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Genetic and Rare Diseases Information Center (GARD)

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Glycogen storage disease type 3

Other Names for this Disease
  • Amylo-1,6-glucosidase deficiency
  • Cori disease
  • Forbes disease
  • Glycogen debrancher deficiency
  • Limit dextrinosis
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How might glycogen storage disease type 3 be treated?

There is not currently a cure for for glycogen storage disease type 3 (GSDIII). In some cases, diet therapy is helpful. Strict adherence to a dietary regimen may reduce liver size, prevent hypoglycemia (low blood sugar), help to reduce symptoms, and allow for growth and development.[1] Management typically includes a high-protein diet with cornstarch supplementation to maintain a normal level of glucose in the blood. In infancy, feeding every three to four hours is typically recommended. Toward the end of the first year of life, cornstarch is usually tolerated and can be used to avoid hypoglycemia. A high-protein diet prevents breakdown of muscle protein in times of glucose need and preserves skeletal and cardiac muscles. Skeletal and cardiac myopathies may be improved with high-protein diet and avoiding excessive carbohydrate intake.[2] Liver transplantation may be indicated for patients with hepatic cancers.[1]

Individuals seeking personal treatment advice should speak with their health care provider.
Last updated: 2/13/2012

  1. Wayne E Anderson. Glycogen Storage Disease, Type III: Treatment & Medication. eMedicine. January 13, 2010; Accessed 3/2/2011.
  2. Aditi Dagli, Christiaan P Sentner, David A Weinstein. Glycogen storage disease type III. GeneReviews. October 21, 2010; Accessed 3/2/2011.

Management Guidelines

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