In the total cohort of patients, the area under curve (AUC) of galectin-3 for prediction of AF (0.768 ± 0.03; 95% CI = 0.717–0.819) was not different from the AUC of PINP (0.761 ± 0.03, 95% CI = 0.708–0.813), but AUCs both of them were different significantly from AUC of PIIINP (0.707 ± 0.03, 95% CI = 0.651–0.763). Here, LGALS3 is linked to atrial fibrillation.