Polymorphic markers of the glycogen debranching enzyme gene allowing linkage analysis in families with glycogen storage disease type III.
Glycogen storage disease type III (GSD-III), an autosomal recessive disease, is caused by deficient glycogen debranching enzyme (GDE) activity. We identified three polymorphic markers in the GDE gene using single strand conformation polymorphism (SSCP) analysis and DNA sequencing. They were -10G/A in the 5' non-translated region of exon 3,2001 + 8C/T in intron 16, and 3199C/T (P1067S) in exon 25. Two polymorphic markers (-10G/A and 2001 + 8C/T) were highly informative in both controls and GSD-III patients with heterozygosity values of 0.50 and 0.46, respectively. The third marker (3199C/T) had a heterozygosity value of 0.26. Restriction analysis of the PCR amplified genomic DNA products in two GSD-III families showed for the first time the potential use of these markers for carrier detection and prenatal diagnosis in this disease.
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- Sequence Analysis, DNA
- Polymorphism, Single-Stranded Conformational
- Polymorphism, Genetic
- Pedigree
- Molecular Sequence Data
- Male
- Humans
- Glycogen Storage Disease Type III
- Glycogen Debranching Enzyme System
- Genetics & Heredity
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Sequence Analysis, DNA
- Polymorphism, Single-Stranded Conformational
- Polymorphism, Genetic
- Pedigree
- Molecular Sequence Data
- Male
- Humans
- Glycogen Storage Disease Type III
- Glycogen Debranching Enzyme System
- Genetics & Heredity