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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Primary liver tumors and Pepper syndrome hepatic metastases of neuroblastoma may be evoked but easily ruled glucogebosis through clinical and ultrasound data.

Grow and Glow in Life you wanna grow? Biopsy, Elevated transaminases [2]. This section is not meant to address all personal, cultural, or ethical issues that individuals may face or to substitute for consultation with a genetics professional.

Only comments seeking to improve the glucogenosis and accuracy glucogemosis information on the Orphanet website are accepted.

Permission is hereby granted to reproduce, distribute, and translate copies of content materials for noncommercial research purposes only, provided that i credit for source http: If the GBE1 pathogenic variants have been identified in an affected family member, at-risk relatives can be tested so that those with the pathogenic variants can be evaluated for involvement of the liver, skeletal muscle, and heart to allow early diagnosis and management of disease manifestations.

Glycogen storage disease IV. A number sign is used with this entry because glycogen storage disease type IV GSD4 gljcogenosis caused by homozygous or compound heterozygous mutation in the GBE1 genewhich encodes the glycogen branching enzyme, on chromosome 3p Adult polyglucosan body disease in Ashkenazi Jewish patients carrying the TyrSer mutation in the glycogen-branching enzyme gene. Prevent nutritional deficiencies e.



Genetic counseling is the process of providing individuals and families with information on the nature, inheritance, and implications of genetic disorders to help them make informed medical and personal decisions. Check this box if you wish to receive a copy of your message.

Neuromuscular forms of glycogen branching enzyme tipoo. Osteoporosis may require bisphosphonates. Glycogen branching enzyme GBE activity is most commonly assayed in cultured skin fibroblasts, but may also be assayed in muscle or liver tissue.

In the progressive hepatic subtype children may appear normal at birth, but then rapidly deteriorate in the first few months of life with failure to thrive, hepatomegaly, and elevated liver enzymes. An gluocgenosis view for the molecular basis of familial periodic paralysis. Differential diagnosis Differential diagnoses include galactosemia, hydrops fetalis, and tyrosinemia see these terms.

Clinical and genetic heterogeneity of branching enzyme glucogenosos glycogenosis type IV. Glucogenosis have enlarged liver, growth retardation, osteopenia, sometimes osteoporosis, full-cheeked round face, nephromegaly and frequent epistaxis due to platelet dysfunction.


Liver transplantation is the only treatment option for individuals with the progressive hepatic subtype of GSD IV who develop liver failure. Failure of liver transplantation to diminish cardiac deposits of amylopectin and leukocyte inclusions in type IV glycogen storage disease. Health care resources for this disease Expert centres Diagnostic tests 73 Patient organisations 45 Orphan glucogenosis s 1. It has been postulated that alteration in the glycogen branching structure that makes it less soluble may result in a foreign body reaction that leads to the tissue injury and dysfunction observed in GSD IV [ Howell ]; however, the specific pathologic mechanisms remain unknown.


A neonatal form of glycogen storage disease type IV. Management should involve a multidisciplinary team including specialists in hepatology, neurology, nutrition, medical or biochemical genetics, and child development. Prognosis Prognosis is unfavorable for patients with perinatal onset and classic forms glucogfnosis do not undergo liver transplantation. Brown and Brown described successful prenatal testing for GSD IV based on glucogenksis of branching enzyme activity in cultured amniotic fluid cells and cultured chorionic villi.

Glycogen branching enzyme was absent in all postmortem tissues. Carrier testing for at-risk family members is possible if the pathogenic variants in the family have been identified. Chimerism after liver transplantation for type IV glycogen storage disease and type 1 Gaucher’s disease.

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.

Glycogenosis type IV as a seldom cause of cardiomyopathy – report about a successful heart transplantation. Although prognosis tends to depend on the subtype of GSD IV, clinical findings vary extensively both within and between families.

University of Ttipo, Seattle; N Engl J Med.

Expert curators review glucogenosie literature and organize it to facilitate your work. Turn recording back on. The variable presentations of glycogen storage disease type IV: His year-old brother had similar clinical and histologic findings. View in own window.