PMID- 33312161 OWN - NLM STAT- MEDLINE DCOM- 20210603 LR - 20210603 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 11 DP - 2020 TI - Phenotypes Associated With MEN1 Syndrome: A Focus on Genotype-Phenotype Correlations. PG - 591501 LID - 10.3389/fendo.2020.591501 [doi] LID - 591501 AB - Multiple endocrine neoplasia type 1 (MEN1) is a rare autosomal dominant inherited tumor syndrome, associated with parathyroid, pituitary, and gastro-entero-pancreatic (GEP) neuroendocrine tumors (NETs). MEN1 is usually consequent to different germline and somatic mutations of the MEN1 tumor suppressor gene, although phenocopies have also been reported. This review analyzed main biomedical databases searching for reports on MEN1 gene mutations and focused on aggressive and aberrant clinical manifestations to investigate the potential genotype-phenotype correlation. Despite efforts made by several groups, this link remains elusive to date and evidence that aggressive or aberrant clinical phenotypes may be related to specific mutations has been provided by case reports and small groups of MEN1 patients or families. In such context, a higher risk of aggressive tumor phenotypes has been described in relation to frameshift and non-sense mutations, and predominantly associated with aggressive GEP NETs, particularly pancreatic NETs. In our experience a novel heterozygous missense mutation at c.836C>A in exon 6 was noticed in a MEN1 patient operated for macro-prolactinoma, who progressively developed recurrent parathyroid adenomas, expanding gastrinomas and, long after the first MEN1 manifestation, a neuroendocrine uterine carcinoma. In conclusion, proof of genotype-phenotype correlation is limited but current evidence hints at the need for long-term interdisciplinary surveillance in patients with aggressive phenotypes and genetically confirmed MEN1. CI - Copyright (c) 2020 Mele, Mencarelli, Caputo, Mai, Pagano, Aimaretti, Scacchi, Falchetti and Marzullo. FAU - Mele, Chiara AU - Mele C AD - Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy. AD - Istituto Auxologico Italiano, IRCCS, Division of General Medicine, S. Giuseppe Hospital, Piancavallo, Italy. FAU - Mencarelli, Monica AU - Mencarelli M AD - Istituto Auxologico Italiano, IRCCS, Laboratory of Molecular Biology, S. Giuseppe Hospital, Piancavallo, Italy. FAU - Caputo, Marina AU - Caputo M AD - Department of Health Sciences, University of Piemonte Orientale, Novara, Italy. AD - Division of Endocrinology, University Hospital "Maggiore della Carita", Novara, Italy. FAU - Mai, Stefania AU - Mai S AD - Istituto Auxologico Italiano, IRCCS, Laboratory of Metabolic Research, S. Giuseppe Hospital, Piancavallo, Italy. FAU - Pagano, Loredana AU - Pagano L AD - Division of Endocrinology, Diabetology and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy. FAU - Aimaretti, Gianluca AU - Aimaretti G AD - Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy. AD - Division of Endocrinology, University Hospital "Maggiore della Carita", Novara, Italy. FAU - Scacchi, Massimo AU - Scacchi M AD - Istituto Auxologico Italiano, IRCCS, Division of General Medicine, S. Giuseppe Hospital, Piancavallo, Italy. FAU - Falchetti, Alberto AU - Falchetti A AD - Istituto Auxologico Italiano, IRCCS, Rehabilitation Unit, S. Giuseppe Hospital, Unit for Bone Metabolism Diseases, Verbania, Italy. AD - Diabetes & Lab of Endocrine and Metabolic Research, Dept. of Clinical Sciences & Community Health, University of Milan, Milan, Italy. FAU - Marzullo, Paolo AU - Marzullo P AD - Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy. AD - Istituto Auxologico Italiano, IRCCS, Division of General Medicine, S. Giuseppe Hospital, Piancavallo, Italy. LA - eng PT - Journal Article PT - Review DEP - 20201118 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 RN - 0 (MEN1 protein, human) RN - 0 (Proto-Oncogene Proteins) SB - IM MH - Genetic Association Studies/*methods MH - Humans MH - Multiple Endocrine Neoplasia Type 1/*genetics/*pathology MH - *Mutation MH - Proto-Oncogene Proteins/*genetics PMC - PMC7708377 OTO - NOTNLM OT - MEN1 OT - genotype OT - mutations OT - phenotype OT - tumors EDAT- 2020/12/15 06:00 MHDA- 2021/06/04 06:00 PMCR- 2020/01/01 CRDT- 2020/12/14 10:56 PHST- 2020/08/04 00:00 [received] PHST- 2020/10/16 00:00 [accepted] PHST- 2020/12/14 10:56 [entrez] PHST- 2020/12/15 06:00 [pubmed] PHST- 2021/06/04 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2020.591501 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2020 Nov 18;11:591501. doi: 10.3389/fendo.2020.591501. eCollection 2020.