Two cases of a non-progressive hepatic form of glycogen storage disease type IV with atypical liver pathology

Two cases of a non-progressive hepatic form of glycogen storage disease type IV with atypical liver pathology

Glycogen storage disease type IV (GSD IV) is a rare inborn metabolic disorder characterized by the accumulation of amylopectin-like glycogen in the liver or other organs. The hepatic subtype may appear normal at birth but rapidly develops to liver cirrhosis in infancy. Liver pathological findings he...

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Bibliographic Details
Main Authors: Keiko Ichimoto, Tomoo Fujisawa, Masaru Shimura, Takuya Fushimi, Makiko Tajika, Ayako Matsunaga, Minako Ogawa-Tominaga, Nana Akiyama, Yuki Naruke, Hiroshi Horie, Tokiko Fukuda, Hideo Sugie, Ayano Inui, Kei Murayama
Format: Article
Language:English
Published: Elsevier 2020-09-01
Series:Molecular Genetics and Metabolism Reports
Subjects:
Andersen disease
GBE1
GSD IV
M2BPGi
Nutrition therapy
Online Access:http://www.sciencedirect.com/science/article/pii/S2214426920300471
Description
Summary:Glycogen storage disease type IV (GSD IV) is a rare inborn metabolic disorder characterized by the accumulation of amylopectin-like glycogen in the liver or other organs. The hepatic subtype may appear normal at birth but rapidly develops to liver cirrhosis in infancy. Liver pathological findings help diagnose the hepatic form of the disease, supported by analyses of enzyme activity and GBE1 gene variants. Pathology usually shows periodic acid-Schiff (PAS) positive hepatocytes resistant to diastase. We report two cases of hepatic GSD IV with pathology showing PAS positive hepatocytes that were mostly digested by diastase, which differ from past cases. Gene analysis was critical for the diagnosis. Both cases were found to have the same variants c.288delA (p.Gly97GlufsTer46) and c.1825G > A (p.Glu609Lys). These findings suggest that c.1825G > A variant might be a common variant in the non-progressive hepatic form of GSD IV.
ISSN:2214-4269

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