- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT01383304
Aspirin Response in High Risk Patients With Coronary Artery Disease
Is a Reduced Biochemical Response to Aspirin Associated With Increased Cardiovascular Morbidity and Mortality in High Risk Patients With Coronary Artery Disease?
Previous studies indicate that patients with cardiovascular disease have a variable response to aspirin. Despite treatment with aspirin a large number of patients suffer a myocardial infarction. This has given rise to the phenomenon "aspirin low-responsiveness". Laboratory aspirin low-responsiveness can be defined as the failure of aspirin to inhibit platelet production of thromboxane A2 or inhibit thromboxane-dependent platelet aggregation. Whether a low platelet response to aspirin results in an increased risk of future thrombotic events is of great clinical significance, but is still unknown.
The investigators hypothesize that patients with a reduced response to aspirin, determined by platelet aggregation using the apparatus Verify Now Aspirin and Multiplate, have a higher risk of thrombosis.
The purpose of this study is to investigate whether a higher incidence of cardiovascular events is found in patients with coronary artery disease (CAD) having a reduced biochemical response to aspirin compared with CAD patients having a normal biochemical response to aspirin. In addition to CAD, all patients have at least one of the following risc factors: previous myocardial infarction, type 2 diabetes mellitus and/or renal insufficiency.
Studieöversikt
Status
Studietyp
Inskrivning (Faktisk)
Kontakter och platser
Studieorter
-
-
-
Aarhus N, Danmark, 8200
- Department of Clinical Biochemistry, Aarhus University Hospital, Skejby
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
906 patients with CAD. In addition to CAD, all patients have at least one of the following risc factors: previous myocardial infarction, type 2 diabetes mellitus and/or renal insufficiency.
Eligible patients are identified in the Western Denmark Heart Registry.
Beskrivning
Inclusion Criteria:
- Coronary artery disease verified by coronary angiogram
- Treatment with aspirin 75 mg/d for at least the previous 7 days
- Previous myocardial infarction more than one year ago (groups with previous myocardial infarction)
- Type 2 diabetes mellitus treated with oral antidiabetics and/or insulin (groups with type 2 diabetes mellitus)
- Renal insufficiency; glomerular filtration rate <60 ml/min at the time of blood sampling (groups with renal insufficiency)
Exclusion Criteria:
- Treatment with NSAIDs, clopidogrel, ticlopidine, dipyridamole, warfarin or any other drugs known to affect platelet function
- Ischemic vascular event within the previous 12 months
- Revascularization (angioplasty or coronary by-pass graft surgery) within the previous 12 months
- Platelet count <120 x 10^9/L or >450 x 10^9/L
- For patients without diabetes: fast glucose >7 mmol/L
- Unable to give informed consent
Studieplan
Hur är studien utformad?
Designdetaljer
- Observationsmodeller: Kohort
- Tidsperspektiv: Blivande
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
---|---|
Combined primary endpoint: Cardiovascular death, acute myocardial infarction, ischaemic stroke
Tidsram: Evaluation after 3 years
|
Evaluation after 3 years
|
Sekundära resultatmått
Resultatmått |
Tidsram |
---|---|
Combined secondary endpoint: Cardiovascular death, acute myocardial infarction, ischaemic stroke
Tidsram: Evaluation after 5 years
|
Evaluation after 5 years
|
Single endpoints:cardiovascular death; acute myocardial infarction; ischemic stroke; stent thrombosis; all-cause death
Tidsram: Evaluation after 3 and 5 years
|
Evaluation after 3 and 5 years
|
Andra resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
Genotype according to pre-specified genetic single nucleotide polymorphisms (SNPs)
Tidsram: Baseline
|
At the day of blood sampling, plasma samples are retrieved for DNA extraction.
DNA samples are used to evaluate if pre-specified genetic single nucleotide polymorphisms (SNPs) are associated with platelet aggregation levels.
|
Baseline
|
Samarbetspartners och utredare
Sponsor
Utredare
- Huvudutredare: Anne-Mette Hvas, MD, Ph.D, Department of Clinical Biochemistry, Aarhus University Hospital, Skejby, Denmark
Publikationer och användbara länkar
Allmänna publikationer
- Nielsen HL, Kristensen SD, Thygesen SS, Mortensen J, Pedersen SB, Grove EL, Hvas AM. Aspirin response evaluated by the VerifyNow Aspirin System and light transmission aggregometry. Thromb Res. 2008;123(2):267-73. doi: 10.1016/j.thromres.2008.03.023. Epub 2008 May 21.
- Pedersen SB, Grove EL, Nielsen HL, Mortensen J, Kristensen SD, Hvas AM. Evaluation of aspirin response by Multiplate whole blood aggregometry and light transmission aggregometry. Platelets. 2009 Sep;20(6):415-20. doi: 10.1080/09537100903100643.
- Hedegaard SS, Hvas AM, Grove EL, Refsgaard J, Rocca B, Davi G, Kristensen SD. Optical platelet aggregation versus thromboxane metabolites in healthy individuals and patients with stable coronary artery disease after low-dose aspirin administration. Thromb Res. 2009 May;124(1):96-100. doi: 10.1016/j.thromres.2008.12.034. Epub 2009 Feb 11.
- Grove EL, Hvas AM, Johnsen HL, Hedegaard SS, Pedersen SB, Mortensen J, Kristensen SD. A comparison of platelet function tests and thromboxane metabolites to evaluate aspirin response in healthy individuals and patients with coronary artery disease. Thromb Haemost. 2010 Jun;103(6):1245-53. doi: 10.1160/TH09-08-0527. Epub 2010 Mar 29.
- Mortensen SB, Larsen SB, Grove EL, Kristensen SD, Hvas AM. Reduced platelet response to aspirin in patients with coronary artery disease and type 2 diabetes mellitus. Thromb Res. 2010 Oct;126(4):e318-22. doi: 10.1016/j.thromres.2010.03.013. Epub 2010 May 7.
- Larsen SB, Neergaard-Petersen S, Grove EL, Kristensen SD, Hvas AM. Increased platelet aggregation and serum thromboxane levels in aspirin-treated patients with prior myocardial infarction. Thromb Haemost. 2012 Jul;108(1):140-7. doi: 10.1160/TH12-01-0026. Epub 2012 Apr 26.
- Wurtz M, Nissen PH, Grove EL, Kristensen SD, Hvas AM. Genetic determinants of on-aspirin platelet reactivity: focus on the influence of PEAR1. PLoS One. 2014 Oct 31;9(10):e111816. doi: 10.1371/journal.pone.0111816. eCollection 2014.
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Förväntat)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- 22527
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .
Kliniska prövningar på Hjärtinfarkt
-
University of Southern CaliforniaAktiv, inte rekryterandeNSTEMI - Icke-ST Segment Elevation MI | Akut kranskärlssyndrom (ACS) | STEMI - ST Elevation Myocardial Infarction (MI) | Instabil angina (UA)Förenta staterna
-
Sichuan Provincial People's HospitalAnmälan via inbjudanRest Gated Myocardial Perfusion Imaging vid hjärtsviktKina
-
Azienda Ospedaliero Universitaria Maggiore della...Università degli Studi del Piemonte Orientale "Amedeo Avogadro"Rekrytering
-
Medinet Heart CentreOkändKranskärlsbypass | Ischemisk efterkonditionering | Myocardial Reperfusion Injur | Ischemisk förkonditionering, myokardialPolen
-
University of MessinaNatasha Irrera; Gianluca Di Bella; Antonio Micari; Roberto LicordariRekryteringHjärtinfarkt | Myokardfibros | Myocardial Remodeling, VentrikulärItalien
-
Peking University Third HospitalAvslutad
-
Stanford UniversityUpphängdMyocardial BridgingFörenta staterna
-
Izmir Bakircay UniversityAvslutadMyokardbro av kransartärenKalkon
-
Fondazione Policlinico Universitario Agostino Gemelli...Avslutad
-
ITAB - Institute for Advanced Biomedical TechnologiesAzienda Ospedaliero, Universitaria Ospedali RiunitiAvslutadMyokardbro av kransartärenItalien