PMID- 14686752 OWN - NLM STAT- MEDLINE DCOM- 20040401 LR - 20190605 IS - 0918-2918 (Print) IS - 0918-2918 (Linking) VI - 42 IP - 11 DP - 2003 Nov TI - A novel missense mutation of the MEN1 gene in a multiple endocrine neoplasia type 1 patient associated with carcinoid syndrome. PG - 1112-6 AB - We report a multiple endocrine neoplasia type 1 (MEN1) patient associated with carcinoid syndrome. A 50-year-old woman had parathyroid hyperplasia with primary hyperparathyroidism, a pancreatic tumor and carcinoid tumors in the liver and duodenum. The primary lesion of the carcinoid was probably the bronchus. Direct sequencing analysis revealed a novel missense mutation at codon 342 in exon 7 causing an amino acid change from alanine to proline (A342P) of the MEN1 gene. Loss of heterozygosity (LOH) was also detected in the resected parathyroid tissue. This mutation appeared to play an important role in the tumorigenesis of the endocrine tissues in the present case. FAU - Ukita, Chizuko AU - Ukita C AD - Department of Internal Medicine, Kyoto First Red Cross Hospital, 15-749 Honmachi, Higashiyama-ku, Kyoto 605-0981. FAU - Yamaguchi, Makiko AU - Yamaguchi M FAU - Tanaka, Toru AU - Tanaka T FAU - Shigeta, Hirofumi AU - Shigeta H FAU - Nishikawa, Mitsushige AU - Nishikawa M LA - eng PT - Case Reports PT - Journal Article PL - Japan TA - Intern Med JT - Internal medicine (Tokyo, Japan) JID - 9204241 RN - 9DLQ4CIU6V (Proline) RN - OF5P57N2ZX (Alanine) SB - IM MH - Alanine/genetics MH - Carcinoid Tumor/*genetics MH - DNA Mutational Analysis MH - Duodenal Neoplasms/genetics MH - Female MH - Fluorescence MH - Humans MH - Hyperparathyroidism/genetics MH - Immunohistochemistry MH - Liver Neoplasms/genetics/pathology MH - Loss of Heterozygosity MH - Microsatellite Repeats MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - *Mutation, Missense MH - Pancreatic Neoplasms/genetics MH - Parathyroid Glands/metabolism MH - Proline/genetics EDAT- 2003/12/23 05:00 MHDA- 2004/04/02 05:00 CRDT- 2003/12/23 05:00 PHST- 2003/12/23 05:00 [pubmed] PHST- 2004/04/02 05:00 [medline] PHST- 2003/12/23 05:00 [entrez] AID - 10.2169/internalmedicine.42.1112 [doi] PST - ppublish SO - Intern Med. 2003 Nov;42(11):1112-6. doi: 10.2169/internalmedicine.42.1112.