Danon disease is a rare X-linked dominant genetic disorder that manifests with the clinical triad of cardiomyopathy, skeletal myopathy, and intellectual disability. It is caused by genetic mutations in the lysosome-associated membrane 2 (LAMP2) gene, with most mutations leading to an absence of LAMP2 protein. Most published data on this disease is abstracted from case reports, limited observational studies, and expert opinion.
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