PMID- 10576763 OWN - NLM STAT- MEDLINE DCOM- 19991228 LR - 20190905 IS - 0804-4643 (Print) IS - 0804-4643 (Linking) VI - 141 IP - 5 DP - 1999 Nov TI - Germline MEN1 mutations in sixteen Japanese families with multiple endocrine neoplasia type 1 (MEN1). PG - 475-80 AB - OBJECTIVE: Multiple endocrine neoplasia type 1 (MEN1) is a syndrome of endocrine tumors involving the parathyroids, anterior pituitary and enteropancreatic neuroendocrine tissues, and is inherited in an autosomal dominant manner. Recently, the gene responsible for this syndrome, MEN1, was positionally cloned in 11q13. We aimed to assess the significance of MEN1 gene diagnostics in families with MEN1. DESIGN: Sixteen probands of familial MEN1 and their 40 family members were subjected to the study. METHODS: Full-length sequencing of the open reading frame and exon-intron boundaries in the MEN1 gene was performed with probands of familial MEN1. Family members were examined for the identified mutation in the proband. RESULTS: We identified heterozygous germline mutations of the MEN1 gene in all of 16 Japanese MEN1 families examined, achieving the highest detectability of MEN1 mutations in familial MEN1 among studies that examined more than 10 families. Eleven kinds of the identified MEN1 germline mutations were novel. More than half were nonsense or frameshift mutations resulting in a premature stop codon (9/15; 60%), and no mutation hot spots or no apparent genotype-phenotype relationships were observed, in support of the results of other studies. We identified 40 mutant MEN1 gene carriers and 16 non-carriers in the course of the present study in those families. CONCLUSIONS: Analysis of the germline mutations in the MEN1 gene, providing significantly useful clinical information to probands and family members of MEN1, should be considered as a standard procedure and categorized as belonging to Group 1 cancer predisposition testing by the American Society of Clinical Oncology. FAU - Hai, N AU - Hai N AD - Department of Laboratory Medicine, Kyoto University School of Medicine, Kyoto 606-8507, Japan. FAU - Aoki, N AU - Aoki N FAU - Matsuda, A AU - Matsuda A FAU - Mori, T AU - Mori T FAU - Kosugi, S AU - Kosugi S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 RN - 0 (DNA Primers) RN - 0 (MEN1 protein, human) RN - 0 (Neoplasm Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 9007-49-2 (DNA) SB - IM MH - Adult MH - Aged MH - DNA/chemistry MH - DNA Primers/chemistry MH - Electrophoresis, Agar Gel MH - Electrophoresis, Polyacrylamide Gel MH - Female MH - Humans MH - Japan MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Mutation/*genetics MH - Neoplasm Proteins/chemistry/*genetics MH - Pancreatic Neoplasms/*genetics MH - Parathyroid Neoplasms/*genetics MH - Pituitary Neoplasms/*genetics MH - Polymerase Chain Reaction MH - *Proto-Oncogene Proteins MH - Sequence Analysis, DNA EDAT- 1999/11/27 00:00 MHDA- 1999/11/27 00:01 CRDT- 1999/11/27 00:00 PHST- 1999/11/27 00:00 [pubmed] PHST- 1999/11/27 00:01 [medline] PHST- 1999/11/27 00:00 [entrez] AID - 1410475 [pii] AID - 10.1530/eje.0.1410475 [doi] PST - ppublish SO - Eur J Endocrinol. 1999 Nov;141(5):475-80. doi: 10.1530/eje.0.1410475.