PMID- 9463336 OWN - NLM STAT- MEDLINE DCOM- 19980406 LR - 20220408 IS - 0002-9297 (Print) IS - 1537-6605 (Electronic) IS - 0002-9297 (Linking) VI - 62 IP - 2 DP - 1998 Feb TI - Characterization of mutations in patients with multiple endocrine neoplasia type 1. PG - 232-44 AB - Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disorder characterized by tumors of the parathyroids, pancreatic islets, and anterior pituitary. The MEN1 gene, on chromosome 11q13, has recently been cloned, and mutations have been identified. We have characterized such MEN1 mutations, assessed the reliability of SSCP analysis for the detection of these mutations, and estimated the age-related penetrance for MEN1. Sixty-three unrelated MEN1 kindreds (195 affected and 396 unaffected members) were investigated for mutations in the 2,790-bp coding region and splice sites, by SSCP and DNA sequence analysis. We identified 47 mutations (12 nonsense mutations, 21 deletions, 7 insertions, 1 donor splice-site mutation, and 6 missense mutations), that were scattered throughout the coding region, together with six polymorphisms that had heterozygosity frequencies of 2%-44%. More than 10% of the mutations arose de novo, and four mutation hot spots accounted for >25% of the mutations. SSCP was found to be a sensitive and specific mutational screening method that detected >85% of the mutations. Two hundred and one MEN1 mutant-gene carriers (155 affected and 46 unaffected) were identified, and these helped to define the age-related penetrance of MEN1 as 7%, 52%, 87%, 98%, 99%, and 100% at 10, 20, 30, 40, 50, and 60 years of age, respectively. These results provide the basis for a molecular-genetic screening approach that will supplement the clinical evaluation and genetic counseling of members of MEN1 families. FAU - Bassett, J H AU - Bassett JH AD - MRC Molecular Endocrinology Group, MRC Clinical Sciences Centre, Imperial School of Medicine, Hammersmith Hospital, London W12 0NN, United Kingdom. FAU - Forbes, S A AU - Forbes SA FAU - Pannett, A A AU - Pannett AA FAU - Lloyd, S E AU - Lloyd SE FAU - Christie, P T AU - Christie PT FAU - Wooding, C AU - Wooding C FAU - Harding, B AU - Harding B FAU - Besser, G M AU - Besser GM FAU - Edwards, C R AU - Edwards CR FAU - Monson, J P AU - Monson JP FAU - Sampson, J AU - Sampson J FAU - Wass, J A AU - Wass JA FAU - Wheeler, M H AU - Wheeler MH FAU - Thakker, R V AU - Thakker RV LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Hum Genet JT - American journal of human genetics JID - 0370475 RN - 0 (DNA Transposable Elements) RN - 0 (MEN1 protein, human) RN - 0 (Neoplasm Proteins) RN - 0 (Proto-Oncogene Proteins) SB - IM MH - Adolescent MH - Adult MH - Age Factors MH - Aged MH - Alternative Splicing MH - Amino Acid Sequence MH - Base Sequence MH - Child MH - Child, Preschool MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 11 MH - DNA Transposable Elements MH - Exons MH - Female MH - Humans MH - Male MH - Microsatellite Repeats MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - *Mutation MH - Neoplasm Proteins/*genetics MH - Pedigree MH - Point Mutation MH - Polymorphism, Genetic MH - Polymorphism, Single-Stranded Conformational MH - *Proto-Oncogene Proteins MH - Sequence Deletion PMC - PMC1376903 EDAT- 1998/04/16 02:03 MHDA- 2000/03/21 09:00 PMCR- 1998/08/01 CRDT- 1998/04/16 02:03 PHST- 1998/04/16 02:03 [pubmed] PHST- 2000/03/21 09:00 [medline] PHST- 1998/04/16 02:03 [entrez] PHST- 1998/08/01 00:00 [pmc-release] AID - S0002-9297(07)63487-9 [pii] AID - 10.1086/301729 [doi] PST - ppublish SO - Am J Hum Genet. 1998 Feb;62(2):232-44. doi: 10.1086/301729.