The CONFORMAL Early Feasibility Study

Running, not enrolling · Not applicable

Conditions studied: Non-valvular Atrial Fibrillation

In brief

An evaluation of the safety and performance of the Conformal Left Atrial Appendage Seal for Left Atrial Appendage Occlusion

Key facts

Study ID

NCT03616028

Run by

Conformal Medical, Inc

People needed

64

Starts

2019-02-22

Expected to finish

2028-06-01

Last updated by the study team

2026-02-13

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Male or non-pregnant female aged ≥18 years
• Documented non-valvular AF (paroxysmal, persistent, or permanent)
• High risk of stroke or systemic embolism, defined as CHA2DS2-VASc score of ≥ 2 for men and ≥ 3 for women
• The patient is recommended for oral anticoagulation therapy (OAC), but has an appropriate rationale to seek a non-pharmacologic alternative to chronic oral anticoagulation
• The patient deemed appropriate for LAA closure by the Site P.I. and a non-interventional physician using an evidenced-based decision-making tool on oral anticoagulants consistent with standard of care.
• The patient is willing and able to comply with the protocol-specified medication regimen and follow-up evaluations
• The patient (or legally authorized representative, (where allowed)) has been informed of the nature of the study, agrees to its provisions, and has provided written informed consent approved by the appropriate Institutional Review Board (IRB) or Ethics Committee (EC)
• General Exclusion Criteria
• Pregnant or nursing patients and those who plan pregnancy in the period up to 1 year following the index procedure. Female patients of childbearing potential must have a negative pregnancy test (per site standard test) within 7 days prior to index procedure.
• Anatomic conditions that would prevent performance of an LAA occlusion procedure (e.g., prior atrial septal defect [ASD] or patient foramen ovale [PFO] surgical repair or implanted closure device, or obliterated or ligated left atrial appendage)
• Atrial fibrillation that is defined by a single occurrence or that is transient or reversible (e.g., secondary thyroid disorders, acute alcohol intoxication, trauma, recent major surgical procedures)
• Patients with a medical condition (other than atrial fibrillation) that mandates chronic oral anticoagulation (e.g., history of unprovoked deep vein thrombosis or pulmonary embolism, or mechanical heart valve)
• History of bleeding diathesis or coagulopathy, or patients in whom antiplatelet and/or anticoagulant therapy is contraindicated
• Active infection with bacteremia
• Documented symptomatic carotid artery disease (>50% diameter stenosis with prior ipsilateral stroke or TIA) or known asymptomatic carotid artery disease (diameter stenosis of >70%)
• Recent (within 30 days pre-procedure) or planned (within 60 days post-procedure) cardiac or non-cardiac interventional or surgical procedure
• Recent (within 90 days pre-procedure) stroke or transient ischemic attack.
• Recent (within 60 days pre-procedure) myocardial infarction
• Vascular access precluding delivery of implant with catheter-based system
• Severe heart failure (New York Heart Association Class III or IV)
• Prior cardiac transplant, history of mitral valve replacement or transcatheter mitral valve intervention, or any mechanical valve implant
• Renal insufficiency, defined as estimated glomerular filtration rate (eGFR) <30 mL/min/1.73 m2 (by the Modification of Diet in Renal Disease equation), or dialysis at the time of screening
• Platelet count <75,000 cells/mm3 or >700,000 cells/mm3, or white blood cell count <3,000 cells/mm3
• Patient has a known allergy, hypersensitivity or contraindication to aspirin, heparin, or device materials (e.g., nickel, titanium, gold) or that would preclude any P2Y12 inhibitor therapy, or the patient has contrast sensitivity that cannot be adequately pre-medicated
• Current participation in another investigational drug or device study

Where it is running

• St. Bernards Medical Center — Jonesboro, Arkansas, United States
• Pacific Heart Institute — Santa Monica, California, United States
• Catholic Medical Center — Manchester, New Hampshire, United States
• Mount Sinai — New York, New York, United States
• Columbia University Medical Center/NYPH — New York, New York, United States
• The Christ Hospital — Cincinnati, Ohio, United States
• Lankenau Heart Institute — Wynnewood, Pennsylvania, United States
• Erlanger Health System — Chattanooga, Tennessee, United States
• Vanderbilt University Medical Center — Nashville, Tennessee, United States
• Texas Cardiac Arrhythmia Institute — Austin, Texas, United States
• Baylor Scott & white Research Institute — Plano, Texas, United States

Full record on ClinicalTrials.gov

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