Atrioventricular Block, also known as av block, is related to second-degree atrioventricular block and first-degree atrioventricular block. An important gene associated with Atrioventricular Block is SCN5A (Sodium Voltage-Gated Channel Alpha Subunit 5), and among its related pathways/superpathways are DREAM Repression and Dynorphin Expression and Human Embryonic Stem Cell Pluripotency. The drugs Prednisolone and Prednisolone acetate have been mentioned in the context of this disorder. Affiliated tissues include heart and atrioventricular node, and related phenotypes are muscle and homeostasis/metabolism