Atrial fibrillation is associated with a number of genes that have been suspected in BrS, including SCN5A, SCN1B, SCN2B, SCN3B, SCN4B, SCN10A, ABCC9, HCN4, KCNQ1, KCNJ2, KCNJ5, KCNJ8, KCNE1, KCNE2, KCNE3, KCNE5, KCNH2, KCND3, RYR2, and CACNB2 (203). This evidence concerns the gene SCN5A and atrial fibrillation.