RecruitingAortic Valve InsufficiencyAortic Valve Stenosis
ALLIANCE AVIV: Safety and Effectiveness of the SAPIEN X4 Transcatheter Heart Valve in Failing Aortic Bioprosthetic Valves
Eligible age
All ages
Accepts
All genders
Locations
19 states
Healthy volunteers
No
See if you qualify for this study
Answer a few quick questions about your location and health. Takes about a minute.
About this study
The objective of this study is to establish the safety and effectiveness of the Edwards SAPIEN X4/X4S Transcatheter Heart Valve (THV) in subjects who are at high or greater risk with a failing aortic bioprosthetic valve.
Sponsor: Edwards Lifesciences
You may qualify if…
- ✓ 1. Failing aortic bioprosthetic valve demonstrating ≥ moderate stenosis and/or ≥ moderate insufficiency
- ✓ 2. Bioprosthetic valve size suitable for SAPIEN X4 THV
- ✓ 3. NYHA functional class ≥ II
- ✓ 4. Heart Team agrees the subject is at high or greater surgical risk
- ✓ 5. The subject has been informed of the nature of the study, agrees to its provisions and has provided written informed consent.
You may not qualify if…
- ✕ 1. Anatomical characteristics that would preclude safe femoral placement of the introducer sheath or safe passage of the delivery system
- ✕ 2. Failing valve has moderate or severe paravalvular regurgitation
- ✕ 3. Failing valve is unstable, rocking, or not structurally intact
- ✕ 4. Known severe patient-prosthesis mismatch or bioprosthetic valve with residual mean gradient \> 20 mmHg at the end of the index procedure for implantation of the original valve
- ✕ 5. Increased risk of THV embolization
- ✕ 6. Surgical or transcatheter valve in the mitral position
- ✕ 7. Severe mitral regurgitation (\> 3+) or ≥ moderate mitral stenosis
- ✕ 8. Need for mitral, tricuspid or pulmonic valve intervention within the next 12 months
Where it's recruiting
California
Newport Beach · San Francisco · Stanford
Colorado
Loveland
Florida
Naples
Georgia
Atlanta
Illinois
Evanston · Lisle
Kansas
Wichita
Maryland
Baltimore
Massachusetts
Boston
Michigan
Detroit
Minnesota
Rochester
New Jersey
Morristown · New Brunswick · Ridgewood
New York
Buffalo · New York · Rochester
Source: ClinicalTrials.gov · NCT05172973 · last updated 2026-07-27