Long Qt Syndrome 5, also known as lqt5, is related to familial long qt syndrome and ventricular tachycardia, familial, and has symptoms including syncope An important gene associated with Long Qt Syndrome 5 is KCNE1 (Potassium Voltage-Gated Channel Subfamily E Regulatory Subunit 1), and among its related pathways/superpathways are Cardiac conduction and Dopamine-DARPP32 Feedback onto cAMP Pathway. Affiliated tissues include heart and heart-ventricle, and related phenotypes are sinus bradycardia and prolonged qtc interval