PMID- 20660572 OWN - NLM STAT- MEDLINE DCOM- 20110215 LR - 20220410 IS - 1479-6821 (Electronic) IS - 1351-0088 (Linking) VI - 17 IP - 4 DP - 2010 Dec TI - Systematic comparison of sporadic and syndromic pancreatic islet cell tumors. PG - 875-83 LID - 10.1677/ERC-10-0037 [doi] AB - Pancreatic islet cell tumors (ICTs) occur as sporadic neoplasias or as a manifestation of multiple endocrine neoplasia type 1 (MEN1) and von Hippel-Lindau disease (VHL). Molecular classification of ICTs is mandatory for timely diagnosis and surveillance. Systematic comparison of VHL-ICTs and sporadic ICTs has been lacking. Our registry-based approaches used the German NET-Registry with 259 patients with neuroendocrine tumors (NETs), who were primarily diagnosed with NETs, and the German VHL-Registry with 485 molecular genetically confirmed patients who had undergone magnetic resonance imaging or computed tomography of the abdomen. All patients provided blood DNA for testing of the MEN1 and VHL genes for intragenic mutations and large deletions. In the NET-Registry, 9/101 patients (8.9%) with ICTs had germline mutations, 8 in MEN1 and 1 in VHL. In the VHL-Registry, prevalence of NETs was 52/487 (10.6%), and all were ICTs. Interestingly, of those with VHL p.R167W, 47% developed ICTs, compared to 2% of those with p.Y98H. In total, there were 92 truly sporadic, i.e. mutation-negative ICT patients. Comparing these with the 53 VHL-ICT patients, the statistically significant differences were predominance of female gender (P=0.01), multifocal ICTs (P=0.0029), and lower malignancy rate (P<0.001) in VHL-ICTs compared to sporadic cases. VHL was prevalent in <0.5% of NETs, while NETs occur in approximately 10% of VHL, virtually exclusively as ICTs, which are rarely the first presentation. Patients with NETs should not be subjected to genetic testing of the VHL gene, unless they have multifocal ICTs, other VHL-associated tumors, and/or a family history for VHL. FAU - Erlic, Zoran AU - Erlic Z AD - Department of Nephrology, Albert-Ludwigs-University, Freiburg, Germany. FAU - Ploeckinger, Ursula AU - Ploeckinger U FAU - Cascon, Alberto AU - Cascon A FAU - Hoffmann, Michael M AU - Hoffmann MM FAU - von Duecker, Laura AU - von Duecker L FAU - Winter, Aurelia AU - Winter A FAU - Kammel, Gerit AU - Kammel G FAU - Bacher, Janina AU - Bacher J FAU - Sullivan, Maren AU - Sullivan M FAU - Isermann, Berend AU - Isermann B FAU - Fischer, Lars AU - Fischer L FAU - Raffel, Andreas AU - Raffel A FAU - Knoefel, Wolfram Trudo AU - Knoefel WT FAU - Schott, Matthias AU - Schott M FAU - Baumann, Tobias AU - Baumann T FAU - Schaefer, Oliver AU - Schaefer O FAU - Keck, Tobias AU - Keck T FAU - Baum, Richard P AU - Baum RP FAU - Milos, Ioana AU - Milos I FAU - Muresan, Mihaela AU - Muresan M FAU - Peczkowska, Mariola AU - Peczkowska M FAU - Januszewicz, Andrzej AU - Januszewicz A FAU - Cupisti, Kenko AU - Cupisti K FAU - Tonjes, Anke AU - Tonjes A FAU - Fasshauer, Mathias AU - Fasshauer M FAU - Langrehr, Jan AU - Langrehr J FAU - von Wussow, Peter AU - von Wussow P FAU - Agaimy, Abbas AU - Agaimy A FAU - Schlimok, Gunter AU - Schlimok G FAU - Lamberts, Regina AU - Lamberts R FAU - Wiech, Thorsten AU - Wiech T FAU - Schmid, Kurt Werner AU - Schmid KW FAU - Weber, Alexander AU - Weber A FAU - Nunez, Mercedes AU - Nunez M FAU - Robledo, Mercedes AU - Robledo M FAU - Eng, Charis AU - Eng C FAU - Neumann, Hartmut P H AU - Neumann HP CN - VHL-ICT Consortium CN - German NET Registry LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20101005 PL - England TA - Endocr Relat Cancer JT - Endocrine-related cancer JID - 9436481 RN - 0 (DNA, Neoplasm) SB - IM MH - Adenoma, Islet Cell MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Child MH - DNA, Neoplasm/chemistry/genetics MH - Female MH - Genetic Variation MH - Germ-Line Mutation MH - Germany/epidemiology MH - Humans MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/epidemiology/*genetics MH - Neuroendocrine Tumors/epidemiology/genetics MH - Polymerase Chain Reaction MH - Prevalence MH - Sequence Analysis, DNA MH - Young Adult MH - von Hippel-Lindau Disease/epidemiology/*genetics EDAT- 2010/07/28 06:00 MHDA- 2011/02/16 06:00 CRDT- 2010/07/28 06:00 PHST- 2010/07/28 06:00 [entrez] PHST- 2010/07/28 06:00 [pubmed] PHST- 2011/02/16 06:00 [medline] AID - ERC-10-0037 [pii] AID - 10.1677/ERC-10-0037 [doi] PST - epublish SO - Endocr Relat Cancer. 2010 Oct 5;17(4):875-83. doi: 10.1677/ERC-10-0037. Print 2010 Dec.