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Switch to Ticagrelor in Critical Limb Ischemia Anti-platelet Study

NCT02091921 · Status: COMPLETED · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 53

Last updated 2019-06-19

Study results available
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Summary

Critical Limb Ischemia (CLI) is defined as limb pain that occurs at rest, or impending limb loss that is caused by severe compromise of blood flow to the affected extremity. CLI is a major cause of death and disability (secondary to myocardial infarction, stroke and amputation). The mortality in patients with CLI approaches 13-25% and 50% at one and five years respectively. High on-treatment platelet reactivity (HPR) in patients treated with aspirin and clopidogrel is associated with increased risk of recurrent cardiovascular events after percutaneous coronary interventions and coronary syndromes. Preliminary studies suggest that the prevalence of HPR in patients with critical limb ischemia treated with aspirin and clopidogrel is as high a 78.5%. In patients with coronary artery disease ticagrelor overcomes non-responsiveness to clopidogrel. However, the antiplatelet effect of ticagrelor in patients with critical limb ischemia is unknown.

Conditions

  • Critical Limb Ischemia

Interventions

DRUG

Ticagrelor

All patients will be switched from clopidogrel to ticagrelor 90 mg twice daily for two weeks and the VerifyNow and VASP platelet reactivity assays repeated, samples will be collected before and 6±1 hours after the last ticagrelor dose.

Sponsors & Collaborators

  • University of Southern California

    lead OTHER

Principal Investigators

  • Leonardo Clavijo, MD, PhD · University of Southern California

Study Design

Allocation
NA
Purpose
SCREENING
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-02-16
Primary Completion
2016-11-30
Completion
2016-11-30

Countries

  • United States

Study Locations

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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 NCT02091921 on ClinicalTrials.gov