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Study identifier: NCT07575867 Synced from ClinicalTrials.gov · July 29, 2026
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CLOT-LESS - CLOsure Tailored: LEss Antithrombotic Strategy After LAAC for Stroke Prevention

Condition: Atrial Fibrillation · Stroke Prevention in Patients With Atrial Fibrillation · Left Atrial Appendage Closure  ·  Sponsor: National Medical Research Center for Therapy and Preventive Medicine

PhaseN/A
Planned participants464
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This is a prospective, non-randomized, observational cohort study conducted at the FSBI "NMRC TPM" of the Ministry of Healthcare of the Russian Federation. Left atrial appendage closure (LAAC) has been shown to be non-inferior to oral anticoagulation for preventing cardioembolic events in patients with atrial fibrillation. However, the optimal post-procedural antithrombotic regimen following LAAC remains unclear, with no consensus on evidence-based therapy. Given current trends in cardiology favoring reduced-intensity antithrombotic strategies, this study aims to contribute to the evidence base by evaluating whether LAAC followed by reduced-dose apixaban (2.5 mg BID) for 3 months with subsequent complete withdrawal of antithrombotic therapy is superior to long-term standard-dose DOAC therapy in patients with non-valvular atrial fibrillation.

This description comes directly from the study's public registry record.

Talk to the study team

Timofey Brontveyn, Medical doctor  ·  +79150579995  ·  tbrontveyn.md@gmail.com

Karapet Davtyan, Professor  ·  +79037758779  ·  kdavtyan@gnicpm.ru

Always discuss trial participation with your own doctor first.

Locations (1)

Federal State Budgetary Institution National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Healthсare of the Russian FederationMoscow, RussiaRecruiting

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Source record: clinicaltrials.gov/study/NCT07575867