Type 2 Brugada Pattern - Saddleback ST V1-V3

A 42-year-old asymptomatic male presents for preoperative ECG before elective inguinal hernia repair. He denies syncope, palpitations, or seizure history, but his uncle died suddenly at age 44 during sleep. The baseline resting ECG shows the pattern marked **A** in the diagram: saddleback ST-segment elevation in V1–V2 with a J-point elevation ≥2 mm, an initial high descent (≥1 mm above baseline), and a concave-up ST segment terminating in a positive T-wave. QRS duration is 100 ms. What is the diagnostic significance of this ECG pattern in the context of suspected Brugada syndrome?