- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01012544
Platelet Reactivity in Stent Thrombosis Patients (MAPCAT)
The MAgnitude of Platelet Inhibition and the Pharmacokinetics of a 600 mg Loading Dose of Clopidogrel, in Different Patient CATegories (Stable Angina Versus Acute-coronary Syndromes Versus ST-elevated Myocardial Infarction).
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Objectives:
The first objective of the MAPCAT-study is to investigate whether plasma pharmacokinetics (Cmax, Tmax and AUC) of an additional 600 mg loading dose are impaired in patients with a history of stent thrombosis.
The second objective of the MAPCAT study is to investigate whether genetic polymorphisms in receptors, enzymes and ligands involved in the process of thrombosis and haemostasis as well in the conversion-process of clopidogrel into its metabolites do have influence on both the absolute magnitude of platelet inhibition and Cmax, Tmax and AUC.
Tipo di studio
Iscrizione (Effettivo)
Fase
- Fase 4
Contatti e Sedi
Luoghi di studio
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Utrecht
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Nieuwegein, Utrecht, Olanda, 3435CM
- St Antonius Hospital
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Patients with a history of a stent thrombosis in the period 2004-2008.
Exclusion Criteria:
- Persistent acute ST-segment elevation
- Successful revascularization during the qualifying hospitalization, prior to study entry
- Acute pulmonary edema, hypotension, or evidence of cardiogenic shock
- Clinically significant liver disease
- End stage kidney disease requiring dialysis
- Use at study entry of drugs that are strong inhibitors of cytochrome P450 3A4 and CYP3A5 (i.e. clarithromycin, erythromycin, itraconazole, ketoconazole)
- Contraindications to antithrombotic/antiplatelet therapy
- Failed coronary intervention in the previous 2 weeks
- Malignancies
- Increased risk of bleeding (previous stroke in the past months, active bleeding or bleeding diathesis, recent trauma or major surgery in the last month, suspected aortic dissection, oral anticoagulation therapy with coumarin derivate within 7 days, recent use of GPIIb/IIIa inhibitors within 14 days, severe uncontrolled hypertension >180 mmHg unresponsive to therapy)
- Relevant hematologic deviations (haemoglobin <100g/L (6,2 mmol/L) or hematocrit <34%, platelet count <100 x 109 /L or platelet count > 600 x 109/L)
- Known allergy to clopidogrel
- Pregnancy (present or suspected)
- uncontrolled hypertension at time of randomization
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Diagnostico
- Assegnazione: Non randomizzato
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Comparatore attivo: stent thrombosis patients
Patients with a history of a stent thrombosis
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both arms of the study (patients with a history of stent thrombosis as well as patients who did not suffer from a stent thrombosis) will be given a 600 mg loading dose of clopidogrel
Altri nomi:
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Comparatore attivo: Patients without a history of a stent thrombosis
Patients without a history of stent thrombosis
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both arms of the study (patients with a history of stent thrombosis as well as patients who did not suffer from a stent thrombosis) will be given a 600 mg loading dose of clopidogrel
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
|---|---|
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Plasma concentrations of unchanged clopidogrel, its active thiol metabolite and its inactive carboxyl metabolite between the different patient groups after the administration of a 600 mg loading dose of clopidogrel.
Lasso di tempo: 6 hours after the administration of a 600mg loading dose of clopidogrel
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6 hours after the administration of a 600mg loading dose of clopidogrel
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Misure di risultato secondarie
Misura del risultato |
Lasso di tempo |
|---|---|
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The magnitude of platelet reactivity as measured with several commercial available platelet function tests before and 6 hours after the ingestion of the loading dose.
Lasso di tempo: platelet reactivity measured at baseline and 6 hours after a 600 mg clopidogrel loading dose.
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platelet reactivity measured at baseline and 6 hours after a 600 mg clopidogrel loading dose.
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Exploratory Endpoint: prevalence of various genetic polymorphisms that might influence the pharmacokinetics of clopidogrel
Lasso di tempo: blood obtained for genetic sampeling at timepoint of first study blood collection
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blood obtained for genetic sampeling at timepoint of first study blood collection
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Collaboratori e investigatori
Sponsor
Collaboratori
Investigatori
- Investigatore principale: J.M. ten Berg, MD, PhD, St Antonius center for platelet function research
Pubblicazioni e link utili
Pubblicazioni generali
- van Werkum JW, Heestermans AA, Zomer AC, Kelder JC, Suttorp MJ, Rensing BJ, Koolen JJ, Brueren BR, Dambrink JH, Hautvast RW, Verheugt FW, ten Berg JM. Predictors of coronary stent thrombosis: the Dutch Stent Thrombosis Registry. J Am Coll Cardiol. 2009 Apr 21;53(16):1399-409. doi: 10.1016/j.jacc.2008.12.055.
- Elsenberg EH, van Werkum JW, van de Wal RM, Zomer AC, Bouman HJ, Verheugt FW, Berg JM, Hackeng CM. The influence of clinical characteristics, laboratory and inflammatory markers on 'high on-treatment platelet reactivity' as measured with different platelet function tests. Thromb Haemost. 2009 Oct;102(4):719-27. doi: 10.1160/TH09-05-0285.
- Taubert D, Bouman HJ, van Werkum JW. Cytochrome P-450 polymorphisms and response to clopidogrel. N Engl J Med. 2009 May 21;360(21):2249-50; author reply 2251. doi: 10.1056/NEJMc090391. No abstract available.
- Heestermans AA, van Werkum JW, Schomig E, ten Berg JM, Taubert D. Clopidogrel resistance caused by a failure to metabolize clopidogrel into its metabolites. J Thromb Haemost. 2006 May;4(5):1143-5. doi: 10.1111/j.1538-7836.2006.01891.x. No abstract available.
- Taubert D, von Beckerath N, Grimberg G, Lazar A, Jung N, Goeser T, Kastrati A, Schomig A, Schomig E. Impact of P-glycoprotein on clopidogrel absorption. Clin Pharmacol Ther. 2006 Nov;80(5):486-501. doi: 10.1016/j.clpt.2006.07.007.
- Bouman HJ, van Werkum JW, Breet NJ, ten Cate H, Hackeng CM, ten Berg JM. A case-control study on platelet reactivity in patients with coronary stent thrombosis. J Thromb Haemost. 2011 May;9(5):909-16. doi: 10.1111/j.1538-7836.2011.04255.x.
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
- Malattia cardiovascolare
- Malattie vascolari
- Embolia e Trombosi
- Trombosi
- Effetti fisiologici delle droghe
- Agenti neurotrasmettitori
- Meccanismi molecolari dell'azione farmacologica
- Inibitori dell'aggregazione piastrinica
- Antagonisti del recettore purinergico P2Y
- Antagonisti del recettore purinergico P2
- Antagonisti purinergici
- Agenti purinergici
- Clopidogrel
Altri numeri di identificazione dello studio
- MAPCAT01
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
Prove cliniche su Trombosi dello stent dell'arteria coronaria
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I.R.C.C.S Ospedale Galeazzi-Sant'AmbrogioReclutamentoCoronary Artery DiseaseItalia
Prove cliniche su Clopidogrel
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Fondation Hôpital Saint-JosephNon ancora reclutamentoCLTI Definita come Categoria Rutherford 4 o 5
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Chinese PLA General HospitalSconosciutoCLOPIDOGREL, METABOLISMO SCARSO di (disturbo)Cina
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Korea University Anam HospitalCompletato
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Ospedale San DonatoCompletatoInfarto miocardico acutoItalia
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University of PecsTerminatoAngina pectoris stabile | Intervento coronarico percutaneo ad hocUngheria
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University of North Carolina, Chapel HillCompletato
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Hospital Central San Luis Potosi, MexicoSconosciutoSindrome coronarica acuta
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Lady Reading Hospital, PakistanPakistan Chest Society, PakistanReclutamentoBPCO | BPCO Esacerbazione AcutaPakistan
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Seung-Jung ParkCardioVascular Research Foundation, KoreaCompletatoDisfunsione dell'arteria coronariaCorea, Repubblica di