title: Germline mutations of the MEN1 gene in familial multiple endocrine neoplasia type 1 and related states.
abstract: Familial multiple endocrine neoplasia type 1 (FMEN1) is an autosomal dominant trait characterized by tumors of the parathyroids, gastro-intestinal endocrine tissue, anterior pituitary and other tissues. We recently cloned the MEN1 gene and confirmed its identity by finding mutations in FMEN1. We have now extended our mutation analysis to 34 more unrelated FMEN1 probands and to two related states, sporadic MEN1 and familial hyperparathyroidism. There was a high prevalence of heterozygous germline MEN1 mutations in sporadic MEN1 (8/11 cases) and in FMEN1 (47/50 probands). One case of sporadic MEN1 was proven to be a new MEN1 mutation. Eight different mutations were observed more than once in FMEN1. Forty different mutations (32 FMEN1 and eight sporadic MEN1) were distributed across the MEN1 gene. Most predicted loss of function of the encoded menin protein, supporting the prediction that MEN1 is a tumor suppressor gene. No MEN1 germline mutation was found in five probands with familial hyperparathyroidism, suggesting that familial hyperparathyroidism often is caused by mutation in another gene or gene(s).
authors.affiliation: Metabolic Diseases Branch, NIDDK, National Institutes of Health, Bethesda, Maryland 20892, USA.
authors.forename: S K
authors.initials: SK
authors.lastname: Agarwal
authors.forename: M B
authors.initials: MB
authors.lastname: Kester
authors.forename: L V
authors.initials: LV
authors.lastname: Debelenko
authors.forename: C
authors.initials: C
authors.lastname: Heppner
authors.forename: M R
authors.initials: MR
authors.lastname: Emmert-Buck
authors.forename: M C
authors.initials: MC
authors.lastname: Skarulis
authors.forename: J L
authors.initials: JL
authors.lastname: Doppman
authors.forename: Y S
authors.initials: YS
authors.lastname: Kim
authors.forename: I A
authors.initials: IA
authors.lastname: Lubensky
authors.forename: Z
authors.initials: Z
authors.lastname: Zhuang
authors.forename: J S
authors.initials: JS
authors.lastname: Green
authors.forename: S C
authors.initials: SC
authors.lastname: Guru
authors.forename: P
authors.initials: P
authors.lastname: Manickam
authors.forename: S E
authors.initials: SE
authors.lastname: Olufemi
authors.forename: L A
authors.initials: LA
authors.lastname: Liotta
authors.forename: S C
authors.initials: SC
authors.lastname: Chandrasekharappa
authors.forename: F S
authors.initials: FS
authors.lastname: Collins
authors.forename: A M
authors.initials: AM
authors.lastname: Spiegel
authors.forename: A L
authors.initials: AL
authors.lastname: Burns
authors.forename: S J
authors.initials: SJ
authors.lastname: Marx
mesh_terms: D000328:Adult; D000368:Aged; D018095:Germ-Line Mutation; D006801:Humans; D006961:Hyperparathyroidism / Q000235:genetics*; D008875:Middle Aged; D018761:Multiple Endocrine Neoplasia Type 1 / Q000235:genetics*; D009363:Neoplasm Proteins / Q000235:genetics*; D010375:Pedigree; D011110:Polymorphism, Genetic; D011518:Proto-Oncogene Proteins
chemical_list: C105373:MEN1 protein, human; D009363:Neoplasm Proteins; D011518:Proto-Oncogene Proteins