From OMIM
Brugada Syndrome 7 Brugada syndrome is characterized by an ST segment elevation in the right precordial electrocardiogram leads (so-called type 1 ECG) and a high incidence of sudden death in patients with structurally normal hearts. The syndrome typically manifests during adulthood, with a mean age of sudden death of 41 +/- 15 years, but also occurs in infants and children (summary by Antzelevitch et al., 2005). For a discussion of genetic heterogeneity of Brugada syndrome, see BRGDA1 (601144). Atrial Fibrillation 16 Atrial fibrillation (AF) is the most common cardiac arrhythmia in the clinical setting, with a prevalence of 1% in the general population; prevalence increases with age and reaches more than 8% in the ninth decade of life. AF accounts for more than 15% of strokes, and is associated with worsening heart failure and increased mortality. More than 30% of cases of AF are considered to be 'lone AF,' unassociated with coronary artery disease, hypertension, valvular heart disease, hyperthyroidism, heart failure, or structural heart disease (summary by Wang et al., 2010). For a discussion of genetic heterogeneity of atrial fibrillation, see ATFB1 (608583).  http://www.omim.org/entry/613120