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Comparing Ticagrelor Versus Clopidogrel on Microcirculation (PLEIO)

2. februar 2018 opdateret af: Kyungil Park, Dong-A University

A Prospective Randomized Controlled Clinical Trial of Comparing ticagreLor Versus clopidogrEl on mIcrocirculation in Patients With Acute cOronary Syndrome Study

Recently, data (PLATO) from an AstraZeneca study of platelet inhibition and patient outcomes, a Phase III pivotal efficacy and safety study with a duration of up to 12 months comparing ticagrelor 90 mg twice daily dosing to clopidogrel 75 mg once daily dosing in acute coronary syndrome patients on ASA background, have demonstrated superiority of ticagrelor over clopidogrel in the prevention of fatal and non-fatal cardiovascular events. Currently, the mechanism for this mortality reduction remain uncertain. One hypothesis is a adenosine mediated theory that ticagrelor has been shown to enhance adenosine-induced vasodilation. Several experimental and clinical studies support the hypothesis that adenosine could reduce cardiac ischaemia reperfusion damage. Moreover, recent study has demonstrated that ticagrelor enhances adenosine-induced coronary vasodilatory responses in healthy humans. However, there are no available data on coronary circulation effects after chronic treatment of ticagrelor in patients with ACS who have altered resting coronary blood flow dynamics due to advanced coronary artery disease.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This study is a prospective, randomized, open-label, active controlled study with two parallel study groups.

For inclusion in the study subjects should fulfill the following criteria:

  1. Provision of informed consent prior to any study specific procedures
  2. Female or male aged 20-85 years
  3. All patients with ACS scheduled for PCI will be eligible, assuming their ability to understand the character and individual consequences of participation as well as giving written informed consent.
  4. Be able to understand and comply with the requirements of the study, as judged by the investigator.

To investigate the effects of ticagrelor on coronary microcirculation, IMR will be measured twice, 6 months apart in the same lesion, compared with clopidogrel.

The IMR is defined as simultaneously measured distal coronary pressure divided by the inverse of the thermodilution-derived hyperaemic mean transit time (Tmn), or more simply, distal coronary pressure multiplied by the Tmn.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

120

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Korea, Republikken
      • Busan, Korea, Republikken
        • Department of Internal Medicine,Dong-A University College of Medicine

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

20 år til 85 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Provision of informed consent prior to any study specific procedures
  • All patients with ACS scheduled for PCI will be eligible, assuming their ability to understand the character and individual consequences of participation as well as giving written informed consent.
  • Be able to understand and comply with the requirements of the study, as judged by the investigator.

Exclusion Criteria:

  • History of intracranial bleeding
  • Severe hepatic impairment
  • Active pathologic bleeding
  • Hypersensitivity to ticagrelor or any of the excipients
  • Liver cirrhosis greater than or equal to Child class B
  • Decreased serum platelet level (≤ 100,000/uL)
  • Life expectancy ≤ 1 year
  • Need for chronic oral anticoagulant therapy
  • Patients with known bleeding diathesis or coagulation disorder
  • History of previous intracranial bleed at any time, gastrointestinal bleed within the past 6 months, or major surgery within 30 days.
  • Ischemic stroke within the previous 14 days
  • Renal failure requiring dialysis or anticipated need for dialysis during the course of the study
  • Concern for inability of the patient to comply with study procedures and/or follow up
  • Unable to give informed consent.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Ticagrelor
Ticagrelor 90mg, twice a day
Medicin: Ticagrelor
90mg, twice a day
Aktiv komparator: Clopidogrel
Clopidogrel 75mg, once a day
Medicin: Clopidogrel
75mg, once a day

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Index of microcirculatory resistance using 0.014-in coronary pressure wire
Tidsramme: 6 months
6 months

Sekundære resultatmål

Resultatmål
Tidsramme
Fractional flow reserve using 0.014-in coronary pressure wire
Tidsramme: 6 months
6 months
Coronary flow reserve using 0.014-in coronary pressure wire
Tidsramme: 6 months
6 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Dong-A University

Samarbejdspartnere

AstraZeneca
Biotronik SE & Co. KG

Efterforskere

  • Studieleder: Kyungil Park, MD, Dong-A University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. december 2014

Primær færdiggørelse (Faktiske)

1. december 2016

Studieafslutning (Faktiske)

31. december 2016

Datoer for studieregistrering

Først indsendt

25. november 2015

Først indsendt, der opfyldte QC-kriterier

27. november 2015

Først opslået (Skøn)

1. december 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. februar 2018

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. februar 2018

Sidst verificeret

1. februar 2018

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 14-218

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Akut koronarsyndrom

Kliniske forsøg med Ticagrelor

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Betingelser

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Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

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