Restenosis Intrastent: Bioresorbable Vascular Scaffolds Treatment With Scoring Balloon Pre-dilatation (RIBS VI Scoring)

March 2, 2017 updated by: Fernando Alfonso, Spanish Society of Cardiology

Prospective Study of Bioresorbable Vascular Scaffold Treatment With Scoring Balloon Pre-dilatation in Patients With In-stent Restenosis

Treatment of patients with in-stent restenosis (ISR) remains a challenge. This study will assess the efficacy of Bioresorbable Vascular Scaffolds (BVS) (Abbott Vascular) in the treatment of patients suffering from ISR after scoring balloon pre-dilatation.

Study Overview

Detailed Description

Treatment of patients with ISR remains a challenge. Currently both drug-eluting stents (DES) and drug-coated balloons (DCB) are considered as the strategies of choice in this setting. However, data on the value of BVS in patients with ISR is scarce. BVS are very effective to inhibit neointimal proliferation and they avoid the need of implanting a new permanent metal layer. Accordingly, currently, there is a major interest to elucidate the potential value of BVS in patients with ISR. The use of scoring balloon pre-dilatation has not been studied previously in this setting.

This prospective Spanish multicenter study will assess the clinical and angiographic outcome of patients with ISR treated with BVS with scoring balloon pre-dilatation. BVS will be implanted in selected patients (fulfilling inclusion and exclusion criteria) presenting with either BMS-ISR or DES-ISR. Care will be paid to ensure device optimization. Scoring balloon pre-dilatation is mandatory. Angiographic follow-up will be obtained at 6-9 months. A centralized angiographic corelab will be used to provide QCA measurements. Clinical follow-up will be also obtained at 1 year and then yearly. Clinical events will be adjudicated by an independent Clinical Event Committee.

Study Type

Interventional

Enrollment (Anticipated)

100

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

      • Barcelona, Spain, 08036
        • Recruiting
        • Hospital Clínic de Barcelona
      • Barcelona, Spain, 08025
        • Recruiting
        • Hospital de la Santa Creu i Sant Pau
      • Granada, Spain, 18014
        • Recruiting
        • Hospital Universitario Virgen de las Nieves
      • Madrid, Spain, 28041
        • Recruiting
        • Hospital Universitario 12 de Octubre
      • Madrid, Spain, 28006
        • Recruiting
        • Hospital Universitario de La Princesa
    • A Coruña
      • Santiago de Compostela, A Coruña, Spain, 15006
        • Recruiting
        • Complexo Universitario Hospitalario de Santiago
    • Asturias
      • Oviedo, Asturias, Spain, 33006
        • Recruiting
        • Hospital Central de Asturias
    • Barcelona
      • L´Hospitalet de Llobregat, Barcelona, Spain, 08907
        • Recruiting
        • Hospital Universitari de Bellvitge
    • Madrid
      • Majadahonda, Madrid, Spain, 28222
        • Recruiting
        • Hospital Universitario Puerta de Hierro
    • Santa Cruz de Tenerife
      • San Cristobal de La Laguna, Santa Cruz de Tenerife, Spain, 38320
        • Recruiting
        • Hospital Universitario de Canarias

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

20 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

In-stent restenosis with ischemia. Signed Informed Consent IRB approval

INCLUSION CRITERIA:

PATIENT

  • Age > 20 and < 85 years of age
  • Acceptance of late angiographic evaluation
  • Angina or objective evidence of ischemia

LESION

  • ISR (>50% diameter stenosis on visual assessment)
  • Previous stent location known

EXCLUSION CRITERIA:

PATIENT

  • Inclusion in other clinical research protocol
  • Allergy to antiplatelet agents
  • Women in childbearing age
  • Severe associated systemic diseases (including renal or liver failure) or diseases affecting life expectancy
  • Recent myocardial infarction
  • Time from index stent implantation < 1 month
  • Anticipated difficulties for late angiographic evaluation

LESION

  • Stent thrombosis or large thrombus within the stent
  • Angiographic failure during initial stent implantation or persistence or large dissection.
  • Severe tortuosity or calcification or major difficulties during previous stent implantation
  • Vessel diameter < 2.25 mm (visual assessment)
  • Stenosis outside stent stent edge (edge ISR are eligible)
  • Very diffuse ISR (>30 mm in length)

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: BVS implantation in patients with ISR
BVS implantation in patients with ISR after scoring balloon pre-dilatation

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Minimal lumen diameter as assessed by quantitative coronary angiography at late angiographic follow-up
Time Frame: angiographic follow-up at 6-9 months
This is a single arm study and results will be analyzed this arm. However, the angiographic and clinical results will be also compared with those obtained in other arms of previous RIBS trials. In particular results will be compared with those found in the RIBS VI study.
angiographic follow-up at 6-9 months
Combined clinical end-point (cardiac death, myocardial infarction and target vessel revascularization)
Time Frame: 1 year of clinical follow-up

This is a well-accepted outcome measure of individual clinical end-points. Definition of myocardial infarction is similar to that used in previous RIBS studies.

The occurrence of ANY of these events will qualify for the combined event. That is, Cardiac death OR Myocardial Infarctio OR target vessel revascularization. (for the cobined end point the first event will be censored for each patient and other subsequent events will not apply). For time related statistics, the first event will be censored in the KM curves. In addition to that, the time and occurrence of each individual event will be also analyzed.

The same strategy will be followed for the other combined clinical outcome measures that, again, are classically defined in this field.

1 year of clinical follow-up

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Target-lesion failure (defined as cardiac death, target-vessel myocardial infarction, or ischemia-driven target-lesion revascularization)
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
This is a well-accepted outcome measure of individual clinical end-points
1 year, 2 years, 3 years, 4 years, 5 years
Cardiac death
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Total mortality
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Myocardial infarction
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Target vessel revascularization
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Target lesion revascularization
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Stent thrombosis
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Major bleeding
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years
Individual clinical outcome
1 year, 2 years, 3 years, 4 years, 5 years
Minimal lumen diameter
Time Frame: procedure
Acute angiographic parameter
procedure
Percent diameter stenosis
Time Frame: procedure
Acute angiographic parameter
procedure
Restenosis rate
Time Frame: 6-9 months
Late angiographic parameter
6-9 months
Percent diameter stenosis
Time Frame: 6-9 months
Late angiographic parameter
6-9 months
Late loss
Time Frame: 6-9 months
Change in minimal lumen diameter from the final procedure to the follow-up angiogram at 6-9 months. Late angiographic parameter.
6-9 months
Loss index
Time Frame: 6-9 months
Late angiographic parameter
6-9 months
Acute gain
Time Frame: procedure
Change in the minimal lumen diameter from baseline to the final procedural angiogram. Acute angiographic parameter
procedure
Net gain
Time Frame: 6-9 months
Is the difference between acute gain and late loss. Late angiographic parameter
6-9 months
Combined clinical outcome measure (cardiac death, myocardial infarction, target lesion revascularization)
Time Frame: 1 year, 2 years, 3 years, 4 years, 5 years

This is a well-accepted outcome measure of individual clinical end-points. Definition of myocardial infarction is similar to that used in previous RIBS studies. The occurrence of ANY of these events will qualify for the combined event. That is, Cardiac death OR Myocardial Infarctio OR target vessel revascularization. (for the cobined end point the first event will be censored for each patient and other subsequent events will not apply). For time related statistics, the first event will be censored in the KM curves. In addition to that, the time and occurrence of each individual event will be also analyzed.

The same strategy will be followed for the other combined clinical outcome measures that, again, are classically defined in this field.

1 year, 2 years, 3 years, 4 years, 5 years

Collaborators and Investigators

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

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)

January 1, 2016

Primary Completion (Anticipated)

December 1, 2017

Study Completion (Anticipated)

December 1, 2021

Study Registration Dates

First Submitted

February 27, 2017

First Submitted That Met QC Criteria

February 27, 2017

First Posted (Actual)

March 3, 2017

Study Record Updates

Last Update Posted (Actual)

March 3, 2017

Last Update Submitted That Met QC Criteria

March 2, 2017

Last Verified

March 1, 2017

More Information

Terms related to this study

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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