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A Trial Comparing the Ischemic Preconditioning Effects of Ticagrelor and Clopidogrel in Humans

NCT01743937 · Status: TERMINATED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 18

Last updated 2020-11-25

No results posted yet for this study

Summary

Antiplatelet therapy remains a cornerstone in the treatment of acute and chronic coronary artery disease. Aspirin was the first such therapy to prove its benefits in acute myocardial infarction. Compared to aspirin monotherapy, the combination of aspirin and clopidogrel, a thienopyridine P2Y12 inhibitor, has been demonstrated to reduce adverse event rates among patients with acute coronary syndromes (with or without ST-segment elevation) and those receiving intracoronary stents. In the Triton-TIMI 38 trial a novel thienopyridine, prasugrel, was compared to clopidogrel in patients with acute coronary syndrome undergoing percutaneous coronary intervention. Although prasugrel significantly reduced recurrent myocardial infarction, bleeding rates were increased and no improvement in cardiac or all-cause mortality was demonstrated. However, in 2009, the authors of the PLATO trial demonstrated an unexpected cardiovascular mortality benefit with ticagrelor over clopidogrel, an endpoint not previously met by any other antiplatelet agent against an active comparator. Based on the reproducible adverse events seen in the DISPERSE, DISPERSE-2, and PLATO trials, an adenosine-mediated effect of ticagrelor is proposed.

Hypothesis: The aim of this study is to test the hypothesis that ticagrelor produces pharmacologic ischemic preconditioning, an undescribed potential off-label property of ticagrelor that could represent a plausible mechanism for its effects on cardiovascular mortality.

Conditions

  • Ischemic Preconditioning

Interventions

PROCEDURE

Coronary occlusion with balloon inflation

Sponsors & Collaborators

  • AstraZeneca

    collaborator INDUSTRY

  • University of Texas Southwestern Medical Center

    lead OTHER

Principal Investigators

  • James de Lemos, MD · UT Southwestern Medical Center

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
74 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2013-01-31
Primary Completion
2017-12-31
Completion
2017-12-31

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01743937 on ClinicalTrials.gov