The Influence of Gene Polymorphism on Clinical Outcomes in Patients Undergoing PCI

December 4, 2020 updated by: Yujie Zhou, Beijing Anzhen Hospital
Dual antiplatelet therapy with aspirin and thienopyridines is an essential treatment in patients undergoing percutaneous coronary intervention (PCI). However, despite intensified antiplatelet treatment, some of the patients undergoing PCI develop thrombotic stent occlusion, suggesting incomplete platelet inhibition due to thienopyridine resistance. Some patients develop bleeding event because of the improper dosage and covariation. This observational study is designed for clarifying the Influence of gene polymorphism on clinical outcomes in patients undergoing PCI.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Patients undergoing PCI who received dual antiplatelet therapy with both aspirin (100mg) and P2Y12 inhibitors in standard dosage were enrolled. Investigators examined plasma biomarkers for platelet activation and DNA in those patients, and then analyzed the CYP2C19 genetic polymorphism to examine the influence of this genetic variation on the several biomarkers for platelet activation and bleeding event.

Study Type

Observational

Enrollment (Anticipated)

12000

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

  • China
    • Beijing
      • Beijing, Beijing, China, 100029
        • Recruiting
        • Beijing Anzhen Hospital
        • Contact:
        • Contact:
        • Principal Investigator:
          • Yujie Zhou, MD, PhD

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

Sampling Method

Probability Sample

Study Population

PCI patients in Beijing Anzhen Hospital from August 2018 to August 2019

Description

Inclusion Criteria:

  1. The patients undergoing PCI
  2. More than 18 years old
  3. Treated with aspirin and P2Y12 inhibitors (clopidogrel or ticagrelor)

Exclusion Criteria:

Inability to provide written informed consent

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Patients with treatment-related major bleeding event as assessed by the Bleeding Academic Research Consortium (BARC) bleeding criteria
Time Frame: up to 24 months
The major bleeding event was a composite endpoint of BARC bleeding type 3 and 5), defined according to the BARC bleeding criteria, which was used widely in this field. BARC bleeding was defined as follows: BARC type 1, any bleeding that is not actionable; type 2, any overt, actionable sign of bleeding; type 3a, overt bleeding with a haemoglobin drop of 3-5 g/dL or any transfusion; type 3b, overt bleeding with a haemoglobin drop >5 g/dL, requiring vasopressors, surgical intervention, or due to cardiac tamponade; type 3c, any intracranial or intraocular bleeding; and finally type 5, any bleeding resulting in death (type 4 was coronary artery bypass graft-related bleeding, which was excluded). Investigator will get all the information through regular return visit and telephone follow-up after discharge.
up to 24 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Major adverse cardiac events (MACE)
Time Frame: up to 24 months
A composite of death, myocardial infarction, stroke, stent thrombosis, and ischemia-driven revascularization
up to 24 months

Collaborators and Investigators

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

Sponsor

Beijing Anzhen Hospital

Investigators

  • Principal Investigator: Yujie Zhou, PhD,MD, Beijing Anzhen Hospital

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)

December 1, 2018

Primary Completion (Anticipated)

August 31, 2021

Study Completion (Anticipated)

September 30, 2021

Study Registration Dates

First Submitted

November 15, 2018

First Submitted That Met QC Criteria

November 28, 2018

First Posted (Actual)

November 29, 2018

Study Record Updates

Last Update Posted (Actual)

December 8, 2020

Last Update Submitted That Met QC Criteria

December 4, 2020

Last Verified

December 1, 2020

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • gene polymorphism

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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