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    Am J Med Genet. 1992 Mar 1;42(5):696-9.

    Glycogen storage disease type III with muscle involvement: reappraisal of phenotypic variability and prognosis.

    Source

    Department of Pediatrics, Wakayama Red Cross Hospital, Japan.

    Abstract

    A review of the case histories of 19 Japanese patients with enzymatically proven glycogen storage disease (GSD) III who developed muscular symptoms at various ages illustrates the phenotypic variability of this disease. There seem to be 4 subgroups of GSD III with muscle involvement according to the clinical symptoms. The first group of patients is characterized by the childhood onset of muscle weakness and hepatic disorders. The second group of patients develops muscular symptoms in adult years while the liver symptoms start in childhood. The third group includes the patients whose muscle weakness started in adult years long after liver symptoms in childhood had disappeared. The fourth group shows only muscular symptoms as adults without any sign or history of liver dysfunction since childhood. The prognosis for each subgroup seems to be different; however, none of them appears to be better than that for GSD I, as has been suggested previously.

    PMID:
    1632441
    [PubMed - indexed for MEDLINE]

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