BioFreedom Ultra Registry

September 20, 2022 updated by: Professor Bryan Ping Yen YAN, Chinese University of Hong Kong

BioFreedom Ultra Stent in Hong Kong All Comers Registry

Over the past three decades, coronary stent struts have been made progressively thinner. Thin strut drug-eluting stents (DES) performed better than their thicker counterparts in a recent study. Thinner struts discourage abnormal coronary flow after implantation and associated with greater flexibility, deliverability and better clinical outcomes. Lower strut thickness may be particularly advantageous in small target vessels because thicker struts and smaller minimum in-stent lumen diameter are independent predictors of in-stent restenosis.

BioFreedom Ultra is a thin strut (84μm), cobalt-chromium, carrier-free drug-coated stent with Biolimus A9 drug. The BioFreedom Ultra stent is intended for percutaneous coronary intervention (PCI) for high-bleeding-risk (HBR) patients treated with 1-month dual antiplatelet therapy. BioFreedom Ultra received CE mark in October 2020 supported by the LEADERS FREE III trial which enrolled 400 HBR patients using the same inclusion criteria as the LEADERS FREE randomized trial. LEADERS FREE III is a single-arm trial, with all patients treated using the BioFreedom Ultra stent. The data was compared to the BioFreedom stainless steel drug-coated stent (DCS-StS) and bare-metal stent (BMS) groups from LEADERS FREE. The primary safety endpoint of the trial was a composite of cardiac death, myocardial infarction, or definite/probable stent thrombosis. The primary efficacy endpoint was clinically driven target lesion revascularization. The study found that the BioFreedom Ultra was non-inferior to the DCS-StS for safety and superior to the BMS for efficacy. Definite or probable stent thrombosis at 1 year in this HBR population was only 1%. Recently, the Biofreedom QCA randomized trial compared the Biofreedom Ultra with the stainless steel version (DCS-StS) in an all-comer population. In this prospective, single-blind non-inferiority randomized (1:1) trial, BioFreedom Ultra was non-inferiority for late lumen loss at 9 months in comparison with DCS-StS.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Anticipated)

300

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

  • Hong Kong
    • New Territories
      • Shatin, New Territories, Hong Kong
        • Recruiting
        • Prince of Wales Hospital
        • Contact:

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

N/A

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Being an observational registry aiming to quantify effect estimates without direct comparisons to other devices, we used confidence interval profiling for sample size justification. Assuming an 8.43% MACE rate at 1 year [5], 95% confidence intervals computed with the adjusted Wald method would be 5.4% to 11.5% for a 300 patient sample. Given that the registry aims to reflect real-world patients and practice, 300 patients will be enrolled in this registry.

Description

Inclusion Criteria:

This is an "all comers" registry and patient who will be enrolled have to meet following criteria:

  • Patient must be at least 18 years of age

  • Patient must have indication to percutaneous coronary intervention including:

    • Stable angina or evidence of myocardial ischemia with stress echocardiography/ myocardial SPECT/exercise test, or
    • Unstable angina / non ST-elevation myocardial infarction, OR
    • ST-elevation myocardial infarction with de novo culprit lesion.
  • Presence of one or more coronary artery stenosis >50% with reference diameter 2.0-6.0mm which can be covered by one or multiple stents

Exclusion Criteria:

  • Known intolerance to any of the device components
  • Inability to provide written informed consent
  • Participating in other trial before reaching primary endpoint
  • Planned surgery within 1 month of PCI unless dual antiplatelet therapy is maintained throughout the peri-surgical period.

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

  • Observational Models: Other
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
MACE events
Time Frame: 12 months post index procedure
12-months cumulative hierarchical incidence of major adverse cardiac events (MACE) defined as: cardiac death, non-fatal myocardial infarction (MI) and clinically indicated target vessel revascularization (TVR). In order to minimize bias in assessing MACE outcomes, these events will be adjudicated by an independent observer.
12 months post index procedure

Collaborators and Investigators

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

Sponsor

Chinese University of Hong Kong

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)

October 11, 2021

Primary Completion (Anticipated)

April 1, 2028

Study Completion (Anticipated)

July 1, 2028

Study Registration Dates

First Submitted

October 17, 2021

First Submitted That Met QC Criteria

October 25, 2021

First Posted (Actual)

October 26, 2021

Study Record Updates

Last Update Posted (Actual)

September 22, 2022

Last Update Submitted That Met QC Criteria

September 20, 2022

Last Verified

September 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2021.459

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

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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