- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04193826
The Conformal Prague Study
February 6, 2024 updated by: Conformal Medical, Inc
The Conformal Prague Study: An Evaluation of the Safety and Performance of the Conformal Left Atrial Appendage Seal for Left Atrial Appendage Occlusion
A prospective, single center, open-label, single arm, study to evaluate the safety and technical performance of the CLAAS system for closure of the left atrial appendage.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
The primary objective of the study is to evaluate feasibility of ICE as primary imaging modality for device success in patients with non-valvular atrial fibrillation at increased risk for stroke and systemic embolism who are recommended for oral anticoagulation (OAC) therapy but have an appropriate rationale to seek a non-pharmacological alternative to OAC.
TEE will be used to confirm the ICE evaluation.
Study Type
Interventional
Enrollment (Actual)
19
Phase
- Not Applicable
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
-
-
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Prague, Czechia
- Na Homolce
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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 to 90 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- 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 a CHA2DS2-VASc score of ≥ 2
- 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 is willing and able to comply with the protocol-specified medication regimen and follow-up evaluations
- The patient (or legally authorized representative) has been informed of the nature of the study, agrees to its provisions, and has provided written informed consent approved by the appropriate Ethics Committee (EC)
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 patent 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 of index procedure) or planned (within 60 days post-procedure) cardiac or non-cardiac interventional or surgical procedure
- Recent (within 90 days of index procedure) stroke, transient ischemic attack
- Recent myocardial infarction within 60 days of index procedure
- 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 <100,000 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, clopidogrel, prasugrel, ticagrelor, or device materials (e.g., nickel, titanium, gold), or the patient has contrast sensitivity that cannot be adequately pre-medicated
- Current participation in another investigational drug or device study that interferes with this study
- Patient is a prisoner
- Known other medical illness or known history of substance abuse that may cause non-compliance with the protocol or protocol-specified medication regimen, confound the data interpretation, or is associated with a life expectancy of less than 1 year
- Patient has a condition which precludes adequate transesophageal echocardiographic (TEE) assessment
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: Non-valvular AF adults
Left atrial appendage closure (LAAC) with the Conformal LAAC device will be performed according to the device Instructions for Use, based on ICE and angiographic guidance, femoral venous access and inter-atrial septum crossing.
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Closure of the left atrial appendage (LAAC) is performed percutaneously.
Implantation of the LAAC device will be performed according to device specific instructions for use based on both TEE guidance, ICE and angiography, femoral access and inter-atrial septum crossing
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Freedom from Major Adverse Events
Time Frame: 7 days post-procedure
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Major adverse events defined as: All cause mortality, ischemic stroke, systemic thromboembolism, device or procedure-related adverse events requiring open cardiac surgery or major endovascular intervention.
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7 days post-procedure
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Closure Success
Time Frame: 45-days post-procedure
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Closure success, defined as device success followed by complete closure or peri-device residual leak ≤5 mm in width
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45-days post-procedure
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
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.
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 19, 2019
Primary Completion (Actual)
October 30, 2022
Study Completion (Actual)
December 31, 2022
Study Registration Dates
First Submitted
December 6, 2019
First Submitted That Met QC Criteria
December 9, 2019
First Posted (Actual)
December 10, 2019
Study Record Updates
Last Update Posted (Actual)
February 8, 2024
Last Update Submitted That Met QC Criteria
February 6, 2024
Last Verified
February 1, 2024
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 19-101
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
Yes
product manufactured in and exported from the U.S.
Yes
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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