Impact of Chronic Kidney Disease on the Effects of Ticagrelor in Patients With Diabetes and Coronary Artery Disease

January 26, 2022 updated by: University of Florida

Impact of Chronic Kidney Disease on the Pharmacodynamic and Pharmacokinetic Effects of Ticagrelor in Patients With Diabetes Mellitus and Coronary Artery Disease

Patients with diabetes mellitus (DM) are at increased risk of atherothrombotic events. Importantly, DM is a key risk factor for the development of chronic kidney disease (CKD), which further enhances atherothrombotic risk. Clopidogrel is the most widely used platelet P2Y12 receptor inhibitor. However, despite its clinical benefit, patients with DM and CKD frequently experience recurrent atherothrombotic events. Ticagrelor is an oral, reversible, non-competitive P2Y12 receptor inhibitor with more potent and consistent platelet inhibition than clopidogrel. In large-scale clinical investigation, ticagrelor significantly reduced ischemic events to a greater extent than clopidogrel, a finding that was consistent also among DM patients. To date there has been no analysis on the efficacy of ticagrelor in DM patients according to CKD status. Moreover, although pharmacodynamic (PD) studies showed enhanced platelet inhibition associated with ticagrelor, it is unknown how this may be affected by CKD status. Ultimately, how PK/PD profiles of different ticagrelor dosing regimens may be affected by DM and CKD status is also unknown. The proposed study is aimed to show the impact of CKD status among patients with DM and coronary artery disease) CAD on PD and PK profiles of ticagrelor used at 2 doses (90mg bid and 60mg bid) in the setting of a prospective, randomized, cross-over trial.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Patients with diabetes mellitus (DM) are at increased risk of atherothrombotic events. Importantly, DM is a key risk factor for the development of chronic kidney disease (CKD), which further enhances atherothrombotic risk. These observations underscore the importance of antiplatelet therapy for prevention of atherothrombotic recurrences in these high-risk patients. Clopidogrel is the most widely used platelet P2Y12 receptor inhibitor. However, despite its clinical benefit, patients with DM and CKD frequently experience recurrent atherothrombotic events. This may be in part due to the impaired pharmacokinetic (PK) and pharmacodynamic (PD) effects of clopidogrel in patients with DM and CKD. Since both DM and CKD represent pandemic public health problems, the prevalence of which will double over the next 20 years, identifying antiplatelet agents with more favorable PK/PD profiles is of key importance.

Ticagrelor is an oral, reversible, non-competitive P2Y12 receptor inhibitor with more potent and consistent platelet inhibition than clopidogrel. In large-scale clinical investigation, ticagrelor significantly reduced ischemic events to a greater extent than clopidogrel, a finding that was consistent also among DM patients. In patients with CKD, ticagrelor led to an even greater relative risk reduction of ischemic events, including cardiovascular mortality, compared to patients without CKD. However, to date there has been no analysis on the efficacy of ticagrelor in DM patients according to CKD status. Moreover, although PD studies showed enhanced platelet inhibition associated with ticagrelor, it is unknown how this may be affected by CKD status. Ultimately, how PK/PD profiles of different ticagrelor dosing regimens may be affected by DM and CKD status is also unknown. The proposed study is aimed to show the impact of CKD status among patients with DM and CAD on PD and PK profiles of ticagrelor used at 2 doses (90mg bid and 60mg bid) in the setting of a prospective, randomized, cross-over trial.

Study Type

Interventional

Enrollment (Actual)

101

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
    • Florida
      • Jacksonville, Florida, United States, 32209
        • University of Florida

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:

  • Age >18 years.
  • Type 2 DM, defined according to World Health Organization (WHO) definition, on treatment with oral hypoglycemic agents and/or insulin for at least 2 months without any changes in treatment regimen;
  • Angiographically documented CAD.
  • On treatment with low-dose aspirin (81mg/day) and clopidogrel (75mg/day) for at least 30 days as part of standard of care.

Exclusion Criteria:

  • Patients with end-stage renal disease on hemodialysis.
  • Use of any antiplatelet therapy (except aspirin and clopidogrel) in past 30 days.
  • Use of parenteral or oral anticoagulation in past 30 day.
  • Active pathological bleeding.
  • History of intracranial hemorrhage with prior hemorrhage stroke.
  • Blood dyscrasia or bleeding diathesis.
  • Any active malignancy.
  • Platelet count < 80x106/µl.
  • Hemoglobin <10 g/dl.
  • Known hepatic dysfunction (known moderate and severe hepatic dysfunction).
  • Hemodynamic instability.
  • Known allergy or hypersensitivity to ticagrelor or any excipients.
  • Pregnant / lactating females (women of childbearing age must use reliable birth control while in the study).
  • Strong inhibitors of cytochrome CYP3A4 and potent inducers of cytochrome CYP3A4 (to avoid interaction with ticagrelor): ketoconazole, itraconazole, voriconazole, clarithromycin, nefazodone, ritonavir, saquinavir, nelfinavir, indinavir, atazanavir and telithromycin.
  • Patients with sick sinus syndrome (SSS) or high degree atrio-ventricular block without pacemaker protection.

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: CKD - Ticagrelor 90
Patients with chronic kidney disease will receive ticagrelor 90mg twice/daily for 7-10 days. Then patients will cross over to ticagrelor 60mg twice/daily for 7-10 days.
Drug: ticagrelor
Diabetic patients with or without chronic kidney disease will be randomized 1:1 to either (A) standard dose (90mg twice daily of ticagrelor) for 7-10 days and then cross-over to low dose (60mg twice daily of ticagrelor) for 7-10 days; (B) low dose (60mg twice daily of ticagrelor) for 7-10 days (phase 1) and then cross-over to standard dose (90mg twice daily of ticagrelor) for 7-10 days (phase 2).
Other Names:
  • brilinta
Experimental: CKD - Ticagrelor 60
Patients with chronic kidney disease will receive ticagrelor 60mg twice/daily for 7-10 days. Then patients will cross over to ticagrelor 90mg twice/daily for 7-10 days.
Drug: ticagrelor
Diabetic patients with or without chronic kidney disease will be randomized 1:1 to either (A) standard dose (90mg twice daily of ticagrelor) for 7-10 days and then cross-over to low dose (60mg twice daily of ticagrelor) for 7-10 days; (B) low dose (60mg twice daily of ticagrelor) for 7-10 days (phase 1) and then cross-over to standard dose (90mg twice daily of ticagrelor) for 7-10 days (phase 2).
Other Names:
  • brilinta
Active Comparator: Non-CKD - Ticagrelor 90
Patients without chronic kidney disease will receive ticagrelor 90mg twice/daily for 7-10 days. Then patients will cross over to ticagrelor 60mg twice/daily for 7-10 days.
Drug: ticagrelor
Diabetic patients with or without chronic kidney disease will be randomized 1:1 to either (A) standard dose (90mg twice daily of ticagrelor) for 7-10 days and then cross-over to low dose (60mg twice daily of ticagrelor) for 7-10 days; (B) low dose (60mg twice daily of ticagrelor) for 7-10 days (phase 1) and then cross-over to standard dose (90mg twice daily of ticagrelor) for 7-10 days (phase 2).
Other Names:
  • brilinta
Experimental: Non-CKD - Ticagrelor 60
Patients without chronic kidney disease will receive ticagrelor 60mg twice/daily for 7-10 days. Then patients will cross over to ticagrelor 90mg twice/daily for 7-10 days.
Drug: ticagrelor
Diabetic patients with or without chronic kidney disease will be randomized 1:1 to either (A) standard dose (90mg twice daily of ticagrelor) for 7-10 days and then cross-over to low dose (60mg twice daily of ticagrelor) for 7-10 days; (B) low dose (60mg twice daily of ticagrelor) for 7-10 days (phase 1) and then cross-over to standard dose (90mg twice daily of ticagrelor) for 7-10 days (phase 2).
Other Names:
  • brilinta

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Platelet Reactivity Measured by Vasodilator Stimulated Phosphoprotein (VASP) Platelet Reactivity Index (PRI %)
Time Frame: 7 days
The primary end point of the study was platelet reactivity assessed by VASP-PRI following treatment with ticagrelor 90mg between DM-CKD and DM-non-CKD cohorts. PRI % is a measure of platelet reactivity, where higher PRI levels represent higher platelet reactivity and lower effect of antiplatelet medications. PRI greater than 50% represents inadequate response to antiplatelet medications.
7 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Platelet Reactivity Measured by VerifyNow P2Y12
Time Frame: 7 days
Platelet reactivity assessed by VerifyNow P2Y12 following treatment with ticagrelor 90mg or 60 mg between DM-CKD and DM-non-CKD cohorts. Results are expressed in P2Y12 reaction units (PRU). PRU is a measure of platelet reactivity, where higher PRU levels represent higher platelet reactivity and lower effect of antiplatelet medications. PRU greater than 208 represents inadequate response to antiplatelet medications.
7 days

Collaborators and Investigators

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

Sponsor

University of Florida

Investigators

  • Principal Investigator: Dominick J Angiolillo, MD, PhD, University of Florida College of Medicine-Jacksonville

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

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 (Actual)

February 1, 2016

Primary Completion (Actual)

November 14, 2019

Study Completion (Actual)

June 17, 2020

Study Registration Dates

First Submitted

August 31, 2015

First Submitted That Met QC Criteria

August 31, 2015

First Posted (Estimate)

September 2, 2015

Study Record Updates

Last Update Posted (Actual)

January 28, 2022

Last Update Submitted That Met QC Criteria

January 26, 2022

Last Verified

January 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ESR-15-10953

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

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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