Cirakoglu OF, et al. - Researchers investigated the relationship between Syntax score (SS) and new-onset atrial fibrillation (NOAF: defined as atrial fibrillation documented after hospital admission) with known predictors of atrial fibrillation. In this prospective, single-center, cross-sectional study of 692 coronary artery disease patients, NOAF was detected in 82 patients (11.8%). They noted higher SS in patients with NOAF (22, interquartile range 18.3–25.1, vs 12, interquartile range 7–19.5). The multivariable logistic regression analysis revealed the independent and significant relation of SS with NOAF. TIMI flow <3, C reactive protein, left ventricular ejection fraction, left atrial volume index and E/E′ ratio were the other independent predictors of NOAF. For the development of NOAF, SS had the optimal cut-off value of 18 with 82% sensitivity and 68% specificity.