Hybrid Sirolimus-eluting Versus Everolimus-eluting Stents for Total Coronary Occlusions (PRISON-IV)

August 15, 2026 updated by: R&D Cardiologie

Hybrid Sirolimus-eluting Stent With Bioresorbable Polymer Versus Everolimus-eluting Stent With Durable Polymer for Total Coronary Occlusions in Native Coronary Arteries (PRISON-IV)

Percutaneous recanalization of total coronary occlusions (TCO) was historically hampered by high rates of restenosis and reocclusion. In the PRISON II and III trial we showed landmark reduction in restenosis with sirolimus-eluting stents (Cypher, Cordis Corporation) compared to conventional bare metal stents in TCO. In the PRISON III trial, we observed similar favourable results with second-generation zotarolimus-eluting stent (Resolute, Medtronic Inc.). Another drugs-eluting stent mounted with everolimus (Xience Prime, Abbott) also demonstrated favourable results in TCO. Recently, drug-eluting stents (DES) with bioresorbable polymer coatings were developed, to address safety concerns regarding the observation of very late stent thrombosis, due to hypersensitivity reactions, and chronic inflammation, on the durable polymer coating of DES. However, none of these DES with bioresorbable polymers were evaluated in patients with TCO. The PRISON IV trial is a prospective, randomized, single-blinded, multi-center trial, designed to evaluate the safety, efficacy, and angiographic outcome of hybrid sirolimus-eluting stents with bioresorbable polymers (ORSIRO, Biotronik Inc.) compared to everolimus-eluting stents with durable polymers (Xience Prime, Abbott) in patients with successfully recanalized TCOs.

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

A total of 330 patients are randomized to either hybrid sirolimus-eluting stent or everolimus-eluting stent after successful recanalization of TCO. Clinical follow-up at 1, 6, 12 months, 2, 3, 4, 5 year with angiographic follow-up at 9 months. In 60 patients a optical coherence tomography is performed during the 9 months follow-up angiography. Quantitative coronary and optical coherence tomography analysis is performed by two independent core laboratory. The primary end point is in-segment late luminal loss at 9 month angiographic follow-up. Secondary angiographic end points include the following; in-stent luminal loss, acute recoil, acute gain, net luminal gain, late loss index, minimal lumen diameter, percentage of diameter stenosis, in-stent and in-segment binary restenosis and reocclusions at 9 months angiographic follow-up. Secondary clinical endpoints include a composite of major adverse cardiac events (death, MI and clinically driven target lesion revascularization); clinically driven target vessel revascularisation (TVR), target vessel failure (cardiac death, MI, clinically driven TVR) and stent thrombosis up to 5 year clinical follow-up. Tertiary optical coherence tomography end points at 9 months follow-up are the following: Percentage of uncovered stent struts, percentage of malapposed stent struts, tissue strut thickness, absolute and percentage of intimal hyperplasia.

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.
330

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

  • Belgium
    • Antwerpen
      • Antwerp, Antwerpen, Belgium, 2020
        • Az Middelheim
  • Netherlands
      • Nieuwegein, Netherlands, 3435CM
        • St Antonius hospital
    • Amsterdam
      • Amsterdam, Amsterdam, Netherlands, 1105AZ
        • AMC
    • Eindhoven
      • Eindhoven, Eindhoven, Netherlands, 5602ZA
        • Catharina Ziekenhuis

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

Description

INCLUSION CRITERIA:

  • the estimated duration of the occlusion is at least 4 weeks.
  • signs of ischemia related to the occluded coronary artery.
  • successful recanalization of the occluded artery is achieved.
  • reference diameter is > 2.5 mm.
  • written informed consent obtained.

EXCLUSION CRITERIA:

  • primary or rescue PCI for acute myocardial infarction
  • the lesion could not be crossed.
  • lesions with complex anatomy making successful stent deployment unlikely.
  • the guide wire is not in the true lumen distal to the occlusion.
  • Sirolimus or zotarolimus allergy
  • venous or arterial bypass grafts
  • pregnant or nursing women.
  • participation in an other trial.
  • factors making long-term follow-up difficult or unlikely.
  • life expectancy < 1 year.
  • contraindications for ASA or Clopidogrel or heparin.
  • use of coumadins that could not be stopped before the procedure.

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.
Experimental: Hybrid sirolimus-eluting stents
ORSIRO, Biotronik Inc.
Device: Hybrid sirolimus- and everolimus-eluting stents (ORSIRO, XIENCE PRIME)
Recanalization of totally occluded coronary arteries
Other Names:
  • Hybrid sirolimus-eluting stents (ORSIRO, Biotronik)
  • Everolimus-eluting stents (XIENCE PRIME, Abbott)
Active Comparator: Everolimus-eluting stents
XIENCE PRIME, Abbott
Device: Hybrid sirolimus- and everolimus-eluting stents (ORSIRO, XIENCE PRIME)
Recanalization of totally occluded coronary arteries
Other Names:
  • Hybrid sirolimus-eluting stents (ORSIRO, Biotronik)
  • Everolimus-eluting stents (XIENCE PRIME, Abbott)

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
Time Frame
In-segment late luminal loss at 9 months as assessed by an independent angiographic core lab.
Time Frame: 9 month
9 month

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
Stent thrombosis (acute, <1day; subacute, 1 to 30 days; and late, >30 days)
Time Frame: 30 days
30 days
In-stent late luminal loss
Time Frame: 9 month
9 month
In-stent and in-segment binary restenosis rate
Time Frame: 9 month
9 month
In-stent and in-segment minimal lumen diameter
Time Frame: 9 month
9 month
Percentage diameter stenosis
Time Frame: 9 month
9 month
A composite of major adverse cardiac events (MACE: death, myocardial infarction and clinically driven target lesion revascularization)
Time Frame: 9 month
9 month
Target vessel failure (cardiac death, MI, clinically driven target vessel revascularisation) up to 5 year of clinical follow-up.
Time Frame: 5 years
5 years
% of uncovered stent struts, % of malapposed stent struts, tissue strut thickness (µm), absolute volume (mm³) and % of intimal hyperplasia
Time Frame: 9 month
Assessed by optical coherence tomography
9 month

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.
R&D Cardiologie

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Biotronik SE & Co. KG

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: Maarten J. Suttorp, MD, PhD, St. Antonius Hospital

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)

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.
February 1, 2012

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.
February 1, 2016

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, 2020

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).
November 15, 2011

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.
January 24, 2012

First Posted (Estimated)

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.
January 25, 2012

Study Record Updates

Last Update Posted (Actual)

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.
August 18, 2026

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.
August 15, 2026

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.
August 1, 2026

More Information

Terms related to this study

Keywords

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.
  • RDC-2011-02

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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