The median and interquartile range for anti-Dsg1 autoantibodies were: age at onset ≥ 65 years 104 (5.33 - 160.6) U/mL versus < 65 years 62.05 (12.65 - 187.25) U/mL, p = 0.972; coronary heart disease present 53.8 (7.7 - 128) versus absent 81 (13.3 - 189), p = 0.580; cardiac arrhythmia present 69.95 (9.1 - 131.35) versus absent 80.25 (13.95 - 188.5), p = 0.444. This evidence concerns the gene DSG1 and cardiac arrhythmia.