Abstract |
Hereditary multiple exostoses is an autosomal dominant disorder that is characterized by short stature and multiple, benign bone tumours. In a majority of families, the genetic defect (EXT1) is linked to the Langer-Giedion syndrome chromosomal region in 8q24.1. From this region we have cloned and characterized a cDNA which spans chromosomal breakpoints previously identified in two multiple exostoses patients. Furthermore, the gene harbours frameshift mutations in affected members of two EXT1 families. The cDNA has a coding region of 2,238 bp with no apparent homology to other known gene sequences and thus its function remains elusive. However, recent studies in sporadic and exostosis-derived chondrosarcomas suggest that the 8q24.1-encoded EXT1 gene may have tumour suppressor function.
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Authors | J Ahn, H J Lüdecke, S Lindow, W A Horton, B Lee, M J Wagner, B Horsthemke, D E Wells |
Journal | Nature genetics
(Nat Genet)
Vol. 11
Issue 2
Pg. 137-43
(Oct 1995)
ISSN: 1061-4036 [Print] United States |
PMID | 7550340
(Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
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Chemical References |
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Topics |
- Amino Acid Sequence
- Base Sequence
- Chromosome Mapping
- Chromosomes, Human, Pair 8
- Cloning, Molecular
- Cosmids
- DNA Mutational Analysis
- DNA Primers
- Exostoses, Multiple Hereditary
(genetics)
- Female
- Gene Library
- Genes, Tumor Suppressor
- Genetic Linkage
- Humans
- In Situ Hybridization, Fluorescence
- Langer-Giedion Syndrome
(genetics)
- Male
- Molecular Sequence Data
- Pedigree
- Polymerase Chain Reaction
- Promoter Regions, Genetic
- Protein Biosynthesis
- Restriction Mapping
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