Sarcoglycanopathy

Sarcoglycanopathy is a type of muscular dystrophy that is characterized by a deficiency of one of the sarcoglycan proteins. This deficiency is caused by mutations in the genes that encode these proteins. Sarcoglycanopathies are inherited in an autosomal recessive manner.

Symptoms

The symptoms of sarcoglycanopathy typically begin in childhood or adolescence and include progressive muscle weakness and wasting, particularly in the limbs. Other symptoms may include difficulty walking, frequent falls, and heart problems.

Causes

Sarcoglycanopathies are caused by mutations in one of the four sarcoglycan genes: alpha-sarcoglycan (SGCA), beta-sarcoglycan (SGCB), gamma-sarcoglycan (SGCG), and delta-sarcoglycan (SGCD). These genes provide instructions for making proteins that are part of a protein complex that plays a critical role in the function of muscle cells.

Diagnosis

The diagnosis of sarcoglycanopathy is typically made based on the clinical symptoms, a physical examination, and confirmed by genetic testing. Other diagnostic tests may include muscle biopsy, electromyography (EMG), and echocardiogram.

Treatment

There is currently no cure for sarcoglycanopathy. Treatment is supportive and aims to manage symptoms and improve quality of life. This may include physical therapy, assistive devices, and medications to manage heart problems.

See also

• Muscular dystrophy
• Genetic disorder
• Autosomal recessive inheritance