[…] type VI has a rather benign course, with risks of growth retardation, mild fasting hypoglycemia, hypotonia, and delayed motor milestones in early childhood.
[emedicine.medscape.com]
[…] different mutations in the PYGL gene have been reported in the literature. [7, 8, 5] A high frequency of missense mutations was found. [9] Mortality/Morbidity Glycogen storage disease
[emedicine.medscape.com]
