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A glycogen storage disease (GSD, also glycogenosis and dextrinosis) is a metabolic disorder caused by a deficiency of an enzyme or transport protein affecting glycogen synthesis, glycogen breakdown, or glucose breakdown, typically in muscles and/or liver cells.
It is the most common of the glycogen storage diseases. GSD I has an incidence of approximately 1 in 100,000 births in the American population, and approximately 1 in 20,000 births among Ashkenazi Jews. [6] The disease was named after German doctor Edgar von Gierke, who first described it in 1929. [7] [8]
Approximately 1 in 20,000 to 25,000 newborns have a glycogen storage disease. [4] Andersen's disease affects 1 in 800,000 individuals worldwide, with 3% of all GSDs being type IV. [5] The disease was described and studied first by Dorothy Hansine Andersen. [6] [7]
Danon disease (GSD 2b, Danon disease, lysosomal glycogen storage disease without acid maltase deficiency) Symptoms of both GSD types IIa and IIb are very similar due to a defect in lysosomes. However, in type IIb, some show abnormal glycogen accumulation, but not all. Classic infantile form (Pompe disease): Cardiomyopathy and muscular hypotonia.
Glycogen storage disease type IX is a hereditary deficiency of glycogen phosphorylase kinase B that affects the liver and skeletal muscle tissue. It is inherited in an X-linked or autosomal recessive manner. [1]
When both parents are unaffected genetic carriers, then their children may develop APBD, may be unaffected carriers, or may be healthy children without the mutation.. APBD is an autosomal recessive disorder that is caused when a person inherits genes from both parents containing one or more loss-of-function mutations in the gene GBE1 which encodes for glycogen branching enzyme, also called 1,4 ...
Glycogen-storage disease type 0 is a rare form, representing less than 1% of all cases. The identification of asymptomatic and oligosymptomatic siblings in several glycogen-storage disease type 0 families has suggested that glycogen-storage disease type 0 is underdiagnosed. [2]
Glycogen storage disease type VI (GSD VI) is a type of glycogen storage disease caused by a deficiency in liver glycogen phosphorylase or other components of the associated phosphorylase cascade system. [2] It is also known as "Hers' disease", after Henri G. Hers, who characterized it in 1959. [3]
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