eMedicine Specialties > Pediatrics: Genetics and Metabolic Disease > Metabolic Diseases
Glycogen-Storage Disease Type VI: Treatment & Medication
Updated: Aug 4, 2008
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
Treatment
Consultations
- Refer the patient to a dietitian experienced with glycogen-storage diseases and the management of disorders associated with an increased risk of hypoglycemic episodes.
- Refer families to a medical geneticist or genetic counselor to review the specific inheritance of glycogen-storage disease type VI (GSD VI) present in the affected child. Inheritance may be autosomal recessive or X-linked recessive. Parents have a 25% risk of an affected offspring with each pregnancy or a 50% risk with each male offspring, respectively. An X-linked dominant inheritance is rarely reported.
Diet
- Dietary management is the only form of treatment necessary for this rather mild form of glycogen-storage disease.
- A high carbohydrate diet and frequent feedings are recommended only for those patients who exhibit fasting hypoglycemia.
- Although some patients have been given a high-protein diet or supplementation of unsaturated fats, most patients require no dietary intervention.
Activity
- Do not restrict the patient's activity unless significant hepatomegaly is present; recommend that patients with significant hepatomegaly avoid contact sports and activities.
Medication
Drug therapy is not currently a component of the standard of care for this disease.
More on Glycogen-Storage Disease Type VI |
| Overview: Glycogen-Storage Disease Type VI |
| Differential Diagnoses & Workup: Glycogen-Storage Disease Type VI |
Treatment & Medication: Glycogen-Storage Disease Type VI |
| Follow-up: Glycogen-Storage Disease Type VI |
| References |
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References
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Burwinkel B, Rootwelt T, Kvittingen EA. Severe phenotype of phosphorylase kinase-deficient liver glycogenosis with mutations in the PHKG2 gene. Pediatr Res. 2003;54(6):834-839. [Medline].
Burwinkel B, Amat L, Gray RG. Variability of biochemical and clinical phenotype in X-linked liver glycogenosis with mutations in the phosphorylase kinase PHKA2 gene. Hum Genet. Apr 1998;102(4):423-9. [Medline].
Bashan N, Iancu TC, Lerner A. Glycogenosis due to liver and muscle phosphorylase kinase deficiency. Pediatr Res. Apr 1981;15(4 Pt 1):299-303. [Medline].
Beauchamp NJ, Taybert J, Champion MP et al. High frequency of missense mutations in glycogen storage disease type VI. J Inherit Metab Dis. Oct 2007;30:722-734. [Medline].
Burwinkel B, Bakker HD, Herschkovitz E. Mutations in the liver glycogen phosphorylase gene (PYGL) underlying glycogenosis type VI. Am J Hum Genet. Apr 1998;62(4):785-91. [Medline].
Burwinkel B, Bakker HD, Herschkovitz E, et al. Mutations in the liver glycogen phosphorylase gene (PYGL) underlying glycogenosis type VI. Am J Hum Genet. Apr 1998;62(4):785-91. [Medline].
Chen Y-T, Burchell A. Glycogen storage diseases. In: The Metabolic and Molecular Bases of Inherited Disease. Vol 1. 1995:935-65.
Goldberg T, Slonim AE. Nutrition therapy for hepatic glycogen storage diseases. J Am Diet Assoc. Dec 1993;93(12):1423-30. [Medline].
Hendrickx J, Bosshard NU, Willems P. Clinical, biochemical and molecular findings in a patient with X-linked liver glycogenosis followed for 40 years. Eur J Pediatr. Nov 1998;157(11):919-23. [Medline].
Hendrickx J, Lee P, Keating JP. Complete genomic structure and mutational spectrum of PHKA2 in patients with x-linked liver glycogenosis type I and II. Am J Hum Genet. Jun 1999;64(6):1541-9. [Medline].
Kotb MA, Abdallah HK, Kotb A. Liver glycogenoses: are they a possible cause of polyneuropathy? A cross-sectional study. J Trop Pediatr. Aug 2004;50(4):196-202. [Medline].
Newgard CB, Fletterick RJ, Anderson LA. The polymorphic locus for glycogen storage disease VI (liver glycogen phosphorylase) maps to chromosome 14. Am J Hum Genet. Apr 1987;40(4):351-64. [Medline].
Ozen H. Glycogen storage diseases: new perspectives. World J Gastroenterol. May 2007;13:2541-2553. [Medline].
Tang NL, Hui J, Young E, et al. A novel mutation (G233D) in the glycogen phosphorylase gene in a patient with hepatic glycogen storage disease and residual enzyme activity. Mol Genet Metab. Jun 2003;79(2):142-5. [Medline].
Willems PJ, Gerver WJ, Berger R. The natural history of liver glycogenosis due to phosphorylase kinase deficiency: a longitudinal study of 41 patients. Eur J Pediatr. Jan 1990;149(4):268-71. [Medline].
Further Reading
Keywords
glycogen storage disease type VI, Hers disease, Hers' disease, GSD, GSD VI, glycogenosis, liver phosphorylase deficiency, glycogen phosphorylase, liver phosphorylase, hepatic phosphorylase kinase, X-linked liver glycogenosis, type 6 glycogenosis, hepatophosphorylase deficiency glycogenosis, hypoglycemia, hyperketosis, growth retardation, hepatomegaly, hyperlacticacidemia, hyperuricemia, hyperlipidemia, renal tubule acidosis, phosphorylase kinase deficiency, severe cardiomyopathy, short stature
Treatment & Medication: Glycogen-Storage Disease Type VI