Left Bundle Branch Hemiblock, also known as left bundle branch block, is related to familial isolated arrhythmogenic right ventricular dysplasia and angina pectoris. An important gene associated with Left Bundle Branch Hemiblock is NPPB (Natriuretic Peptide B), and among its related pathways/superpathways are Cardiac conduction and Cytoskeletal Signaling. The drugs Metronidazole and Benzocaine have been mentioned in the context of this disorder. Affiliated tissues include heart and atrioventricular node, and related phenotypes are muscle and growth/size/body region