Publication Date:
1997-08-08
Description:
Tuberous sclerosis complex (TSC) is an autosomal dominant disorder characterized by the widespread development of distinctive tumors termed hamartomas. TSC-determining loci have been mapped to chromosomes 9q34 (TSC1) and 16p13 (TSC2). The TSC1 gene was identified from a 900-kilobase region containing at least 30 genes. The 8.6-kilobase TSC1 transcript is widely expressed and encodes a protein of 130 kilodaltons (hamartin) that has homology to a putative yeast protein of unknown function. Thirty-two distinct mutations were identified in TSC1, 30 of which were truncating, and a single mutation (2105delAAAG) was seen in six apparently unrelated patients. In one of these six, a somatic mutation in the wild-type allele was found in a TSC-associated renal carcinoma, which suggests that hamartin acts as a tumor suppressor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Slegtenhorst, M -- de Hoogt, R -- Hermans, C -- Nellist, M -- Janssen, B -- Verhoef, S -- Lindhout, D -- van den Ouweland, A -- Halley, D -- Young, J -- Burley, M -- Jeremiah, S -- Woodward, K -- Nahmias, J -- Fox, M -- Ekong, R -- Osborne, J -- Wolfe, J -- Povey, S -- Snell, R G -- Cheadle, J P -- Jones, A C -- Tachataki, M -- Ravine, D -- Sampson, J R -- Reeve, M P -- Richardson, P -- Wilmer, F -- Munro, C -- Hawkins, T L -- Sepp, T -- Ali, J B -- Ward, S -- Green, A J -- Yates, J R -- Kwiatkowska, J -- Henske, E P -- Short, M P -- Haines, J H -- Jozwiak, S -- Kwiatkowski, D J -- New York, N.Y. -- Science. 1997 Aug 8;277(5327):805-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Clinical Genetics, Erasmus University and University Hospital, Rotterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9242607" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Sequence
;
Chromosome Mapping
;
Chromosomes, Human, Pair 9/*genetics
;
Exons
;
*Genes, Tumor Suppressor
;
Humans
;
Microsatellite Repeats
;
Molecular Sequence Data
;
Molecular Weight
;
Mutation
;
Polymerase Chain Reaction
;
Proteins/chemistry/*genetics/physiology
;
Repressor Proteins/genetics/physiology
;
Tuberous Sclerosis/*genetics
;
Tumor Suppressor Proteins
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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