A Pharmacodynamic Study With Ticagrelor in African American Patients

September 30, 2014 updated by: AstraZeneca

A Randomized, Open-Label, Multiple Dose, Crossover, Multiple Center Study of the Antiplatelet Effects of Ticagrelor Versus Clopidogrel in African American Patients With Stable Coronary Artery Disease

The purpose of this study is to assess the pharmacodynamic effect of ticagrelor in African American patients with stable coronary artery disease.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

A Randomized, Open-Label, Multiple Dose, Crossover, Multiple Center Study of the Antiplatelet Effects of Ticagrelor versus Clopidogrel in African American Patients with Stable Coronary Artery Disease

Study Type

Interventional

Enrollment (Actual)

50

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Delaware
      • Newark, Delaware, United States
        • Research Site
      • Wilmington, Delaware, United States
        • Research Site
    • District of Columbia
      • Washington, District of Columbia, United States
        • Research Site
    • Florida
      • Hollywood, Florida, United States
        • Research Site
      • Jacksonville, Florida, United States
        • Research Site
    • Georgia
      • Atlanta, Georgia, United States
        • Research Site
    • Maryland
      • Towson, Maryland, United States
        • Research Site
    • Texas
      • Beaumont, Texas, United States
        • Research Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Provision of signed and dated informed consent before initiation of any study-related procedures
  • Male or female patients aged 18 years or older
  • Documented stable CAD fulfilling and taking 75-100mg ASA daily treatment
  • Females must be post menopausal or surgically sterile Self-identified as African American

Exclusion Criteria:

  • Any indication for oral anticoagulant (e.g., atrial fibrillation, mitral stenosis or prosthetic heart valve) or dual antiplatelet treatment (e.g., clopidogrel, prasugrel, ASA dose other than 75 to 100 mg daily) during study period
  • Patients who had ACS or stent placed within 12 months of screening Patients with a history of moderate or severe hepatic impairment
  • Current smokers, including the use of tobacco containing products in the past 1 month of randomization Patients required dialysis

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Clopidogrel
Drug: Clopidogrel
75mg (once daily)/Max - 600mg tablets (loading dose)
Experimental: Ticagrelor
Drug: Ticagrelor
Min - 90mg/Max - 180mg tablets (loading dose)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Inhibition of the P2Y12 Receptor as Measured by Platelet Reaction Unit (PRU) From VerifyNow™ (a Platelet Function Test Developed by Accumetrics) at 2 Hours After Loading Dose
Time Frame: At 2 hours after the loading dose
At 2 hours after the loading dose

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Inhibition of the P2Y12 Receptor as Measured by PRU From VerifyNow™ at 0.5 Hour and 8 Hours After Loading Dose
Time Frame: At 0.5 hour and 8 hours after the loading dose
At 0.5 hour and 8 hours after the loading dose
Inhibition of the P2Y12 Receptor as Measured by PRU From VerifyNow™ at 2 Hours and 8 Hours on Day 7 After Multiple Doses and at End of Dosing Interval on Day 8
Time Frame: At 2 hours and 8 hours on Day 7 after multiple doses and at end of dosing interval on Day 8
At 2 hours and 8 hours on Day 7 after multiple doses and at end of dosing interval on Day 8
Ticagrelor Plasma Concentrations After the Loading and Maintenance Doses
Time Frame: Predose, 0.5 hour, 2 hours, 8 hours from loading dose; 0, 2 hours, 8 hours and 12 hours from last dose
The standard deviation (SD) is the geometric SD
Predose, 0.5 hour, 2 hours, 8 hours from loading dose; 0, 2 hours, 8 hours and 12 hours from last dose
AR-C124910XX (an Active Metabolite of Ticagrelor) Plasma Concentrations After the Loading and Maintenance Doses
Time Frame: Predose, 0.5 hour, 2 hours, 8 hours from loading dose and 0, 2 hours, 8 hours and 12 hours from last dose
The standard deviation (SD) is the geometric SD
Predose, 0.5 hour, 2 hours, 8 hours from loading dose and 0, 2 hours, 8 hours and 12 hours from last dose

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

AstraZeneca

Investigators

  • Study Director: Glenn Carlson, MD, AstraZeneca Pharmaceuticals Room C3B-718PO Box 15437 Wilmington, DE 19850-5437 USA

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2012

Primary Completion (Actual)

September 1, 2013

Study Completion (Actual)

September 1, 2013

Study Registration Dates

First Submitted

January 30, 2012

First Submitted That Met QC Criteria

January 30, 2012

First Posted (Estimate)

February 1, 2012

Study Record Updates

Last Update Posted (Estimate)

October 8, 2014

Last Update Submitted That Met QC Criteria

September 30, 2014

Last Verified

September 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • D5130L00013

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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