A nonsense mutation due to a single base insertion in the 3'-coding region of glycogen debranching enzyme gene associated with a severe phenotype in a patient with glycogen storage disease type IIIa.

Published

Journal Article

Glycogen storage disease type III (GSD-III) is an autosomal recessive disease resulting from deficient glycogen debranching enzyme (GDE) activity. A child with GDE deficient in both liver and muscle (GSD-IIIa) had recurrent hypoglycemia, seizures, severe cardiomegaly, and hepatomegaly and died at 4 years of age. Analysis of the GDE gene in this child by single-strand conformation polymorphism, followed by direct DNA sequencing and restriction analysis, revealed an insertion of a nucleotide A into position 4529 of the GDE cDNA (4529insA). This insertion resulted in substitution of a tyrosine to a stop codon at amino acid 1510 (Y1510X). The 4529insA mutation appeared to be homozygous in this patient and was not found in 20 unrelated controls or 18 other GSD-III patients (14 GSD-IIIa and 4 GSD-IIIb). This is the first identification of a disease mutation in this gene, and the data suggest that homozygous 4529insA may be associated with a severe phenotype in GSD-IIIa.

Full Text

Duke Authors

Cited Authors

  • Shen, J; Bao, Y; Chen, YT

Published Date

  • 1997

Published In

Volume / Issue

  • 9 / 1

Start / End Page

  • 37 - 40

PubMed ID

  • 8990006

Pubmed Central ID

  • 8990006

International Standard Serial Number (ISSN)

  • 1059-7794

Digital Object Identifier (DOI)

  • 10.1002/(SICI)1098-1004(1997)9:1<37::AID-HUMU6>3.0.CO;2-M

Language

  • eng

Conference Location

  • United States