- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT02096419
Continuous Clopidogrel Dose Adjustment in Acute Coronary Syndrome Patients With High On-treatment Platelet Reactivity
Effect of Continuous Clopidogrel Dosing Targeted After Platelet Function Testing in Acute Coronary Syndrome Patients Undergoing Percutaneous Coronary Intervention With High On-treatment Platelet Reactivity
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Dual antiplatelet therapy (DAPT) with aspirin and P2Y12 receptor antagonists during 12 months presents cornerstone treatment in acute coronary syndrome (ACS) patients undergoing percutaneous coronary intervention (PCI). Clopidogrel is the most widely used P2Y12 inhibitor despite it's limitations that include highly variable P2Y12-receptor inhibition which causes wide interindividual platelet reactivity variability. Since high on-treatment platelet reactivity (HTPR) on clopidogrel is strongly associated with adverse events, antiplatelet therapy tailoring has been vastly investigated to determine whether individualized approach could improve outcomes. In the time of progressive personalized approach to therapy, effective strategies are needed to minimize the risk of ischemic adverse events without increasing the risk for bleeding.
Aim of this study is to investigate whether continuous clopidogrel dose adjustment according to platelet function testing (PFT) using Multiplate® function analyzer (Roche Diagnostics, Mannheim, Germany) could decrease the rate of adverse events in ACS patients treated with PCI and with HTPR during early and late period of DAPT treatment.
Cut off values for HTPR and enhanced platelet response were set according to the consensus statement at >46 U and <19 U, respectively. PFT and therapy tailoring was performed at day 1, 2, 3, 7, 30 and month 2, 3, 6, 9 and 12.
Type d'étude
Inscription (Réel)
Phase
- Phase 4
Contacts et emplacements
Lieux d'étude
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Zagreb, Croatie, 10000
- University Hospital Centre Zagreb
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- acute coronary syndrome patients treated with successful PCI
- age 18-80 years
- determined high on-treatment platelet reactivity
Exclusion Criteria:
- continuous postinterventional glycoprotein (GP) IIbIIIa receptor inhibitor infusion
- thrombocytopenia (<150x109/L)
- significant renal insufficiency (creatinine>200 µmol/L)
- anemia (Htc<30%)
- hemorrhagic diathesis
- history of intracranial bleeding or ischemic cerebrovascular insult 6 months before
- major operation 6 weeks before
- concomitant chronic anticoagulation therapy
- age <18 years and >80 years
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Aucune intervention: control group
Patients in this group will receive standard clopidogrel dose
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Expérimental: interventional group
Patients in the interventional arm will receive clopidogrel dose adjustment to maintain optimal platelet reactivity determined by Multiplate function analyzer (19-46U). They will undergo platelet function testing on day 1,2,3,7,30 and month 2,3,6,9 and 12. On first two measurements patients will receive up to 2 additional clopidogrel loading doses (600 mg) and put on 150 mg and 75 mg a day if platelet reactivity >18U and <18U, respectively. Maintenance dose will be determined on following measurements - increased by 75 mg if >46U; not changed if 19-46U; decreased by 75 mg if <19U. Minimal dose - 75 mg; maximal dose 300 mg (for patients >70 years 150 mg) |
Patients in the interventional arm will receive clopidogrel dose adjustment to maintain optimal platelet reactivity determined by Multiplate function analyzer (19-46U). They will undergo platelet function testing on day 1,2,3,7,30 and month 2,3,6,9 and 12. On first two measurements patients will receive up to 2 additional clopidogrel loading doses (600 mg) and put on 150 mg and 75 mg a day if platelet reactivity >18U and <18U, respectively. Maintenance dose will be determined on following measurements - increased by 75 mg if >46U; not changed if 19-46U; decreased by 75 mg if <19U. Minimal dose - 75 mg; maximal dose 300 mg (for patients >70 years 150 mg)
Autres noms:
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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clinical outcome - composite endpoint of total cardiovascular death, non-fatal myocardial infarction, target vessel revascularization and ischemic stroke
Délai: 12 months
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Data will be collected during the entire follow up period on interviews and analyzing patient medical data.
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12 months
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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number of bleeding events
Délai: 12 months
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BARC classification (Bleeding Academic Research Consortium)
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12 months
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Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Les enquêteurs
- Chaise d'étude: Davor Milicic, MD, PhD, University of Zagreb School of Medicine
- Chercheur principal: Jure Samardzic, MD, University of Zagreb School of Medicine
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Processus pathologiques
- Ischémie myocardique
- Maladies cardiaques
- Maladies cardiovasculaires
- Maladies vasculaires
- Maladie
- Syndrome
- Syndrome coronarien aigu
- Effets physiologiques des médicaments
- Agents neurotransmetteurs
- Mécanismes moléculaires de l'action pharmacologique
- Inhibiteurs de l'agrégation plaquettaire
- Antagonistes des récepteurs purinergiques P2Y
- Antagonistes des récepteurs purinergiques P2
- Antagonistes purinergiques
- Agents purinergiques
- Clopidogrel
Autres numéros d'identification d'étude
- 108-1081875-1993-1
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