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Left atrial appendage CLOSURE in patients with heart arrhythmia at high risk of stroke and bleeding compared to medical therapy.

Left atrial appendage CLOSURE in patients with Atrial Fibrillation at high risk of stroke and bleeding compared to medical therapy: a prospective randomized clinical trial - CLOSURE-AF-DZHK16

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2017-000058-21-DE
Enrollment
970
Registered
2017-08-28
Start date
2018-03-01
Completion date
Unknown
Last updated
2026-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atrial Fibrillation with high risk of stroke and bleeding MedDRA version: 20.0 Level: PT Classification code 10003658 Term: Atrial fibrillation System Organ Class: 10007541 - Cardiac disorders

Interventions

Product Name: ACETYLSALICYLIC ACID Pharmaceutical Form: Gastro-resistant tablet INN or Proposed INN: ACETYLSALICYLIC ACID Other descriptive name: ASA, ASS Product Name: CLOPIDOGREL Pharmaceutical For

Sponsors

Charité – Universitätsmedizin Berlin, Campus Benjamin Franklin
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Signed Written Informed Consent - Documented atrial fibrillation (paroxysmal, persistent, long-standing persistent or permanent) - CHA2DS2VASc-Score =2 - High risk of bleeding under oral anticoagulation or contraindication for (N)OAC therapy, in particular patients with at least one of the following conditions: *HAS-BLED-Score =3 *Prior intracranial/intraspinal bleed, intraocular bleed compromising vision (BARC: type 3c) *Hemorrhagic/bleeding complication fulfilling BARC type 3a or 3b: gastrointestinal tract, genitourinary tract or respiratory tract bleeding, where the patient is considered to be at a persistently increased risk of bleeding, e.g. the cause of bleeding cannot be successfully eliminated *Chronic kidney disease with eGFR 15-29 ml/min/1.73 m2 * Any recurrent bleeding making chronic anticoagulation not feasible - Subject eligible for an LAA occluder device - Age =18 years - Willing and capable of providing informed consent, participating in all associated study activities - negative SARS-CoV-2 PCR test (no longer than 48 hours prior to randomization in outpatients or not older than 14 days in continuously hospitalized patients without signs of COVID-19 infection) or negative SARS-CoV-2 rapid antigen test (no longer than 24 hours prior to randomization) Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 270 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 700

Exclusion criteria

Exclusion criteria: - Absolute contraindication to acetylsalicylic acid - Comorbidities other than AF requiring chronic (N)OAC therapy, e.g. mechanical heart valve prosthesis - Symptomatic carotid disease (if not treated) - Complex aortic atheroma with mobile plaque (Kronzon classification grade V) - Heart transplant - Active infection or symptoms suggestive of COVID-19 infection or active endocarditis or other infections resulting in bacteremia - Cardiac Tumor - Severe liver failure (Child–Pugh class C or liver failure with coagulopathy) - Severe renal failure (GFR <15 ml/min/1.73m2 or current requirement for dialysis (defined as current, regular renal replacement therapy performed at least weekly (including hemodialysis and peritoneal dialysis) within the last 30 days)) - Pregnancy or breastfeeding - For female patients of reproductive potential: Unwilling to agree to use a highly effective method of contraception (Pearl index <1) throughout the study period - Subject with participation in another interventional clinical trial during this study or within 30 days before entry into this trial. - Known terminating disease with life expectancy <1 year (including those with end-stage heart failure) - Subjects, who are committed to an institution due to binding official or court order - Subject who is dependent on the Site, the Site Investigator, any sub-investigator, his/her representative and/or the sponsor - Persons who are not proficient in the German language - Unstable/ not fully recompensated acute heart failure corresponding to NYHA class III and/or IV -Subject with known antiphospholipid syndrome

Design outcomes

Primary

MeasureTime frame
Main Objective: Study goal is to determine the clinical benefit of a strategy of percutaneous catheter-based left atrial appendage (LAA) closure in patients with NVAF at high risk of stroke (CHA2DS2-VASc Score =2) and bleeding as compared to best medical care (including a non-vitamin K antagonist oral anticoagulant [NOAC] if patient is eligible).;Secondary Objective: Not applicable.;Primary end point(s): Primary endpoint (net clinical benefit) Survival time free of the composite of: - Stroke (including ischemic or hemorrhagic stroke) - Systemic embolism - Major bleeding (BARC type 3-5) - Cardiovascular or unexplained death ;Timepoint(s) of evaluation of this end point: Patients will be evaluated for the primary endpoint at follow up visits at 7 days*, 30 days*, 3, 6*, 12, 18*, 24, 36*, 48*, 60*, 72* and 84* months, EOS* (*phone visits).

Secondary

MeasureTime frame
Secondary end point(s): - Primary endpoint events per year - Combined endpoint: MACCE (stroke/systemic embolism/cardiovascular death/myocardial infarction) - Mortality (including all-cause death, cardiovascular death, non- cardiovascular death, peri-procedural death) - Major bleeding (BARC type 3-5) - Systemic embolism - Ischemic stroke - Hemorrhagic stroke - Transient ischemic attack (TIA; defined as neurological deficit of vascular origin lasting =24 hours without corresponding brain lesion) - Myocardial infarction - Hospitalization for bleeding or cardiovascular event - Changes in cognitive function assessed by MoCA (= Montreal Cognitive Assessment) - Changes in health-related quality of life (EQ-5D-5L) - Changes in modified Rankin Scale (mRS) Secondary safety endpoint(s): - Device-related complications until day 7 or discharge and total follow-up time - Device thrombus/fracture/erosion/infection/embolization - Pericardial effusion - Procedure related death - Technical and procedural success of device implantation (see also protocol chapter 4.2.4) - Peri-procedural outcomes at 7 days or discharge and 30 calendar days after implantation (see also protocol chapter 4.2.4) - Additionally, the total number of SAEs will be analyzed;Timepoint(s) of evaluation of this end point: Patients will be evaluated for the primary endpoint at follow up visits at 7 days*, 30 days*, 3, 6*, 12, 18*, 24, 36*, 48*, 60*, 72* and 84* months, EOS* (*phone visits).

Countries

Germany

Contacts

Public ContactStudienzentrale

Klinik für Kardiologie, Angiologie und Intensivmedizin - Deutsches Herzzentrum der Charité - Campus Benjamin Franklin

closure-af@dzhk.de

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026