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A Comparison of Antiplatelet Therapies in Asian Subjects With Acute Coronary Syndrome

22. september 2011 opdateret af: Eli Lilly and Company

A Comparison of Platelet Inhibition Following Prasugrel or Clopidogrel Administration in Asian Acute Coronary Syndrome Subjects Who Are to Undergo Percutaneous Coronary Intervention

The study will compare the safety and efficacy of prasugrel, administered at different doses with clopidogrel in the treatment of Asian participants with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention.

Studieoversigt

Status

Afsluttet

Betingelser

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

720

Fase

  • Fase 3

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

      • Beijing, Kina, 100853
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Guang Zhou, Kina, 510080
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Hangzhou, Kina, 310009
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Nanjing, Kina, 210008
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Shanghai, Kina, 200433
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Shenyang, Kina, 110016
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Wenzhou, Kina, 325027
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Xi'An, Kina, 710061
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Daegu, Korea, Republikken, 700-721
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Kwang Ju, Korea, Republikken, 501-757
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Seongnam-Si, Korea, Republikken, 463-707
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Seoul, Korea, Republikken, 135 720
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Suwon-City, Korea, Republikken, 442-721
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Taichung, Taiwan, 404
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Taichung City, Taiwan, 40201
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Taipei, Taiwan, 112
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Tao-Yuan, Taiwan, 333
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Bangkok, Thailand, 10400
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.
      • Chiang Mai, Thailand, 50200
        • For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST), or speak with your personal physician.

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • A person who has been diagnosed with acute coronary syndrome (ACS) and is to undergo a percutaneous coronary intervention (PCI)
  • A person who is of East or Southeast Asian descent
  • A person who is of the legal age of 18 (or age 21 in Singapore) and is mentally competent to provide a signed written informed consent before entering the study
  • If a woman is of childbearing potential, she must test negative for pregnancy and agree to use a reliable method of birth control

Exclusion Criteria:

  • A person who has a severe cardiovascular condition such as cardiogenic shock at the time of randomization, ventricular arrhythmias or congestive heart failure
  • A person who is at an increased risk of bleeding (e.g. active internal bleeding, history of bleeding disorder, recent fibrinolytic therapy before randomization into the study)
  • A person who has prior history of any one of the following: ischemic or hemorrhagic stroke; intracranial neoplasm, arteriovenous malformation, or aneurysm; prior history of transient ischemic attack (TIA)
  • A person who needs to take other antiplatelet therapy other than Aspirin for the duration of the study
  • A person who receives daily treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) or cyclooxygenase-2 (COX2) inhibitors that cannot be discontinued
  • A person who has a severe liver disease, such as cirrhosis
  • A person who has a condition such as alcoholism, mental illness, or drug dependence

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Prasugrel 60/10 Primary
Loading dose 60 mg followed by maintenance dose 10 mg/day
Oral, daily, 90 days
Andre navne:
  • Effektiv
  • LY640315
  • CS-747
Eksperimentel: Prasugrel 30/7.5 Primary
Loading dose 30 mg followed by maintenance dose 7.5 mg/day
Oral, daily, 90 days
Andre navne:
  • Effektiv
  • LY640315
  • CS-747
Eksperimentel: Prasugrel 30/5 Primary
Loading dose 30 mg followed by maintenance dose 5 mg/day
Oral, daily, 90 days
Andre navne:
  • Effektiv
  • LY640315
  • CS-747
Aktiv komparator: Clopidogrel 300/75 Primary
Loading dose 300 mg followed by maintenance dose 75 mg/day
Oral, daily, 90 days
Andre navne:
  • Plavix
Eksperimentel: Prasugrel 30/5 Low Weight/Elderly
Loading dose 30 mg followed by maintenance dose 5 mg/day
Oral, daily, 90 days
Andre navne:
  • Effektiv
  • LY640315
  • CS-747
Aktiv komparator: Clopidogrel 300/75 Low Weight/Elderly
Loading dose 300 mg followed by maintenance dose 75 mg/day
Oral, daily, 90 days
Andre navne:
  • Plavix

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Adenosine Diphosphate (ADP)-Induced P2Y12 Receptor-mediated Platelet Aggregation (P2Y12 Reaction Units; PRU) Using the Accumetrics VerifyNow (VN) P2Y12 Assay at 4 Hours Post-Loading Dose (LD) in Primary Cohort (≥60 kg and <75 Years)
Tidsramme: At 4 hours following LD administration

ADP-induced PRU represents the rate and extent of ADP-stimulated platelet aggregation and serves as a biomarker of clinical efficacy, with lower values indicating greater P2Y12 platelet inhibition.

Observed PRU values are presented with statistical comparisons of difference in least squares mean (LS mean) PRU values between prasugrel and clopidogrel.

Efficacy analyses are analyzed and presented separately for the LD and maintenance dose (MD) phase.

At 4 hours following LD administration
Adenosine Diphosphate (ADP)-Induced P2Y12 Reaction Units (PRU) Using the Accumetrics VerifyNow (VN) P2Y12 Assay at 30 Days During Maintenance Dose (MD) Administration in Primary Cohort
Tidsramme: At 30 days during MD therapy

Efficacy analyses are analyzed and presented separately for the loading dose (LD) and MD phase. This primary outcome analysis compares PRU for the 3 prasugrel MDs (10 mg, 7.5 mg, and 5 mg) with the clopidogrel 75-mg MD at 30 days post-MD in the primary cohort (participants who weighed ≥60 kg and were <75 years).

ADP-induced PRU serves as a biomarker of clinical efficacy, with lower values indicating greater P2Y12 platelet inhibition.

Observed PRU values are presented with statistical comparisons of LS mean difference between prasugrel and clopidogrel.

At 30 days during MD therapy

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Adenosine Diphosphate (ADP)-Induced P2Y12 Reaction Units (PRU) Using the Accumetrics VerifyNow (VN) P2Y12 Assay at 30 Minutes, 2 and 4 Hours Post-Loading Dose (LD) in Primary (≥60 kg and <75 Years) and Low Weight/Elderly (<60 kg or ≥75 Years) Cohorts.
Tidsramme: At 30 minutes, 2 hours, and 4 hours following LD administration

Efficacy analyses analyzed and presented separately for LD and maintenance dose (MD) phase. Analysis compares PRU for prasugrel LDs (30 mg and 60 mg) with clopidogrel 300-mg LD at 30 minutes post-LD.

Data for Primary Cohort at 4 hours post-LD, already presented in first Primary Outcome Measure, are also presented here.

ADP-induced PRU serves as biomarker of clinical efficacy, with lower values indicating greater P2Y12 platelet inhibition.

Observed PRU values presented with statistical comparisons of least-squares mean (LS mean) difference between prasugrel and clopidogrel.

At 30 minutes, 2 hours, and 4 hours following LD administration
Adenosine Diphosphate (ADP)-Induced P2Y12 Reaction Units (PRU) Using the Accumetrics VerifyNow (VN) P2Y12 Assay at During Maintenance Dose (MD) Phase at 30 Days and 90 Days in Primary Cohort and Low Weight/Elderly Cohort
Tidsramme: At 30 Days and 90 days during MD therapy

Efficacy analyses analyzed and presented separately for loading dose (LD) and MD phase. Analysis compares PRU for 3 prasugrel MDs (10 mg, 7.5 mg, and 5 mg) with clopidogrel 75-mg MD at 30 days post-MD.

Data for Primary Cohort at 30 days post-LD, already presented in second Primary Outcome Measure, are also presented here.

ADP-induced PRU serves as a biomarker of clinical efficacy, with lower values indicating greater P2Y12 platelet inhibition.

Observed PRU values are presented with statistical comparisons of least squares (LS) mean difference between prasugrel and clopidogrel.

At 30 Days and 90 days during MD therapy
Percent Inhibition of Adenosine Diphosphate (ADP)-Induced P2Y12 Reaction Units (PRU) at 30 Minutes, 2 Hours, and 4 Hours Post-Loading Dose (LD) in Primary in Primary Cohort and Low Weight/Elderly Cohort
Tidsramme: 30 minutes, 2 hours, and 4 hours following LD administration
A higher percentage (percent inhibition least squares mean [LS mean]) represents greater platelet inhibition.
30 minutes, 2 hours, and 4 hours following LD administration
Percent Inhibition of Adenosine Diphosphate (ADP)-Induced P2Y12 Reaction Units (PRU) During the Maintenance Dose (MD) Phase at 30 Days and 90 Days in Primary Cohort and Low Weight/Elderly Cohort
Tidsramme: 30 days and at 90 days during MD therapy
A higher percentage (percent inhibition least squares mean [LS mean]) represents greater platelet inhibition.
30 days and at 90 days during MD therapy
Summary of Myocardial Infarction (MI), Stroke, Stent Thrombosis and Urgent Target Vessel Revascularization (UTVR) in Primary Cohort and Low Weight/Elderly Cohort
Tidsramme: Randomization through end of study (90 days)

Nonfatal MI: American College of Cardiology (ACC) definition Nonfatal stroke: rapid onset of new, persistent neurologic deficit lasting >24 hours; classified as either ischemic or hemorrhagic based on imaging data, if available, or uncertain cause if imaging data was not available.

Stent thrombosis: defined as definite, probable, or possible, based on Academic Research Consortium definitions.

UTVR: percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) for recurrent ischemia. Revascularization must have included the vessel(s) dilated at the initial procedure

Randomization through end of study (90 days)
Risk of Cardiovascular (CV) Death, Nonfatal Myocardial Infarction (MI), or Non-fatal Stroke
Tidsramme: 30 days and 90 days

Risk was defined as the number of participants with events of CV death, nonfatal MI, or nonfatal stroke.

CV death: death caused by CV event or not clearly attributable to non-CV causes.

Nonfatal MI: per adapted American College of Cardiology definition.

Nonfatal stroke: rapid onset of new, persistent neurologic deficit lasting more than 24 hours; either ischemic or hemorrhagic based on imaging data, if available, or uncertain cause if imaging data was not available.

As a consequence of the overall low number of reported clinical events, composite endpoints were not analyzed.

30 days and 90 days
Risk of Cardiovascular (CV) Death, Nonfatal Myocardial Infarction (MI), or Urgent Target Vessel Revascularization (UTVR)
Tidsramme: 30 days and 90 days

Risk was defined as the number of participants with events of CV death, nonfatal MI, or UTVR.

UTVR: percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) for recurrent ischemia. Revascularization must have included the vessel(s) dilated at the initial procedure.

As a consequence of the overall low number of reported clinical events, composite endpoints were not analyzed.

30 days and 90 days
Risk of Cardiovascular (CV) Death, Nonfatal Myocardial Infarction (MI), Nonfatal Stroke, or Recurrent Myocardial Ischemia Requiring Hospitalization
Tidsramme: 30 days and 90 days

Risk was defined as the number of events of CV death, nonfatal MI, nonfatal stroke or recurrent myocardial ischemia requiring hospitalization.

Recurrent myocardial ischemia requiring hospitalization: rehospitalization for symptoms of myocardial ischemia at rest with either new ST-segment deviation ≥1 mm, or performance of a coronary revascularization procedure percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) during the same hospital stay.

As a consequence of the overall low number of reported clinical events, composite endpoints were not analyzed.

30 days and 90 days
Risk of Cardiovascular (CV) Death, Nonfatal Myocardial Infarction (MI), Nonfatal Stroke, Urgent Target Vessel Revascularization (UTVR), or Recurrent Myocardial Ischemia Requiring Hospitalization (Analyzed Individually)
Tidsramme: 30 days and 90 days
Risk was defined as the number of participants with events of CV death, nonfatal MI, nonfatal stroke, UTVR, or recurrent myocardial ischemia requiring hospitalization.
30 days and 90 days
Risk of Definite or Probable Stent Thrombosis Per ARC (Academic Research Consortium) Definition
Tidsramme: 30 days and 90 days

Risk was defined as the number of participants with events of definite or probable stent thrombosis.

As a consequence of the overall low number of reported clinical events, composite endpoints were not analyzed.

30 days and 90 days
Risk of Definite, Probable, or Possible Stent Thrombosis Per Academic Research Consortium (ARC) Definition
Tidsramme: 90 days

Risk was defined as the number of participants with events of definite, probable, or possible stent thrombosis.

As a consequence of the overall low number of reported clinical events, composite endpoints were not analyzed.

90 days
Risk of All-cause Death in Primary Cohort and Low Weight/Elderly Cohort
Tidsramme: Randomization through end of study (90 days)
Risk was defined as the number of participants with events of all-cause death.
Randomization through end of study (90 days)
Incidence of Non-coronary Artery Bypass Graft (CABG) Related Thrombolysis in Myocardial Infarction (TIMI) Life-threatening (a Subset of Non-CABG-related TIMI Major Bleeding), Major, Minor, and Minimal Bleeding
Tidsramme: Randomization through end of study (90 days)

Bleeding events were classified and analyzed in accordance with the TIMI criteria definitions.

Major bleeding: any intracranial hemorrhage (ICR) OR any clinically overt bleeding (including bleeding evident on imaging studies) associated with a fall in hemoglobin (Hgb) of ≥5 grams/deciliter (gm/dL) from baseline.

Minor bleeding: any clinically overt bleeding associated with a fall in Hgb of ≥3 but <5 gm/dL from baseline.

Insignificant bleeding: any bleeding event that does not meet criteria for a Major or Minor bleed.

Randomization through end of study (90 days)
Incidence of CABG-related TIMI Major or Minor Bleeding.
Tidsramme: Randomization through end of study (90 days)
Randomization through end of study (90 days)
Inpatient Healthcare Resource Utilization
Tidsramme: Initial hospitalization, 30 days, 90 days
Healthcare resource utilization data were modeled from historical analyses to determine initial hospitalization costs, total 30-day medical care costs, and total 90-day medical care costs.
Initial hospitalization, 30 days, 90 days
Genetic Variation Related to Drug Metabolism and Transport Substudy Result Summary
Tidsramme: Baseline to 4 hours post-loading dose (LD), 30 days and 90 days during maintenance dose (MD) phase

The primary hypothesis for the genetics substudy was that CYP2C19 genetic variation has a significant effect on pharmacodynamic (PD) response to clopidogrel but not on PD response to prasugrel per change in PRU as measured by the Accumetrics VerifyNow P2Y12 device.

Participants were classified by CYP2C19 genotype into predicted metabolic phenotypes according to literature-based functional predictions. These classifications were clustered into 2 groups: extensive metabolizer (EM) and reduced metabolizer (RM).

A higher value for change in PRU indicates a greater level of platelet inhibition.

Baseline to 4 hours post-loading dose (LD), 30 days and 90 days during maintenance dose (MD) phase
Risk of CV Death, Nonfatal MI, Nonfatal Stroke, UTVR, or Recurrent Myocardial Ischemia Requiring Hospitalization (Analyzed Individually)
Tidsramme: 30 days and 90 days
Risk of Cardiovascular (CV) Death, Nonfatal Myocardial Infarction (MI), Nonfatal Stroke, Urgent Target Vessel Revascularization (UTVR), or Recurrent Myocardial Ischemia Requiring Hospitalization (Analyzed Individually)
30 days and 90 days

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Samarbejdspartnere

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. februar 2009

Primær færdiggørelse (Faktiske)

1. juni 2010

Studieafslutning (Faktiske)

1. juni 2010

Datoer for studieregistrering

Først indsendt

27. januar 2009

Først indsendt, der opfyldte QC-kriterier

27. januar 2009

Først opslået (Skøn)

28. januar 2009

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

2. november 2011

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

22. september 2011

Sidst verificeret

1. september 2011

Mere information

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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