, Steg PG, Storey RF, Swahn E, Wollert KC, Siegbahn A, Wallentin L. Biomarker-Based Prediction of Recurrent Ischemic Events in Patients With Acute Coronary Syndromes. J Am Coll Cardiol. 2022 Nov 1;80(18):1735-1747. doi: 10.1016/j.jacc.2022.08.767.
PubMed 36302586Natale P, Palmer SC, Saglimbene VM, Ruospo M, Razavian M, Craig JC, Jardine MJ, Webster AC, Strippoli GF. Antiplatelet agents for chronic kidney disease. Cochrane Database Syst Rev. 2022 Feb 28;2(2):CD008834. doi: 10.1002/14651858.CD008834.pub4.
PubMed 35224730Inohara T, Pieper K, Wojdyla DM, Patel MR, Jones WS, Tricoci P, Mahaffey KW, James SK, Alexander JH, Lopes RD, Wallentin L, Ohman EM, Roe MT, Vemulapalli S. Incidence, timing, and type of first and recurrent ischemic events in patients with and without peripheral artery disease after an acute coronary syndrome. Am Heart J. 2018 Jul;201:25-32. doi: 10.1016/j.ahj.2018.03.013. Epub 2018 Mar 28.
PubMed 29910052Armaganijan LV, Alexander KP, Huang Z, Tricoci P, Held C, Van de Werf F, Armstrong PW, Aylward PE, White HD, Moliterno DJ, Wallentin L, Chen E, Harrington RA, Strony J, Mahaffey KW, Lopes RD. Effect of age on efficacy and safety of vorapaxar in patients with non-ST-segment elevation acute coronary syndrome: Insights from the Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome (TRACER) trial. Am Heart J. 2016 Aug;178:176-84. doi: 10.1016/j.ahj.2016.05.012. Epub 2016 Jun 9.
PubMed 27502866Popma CJ, Sheng S, Korjian S, Daaboul Y, Chi G, Tricoci P, Huang Z, Moliterno DJ, White HD, Van de Werf F, Harrington RA, Wallentin L, Held C, Armstrong PW, Aylward PE, Strony J, Mahaffey KW, Gibson CM. Lack of Concordance Between Local Investigators, Angiographic Core Laboratory, and Clinical Event Committee in the Assessment of Stent Thrombosis: Results From the TRACER Angiographic Substudy. Circ Cardiovasc Interv. 2016 May;9(5):e003114. doi: 10.1161/CIRCINTERVENTIONS.115.003114.
PubMed 27162212Vranckx P, White HD, Huang Z, Mahaffey KW, Armstrong PW, Van de Werf F, Moliterno DJ, Wallentin L, Held C, Aylward PE, Cornel JH, Bode C, Huber K, Nicolau JC, Ruzyllo W, Harrington RA, Tricoci P. Validation of BARC Bleeding Criteria in Patients With Acute Coronary Syndromes: The TRACER Trial. J Am Coll Cardiol. 2016 May 10;67(18):2135-2144. doi: 10.1016/j.jacc.2016.02.056.
PubMed 27151345Mahaffey KW, Hager R, Wojdyla D, White HD, Armstrong PW, Alexander JH, Tricoci P, Lopes RD, Ohman EM, Roe MT, Harrington RA, Wallentin L. Meta-analysis of intracranial hemorrhage in acute coronary syndromes: incidence, predictors, and clinical outcomes. J Am Heart Assoc. 2015 Jun 18;4(6):e001512. doi: 10.1161/JAHA.114.001512.
PubMed 26089177Bagai A, Huang Z, Lokhnygina Y, Harrington RA, Armstrong PW, Strony J, White HD, Leonardi S, Held C, Van de Werf F, Wallentin L, Tricoci P, Mahaffey KW. Magnitude of troponin elevation and long-term clinical outcomes in acute coronary syndrome patients treated with and without revascularization. Circ Cardiovasc Interv. 2015 Jun;8(6):e002314. doi: 10.1161/CIRCINTERVENTIONS.115.002314.
PubMed 26025218White HD, Huang Z, Tricoci P, Van de Werf F, Wallentin L, Lokhnygina Y, Moliterno DJ, Aylward PE, Mahaffey KW, Armstrong PW. Reduction in overall occurrences of ischemic events with vorapaxar: results from TRACER. J Am Heart Assoc. 2014 Jul 10;3(4):e001032. doi: 10.1161/JAHA.114.001032.
PubMed 25012288Whellan DJ, Tricoci P, Chen E, Huang Z, Leibowitz D, Vranckx P, Marhefka GD, Held C, Nicolau JC, Storey RF, Ruzyllo W, Huber K, Sinnaeve P, Weiss AT, Dery JP, Moliterno DJ, Van de Werf F, Aylward PE, White HD, Armstrong PW, Wallentin L, Strony J, Harrington RA, Mahaffey KW. Vorapaxar in acute coronary syndrome patients undergoing coronary artery bypass graft surgery: subgroup analysis from the TRACER trial (Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome). J Am Coll Cardiol. 2014 Mar 25;63(11):1048-57. doi: 10.1016/j.jacc.2013.10.048. Epub 2013 Nov 21.
PubMed 24211500Tricoci P, Huang Z, Held C, Moliterno DJ, Armstrong PW, Van de Werf F, White HD, Aylward PE, Wallentin L, Chen E, Lokhnygina Y, Pei J, Leonardi S, Rorick TL, Kilian AM, Jennings LH, Ambrosio G, Bode C, Cequier A, Cornel JH, Diaz R, Erkan A, Huber K, Hudson MP, Jiang L, Jukema JW, Lewis BS, Lincoff AM, Montalescot G, Nicolau JC, Ogawa H, Pfisterer M, Prieto JC, Ruzyllo W, Sinnaeve PR, Storey RF, Valgimigli M, Whellan DJ, Widimsky P, Strony J, Harrington RA, Mahaffey KW; TRACER Investigators. Thrombin-receptor antagonist vorapaxar in acute coronary syndromes. N Engl J Med. 2012 Jan 5;366(1):20-33. doi: 10.1056/NEJMoa1109719. Epub 2011 Nov 13.
PubMed 22077816TRA*CER Executive and Steering Committees. The Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome (TRA*CER) trial: study design and rationale. Am Heart J. 2009 Sep;158(3):327-334.e4. doi: 10.1016/j.ahj.2009.07.001.
PubMed 19699853
Study at a glance
From the registry record, last updated by the sponsor on 21 Sep 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety and Efficacy of SCH 530348 in Addition to Standard of Care in Subjects With Acute Coronary Syndrome: Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome (TRA•CER)
- ClinicalTrials.gov ID
- NCT00527943
- Acronym / sponsor ID
- P04736
- Conditions
- Atherosclerosis, Myocardial Ischemia, Myocardial Infarction
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: The trial was terminated at the request of the Data and Safety Monitoring Board.
- Enrolment
- 12,944 participants (actual)
- Lead sponsor
- Merck Sharp & Dohme LLCIndustry (pharma, biotech, devices)
- Collaborators
- Duke Clinical Research Institute
- Study start
- 1 Dec 2007 (actual)
- Primary completion
- 1 Jul 2011 (actual)
- Study completion
- 1 Jul 2011 (actual)
- First posted
- 11 Sep 2007 (estimated)
- Results
- Posted 9 Jun 2014
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The study is designed to determine whether vorapaxar, when added to the existing standard of care (eg, aspirin, clopidogrel) for preventing heart attack and stroke in patients with acute coronary syndrome, will yield additional benefit over the existing standard of care in preventing heart attack and stroke.
The study is also designed to assess risk of bleeding with vorapaxar added to the standard of care versus the standard of care alone.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Placebo | Placebo comparator | Drug: PlaceboLoading oral dose of one 40 mg vorapaxar placebo tablet on Day 1, then one 2.5 mg vorapaxar placebo tablet daily, orally for at least 1 year in addition to current treatment of acute coronary syndrome, which will be continued to be administered as per current stand of care. |
| Vorapaxar | Experimental | Drug: VorapaxarLoading oral dose of one 40 mg vorapaxar tablet on Day 1, then one 2.5 mg vorapaxar tablet daily, orally for at least 1 year in addition to current treatment of acute coronary syndrome, which will be continued to be administered as per current stand of care. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (12 listed)
- Men and women at least 18 years old with current clinical manifestation of non-ST-segment-elevation myocardial infarction (heart attack) according to the following three criteria:
- current symptoms of cardiac ischemia (chest pain leading to cardiac ischemia or heart attack)
- AND
- either of the following:
- AND
Key exclusion criteria (7 listed)
- history of intracranial hemorrhage or of central nervous system (CNS) surgery, tumor, or aneurysm
- any bleeding disorder or abnormality
- sustained severe hypertension or valvular heart disease
- current or recent platelet count <100,000 mm^3
- planned or ongoing treatment with a blood thinning medication
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| VorapaxarAlso: SCH 530348, MK-5348oral tablets; 40-mg loading dose on first day, followed by 2.5 mg once daily for at least 1 year | Drug | Vorapaxar |
| Placebooral tablets; matching placebo for vorapaxar; loading and maintenance dosing; once daily for at least 1 year | Drug | Placebo |
Primary outcome
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Cardiovascular Death, Myocardial Infarction, Stroke, Recurrent Ischemia With Re-hospitalization, and/or Urgent Coronary Revascularization Within 2 Years From Randomization
Time frame: Up to 2 years
The time (in days) from study start to the first occurrence of any of the following clinical outcomes was recorded: cardiovascular (CV) death, myocardial infarction (MI), stroke, recurrent ischemia with re-hospitalization (RIR), and/or urgent coronary revascularization (UCR). A Clinical Endpoints Committee (CEC) reviewed and adjudicated each suspected efficacy endpoint event while blinded to treatment. Participants who did not have any endpoint event until last visit or participants who were lost to follow-up and had no event were censored at the time of last available information (last study visit). If a participant had a fatal event that was not part of a specific endpoint for analysis, they were censored at the time of death. The Kaplan-Meier estimate reports the percentage of participants who experienced at least 1 of the components of the primary composite efficacy endpoint within 2 years from randomization.
13 secondary outcomes
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Cardiovascular Death, Myocardial Infarction, and/or Stroke Within 2 Years From Randomization
Time frame: up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Met Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Arteries (GUSTO) Moderate or Severe Bleeding Criteria Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Clinically Significant Bleeding Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced CV Death, MI, Stroke, or UCR Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced CV Death or MI Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced All-cause Death, MI, Stroke, RIR, or UCR Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced All-cause Death, MI, Stroke, or UCR Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced CV Death Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced an MI Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced RIR Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced UCR Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Died From Any Cause Within 2 Years From Randomization
Time frame: Up to 2 years
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced a Stroke Within 2 Years From Randomization
Time frame: Up to 2 years
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Sep 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Results publication: PubMed 24402559Storey RF, Kotha J, Smyth SS, Moliterno DJ, Rorick TL, Moccetti T, Valgimigli M, Dery JP, Cornel JH, Thomas GS, Huber K, Harrington RA, Hord E, Judge HM, Chen E, Strony J, Mahaffey KW, Tricoci P, Becker RC, Jennings LK. Effects of vorapaxar on platelet reactivity and biomarker expression in non-ST-elevation acute coronary syndromes. The TRACER Pharmacodynamic Substudy. Thromb Haemost. 2014 May 5;111(5):883-91. doi: 10.1160/TH13-07-0624. Epub 2014 Jan 9.
- Results publication: PubMed 25129064Valgimigli M, Tricoci P, Huang Z, Aylward PE, Armstrong PW, Van de Werf F, Leonardi S, White HD, Widimsky P, Harrington RA, Cequier A, Chen E, Lokhnygina Y, Wallentin L, Strony J, Mahaffey KW, Moliterno DJ. Usefulness and safety of vorapaxar in patients with non-ST-segment elevation acute coronary syndrome undergoing percutaneous coronary intervention (from the TRACER Trial). Am J Cardiol. 2014 Sep 1;114(5):665-73. doi: 10.1016/j.amjcard.2014.05.054. Epub 2014 Jun 18.
- Derived from this study: PubMed 36302586Batra G, Lindback J, Becker RC, Harrington RA, Held C, James SK, Kempf T, Lopes RD, Mahaffey KW, Steg PG, Storey RF, Swahn E, Wollert KC, Siegbahn A, Wallentin L. Biomarker-Based Prediction of Recurrent Ischemic Events in Patients With Acute Coronary Syndromes. J Am Coll Cardiol. 2022 Nov 1;80(18):1735-1747. doi: 10.1016/j.jacc.2022.08.767.
- Derived from this study: PubMed 35224730Natale P, Palmer SC, Saglimbene VM, Ruospo M, Razavian M, Craig JC, Jardine MJ, Webster AC, Strippoli GF. Antiplatelet agents for chronic kidney disease. Cochrane Database Syst Rev. 2022 Feb 28;2(2):CD008834. doi: 10.1002/14651858.CD008834.pub4.
- Derived from this study: PubMed 29910052Inohara T, Pieper K, Wojdyla DM, Patel MR, Jones WS, Tricoci P, Mahaffey KW, James SK, Alexander JH, Lopes RD, Wallentin L, Ohman EM, Roe MT, Vemulapalli S. Incidence, timing, and type of first and recurrent ischemic events in patients with and without peripheral artery disease after an acute coronary syndrome. Am Heart J. 2018 Jul;201:25-32. doi: 10.1016/j.ahj.2018.03.013. Epub 2018 Mar 28.
- Derived from this study: PubMed 27502866Armaganijan LV, Alexander KP, Huang Z, Tricoci P, Held C, Van de Werf F, Armstrong PW, Aylward PE, White HD, Moliterno DJ, Wallentin L, Chen E, Harrington RA, Strony J, Mahaffey KW, Lopes RD. Effect of age on efficacy and safety of vorapaxar in patients with non-ST-segment elevation acute coronary syndrome: Insights from the Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome (TRACER) trial. Am Heart J. 2016 Aug;178:176-84. doi: 10.1016/j.ahj.2016.05.012. Epub 2016 Jun 9.
- Derived from this study: PubMed 27162212Popma CJ, Sheng S, Korjian S, Daaboul Y, Chi G, Tricoci P, Huang Z, Moliterno DJ, White HD, Van de Werf F, Harrington RA, Wallentin L, Held C, Armstrong PW, Aylward PE, Strony J, Mahaffey KW, Gibson CM. Lack of Concordance Between Local Investigators, Angiographic Core Laboratory, and Clinical Event Committee in the Assessment of Stent Thrombosis: Results From the TRACER Angiographic Substudy. Circ Cardiovasc Interv. 2016 May;9(5):e003114. doi: 10.1161/CIRCINTERVENTIONS.115.003114.
- Derived from this study: PubMed 27151345Vranckx P, White HD, Huang Z, Mahaffey KW, Armstrong PW, Van de Werf F, Moliterno DJ, Wallentin L, Held C, Aylward PE, Cornel JH, Bode C, Huber K, Nicolau JC, Ruzyllo W, Harrington RA, Tricoci P. Validation of BARC Bleeding Criteria in Patients With Acute Coronary Syndromes: The TRACER Trial. J Am Coll Cardiol. 2016 May 10;67(18):2135-2144. doi: 10.1016/j.jacc.2016.02.056.
- Derived from this study: PubMed 26089177Mahaffey KW, Hager R, Wojdyla D, White HD, Armstrong PW, Alexander JH, Tricoci P, Lopes RD, Ohman EM, Roe MT, Harrington RA, Wallentin L. Meta-analysis of intracranial hemorrhage in acute coronary syndromes: incidence, predictors, and clinical outcomes. J Am Heart Assoc. 2015 Jun 18;4(6):e001512. doi: 10.1161/JAHA.114.001512.
- Derived from this study: PubMed 26025218Bagai A, Huang Z, Lokhnygina Y, Harrington RA, Armstrong PW, Strony J, White HD, Leonardi S, Held C, Van de Werf F, Wallentin L, Tricoci P, Mahaffey KW. Magnitude of troponin elevation and long-term clinical outcomes in acute coronary syndrome patients treated with and without revascularization. Circ Cardiovasc Interv. 2015 Jun;8(6):e002314. doi: 10.1161/CIRCINTERVENTIONS.115.002314.
- Derived from this study: PubMed 25012288White HD, Huang Z, Tricoci P, Van de Werf F, Wallentin L, Lokhnygina Y, Moliterno DJ, Aylward PE, Mahaffey KW, Armstrong PW. Reduction in overall occurrences of ischemic events with vorapaxar: results from TRACER. J Am Heart Assoc. 2014 Jul 10;3(4):e001032. doi: 10.1161/JAHA.114.001032.
- Derived from this study: PubMed 24211500Whellan DJ, Tricoci P, Chen E, Huang Z, Leibowitz D, Vranckx P, Marhefka GD, Held C, Nicolau JC, Storey RF, Ruzyllo W, Huber K, Sinnaeve P, Weiss AT, Dery JP, Moliterno DJ, Van de Werf F, Aylward PE, White HD, Armstrong PW, Wallentin L, Strony J, Harrington RA, Mahaffey KW. Vorapaxar in acute coronary syndrome patients undergoing coronary artery bypass graft surgery: subgroup analysis from the TRACER trial (Thrombin Receptor Antagonist for Clinical Event Reduction in Acute Coronary Syndrome). J Am Coll Cardiol. 2014 Mar 25;63(11):1048-57. doi: 10.1016/j.jacc.2013.10.048. Epub 2013 Nov 21.
- Individual participant dataSharing planned: Yes. https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Vorapaxar in people with Atherosclerosis and Myocardial Ischemia, run by Merck Sharp & Dohme LLC.
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 12 inclusion and 7 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: stopped early, as of the sponsor's last update on 21 Sep 2018. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
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 9 Jun 2014). 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?
Kaplan-Meier Estimate of the Percentage of Participants Who Experienced Cardiovascular Death, Myocardial Infarction, Stroke, Recurrent Ischemia With Re-hospitalization, and/or Urgent Coronary Revascularization Within 2 Years From Randomization (time frame: Up to 2 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00527943, which also lists 14 linked publications.
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 21 Sep 2018; AzTrials last refreshed its copy on 8 Nov 2026.