Can the Lambre Device Occlude IRRegular And Large Appendages in Patients With Non-Valvular AF

Atrial Fibrillation Clinical Trial

— CORRAL-AF  

Official title:

Can the Lambre Device Occlude IRRegular And Large Appendages in Patients With Non-Valvular AF: The CORRAL-AF Study

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT04684212
• Other study ID #: G-200316
• Status: Not yet recruiting
• Phase: N/A
• Start date: December 1, 2024
• Est. completion date: December 1, 2034

Study information

• Verified date: April 2024
• Source: Henry Ford Health System
• Contact: Brian O'Neill, MD
• Phone: 313-916-8708
• Email: boneil3[@]hfhs.org
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The primary objective is to demonstrate the safety and efficacy of the implantation of the LAmbre PlusTM device in patients with large or irregularly shaped appendages with non-valvular atrial fibrillation who are at increased risk for stroke and systemic embolism compared to oral anticoagulation (OAC).

Description:

This prospective, randomized, multicenter study will enroll 2,931 subjects (2706 randomized subjects, 225 roll-in subjects) at up to 75 investigational sites in the United States. Patients presenting with non-valvular atrial fibrillation who are at increased risk for stroke and systemic embolism based on CHA2DS2-VASc scores, and who are recommended for oral anticoagulation therapy but have an appropriate rationale to seek a non-pharmacologic alternative to oral anticoagulation, and who meet all eligibility criteria will be enrolled in the study.

Subjects will have clinical follow-up in-hospital and at 45 days, 6 months, 12 months, and annually up to 5-years. CT/Imaging or Transesophageal echocardiographic (TEE) follow-up will occur at 45 days and TEE at 1-year.

The LAmbre PlusTM Left Atrial Appendage (LAA) Closure System is intended to reduce the risk of thromboembolism from the left atrial appendage (LAA) in patients with nonvalvular atrial fibrillation who:

• Are at increased risk for stroke and systemic embolism based on CHADS2 or CHA2DS2-VASc scores and are recommended for oral anticoagulation (OAC) therapy; AND

• Are deemed by their physician to be suitable for OAC; AND

• Have an appropriate rationale to seek a non-pharmacological alternative to OAC, taking into account the safety and effectiveness of the device compared to OAC

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 2931
• Est. completion date: December 1, 2034
• Est. primary completion date: December 1, 2029
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Potential subjects must meet ALL of the following criteria to be eligible for inclusion in the study:

Inclusion Criteria:

1. The patient is a male or non-pregnant female =18 years of age

2. The patient has documented paroxysmal, persistent, or permanent non-valvular atrial fibrillation or flutter

3. The patient has a CHADS2 score = 2 or a CHA2DS2-VASc score of = 3, and is recommended for oral anticoagulation therapy

4. The patient is deemed by their physician to be suitable for short-term OAC, but there is an appropriate rationale for seeking a non-pharmacologic alternative to oral anticoagulation

5. The patient is deemed suitable for LAA closure in a shared decision model with a non-implanting physician

6. The patient is willing and able to comply with protocol-specified treatment and follow-up evaluations

7. The patient (or his or her legally authorized representative) has been informed of the nature of the study, agrees to its provisions, and has been provided written informed consent approved by the appropriate Institutional Review Board (IRB) or Ethics Committee (EC)

Potential subjects will be excluded if ANY of the following conditions apply:

Exclusion Criteria:

1. Pregnant or nursing patients and those who plan pregnancy in the period up to 1 year following index procedure. Female patients of childbearing potential must have a negative pregnancy test done within 7 days prior to index procedure per site standard test

2. Patients with atrial fibrillation that is defined by a single occurrence, or that is transient or reversible (e.g., secondary to CABG, an interventional procedure, pneumonia, or hyperthyroidism)

3. Patients who require long-term anticoagulation/DAPT for a condition other than atrial fibrillation

4. Patients not suitable for short term oral anti-coagulation (including due to bleeding diathesis or coagulopathy or absolute contraindication to OAC or DAPT ) or who will refuse transfusion

5. Patients with rheumatic mitral valve disease, known severe aortic stenosis requiring surgical or percutaneous valve replacement, or existing mechanical valve prosthesis

6. Active infection with bacteremia

7. Known hypersensitivity or contraindication to aspirin, clopidogrel, heparin/bivalirudin, any device material or component (nitinol, nickel, titanium, PET), and/or contrast sensitivity that cannot be adequately pre-medicated

8. Anatomic conditions that would prevent performance of the LAA occlusion procedure (e.g., prior atrial septal defect [ASD] or patient foramen ovale [PFO] surgical repair or implanted closure device, or obliterated left atrial appendage)

9. Recent (within 30 days pre-procedure) or planned (within 60 days post procedure) cardiac or non-cardiac interventional or surgical procedure (e.g., cardioversion, ablation, percutaneous coronary intervention, cataract surgery, etc.)

10. Recent (within 90 days pre-procedure) stroke, transient ischemic attack, or myocardial infarction

11. Severe heart failure (New York Heart Association Class IV)

12. Known asymptomatic carotid artery disease with>70% diameter stenosis OR symptomatic carotid disease (>50% diameter stenosis with ipsilateral stroke or TIA). Subjects with prior carotid endarterectomy or carotid stent placement may be enrolled, provided that known diameter stenosis is <50%.

13. Past or pending heart or any other organ transplant, or on the waiting list for any organ transplant

14. Current participation in another investigational drug or device study

15. Size of the left atrial appendage at the LAmbre Plus defined landing zone within outside the manufactures recommendations (Table 2.)

16. Patients with an indication for chronic P2Y12 platelet inhibition therapy

17. Patients who are unable to undergo CT scan

Echocardiographic Exclusion Criteria

1. Left atrial appendage anatomy may accommodate implantation of the WATCHMAN device, according to IFU by size.

2. LVEF <25%

3. Intracardiac thrombus or dense spontaneous echo contrast, as visualized by TEE within 2 days prior to implant

4. Presence of a high-risk patent foramen ovale (PFO), defined as an atrial septal aneurysm (excursion >15 mm or length >15 mm) or large shunt (early, within 3 beats and/or substantial passage of bubbles)

5. Moderate or severe mitral valve stenosis (mitral valve area <1.5 cm2)

6. Complex atheroma with mobile plaque of the descending aorta and/or aortic arch (Grade 4 or higher)

7. Presence of an intracardiac tumor

Related Conditions & MeSH terms

• Atrial Fibrillation
• CVA
• Left Atrial Appendage Thrombosis
• Thrombosis

Intervention

Device:
• LAmbre PlusTM Left Atrial Appendage Closure System
The LAmbre Plus device is a self-expanding occluder, composed of a distal Umbrella and a proximal Cover laser welded together, delivered percutaneously via femoral venous access and trans-septal puncture. The distal Umbrella consists of an elastic nitinol frame and outer PET membrane, and has circumferential anchors to secure the occluder to the left atrial appendage (LAA) wall. The proximal Cover is a disc of elastic nitinol mesh, which seals the orifice of the LAA and minimizes thrombus formation, and includes a PET membrane to prevent the passage of blood into the LAA after implantation.

Drug:
• Market approved oral anticoagulation (OAC), such as warfarin (Coumadin), dabigatran (Pradaxa), rivaroxaban (Xarelto), apixiban (Eliquis), edoxaban (Savaysa), or betrixaban (Bevyxxa)
Continuation of market approved OAC drug.

Locations

Country	Name	City	State
United States	Henry Ford Hospital	Detroit	Michigan

Sponsors (2)

Lead Sponsor	Collaborator
Brian O'Neill MD	Lifetech Scientific (Shenzhen) Co., Ltd.

Country where clinical trial is conducted

United States, 

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* Note: There are 41 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Composite of time to first occurrence of stroke, cardiovascular death, or clinically relevant major or non-major bleeding events	Defined as composite of: First occurrence of stroke defined by NeuroARC; Cardiovascular death defined as any death due to proximate cause (e.g., MI, low-output failure, fatal arrhythmia), unwitnessed death and death of unknown cause, and all procedure related deaths, including those related to concomitant treatment; Clinically relevant major or non-major bleeding events defined by hemoglobin of =2.0 g/dl during a 24-h period, transfusion of =2 units of packed red cells, bleeding at a critical site (intracranial, intraspinal, intraocular, pericardial, intramuscular with compartment syndrome, or retroperitoneal), or fatal bleeding	through study completion, up to 5 years
Primary	Composite of time to first occurrence of ischemic stroke or systemic embolism	Defined as composite of: First occurrence of ischemic stroke defined by NeuroARC; Systemic embolization defined as acute vascular insufficiency or occlusion of the extremities or any non-CNS organ associated with clinical, imaging, surgical/autopsy evidence of arterial occlusion in the absence of other likely mechanism (e.g. trauma, atherosclerosis, or instrumentation). When there is presence of prior peripheral artery disease, angiographic or surgical or autopsy evidence is required to show abrupt arterial occlusion.	through study completion, up to of 5 years
Primary	Overall safety	Overall safety is defined as the composite of: Major procedure-related complications, defined as the composite of cardiac perforation, pericardial effusion with tamponade, device embolization, and major vascular complications (adjudicated by the independent Clinical Events Committee as related to the study device or procedure); AND Major adverse events, defined as all death, all stroke and major bleeding as compared to OAC	12 months
Secondary	Mortality	Death classified as cardiovascular or non-cardiovascular and reported cumulatively and individually	45 days, 6 months, 12 months, 5 years
Secondary	Myocardial Infarction	Occurrence of MI defined by modified Third Universal Definition, which will be adjudicated and classified by an independent Clinical Events Committee (CEC)	45 days, 6 months, 12 months, 5 years
Secondary	Peri-Procedural Stroke	Occurrence of peri-procedural stroke defined as Overt CNS Injury (NeuroARC defined)	30 days
Secondary	Bleeding Complications	Occurrence of bleeding complications evaluated as major bleeding (BARC Type =3); major and minor bleeding (BARC =2) and its components by BARC Type	45 days, 6 months, 12 months, 5 years
Secondary	Major Procedure-Related Complications	Occurrence of major procedure-related complications, defined as the composite of cardiac perforation, pericardial effusion with tamponade, ischemic stroke (NeuroARC defined), device embolization, major vascular complications (VARC 3 defined), and major bleeding	45 days
Secondary	Vascular Complications	Occurrence of Vascular complications (VARC 3 defined)	45 days, 6 months, 12 months, 5 years
Secondary	Embolic events	Occurrence of embolic events, defined as the composite of ischemic stroke (NeuroARC defined) and systemic embolization	45 days, 6 months, 12 months, 5 years
Secondary	Ischemic Stroke	Occurrence of ischemic stroke (NeuroARC defined)	45 days, 6 months, 12 months, 5 years
Secondary	Systemic embolization	Occurrence of systemic embolization defined by acute vascular insufficiency or occlusion of the extremities or any non-CNS organ associated with clinical, imaging, surgical/autopsy evidence of arterial occlusion in the absence of other likely mechanism (e.g. trauma, atherosclerosis, or instrumentation). When there is presence of prior peripheral artery disease, angiographic or surgical or autopsy evidence is required to show abrupt arterial occlusion.	45 days, 6 months, 12 months, 5 years
Secondary	All CNS injury and dysfunction	Occurrence of all CNS injury and dysfunction (NeuroARC defined)	45 days, 6 months, 12 months, 5 years
Secondary	Technical success	Technical success is defined as successful implantation (acceptable device position, stability, and LAA seal) with the assigned device	within 24 hours Post-procedure
Secondary	Closure success	Closure success is defined as technical success followed by successful LAA closure (complete LAA closure or peri-device residual jet <5 mm in width by TEE/Imaging or CT)	45 days
Secondary	Procedural Success	Procedural success is defined as technical success without major procedure-related complications	7 days Post-procedure
Secondary	Total Procedural Time	Total procedural time is defined as time elapsed between first venous access and removal of the last catheter from the venous access sheath	within 24 hours Post-procedure
Secondary	Device Thrombosis	Occurrence of device thrombosis	45 days, 6 months, 12 months, 5 years