A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel-group Study to evaLuate the effIcacy and Safety of abeLacimab in High-risk Patients With Atrial Fibrillation Who Have Been Deemed Unsuitable for Oral antiCoagulation (LILAC-TIMI 76)

Inclusion Criteria: * Patient is able to understand and has provided written informed consent to participate in the trial * Diagnosed Atrial Fibrillation (AF) or atrial flutter (documented on an electrocardiogram (ECG) or monitor recording) * Age 65-74 and a CHA2DS2VASc ≥4 OR age ≥75 and a CHA2DS2VASc ≥3 * Patient is judged by the responsible physician to be unsuitable for oral anticoagulation because the risks outweigh the benefits or the patient is unwilling to take oral anticoagulation AND this determination was made prior to and independent of the study * At least 1 bleeding risk factor s…