LOXL2 and Paroxysmal atrial fibrillation: In addition, serum LOXL2 levels were increased in the patients with persistent AF (Ps-AF) than those patients with paroxysmal AF (Px-AF) (645.45 ± 301.37 pg/ml vs 434.54 ± 297.90 pg/ml, P<0.01) (Figure 1).