| Germline homozygous mutations at codon 804 in the RET protooncogene in medullary thyroid carcinoma/multiple endocrine neoplasia type 2A patients. | |
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MedLine Citation:
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PMID: 15741265 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effect of mutations at codon 804 in the RET protooncogene is disputed. Some studies have suggested that the V804L mutation causes the low penetrance multiple endocrine neoplasia type 2 syndrome, with late onset and relatively indolent course, whereas others have reported that V804L and V804M have an aggressive potential. In this paper, we report three apparently unrelated medullary thyroid carcinoma cases homozygous for these mutations. To clarify the phenotypic heterogeneity associated with these mutations, we compare the clinical data and age of diagnosis among these three homozygous patients, six other heterozygous cases from the same populations, and other homozygous and heterozygous subjects reported previously. The data are consistent with a model in which codon 804 mutations have low penetrance, the developing of medullary thyroid carcinoma being associated with a second germline or somatic mutation. The activity and (in the case of somatic mutations) timing of these other genetic alterations in the RET gene may explain the wide clinical variability associated with germline mutations at codon 804. |
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Authors:
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F Lesueur; A Cebrian; A Cranston; J Leyland; T M Faid; M R Clements; M Robledo; J Whittaker; B A J Ponder |
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Publication Detail:
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Type: Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't Date: 2005-03-01 |
Journal Detail:
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Title: The Journal of clinical endocrinology and metabolism Volume: 90 ISSN: 0021-972X ISO Abbreviation: J. Clin. Endocrinol. Metab. Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-05-26 Completed Date: 2005-07-05 Revised Date: 2012-06-04 |
Medline Journal Info:
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Nlm Unique ID: 0375362 Medline TA: J Clin Endocrinol Metab Country: United States |
Other Details:
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Languages: eng Pagination: 3454-7 Citation Subset: AIM; IM |
Affiliation:
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Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, United Kingdom. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Amino Acid Substitution Base Sequence Child Codon / genetics* Female Humans Male Middle Aged Multiple Endocrine Neoplasia Type 2a / genetics* Mutation, Missense* Oncogene Proteins / genetics* Proto-Oncogene Proteins c-ret Receptor Protein-Tyrosine Kinases / genetics* Thyroid Neoplasms / genetics* |
| Chemical | |
Reg. No./Substance:
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0/Codon; 0/Oncogene Proteins; EC 2.7.10.1/Proto-Oncogene Proteins c-ret; EC 2.7.10.1/RET protein, human; EC 2.7.10.1/Receptor Protein-Tyrosine Kinases |
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