TABLE 1.
1. Unexplained ventricular arrhythmia of right bundle block configuration. |
2. Unexplained T‐wave inversion in inferior or lateral leads. |
3. Mild left ventricular dilation and/or systolic impairment. |
4. Myocyte loss with fibrofatty or fibrotic replacement confirmed by biopsy or late gadolinium enhancement in the left ventricle on cardiac magnetic resonance. |