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tion in SCN5A could be a cause of both BrS and SSS.4-6) At that point in time, we had only five patients diagnosed as having BrS at Juntendo University Hospital and affiliated hospitals, and three of the five patients coincidentally suffered from sinus node dysfunction. Then, I reported our three cases of BrS concomitant with sinus node dysfunction in 2005.7)At Juntendo University Hospitals, although the number of patients with BrS was very limited, there were many patients with SSS. We were able to study 487 consecutive patients implanted with a pacemaker for SSS at Juntendo University Hospital or Shizuoka Hospital during the period from 1971 to 2004. We retrospectively analyzed the patient’s ECG results obtained just before the pacemaker implantations, and we identified a Brugada-type ECG in 14 patients (2.87%) including four (0.82%) with type 1 (the coved-type) and 10 (2.05%) with type 2 (the saddleback-type).8) Remarkably, two of the four patients with a type 1 ECG had experi-enced a spontaneous episode of VF. In 2010, we reported that the prevalence of typical Bruga-da-type (type 1) ECG among SSS patients seems to be higher compared to the general population: 0.82% in SSS patients and 0.05%-0.28% in adults of the general population.8) The report’s first author, 448Figure 5　The ECG of the first patient with Brugada syndrome at Juntendo University Hospital, recorded 30 years after his last episode of ventricular fibrillation, no longer showing Brugada-type ECG findings.Figure 4　Dr. Hidemori Hayashi (left) making a presentation before Professor Joseph Brugada (right) at the AHA meeting in 2007.Dr. Hidemori Hayashi, made a presentation about the report at the American Heart Association meeting in 2007 (Figure 4). Dr. Hayashi discussed his presentation with Professor Joseph Brugada (Figure 4, right), one of the Brugada brothers, who attended the meeting as a session chair-person. Dr. Hayashi won the Young Investigator’s Award (YIA) from the Japanese College of Cardiology in 2007 for this study. In 2018, we published the clinical review “Brugada