Abstract
Brugada syndrome is an inherited cardiac arrhythmia that follows autosomal dominant transmission and can cause sudden death. This paper reported a case of Brugada syndrome in a 43-year-old male patient with no clinical symptoms. Brugada-type 2-ECG changes were accidentally detected. Flecainide test was done and proved positive. Gene analysis revealed a novel missense mutation in the SCN5A gene with a genetic variation of D252N. This novel mutation has not been reported on any genetic databases related to Brugada syndrome. Functional protein analysis software suggested that the mutation occurs in the highly conserved gene and probably has a damaging effect. This is the first Brugada syndrome case reported with a mutation in the SCN5A gene in Vietnam.
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