Prasugrel Versus Clopidogrel in Acute Coronary Syndrome (ACS) Undergoing Percutaneous Coronary Intervention (PCI)
Recruitment status was Recruiting
|First Received Date ICMJE||March 16, 2010|
|Last Updated Date||April 15, 2011|
|Start Date ICMJE||August 2009|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
||The primary endpoint is the rate of drug resistance at time of index intervention. [ Time Frame: Routinely, platelet aggregation is evaluated ideally daily up to 96 hours after index event. ] [ Designated as safety issue: Yes ]
Platelet aggregation is determined by light transmission and impedance aggregometry as previoulsy described (Boris T. Ivandic, Philipp Schlick, Peter Staritz, Kerstin Kurz, Hugo A. Katus and Evangelos Giannitsis: Determination of Clopidogrel Resistance by Whole Blood Platelet Aggregometry and Inhibitors of the P2Y12 Receptor; Clinical Chemistry 52: 383-388, 2006)
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||Complete list of historical versions of study NCT01090336 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE
||Secondary endpoint is the reduction of myocardial infarct size determined by post-interventional increase of high sensitive TnT (TnT hs). [ Time Frame: Routinely, ideally daily until 96h after index event. ] [ Designated as safety issue: Yes ]|
|Original Secondary Outcome Measures ICMJE||Same as current|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Prasugrel Versus Clopidogrel in Acute Coronary Syndrome (ACS) Undergoing Percutaneous Coronary Intervention (PCI)|
|Official Title ICMJE||Prevalence of Inadequate Platelet Inhibition After Oral Loading With Prasugrel/Clopidogrel in Patients With an Acute Coronary Syndrome Undergoing Early PCI|
Background: Both prasugrel and clopidogrel are prescribed drugs which compete as platelet inhibitors in patients with acute coronary syndrome (ACS). Whether rates of drug resistance/hyporesponsiveness are lower with prasugrel and whether more consistent and earlier onset of platelet inhibition may reduce infarct size in patients with ACS undergoing early PCI remains, at present, unknown.
Study design/study population: This trial is a prospective, open-label, single centre observational trial. Patients receive either prasugrel (60mg) or clopidogrel (600mg) at the discretion of the attending cardiologist. Patients with exclusion criteria for prasugrel will be excluded for clopidogrel as well. The study population includes 80 subjects with moderate to high-risk ACS, ie patients with unstable angina (UA) and non-ST-segment elevation MI (NSTEMI) and TIMI risk score of 3 or higher, within 72 hours after onset of symptoms. In all patients early PCI is planned.
Study objective/endpoint/methods: The primary objective of this trial is to evaluate whether rates of hyporesponsiveness are lower with prasugrel and whether more consistent and earlier onset of platelet inhibition may reduce infarct size in ACS in patients undergoing early PCI.
The primary endpoint is the rate of drug resistance at time of index intervention. Optical and impedance aggregometry using ADP (5 and 20 μM) and collagen (1 μg/ml) as platelet agonists is used to measure platelet aggregation. Addition of the specific antagonists aspirin and mesamp to the probe is used to discriminate between pharmacodynamic and pharmacokinetic drug resistance.
Secondary endpoint is the reduction of myocardial infarct size determined by post-interventional increase of high sensitive TnT (TnT hs) during the days following the index event reflecting earlier, more effective and more consistent inhibition of platelet function.
Tertiary endpoint is the composite clinical endpoint of cardiovascular death, nonfatal MI, or stroke and urgent target vessel revascularization during hospitalization and after 6 and 12 months.
Safety endpoint is any TIMI major or minor bleeding during hospital stay and after 6 and 12 months including intracranial and life-threatening bleeding.
|Study Type ICMJE||Observational|
|Study Design ICMJE||Time Perspective: Prospective|
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Probability Sample|
The study population includes 80 subjects with moderate to high-risk ACS, ie patients with unstable angina (UA) and non-ST-segment elevation MI (NSTEMI) and TIMI risk score of 3 or higher, within 72 hours after onset of symptoms. In all patients early PCI is planned. Patients with exclusion criteria for prasugrel will be excluded for clopidogrel as well.
|Condition ICMJE||Patients With Acute Coronary Syndrome|
|Intervention ICMJE||Not Provided|
|Study Group/Cohort (s)||
|Publications *||Ivandic BT, Schlick P, Staritz P, Kurz K, Katus HA, Giannitsis E. Determination of clopidogrel resistance by whole blood platelet aggregometry and inhibitors of the P2Y12 receptor. Clin Chem. 2006 Mar;52(3):383-8. Epub 2006 Jan 19.|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Recruiting|
|Estimated Enrollment ICMJE||26|
|Estimated Completion Date||December 2011|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
|Ages||18 Years to 75 Years|
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Not Provided|
|Location Countries ICMJE||Germany|
|NCT Number ICMJE||NCT01090336|
|Other Study ID Numbers ICMJE||PC01, S-235/2009|
|Has Data Monitoring Committee||No|
|Responsible Party||Prof. Dr. Evangelos Giannitsis, Department of Cardiology, University of Heidelberg|
|Study Sponsor ICMJE||University of Heidelberg|
|Collaborators ICMJE||Daiichi Sankyo Europe, GmbH|
|Information Provided By||University of Heidelberg|
|Verification Date||March 2010|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP