Brugada Syndrome 8, also known as brgda8, is related to sick sinus syndrome. An important gene associated with Brugada Syndrome 8 is HCN4 (Hyperpolarization Activated Cyclic Nucleotide Gated Potassium Channel 4). Affiliated tissues include heart and heart-ventricle, and related phenotypes are right bundle branch block and ventricular tachycardia