PMID- 9354421 OWN - NLM STAT- MEDLINE DCOM- 19971120 LR - 20041117 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 57 IP - 21 DP - 1997 Nov 1 TI - Somatic mutations of the MEN1 tumor suppressor gene in sporadic gastrinomas and insulinomas. PG - 4682-6 AB - Gastrinomas and insulinomas are frequent in multiple endocrine neoplasia type 1 (MEN1). The MEN1 tumor suppressor gene was recently identified. To elucidate the etiological role of the MEN1 gene in sporadic enteropancreatic endocrine tumorigenesis, we analyzed tumors (28 gastrinomas and 12 insulinomas) from 40 patients for MEN1 gene mutations and allelic deletions. One copy of the MEN1 gene was found to be deleted in 25 of 27 (93%) sporadic gastrinomas and in 6 of 12 (50%) sporadic insulinomas. MEN1 gene mutations were identified in 9 of 27 (33%) sporadic gastrinomas and 2 of 12 (17%) insulinomas and were not seen in corresponding germ-line DNA sequence. A specific MEN1 mutation was detected in one gastrinoma and in the corresponding germ-line DNA of a patient who had no family history of MEN1. Somatic MEN1 gene mutations and deletions play a critical role in the tumorigenesis of sporadic gastrinomas and may also contribute to the development of a subgroup of insulinomas. FAU - Zhuang, Z AU - Zhuang Z AD - Laboratory of Pathology, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA. FAU - Vortmeyer, A O AU - Vortmeyer AO FAU - Pack, S AU - Pack S FAU - Huang, S AU - Huang S FAU - Pham, T A AU - Pham TA FAU - Wang, C AU - Wang C FAU - Park, W S AU - Park WS FAU - Agarwal, S K AU - Agarwal SK FAU - Debelenko, L V AU - Debelenko LV FAU - Kester, M AU - Kester M FAU - Guru, S C AU - Guru SC FAU - Manickam, P AU - Manickam P FAU - Olufemi, S E AU - Olufemi SE FAU - Yu, F AU - Yu F FAU - Heppner, C AU - Heppner C FAU - Crabtree, J S AU - Crabtree JS FAU - Skarulis, M C AU - Skarulis MC FAU - Venzon, D J AU - Venzon DJ FAU - Emmert-Buck, M R AU - Emmert-Buck MR FAU - Spiegel, A M AU - Spiegel AM FAU - Chandrasekharappa, S C AU - Chandrasekharappa SC FAU - Collins, F S AU - Collins FS FAU - Burns, A L AU - Burns AL FAU - Marx, S J AU - Marx SJ FAU - Lubensky, I A AU - Lubensky IA AU - et al. LA - eng PT - Journal Article PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (DNA, Neoplasm) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - DNA Mutational Analysis MH - DNA, Neoplasm/genetics MH - Female MH - Gastrinoma/*genetics MH - Gene Deletion MH - Genes, Tumor Suppressor/*genetics MH - Germ-Line Mutation MH - Humans MH - In Situ Hybridization, Fluorescence MH - Insulinoma/*genetics MH - Jejunal Neoplasms/*genetics MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Mutation/*genetics MH - Pancreatic Neoplasms/*genetics EDAT- 1997/11/14 00:00 MHDA- 1997/11/14 00:01 CRDT- 1997/11/14 00:00 PHST- 1997/11/14 00:00 [pubmed] PHST- 1997/11/14 00:01 [medline] PHST- 1997/11/14 00:00 [entrez] PST - ppublish SO - Cancer Res. 1997 Nov 1;57(21):4682-6.