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View on ClinicalTrials.gov

Comparing 3 approaches for severe aortic stenosis

Official title: ALLIANCE: Safety and Effectiveness of the SAPIEN X4 Transcatheter Heart Valve

Safety and Effectiveness of Balloon-Expandable Bioprosthetic SAPIEN X4 Transcatheter Heart Valve

Condition: Aortic Stenosis, SevereSponsor: Edwards LifesciencesTarget enrollment: 1234
  • 3 groups
  • Sites in Vancouver, Hamilton and 1 more city
  • Recruiting
St. Paul's Hospital System, Vancouver, British ColumbiaHamilton Health Services, Hamilton, OntarioInstitut Universitaire de Cardiologie et de Pneumologie de Quebec- Universite Laval, Québec, Quebec

Interventions

  • Medical device

    SAPIEN X4 THV

    Implantation of the SAPIEN X4 valve

  • Medical device

    SAPIEN X4S

    Implantation of the SAPIEN X4S valve

Canadian Sites (3)

3 listed, none recruiting

  • St. Paul's Hospital System

    Vancouver, British Columbia

    Not currently recruiting
  • Hamilton Health Services

    Hamilton, Ontario

    Not currently recruiting
  • Institut Universitaire de Cardiologie et de Pneumologie de Quebec- Universite Laval

    Québec, Quebec

    Not currently recruiting

Eligibility Criteria

See who this study is looking for35 criteria

The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.

Inclusion

  • +Severe, calcific AS
  • +Native aortic annulus size suitable for SAPIEN X4 THV
  • +NYHA functional class ≥ II
  • +The subject has been informed of the nature of the study, agrees to its provisions and has provided written informed consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more →.

Exclusion

  • Absolute contraindications or allergy to iodinated contrast that cannot be adequately treated with premedication
  • Anatomical characteristics that would preclude safe femoral placement of the introducer sheath or safe passage of the delivery system
  • Aortic valve is unicuspid, bicuspid or non-calcified
  • Pre-existing mechanical or bioprosthetic valve in any position
  • Severe aortic regurgitation (\> 3+)
  • Severe mitral regurgitation (\> 3+) or ≥ moderate mitral stenosis
  • Need for mitral, tricuspid or pulmonic valve intervention within the next 12 months
  • Left ventricular ejection fraction \< 20%
  • Cardiac imaging evidence of intracardiac mass, thrombus or vegetation
  • Left ventricular outflow tract calcification that would increase the risk of annular rupture or significant PVL after THV implantation
  • Increased risk of coronary artery obstruction after THV implantation
  • Myocardial infarction within 30 days prior to the study procedure
  • Hypertrophic cardiomyopathy with subvalvular obstruction
  • Subjects with planned concomitant ablation for atrial fibrillation
  • Complex coronary artery disease (CAD) that cannot be optimally treated by percutaneous coronary intervention (PCI)
  • Any surgical or transcatheter procedure within 30 days prior to the study procedure (unless part of planned strategy for treatment of CAD). Implantation of a permanent pacemaker or implantable cardioverter defibrillator (ICD) is not considered an exclusionExclusion criteriaThe things that would prevent someone from taking part.Read more →.
  • Any planned surgical or transcatheter intervention to be performed within 30 days following the study procedure (unless part of planned strategy for treatment of CAD)
  • Endocarditis within 180 days prior to the study procedure
  • Stroke, transient ischemic attack or neurological signs and symptoms attributed to carotid or vertebrobasilar disease within 90 days prior to the study procedure
  • Hemodynamic or respiratory instability requiring inotropic or mechanical support within 30 days prior to the study procedure
  • Renal insufficiency and/or renal replacement therapy
  • Leukopenia, anemia, thrombocytopenia
  • Inability to tolerate or condition precluding treatment with antithrombotic therapy
  • Hypercoagulable state or other condition that increases risk of thrombosis
  • Subject refuses blood products
  • BMI \> 50 kg/m2
  • Estimated life expectancy \< 24 months
  • Active SARS-CoV-2 infection or previously diagnosed with COVID-19 with sequelae that could confound endpointEndpointThe specific thing a study measures to answer its question.Read more → assessments
  • Participating in another investigational drug or device study that has not reached its primary endpointPrimary endpointThe single main question the study is designed to answer.Read more →
  • Subject considered to be part of a vulnerable population
  • Female who is pregnant or lactating
5 concepts to explore on this page · up to 1,300 pointsTap any term to learn what it means.

In plain language

Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.

Learning 
What this study is

This study is testing a treatment for a condition.

This study is not organised into the usual phase numbers — that is common for device, behavioural, and diagnostic research.

From the trial registry

Built from these fields:

  • designModule.designInfo.primaryPurpose
  • designModule.phases
Who receives what

There are 3 groups in this study.

Groups A and B receive SAPIEN X4 THV.

Registry label: A: TAVR - Main Cohort · B: TAVR - Bicuspid Registry

Group C receives SAPIEN X4S.

Registry label: C: TAVR - X4S Registry

From the trial registry

Built from these fields:

  • armsInterventionsModule.armGroups[].label
  • armsInterventionsModule.armGroups[].type
  • armsInterventionsModule.armGroups[].interventionNames
How the study is run

Groups are assigned by the study team using set rules, rather than by chance.

This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.

From the trial registry

Built from these fields:

  • designModule.designInfo.allocation
  • designModule.designInfo.maskingInfo.masking
Is there a placebo?

This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.

From the trial registry

Built from these fields:

  • armsInterventionsModule.armGroups[].type
  • armsInterventionsModule.armGroups[].interventionNames
Who the study is looking for

The study is open to people of any sex.

The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.

These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.

From the trial registry

Built from these fields:

  • eligibilityModule.sex
  • eligibilityModule.healthyVolunteers
How big and how long

The study aims to enrol about 1,234 people.

The study is currently expected to finish around January 2037.

The main measurement is taken over: 1 year.

From the trial registry

Built from these fields:

  • designModule.enrollmentInfo.count
  • statusModule.completionDateStruct.date
  • outcomesModule.primaryOutcomes[].timeFrame
What the study measures

Non-hierarchical composite of death and stroke — measured over 1 year.

From the trial registry

Built from these fields:

  • outcomesModule.primaryOutcomes[].measure
  • outcomesModule.primaryOutcomes[].timeFrame

Source: NCT05172960 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.

Not medical advice. What do these terms mean?

What is being tested — in plain terms

About SAPIEN X4 THVDevice

Implantation of the SAPIEN X4 valve

From the trial registry — its own words, unedited.

What a device is here: A physical instrument, implant, app or piece of equipment being studied.

Read the full explanation → · in clinical review

About SAPIEN X4SDevice

Implantation of the SAPIEN X4S valve

From the trial registry — its own words, unedited.

What a device is here: A physical instrument, implant, app or piece of equipment being studied.

Read the full explanation → · in clinical review

Common questions

Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.

Am I eligible for this trial?

Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.

The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.

The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.

From the trial registry
  • eligibilityModule.eligibilityCriteria
Is there a placebo?

This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.

From the trial registry
  • armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?

This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.

Groups are assigned by the study team using set rules, rather than by chance.

From the trial registry
  • designModule.designInfo.maskingInfo.masking
  • designModule.designInfo.allocation
Who can join?

It is open to people of any sex.

It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.

Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.

From the trial registry
  • eligibilityModule.sex
  • eligibilityModule.healthyVolunteers
How long would this take?

The study's main measurement is taken over: 1 year.

The study as a whole is currently expected to finish around 2037-01.

How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.

From the trial registry
  • outcomesModule.primaryOutcomes[].timeFrame
  • statusModule.completionDateStruct.date
How many people are taking part?

The study aims to enrol about 1,234 people.

From the trial registry
  • designModule.enrollmentInfo.count
Where is this happening?

This study lists 10 locations, including: Vancouver, British Columbia, Canada; Hamilton, Ontario, Canada; Québec, Quebec, Canada; Detroit, Michigan, United States; Rochester, Minnesota, United States; Saint Cloud, Minnesota, United States, and 4 more.

Sites can open and close during a study, so confirm with the team before travelling.

From the trial registry
  • trial_locations

About This Trial

The objective of this study is to establish the safety and effectiveness of the Edwards SAPIEN X4/X4S Transcatheter Heart Valve (THV) in subjects with symptomatic, severe, calcific aortic stenosis (AS).

Other Sites (9)

Henry Ford Hospital

Detroit, Michigan, United States

Mayo Clinic Rochester

Rochester, Minnesota, United States

CentraCare Heart and Vascular Center

Saint Cloud, Minnesota, United States

St. Patrick Hospital

Missoula, Montana, United States

University at Buffalo - Kaleida Health

Buffalo, New York, United States

Cornell Medical Center

New York, New York, United States

Columbia University Medical Center/NYPH

New York, New York, United States

Montefiore Medical Center

New York, New York, United States

University of Washington Seattle

Seattle, Washington, United States

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This page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.