- ICH GCP
- US-Register für klinische Studien
- Klinische Studie 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
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
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.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Phase 4
Kontakte und Standorte
Studienorte
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Zagreb, Kroatien, 10000
- University Hospital Centre Zagreb
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
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
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Keine (Offenes Etikett)
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
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Kein Eingriff: control group
Patients in this group will receive standard clopidogrel dose
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Experimental: 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)
Andere Namen:
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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clinical outcome - composite endpoint of total cardiovascular death, non-fatal myocardial infarction, target vessel revascularization and ischemic stroke
Zeitfenster: 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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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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number of bleeding events
Zeitfenster: 12 months
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BARC classification (Bleeding Academic Research Consortium)
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12 months
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Mitarbeiter und Ermittler
Sponsor
Mitarbeiter
Ermittler
- Studienstuhl: Davor Milicic, MD, PhD, University of Zagreb School of Medicine
- Hauptermittler: Jure Samardzic, MD, University of Zagreb School of Medicine
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Pathologische Prozesse
- Myokardischämie
- Herzkrankheiten
- Herz-Kreislauf-Erkrankungen
- Gefäßerkrankungen
- Erkrankung
- Syndrom
- Akutes Koronar-Syndrom
- Physiologische Wirkungen von Arzneimitteln
- Neurotransmitter-Agenten
- Molekulare Mechanismen der pharmakologischen Wirkung
- Thrombozytenaggregationshemmer
- Purinerge P2Y-Rezeptorantagonisten
- Purinerge P2-Rezeptorantagonisten
- Purinerge Antagonisten
- Purinerge Wirkstoffe
- Clopidogrel
Andere Studien-ID-Nummern
- 108-1081875-1993-1
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