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CompletedNCT02026219Updated Oct 1, 2015

Comparison of Clopidogrel and Ticagrelor on Microvascular Dysfunction in ST-Segment Elevation Myocardial Infarction

A Phase 4 interventional study of Clopidogrel and Ticagrelor in Non-ST Segment Elevation Myocardial Infarction and ST Segment Elevation Myocardial Infarction, sponsored by Inha University Hospital. Completed at 1 site in Korea, Republic of. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2015-10-01.

Sponsored by Inha University Hospital · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
76
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
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Study summary

Ticagrelor is a non-thienophyridine, direct P2Y12 blocker that is more potent than clopidogrel and is associated with less interindividual variability. In the PLATO trial, it was found to be superior to clopidogrel with respect to cardiovascular outcomes and total mortality without increasing the risk of bleedings.

More potent and reversible receptor bindings are possible explanation for the superior outcomes. Beside the potent effect on inhibition of antiplatelet function, ticagrelor has previously been demonstrated to increase adenosine levels by inhibiting adenosine re-uptake in tissue level and can induce adenosine triphosphate (ATP) release from human red cells, which both stimulate vasodilation of in red blood cells.

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Conditions studied

  • Non-ST Segment Elevation Myocardial Infarction
  • ST Segment Elevation Myocardial Infarction
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In context

Myocardial Infarction

2,744 studies on the registry are indexed under Myocardial Infarction; 418 are open to participants now.

This study's enrollment of 76 is below the median of 148 across 1,595 interventional studies indexed under Myocardial Infarction.

Browse Myocardial Infarction studies →

Lead sponsor

Inha University Hospital is the lead sponsor of 37 studies on the registry; 8 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Males and Females

    • between the ages of 18 and 75 years
    • STEMI patients treated with percutaneous coronary intervention
    • Able to provide informed consent

Exclusion criteria

  • History of stroke or transient ischemic attack

    • Platelet count \< 100 000/μL
    • Known Bleeding Diathesis
    • Hematocrit \<30% or >52%
    • Severe Liver Dysfunction
    • Renal Insufficiency (Creatinine Clearance \< 30ml/min)
    • Pregnant females
    • Cardiogenic shock or symptomatic hypotension or sitting SBP \< 95 mmHg
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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
76 participants (actual)

Study arms

  • Experimental
    Clopidogrel

    Clopidogrel 600mg loading

    Drug: Clopidogrel

  • Experimental
    Ticagrelor

    Ticagrelor 180mg loading

    Drug: Ticagrelor

Interventions

  • DrugClopidogrel

    Clopidogrel 600mg loading

  • DrugTicagrelor

    Ticagrelor 180mg loading

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What researchers measure

Primary outcomes

  1. Index of microcirculatory resistance (IMR) measured after successful coronary intervention

    Time frame: IMR will be immediately assessed after successful PCI patients within 48hr from admission

Secondary outcomes

  1. wall motion score index on three month later TTE from index PCI

    Time frame: TTE will be assessed in all enrolled patients 3 month later from index PCI

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Study locations

1 site
  • Inha University Hospital
    Incheon, 400-711, Korea, Republic of
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References and documents

Publications

  • Park SD, Baek YS, Woo SI, Kim SH, Shin SH, Kim DH, Kwan J, Park KS. Comparing the effect of clopidogrel versus ticagrelor on coronary microvascular dysfunction in acute coronary syndrome patients (TIME trial): study protocol for a randomized controlled trial. Trials. 2014 May 1;15:151. doi: 10.1186/1745-6215-15-151. PubMed 24885437 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 1, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02026219
Lead sponsor
Inha University Hospital
Responsible party
Sponsor
First posted
Jan 1, 2014
Start date
Oct 2013
Primary completion
Oct 2014
Completion
Dec 2014
Last update
Oct 1, 2015

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2015. You cannot join it, but the record below documents what was studied.

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