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Danon disease as a cause of autophagic vacuolar myopathy

Zhao Yang1, Matteo Vatta

  • 1Baylor College of Medicine, Department of Pediatrics, Houston, TX 77030, USA.

Congenital Heart Disease
|April 2, 2008
PubMed

Insights

Danon disease is a rare X-linked disorder caused by LAMP2 deficiency, leading to hypertrophic cardiomyopathy and muscle issues. This review covers its clinical aspects, genetics, and diagnosis.

Area of Science:

  • Genetics and rare diseases
  • Cardiovascular and muscle disorders

Background:

  • Danon disease is an X-linked dominant disorder characterized by hypertrophic cardiomyopathy (HCM), skeletal myopathy, and intellectual disability.
  • The condition is associated with autophagic vacuoles in cardiac and skeletal muscles.
  • It is primarily caused by a deficiency in lysosome-associated membrane protein 2 (LAMP2).

Purpose of the Study:

  • To provide a comprehensive review of Danon disease.
  • To discuss the clinical manifestations, molecular genetics, and animal models.
  • To outline the differential diagnosis for Danon disease.

Main Methods:

  • Literature review of clinical features.
  • Analysis of molecular genetics data.
  • Examination of existing animal models and diagnostic criteria.

Main Results:

  • Danon disease presents with a distinct triad of HCM, skeletal myopathy, and variable intellectual impairment.
  • LAMP2 deficiency disrupts lysosomal function, leading to autophagosome accumulation.
  • Animal models offer insights into disease mechanisms and potential therapeutic targets.

Conclusions:

  • Danon disease requires careful clinical evaluation and genetic testing for accurate diagnosis.
  • Understanding the molecular basis of LAMP2 deficiency is crucial for developing targeted therapies.
  • Distinguishing Danon disease from other cardiomyopathies and myopathies is essential for appropriate patient management.

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