MAGEA3 and multiple epiphyseal dysplasia: In patients of MAGE3 (6.37–13.66 mmol/L), we also found significant higher incidences of atrial premature beat (P < 0.001), couples of atrial premature beat (P < 0.001), atrial tachycardia (P < 0.001), and ventricular premature beat (P = 0.013) in EDM group (Table 4).