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[Multiple endocrine neoplasia: genetic aspects].
Bull Acad Natl Med. 2010 Jan; 194(1):81-95; discussion 95-6.BA

Abstract

Multiple endocrine neoplasia type 1 (MEN1) and type 2 (MEN2) are major genetic disorders carrying a high risk of endocrine tumor development. The mutated genes were identified in 1993 (MEN2-RET) and 1997 (MEN1), enabling genetic testing and functional studies. Genetic analysis has led to new clinical and therapeutic strategies for MEN1/2 patients, and has improved our understanding of the pathways underlying the development of such tumors, which occur in an autosomal dominant manner and with high penetrance. The MEN1 gene encodes menin, a protein involved in many cell functions, such as transcription, genome stability, cell cycling and apoptosis. The MEN1 gene has 10 exons, and its exhaustive analysis in MEN1 patients helps guide their management. MEN2 is related to activating missense mutations in the RET protooncogene, which encodes a tyrosine kinase receptor (TKR). RET activation occurs upon autodimerization induced by the binding of specific ligands belonging to glial cell-derived neurotrophic factor-like family (GFL) proteins, regulated by coreceptors. The position of missense mutations--in the extracellular or intracellular TK domains--influences the aggressiveness of the most frequent malignancy, medullary thyroid carcinoma, establishing a genotype-phenotype correlation. We also briefly describe the genetic basis of three other inherited states predisposing individuals to endocrine tumors, namely Carney's syndrome, hyperparathyroidism type 2 (HRPT2) and familial isolated pituitary adenoma (FIPA), which are related to inactivating mutations in the PRKAR1-alpha, HRPT2 and AIP genes, respectively.

Authors+Show Affiliations

Génétique Moléculaire et Médicale, Hôpital Edouard Herriot, F-69437 - Lyon cedex 03. alain.calender@chu-lyon.frNo affiliation info available

Pub Type(s)

English Abstract
Journal Article
Review

Language

fre

PubMed ID

20669561

Citation

Calender, Alain, and Groupe d'étude des Tumeurs Endocrines. "[Multiple Endocrine Neoplasia: Genetic Aspects]." Bulletin De l'Academie Nationale De Medecine, vol. 194, no. 1, 2010, pp. 81-95; discussion 95-6.
Calender A, Groupe d'étude des Tumeurs Endocrines. [Multiple endocrine neoplasia: genetic aspects]. Bull Acad Natl Med. 2010;194(1):81-95; discussion 95-6.
Calender, A. (2010). [Multiple endocrine neoplasia: genetic aspects]. Bulletin De l'Academie Nationale De Medecine, 194(1), 81-95; discussion 95-6.
Calender A, Groupe d'étude des Tumeurs Endocrines. [Multiple Endocrine Neoplasia: Genetic Aspects]. Bull Acad Natl Med. 2010;194(1):81-95; discussion 95-6. PubMed PMID: 20669561.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Multiple endocrine neoplasia: genetic aspects]. AU - Calender,Alain, AU - ,, PY - 2010/7/31/entrez PY - 2010/7/31/pubmed PY - 2010/9/17/medline SP - 81-95; discussion 95-6 JF - Bulletin de l'Academie nationale de medecine JO - Bull Acad Natl Med VL - 194 IS - 1 N2 - Multiple endocrine neoplasia type 1 (MEN1) and type 2 (MEN2) are major genetic disorders carrying a high risk of endocrine tumor development. The mutated genes were identified in 1993 (MEN2-RET) and 1997 (MEN1), enabling genetic testing and functional studies. Genetic analysis has led to new clinical and therapeutic strategies for MEN1/2 patients, and has improved our understanding of the pathways underlying the development of such tumors, which occur in an autosomal dominant manner and with high penetrance. The MEN1 gene encodes menin, a protein involved in many cell functions, such as transcription, genome stability, cell cycling and apoptosis. The MEN1 gene has 10 exons, and its exhaustive analysis in MEN1 patients helps guide their management. MEN2 is related to activating missense mutations in the RET protooncogene, which encodes a tyrosine kinase receptor (TKR). RET activation occurs upon autodimerization induced by the binding of specific ligands belonging to glial cell-derived neurotrophic factor-like family (GFL) proteins, regulated by coreceptors. The position of missense mutations--in the extracellular or intracellular TK domains--influences the aggressiveness of the most frequent malignancy, medullary thyroid carcinoma, establishing a genotype-phenotype correlation. We also briefly describe the genetic basis of three other inherited states predisposing individuals to endocrine tumors, namely Carney's syndrome, hyperparathyroidism type 2 (HRPT2) and familial isolated pituitary adenoma (FIPA), which are related to inactivating mutations in the PRKAR1-alpha, HRPT2 and AIP genes, respectively. SN - 0001-4079 UR - https://www.unboundmedicine.com/medline/citation/20669561/[Multiple_endocrine_neoplasia:_genetic_aspects]_ L2 - http://www.diseaseinfosearch.org/result/4954 DB - PRIME DP - Unbound Medicine ER -