Atrial Fibrillation, Familial, 13, is also known as atfb13. An important gene associated with Atrial Fibrillation, Familial, 13 is SCN1B (Sodium Voltage-Gated Channel Beta Subunit 1). Affiliated tissues include heart and heart-atrium, and related phenotypes are paroxysmal atrial fibrillation and aortic valve stenosis