Test Safety and Efficacy of Zotarolimus- and Everolimus-Eluting Stents (ZES/EES) Assessed by Optical Coherence Tomography (ZES/EES-OCT)

May 7, 2012 updated by: Deutsches Herzzentrum Muenchen

RANDOMIZED TRIAL OF ZOTAROLIMUS- AND EVEROLIMUS-ELUTING STENTS REGARDING STENT COVERAGE ASSESSED BY OCT

The objective of the study is to assess the superiority of the everolimus-eluting stent (Endeavor Resolute®) compared with the everolimus-eluting stent (XIENCE V®) regarding uncovered stent strut segments.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

The mid-term efficacy of drug-eluting stents has been well-established, but there is an ongoing debate on the potential of an increased incidence of late stent thrombosis, particularly after discontinuation of thienopyridine therapy, as well as of delayed onset of restenosis or catch-up phenomenon with permanent polymer-based DES. The extent of strut coverage with reduction of exposed thrombogenic material has been shown to be associated with the inflammatory reaction grade and with the incidence of stent thrombosis. The optical coherence tomography (OCT) is an intravascular imaging modality based on light. The principle is similar to intravascular ultrasound, but due to the much shorter wave length of light, it offers a much better resolution up to 10µm, enabling the exact determination of strut coverage, neointimal thickness, vessel size, presence of dissections, and even the presence of inflammation.

Study Type

Interventional

Enrollment (Anticipated)

30

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

  • Germany
    • Bavaria
      • Munich, Bavaria, Germany, 80636
        • Deutsches Herzzentrum Muenchen
      • Munich, Bavaria, Germany, 81675
        • Klinikum Rechts der Isar

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:

  • Patients older than age 18 with ischemic symptoms or evidence of myocardial ischemia in the presence of ≥ 50% stenosis located in native coronary vessels.
  • Written, informed consent by the patient or her/his legally-authorized representative for participation in the study.
  • In women with childbearing potential a negative pregnancy test is mandatory.

Exclusion Criteria:

  • Lesion length >16mm requiring a stent length >18mm
  • Target lesion located in the left main trunk.
  • In-stent restenosis.
  • Acute myocardial infarction
  • Malignancies or other comorbid conditions (for example severe liver, renal and pancreatic disease) with life expectancy less than 12 months or that may result in protocol non-compliance.
  • Known allergy to the study medications: everolimus, zotarolimus, stainless steel or cobalt chrome.
  • Inability to take dual antiplatelet therapy for at least 6 months.
  • Pregnancy (present, suspected or planned) or positive pregnancy test.
  • Previous enrollment in this trial.
  • Patient's inability to fully cooperate with the study protocol.

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: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Arm 1
Everolimus-Eluting Stent
Device: Everolimus-Eluting-Stent
due randomization everolimus-eluting-stent will be implanted
Other Names:
  • Xience-V®
Active Comparator: Arm 2
Zotarolimus-Eluting-Stent
Device: Zotarolimus-Eluting-Stent
due randomization zotarolimus-eluting-stent will be implanted
Other Names:
  • Endeavor Resolute®

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Degree of stent strut coverage assessed by OCT for each visible strut segment
Time Frame: 6-8 months
6-8 months

Secondary Outcome Measures

Outcome Measure
Time Frame
Percentage of malapposed strut assessed by OCT
Time Frame: 6-8 months
6-8 months
Percentage of uncovered malapposed struts assessed by OCT
Time Frame: 6-8 months
6-8 months

Collaborators and Investigators

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

Sponsor

Deutsches Herzzentrum Muenchen

Investigators

  • Principal Investigator: Klaus Tiroch, MD, Deutsches Herzzentrum Muenchen

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

October 1, 2010

Primary Completion (Actual)

December 1, 2011

Study Completion (Anticipated)

July 1, 2012

Study Registration Dates

First Submitted

October 28, 2010

First Submitted That Met QC Criteria

October 28, 2010

First Posted (Estimate)

October 29, 2010

Study Record Updates

Last Update Posted (Estimate)

May 8, 2012

Last Update Submitted That Met QC Criteria

May 7, 2012

Last Verified

May 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GE IDE No. S03210

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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