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GLYCOGEN STORAGE DISEASE TYPE II. ADULT ONSET

GLYCOGEN STORAGE DISEASE TYPE II. ADULT ONSET
GSD2; GLYCOGEN STORAGE DISEASE II
232300
OMIM = Online Mendelian Inheritance of Men
420429
Lysosomal alpha-glucosidase
3.2.1.3
17q25.3
E74.0
rare (1:100000 )
autosomal recessive
mutation in the GAA gene
1) infantile onset: cardiomegaly, progressive weakness, macroglossia
2) juvenile onset: (cardiac involvement), slower progression 3) adult onset: slowly progressive myopathy
Laboratory findings    alpha-1,4-Glucosidase dec (muscle)
    alpha-Glucosidase dec (fibroblasts)
    alpha-Glucosidase dec (muscle)
Symptoms   dyspnea
    fatigue, severe or unusual
    headache (severe, recurrent or occipital, migraine)
    onset, adulthood
    progressive muscle defect
    respiratory insufficiency