Brugada syndrome (BrS) is the leading cause of sudden death in young Asian adults including Thailand. This syndrome may be hereditary and involve mutations in certain genes. Aim of the study is to identify the relationship between genetic variants and the diagnosis/clinical severity of patients with BrS.

This cohort study recruits BrS patients with confirmed Brugada type 1 ECG and healthy volunteers in Thailand. Data collection consists of demographic, clinical data, ECG and blood sample for genetic studies. Genotyping was done by whole genome sequencing and SNP array then compared between cases and controls. Each BrS patient will be followed up prospectively for symptoms and AICD shock. Subsequently, the study will analyze relationship between genetic variants and clinical data against clinical severity of BrS patients.

Inclusion Criteria:

• Thai nationality
• The patient has at least one of confirmed Brugada type 1 ECG in at least one of right precordial leads (v1 or v2) with or without pharmacologic provocative testing. The confirmed ECG is standard 12 lead ECG or Brugada lead

Exclusion Criteria:

• The patient has other cardiac diseases such as ischemic heart disease, valvular heart disease, congenital heart disease, myocarditis and pericarditis
• The patient has type 2 or type 3 Brugada ECG without type 1 ECG during pharmacologic provocative testing and/or Brugada lead
• The patient had one time of Brugada type 1 ECG during drug use without reproducibility

Thai Brugada syndrome patients and healthy volunteers

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