The goal of this international observational study is to learn about the natural history of Danon disease in male patients (≥8 years of age) and female patients (8 to 50 years of age).
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Left Ventricular Mass Index (LVMI) by echocardiogram
Timeframe: Month 12, 24, 36