A homozygous SCN5A mutation in a severe, recessive type of cardiac conduction disease.

Abstract excerpt

Cardiac sodium channels are key players in the generation and propagation of action potentials in the human heart. Heterozygous mutations in the SCN5A gene have been found to be associated with long QT syndrome, Brugada syndrome, and sinus node dysfunction (SND). Recently, overlapping arrhythmia phenotypes have been reported as well. Here we describe a novel recessive SCN5A mutation in a family originating from...

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