Cardiac Conduction Defect, also known as sudden cardiac death, is related to familial progressive cardiac conduction defect and progressive familial heart block, and has symptoms including chest pain An important gene associated with Cardiac Conduction Defect is SCN5A (Sodium Voltage-Gated Channel Alpha Subunit 5), and among its related pathways/superpathways are DREAM Repression and Dynorphin Expression and Cardiac conduction. The drugs Chrysarobin and Eicosapentaenoic acid ethyl ester have been mentioned in the context of this disorder. Affiliated tissues include heart and brain, and related phenotypes are nervous system and muscle