A heart conduction disease characterized by autosomal dominant inheritance of a cardiac conduction defect that may progress to complete atrioventricular (AV) block and maybe asymptomatic of manifest as shortness of breath, dizziness, syncope, abdominal pain, heart failure or sudden death. (DO)
Note: Use of the qualifier "multiple interactions" designates that the annotated interaction
is comprised of a complex set of reactions and/or regulatory events, possibly involving
additional chemicals and/or gene products.