Previous studies have identified several predictors of AF detection in ESUS patients using ILR, including age, B-type natriuretic peptide (BNP) levels, left atrial diameter, left ventricular diastolic dysfunction, premature atrial contractions on Holter electrocardiogram (ECG), and CHA2DS2-VASc score. This evidence concerns the gene NPPB and atrial fibrillation.