Familial Progressive Cardiac Conduction Defect, also known as familial progressive heart block, is related to progressive familial heart block and right bundle branch block, and has symptoms including dyspnea and syncopal episode. An important gene associated with Familial Progressive Cardiac Conduction Defect is SCN1B (Sodium Voltage-Gated Channel Beta Subunit 1), and among its related pathways/superpathways are Cardiac conduction and L1CAM interactions. Affiliated tissues include heart, and related phenotypes are congestive heart failure and abdominal pain