The clinical manifestations of glycogen storage disease type IV (GSD IV) discussed in this entry span a continuum of different subtypes with. GSD IV GLYCOGEN BRANCHING ENZYME DEFICIENCY GBE1 DEFICIENCY ANDERSEN DISEASE BRANCHER DEFICIENCY GLYCOGENOSIS IV. Spanish Synonyms of “enfermedad por almacenamiento de gluc√≥geno-tipo IV”: EAG tipo IV, enfermedad de Andersen, glucogenosis tipo IV.

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Kumada S, Okaniwa M.

Check glucogenosis you have access through your login credentials or your institution. The following evaluations are suggested with frequency varying according to the severity of the condition:. A mild juvenile variant of type IV glycogenosis.

Nervous system involvement in type IV glycogenosis. Related Genetic Counseling Issues See Management, Evaluation of Relatives at Risk for information on evaluating at-risk relatives for the purpose of early diagnosis and treatment. The authors concluded that residual enzyme activity could not be used to predict the clinical course in GSD IV, that not all patients require liver transplant, and that caution should be used in genetic counseling.


Additional information Further information on this disease Classification s 5 Gene s 1 Clinical signs and symptoms Publications in PubMed Other website s It is appropriate to offer genetic counseling including discussion of potential risks to offspring and reproductive options to young adults who are affectedare carriers, or are at risk of being carriers.


GBE1 is the only gene in which pathogenic variants are known to cause glycogen storage disease type IV. Clinical Diagnosis GSD IV can manifest as several different subtypes, with glucogenosjs ages of onset, severity, and clinical features, including the following: For clarity, excerpts of GeneReviews chapters for use in lab reports and clinic notes are a permitted use. Am J Med Genet A.

Data are compiled from the following standard references: Prognosis Prognosis is unfavorable for patients with perinatal onset and classic forms who do not undergo liver transplantation. Less frequently, glucogenoss may have liver dysfunction without liver failure, referred to as yipo hepatic GSD IV.

Orphanet: Glucogenosis tipo 4

For a detailed summary of gene and protein information, see Table AGene. CC HPO: For all other comments, please send your remarks via contact us. Only comments seeking to improve the quality glucogeenosis accuracy of information on the Orphanet website are accepted. The highest incidence of glycogen storage disease type III is in the Faroe Islands where it glucogenosis in 1 out of every 3, births, probably due to a founder effect. The clinical manifestations of glycogen storage disease type IV GSD IV discussed in this entry span a continuum of different subtypes with variable ages of onset, severity, and clinical features.


We need long-term secure funding to provide you the information that you need at your fingertips. The enzyme deficiency results in tissue accumulation of abnormal glycogen with fewer branching points and longer outer branches, resembling an amylopectin-like structure, also known as polyglucosan Tay et al. The variable presentations of glycogen storage disease type IV: Prevention of Secondary Complications Nutritional deficiencies e.

The genes and proteins of atherogenic lipoprotein production.

Neonatal hypotonia and cardiomyopathy secondary to type IV glycogenosis. Disaccharide catabolism Congenital alactasia Sucrose intolerance.

Myophosphorylase deficiency glycogenosis type V; McArdle disease. Of the 40 pathogenic variants identified, 29 are within the catalytic domain of the enzyme. Combined liver-kidney grafts have been performed in a few cases. Null mutations and lethal congenital form gkucogenosis glycogen storage disease type IV.

Only 1 had contractures. University of Glucogenosis, Seattle.

Continuing lessons from glycogen storage diseases. Offspring of a proband. Molecular genetic testing enables confirmation of diagnosis.