Heterogeneity of Neointimal Healing Following Biodegradable-polymer Drug-Eluting Coronary Stent Implantation (Healing)

March 3, 2023 updated by: Tomsk National Research Medical Center of the Russian Academy of Sciences
The objective of this study is a comparative evaluation of Orsiro stent and of Resolute Integrity stent in terms of the extent of neointima formation at 4 months after implantation using optical coherence tomography (OCT).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

About 50 patients with clinical evidence of ischemic heart disease and / or a positive functional study and documented stable angina pectoris (Canadian cardiovascular society classification (CCS)1, 2, 3 or 4), or documented silent ischemia in de-novo, native, previously unstented vessel in Tyumen Cardiology Center,will be randomly assigned undergoing implantation of Orsiro stent or Resolute Integrity stent (in a 1:1 ratio).

All of the patients will receive 12 months dual antiplatelet therapy and they will be followed (at the outpatient clinic) for up to 1 year. The follow-up visits will be conducted at 4 months (including angiographic/OCT investigation), and 1 year post percutaneous coronary intervention(PCI),in order to observe the Primary Endpoint and Secondary Endpoints.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
50

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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

  • Russian Federation
      • Tyumen, Russian Federation, 625026
        • Tyumen Cardiology Research Center, Tomsk National Research Medical Center, Russian Academy of Science

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

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;
  • Patients with symptoms of stable angina and/or presence of a positive functional test for ischemia;
  • Patient is eligible for percutaneous coronary intervention (PCI);
  • Patient has been informed of the nature of the study and agrees to its provisions and has provided written informed consent as approved by the Ethical Committee of the respective clinical site.

Exclusion Criteria:

  • Target lesion involving a bifurcation with a side branch ≥2.0 mm in diameter;
  • Target lesion located in the left main stem;
  • Target lesion is located or supplied by an arterial or venous bypass graft;
  • Lesion located very distally, difficult to be imaged by OCT;
  • Co-morbidities that could interfere with completion of study procedures, or life expectancy less than 1 year;
  • Participating in another investigational drug or device trial that has not completed the primary endpoint or would interfere with the endpoints of this study;
  • Patient underwent target vessel revascularization with a DES;
  • Patient presenting with acute myocardial infarction with ST elevation;
  • Cerebrovascular accident within the past 12 months;
  • Acute or chronic renal dysfunction (defined as creatinine greater than 2.0 mg/dl);
  • Patient receiving oral anticoagulants

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: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Orsiro
Implantation of a Orsiro® biolimus a9 eluting coronary stent (drug-eluting stent, DES)
Device: Orsiro stents

Percutaneous coronary intervention with implantation of either:

a Orsiro® biolimus a9 eluting coronary stent
Active Comparator: Resolute Integrity
Implantation of a Resolute Integrity® zotarolimus eluting coronary stent (drug-eluting stent, DES)
Device: Resolute Integrity® stents

Percutaneous coronary intervention with implantation of either:

a Resolute Integrity® zotarolimus eluting coronary stent

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Heterogeneous neointimal healing
Time Frame: 4 ± 1 months
Endothelial coverage by Heterogeneous neointima of the stent struts assessed by optical coherence tomography
4 ± 1 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Malapposed stent struts
Time Frame: 4 ± 1 months
Percentage of malapposed stent struts by optical coherence tomography
4 ± 1 months
Neointimal growth
Time Frame: 4 ± 1 months
Neointimal thickness by optical coherence tomography
4 ± 1 months
Angiographic reference vessel diameter
Time Frame: 4 ± 1 months
Reference diameter of coronary artery by QCA
4 ± 1 months
Clinical composite endpoints
Time Frame: 12 months
Cardiac death/Target vessel MI/Clinically indicated TLR All death/All MI/All TVR (including TLR)
12 months
Stent Thrombosis
Time Frame: 12 months
Definite stent thrombosis
12 months
Uncovered stent struts
Time Frame: 4 ± 1 months
Percentage of uncovered stent struts by optical coherence tomography
4 ± 1 months
Angiographic minimal lumen diameter
Time Frame: 4 ± 1 months
Minimal lumen diameter of coronary artery by QCA;
4 ± 1 months
Angiographic diameter stenosis
Time Frame: 4 ± 1 months
Percent diameter stenosis by QCA;
4 ± 1 months
Binary restenosis
Time Frame: 4 ± 1 months
Binary restenosis by QCA;
4 ± 1 months
Angiographic late lumen loss
Time Frame: 4 ± 1 months
Late lumen loss by QCA;
4 ± 1 months

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Tomsk National Research Medical Center of the Russian Academy of Sciences

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Bessonov S Ivan, Tyumen Cardiology Research Center

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 13, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2021

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 2, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 9, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 10, 2020

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 6, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 3, 2023

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2022

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Healing Stent

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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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