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Bräutigam K, Nesti C, Riss P, Scheuba C, Niederle B, Grob T, Di Domenico A, Neuenschwander M, Mazal P, Köhn N, Trepp R, Perren A, Kaderli RM. Syndromic MEN1 parathyroid adenomas consist of both subclonal nodules and clonally independent tumors. Virchows Arch 2024; 484:789-798. [PMID: 38244045 PMCID: PMC11106174 DOI: 10.1007/s00428-023-03730-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/11/2023] [Accepted: 12/26/2023] [Indexed: 01/22/2024]
Abstract
Primary hyperparathyroidism with parathyroid tumors is a typical manifestation of Multiple Endocrine Neoplasia Type 1 (MEN1) and is historically termed "primary hyperplasia". Whether these tumors represent a multi-glandular clonal disease or hyperplasia has not been robustly proven so far. Loss of Menin protein expression is associated with inactivation of both alleles and a good surrogate for a MEN1 gene mutation. The cyclin-dependent kinase inhibitor 1B (CDKN1B) gene is mutated in MEN4 and encodes for protein p27 whose expression is poorly studied in the syndromic MEN1 setting.Here, we analyzed histomorphology and protein expression of Menin and p27 in parathyroid adenomas of 25 patients of two independent, well-characterized MEN1 cohorts. The pattern of loss of heterozygosity (LOH) was assessed by fluorescence in situ hybridization (FISH) in one MEN1-associated parathyroid adenoma. Further, next-generation sequencing (NGS) was performed on eleven nodules of four MEN1 patients.Morphologically, the majority of MEN1 adenomas consisted of multiple distinct nodules, in which Menin expression was mostly lost and p27 protein expression reduced. FISH analysis revealed that most nodules exhibited MEN1 loss, with or without the loss of centromere 11. NGS demonstrated both subclonal evolution and the existence of clonally unrelated tumors.Syndromic MEN1 parathyroid adenomas therefore consist of multiple clones with subclones, which supports the current concept of the novel WHO classification of parathyroid tumors (2022). p27 expression was lost in a large fraction of MEN1 parathyroids and must therefore be used with caution in suggesting MEN4.
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Affiliation(s)
- Konstantin Bräutigam
- Institute of Tissue Medicine and Pathology, University of Bern, Murtenstr. 31, 3008, Bern, Switzerland.
| | - Cédric Nesti
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Philipp Riss
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, Austria
| | - Christian Scheuba
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, Austria
| | - Bruno Niederle
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, Austria
| | - Tobias Grob
- Institute of Tissue Medicine and Pathology, University of Bern, Murtenstr. 31, 3008, Bern, Switzerland
| | - Annunziata Di Domenico
- Institute of Tissue Medicine and Pathology, University of Bern, Murtenstr. 31, 3008, Bern, Switzerland
| | - Maja Neuenschwander
- Institute of Tissue Medicine and Pathology, University of Bern, Murtenstr. 31, 3008, Bern, Switzerland
| | - Peter Mazal
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Nastassja Köhn
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department of General Surgery, Cantonal Hospital of Aarau, Aarau, Switzerland
| | - Roman Trepp
- Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Aurel Perren
- Institute of Tissue Medicine and Pathology, University of Bern, Murtenstr. 31, 3008, Bern, Switzerland
| | - Reto M Kaderli
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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2
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Huby T, Le Guillou E, Burin des Roziers C, Pacot L, Briand-Suleau A, Chansavang A, Toussaint A, Duchossoy V, Vaucouleur N, Benoit V, Lodé L, Molac C, North MO, Grotto S, Tsatsaris V, Jouinot A, Cochand-Priollet B, Paepegaey AC, Nectoux J, Groussin L, Pasmant E. Noninvasive Prenatal Diagnosis of a Paternally Inherited MEN1 Pathogenic Splicing Variant. J Clin Endocrinol Metab 2022; 107:e1367-e1373. [PMID: 34897474 DOI: 10.1210/clinem/dgab894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disease caused by mutations in the tumor suppressor gene MEN1. The uncertainty of pathogenicity of MEN1 variants complexifies the selection of the patients likely to benefit from specific care. OBJECTIVE MEN1-mutated patients should be offered tailored tumor screening and genetic counseling. We present a patient with hyperparathyroidism for whom genetic analysis identified a variant of uncertain significance in the MEN1 gene (NM_130799.2): c.654G > T p.(Arg218=). Additional functional genetic tests were performed to classify the variant as pathogenic and allowed prenatal testing. DESIGN Targeted next generation sequencing identified a synonymous variant in the MEN1 gene in a 26-year-old male with symptomatic primary hyperparathyroidism. In silico and in vitro genetic tests were performed to assess variant pathogenicity. RESULTS Genetic testing of the proband's unaffected parents showed the variant occurred de novo. Transcript study showed a splicing defect leading to an in-frame deletion. The classification of the MEN1 variant as pathogenic confirmed the diagnosis of MEN1 and recommended an adapted medical care and follow-up. Pathogenic classification also allowed to propose a genetic counseling to the proband and his wife. Noninvasive prenatal diagnosis was performed with a personalized medicine-based protocol by detection of the paternally inherited variant in maternal plasmatic cell free DNA, using digital PCR. CONCLUSION We showed that functional genetic analysis can help to assess the pathogenicity of a MEN1 variant with crucial consequences for medical care and genetic counseling decisions.
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Affiliation(s)
- Thomas Huby
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Edouard Le Guillou
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Cyril Burin des Roziers
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Laurence Pacot
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Audrey Briand-Suleau
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Albain Chansavang
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
| | - Aurélie Toussaint
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Véronique Duchossoy
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Nicolas Vaucouleur
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Virginie Benoit
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Laurence Lodé
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Clémence Molac
- Maternité Port-Royal, FHU PREMA, AP-HP, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Marie-Odile North
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Sarah Grotto
- Maternité Port-Royal, FHU PREMA, AP-HP, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Vassilis Tsatsaris
- Maternité Port-Royal, FHU PREMA, AP-HP, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Anne Jouinot
- Department of Endocrinology, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Béatrix Cochand-Priollet
- Department of Pathology, Cochin Hospital, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | | | - Juliette Nectoux
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
| | - Lionel Groussin
- Department of Endocrinology, Hôpital Cochin, AP-HP.Centre-Université de Paris, Université de Paris, Paris, France
| | - Eric Pasmant
- Service de Génétique et Biologie Moléculaires, Hôpital Cochin, DMU BioPhyGen, Assistance Publique-Hôpitaux de Paris, AP-HP.Centre-Université de Paris, Paris, France
- Institut Cochin, Inserm U1016, CNRS UMR8104, Université de Paris, CARPEM, Paris, France
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Hu WM, Zhang Q, Huang LH, Mo ZH, Long XD, Yang YB, Yang WJ, Liu J, Jin P. Identification of Novel Variants in MEN1: A Study Conducted with Four Multiple Endocrine Neoplasia Type 1 Patients. Horm Metab Res 2020; 52:788-795. [PMID: 32299109 DOI: 10.1055/a-1147-1375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant inherited endocrine tumor syndrome caused by inactivating variants of the MEN1 gene. The aim of this study is to explore the clinical and genetic characteristics of four MEN1 patients. We isolated genomic deoxyribonucleic acid from lymphocytes, parathyroid, and thymic tumoral tissue specimens from the MEN1 patients. All exons of the MEN1 and CDNK1B genes and adjacent exon-intron sequences were amplified by polymerase chain reaction and subsequently sequenced. Further, the splice alterations were studied by sequencing the amplified RT-PCR products for MEN1 cDNA. We identified four heterozygous MEN1 germline variants: c.564delC, c.1268G>A, IVS5+5delG, and c.1546_1547insC. Both c.564delC and IVS5+5delG were novel variants. The impact of the MEN1 splice variant, IVS5+5delG, was evaluated using bioinformatics and in vitro analyses. The analyses indicated that this variant resulted in skipping of the neighboring exon and was disease-causing. Two novel somatic variants, c.249_252delGTCT and c.313_314insC, were found. Additionally, loss of heterozygosity (LOH) for the MEN1 locus (IVS5+5delG and c.564delC) was found in tumor tissue samples from the MEN1 patients, consistent with Knudson's two-hit mechanism. We identified four MEN1 germline variants and two novel somatic variants. Early recognition of the phenotype coupled with variant screening of the MEN1 gene is the key to diagnosing and treating MEN1 effectively at an early stage.
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Affiliation(s)
- Wen-Mu Hu
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qin Zhang
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Li-Hua Huang
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhao-Hui Mo
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiao-Dan Long
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - You-Bo Yang
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wen-Jun Yang
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jun Liu
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ping Jin
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
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4
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Kövesdi A, Tóth M, Butz H, Szücs N, Sármán B, Pusztai P, Tőke J, Reismann P, Fáklya M, Tóth G, Somogyi A, Borka K, Erdei A, Nagy EV, Deák V, Valkusz Z, Igaz P, Patócs A, Grolmusz VK. True MEN1 or phenocopy? Evidence for geno-phenotypic correlations in MEN1 syndrome. Endocrine 2019; 65:451-459. [PMID: 31044390 PMCID: PMC6656790 DOI: 10.1007/s12020-019-01932-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/09/2019] [Indexed: 12/19/2022]
Abstract
PURPOSE Multiple endocrine neoplasia type 1 is a rare tumor syndrome caused by germline mutations of MEN1 gene. Phenotype varies widely, and no definitive correlation with the genotype has been observed. Mutation-negative patients with MEN1-associated tumors represent phenocopies. By comparing mutation-positive and mutation-negative patients, we aimed to identify phenotype features predictive for a positive genetic test and to evaluate the role of MEN1 mutations in phenotype modulation. METHODS Mutation screeening of MEN1 gene by Sanger sequencing and assessment of clinical data of 189 consecutively enrolled probands and relatives were performed at our national and European Reference Center. Multiple ligation probe amplification analysis of MEN1 gene and Sanger sequencing of CDKN1B were carried out in clinically suspicious but MEN1-negative cases. RESULTS Twenty-seven probands and twenty family members carried MEN1 mutations. Five mutations have not been described earlier. Pronouncedly high number of phenocopies (>70%) was observed. Clinical suspicion of MEN1 syndrome emerged at significantly earlier age in MEN1-positive compared to MEN1-negative probands. Gastroenteropancreatic neuroendocrine tumors developed significantly earlier and more frequently in carriers compared to non-carriers. Probands with high-impact (frameshift, nonsense, large deletions) mutations, predicted to affect menin function significantly, developed GEP-NETs more frequently compared to low-impact (inframe and missense) mutation carriers. CONCLUSIONS MEN1 phenocopy is common and represents a significant confounder for the genetic testing. GEP-NET under 30 years best predicted a MEN1 mutation. The present study thus confirmed a previous proposal and suggested that GEP-NET under 30 years should be considered as a part of the indication criteria for MEN1 mutational analysis.
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Affiliation(s)
- Annamária Kövesdi
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
- "Lendület" Hereditary Endocrine Tumors Research Group, Hungarian Academy of Sciences - Semmelweis University, Budapest, Hungary
| | - Miklós Tóth
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Henriett Butz
- "Lendület" Hereditary Endocrine Tumors Research Group, Hungarian Academy of Sciences - Semmelweis University, Budapest, Hungary
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
| | - Nikolette Szücs
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Beatrix Sármán
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Pusztai
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Judit Tőke
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Reismann
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | | | - Géza Tóth
- Markhot Ferenc Hospital, Eger, Hungary
| | - Anikó Somogyi
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Katalin Borka
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Annamária Erdei
- Division of Endocrinology, Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Endre V Nagy
- Division of Endocrinology, Department of Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | | | | | - Péter Igaz
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
- MTA-SE Molecular Medicine Research Group, Hungarian Academy of Sciences - Semmelweis University, Budapest, Hungary
| | - Attila Patócs
- "Lendület" Hereditary Endocrine Tumors Research Group, Hungarian Academy of Sciences - Semmelweis University, Budapest, Hungary.
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary.
| | - Vince Kornél Grolmusz
- 2nd Department of Medicine, Semmelweis University, Budapest, Hungary
- "Lendület" Hereditary Endocrine Tumors Research Group, Hungarian Academy of Sciences - Semmelweis University, Budapest, Hungary
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5
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Marini F, Giusti F, Fossi C, Cioppi F, Cianferotti L, Masi L, Boaretto F, Zovato S, Cetani F, Colao A, Davì MV, Faggiano A, Fanciulli G, Ferolla P, Ferone D, Loli P, Mantero F, Marcocci C, Opocher G, Beck-Peccoz P, Persani L, Scillitani A, Guizzardi F, Spada A, Tomassetti P, Tonelli F, Brandi ML. Multiple endocrine neoplasia type 1: analysis of germline MEN1 mutations in the Italian multicenter MEN1 patient database. Endocrine 2018; 62:215-233. [PMID: 29497973 DOI: 10.1007/s12020-018-1566-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/08/2018] [Indexed: 12/20/2022]
Abstract
PURPOSE Multiple endocrine neoplasia type 1 (MEN1) is caused by germline inactivating mutations of the MEN1 gene. Currently, no direct genotype-phenotype correlation is identified. We aim to analyze MEN1 mutation site and features, and possible correlations between the mutation type and/or the affected menin functional domain and clinical presentation in patients from the Italian multicenter MEN1 database, one of the largest worldwide MEN1 mutation series published to date. METHODS The study included the analysis of MEN1 mutation profile in 410 MEN1 patients [370 familial cases from 123 different pedigrees (48 still asymptomatic at the time of this study) and 40 single cases]. RESULTS We identified 99 different mutations: 41 frameshift [small intra-exon deletions (28) or insertions (13)], 13 nonsense, 26 missense and 11 splicing site mutations, 4 in-frame small deletions, and 4 intragenic large deletions spanning more than one exon. One family had two different inactivating MEN1 mutations on the same allele. Gastro-entero-pancreatic tumors resulted more frequent in patients with a nonsense mutation, and thoracic neuroendocrine tumors in individuals bearing a splicing-site mutation. CONCLUSIONS Our data regarding mutation type frequency and distribution are in accordance with previously published data: MEN1 mutations are scattered through the entire coding region, and truncating mutations are the most common in MEN1 syndrome. A specific direct correlation between MEN1 genotype and clinical phenotype was not found in all our families, and wide intra-familial clinical variability and variable disease penetrance were both confirmed, suggesting a role for modifying, still undetermined, factors, explaining the variable MEN1 tumorigenesis.
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Affiliation(s)
- Francesca Marini
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Francesca Giusti
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Caterina Fossi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Federica Cioppi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Luisella Cianferotti
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Laura Masi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Francesca Boaretto
- Familial Cancer Clinic, Veneto Institute of Oncology IRCCS, Padua, Italy
| | - Stefania Zovato
- Familial Cancer Clinic, Veneto Institute of Oncology IRCCS, Padua, Italy
| | - Filomena Cetani
- Department of Clinical and Experimental Medicine, Section of Endocrinology, University of Pisa, Pisa, Italy
| | - Annamaria Colao
- Endocrinology Unit, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Maria Vittoria Davì
- Internal Medicine, Section of Endocrinology, Department of Medicine, University of Verona, Verona, Italy
| | - Antongiulio Faggiano
- Endocrinology Unit, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Giuseppe Fanciulli
- NET Unit, Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - Piero Ferolla
- Multidisciplinar NET Center, Umbria Regional Cancer Network, Azienda Ospedaliera di Perugia and University of Perugia, Perugia, Italy
| | - Diego Ferone
- Endocrinology Unit, Department of Internal Medicine and Medical Specialties (DiMI), Policlinico San Martino, University of Genoa, Genoa, Italy
| | - Paola Loli
- Department of Endocrinology, Hospital Niguarda Ca' Granda, Milan, Italy
| | - Franco Mantero
- Division of Endocrinology, Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Claudio Marcocci
- Department of Clinical and Experimental Medicine, Section of Endocrinology, University of Pisa, Pisa, Italy
| | - Giuseppe Opocher
- Familial Cancer Clinic, Veneto Institute of Oncology IRCCS, Padua, Italy
| | | | - Luca Persani
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- Division of Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Alfredo Scillitani
- Unit of Endocrinology 'Casa Sollievo della Sofferenza' Hospital, IRCCS, San Giovanni Rotondo, Foggia, Italy
| | - Fabiana Guizzardi
- Division of Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Anna Spada
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Paola Tomassetti
- Department of Medical and Surgical Sciences, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Francesco Tonelli
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Maria Luisa Brandi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy.
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6
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de Laat JM, van Leeuwaarde RS, Valk GD. The Importance of an Early and Accurate MEN1 Diagnosis. Front Endocrinol (Lausanne) 2018; 9:533. [PMID: 30254610 PMCID: PMC6141626 DOI: 10.3389/fendo.2018.00533] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 08/22/2018] [Indexed: 12/16/2022] Open
Abstract
Multiple Endocrine Neoplasia type 1 (MEN1) is a rare autosomal dominant inherited condition, causing significant morbidity, and a reduction of life expectancy. A timely and accurate diagnosis of MEN1 is paramount to improve disease outcomes. This enables early identification of tumor manifestations allowing timely treatment for reducing morbidity and improving survival. Current management of MEN1 poses two challenges regarding the MEN1 diagnosis: diagnostic delay and the issue of phenocopies. A delay in diagnosis can be caused by a delay in identifying the index case, and by a delay in identifying affected family members of an index case. At present, lag time between diagnosis of MEN1 in index cases and genetic testing of family members was estimated to be 3.5 years. A subsequent delay in diagnosing affected family members was demonstrated to cause potential harm. Non-index cases have been found to develop clinically relevant tumor manifestations during the lag times. Centralized care, monitoring of patients outcomes on a national level and thereby improving awareness of physicians treating MEN1 patients, will contribute to improved care. The second challenge relates to "phenocopies." Phenocopies refers to the 5-25% of clinically diagnosed patients with MEN1in whom no mutation can be found. Up to now, the clinical diagnosis of MEN1 is defined as the simultaneous presence of at least two of the three characteristic tumors (pituitary, parathyroids, or pancreatic islets). These clinically diagnosed patients undergo intensive follow up. Recent insights, however, challenge the validity of this clinical criterion. The most common mutation-negative MEN1 phenotype is the combination of primary hyperparathyroidism and a pituitary adenoma. This phenotype might also be caused by mutations in the CDKN1B gene, causing the recently described MEN4 syndrome. Moreover, primary hyperparathyroidism and pituitary adenoma are relatively common in the general population. Limiting follow-up in patients with a sporadic co-occurrence of pHPT and PIT could reduce exposure to radiation from imaging, healthcare costs and anxiety.
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7
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Pardi E, Borsari S, Saponaro F, Bogazzi F, Urbani C, Mariotti S, Pigliaru F, Satta C, Pani F, Materazzi G, Miccoli P, Grantaliano L, Marcocci C, Cetani F. Mutational and large deletion study of genes implicated in hereditary forms of primary hyperparathyroidism and correlation with clinical features. PLoS One 2017; 12:e0186485. [PMID: 29036195 PMCID: PMC5643132 DOI: 10.1371/journal.pone.0186485] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 10/01/2017] [Indexed: 12/24/2022] Open
Abstract
The aim of this study was to carry out genetic screening of the MEN1, CDKN1B and AIP genes, both by direct sequencing of the coding region and multiplex ligation-dependent probe amplification (MLPA) assay in the largest monocentric series of Italian patients with Multiple Endocrine Neoplasia type 1 syndrome (MEN1) and Familial Isolated Hyperparathyroidism (FIHP). The study also aimed to describe and compare the clinical features of MEN1 mutation-negative and mutation-positive patients during long-term follow-up and to correlate the specific types and locations of MEN1 gene mutations with onset and aggressiveness of the main MEN1 manifestations. A total of 69 index cases followed at the Endocrinology Unit in Pisa over a period of 19 years, including 54 MEN1 and 15 FIHP kindreds were enrolled. Seven index cases with MEN1 but MEN1 mutation-negative, followed at the University Hospital of Cagliari, were also investigated. FIHP were also tested for CDC73 and CaSR gene alterations. MEN1 germline mutations were identified in 90% of the index cases of familial MEN1 (F-MEN1) and in 23% of sporadic cases (S-MEN1). MEN1 and CDC73 mutations accounted for 13% and 7% of the FIHP cohort, respectively. A CDKN1B mutation was identified in one F-MEN1. Two AIP variants of unknown significance were detected in two MEN1-negative S-MEN1. A MEN1 positive test best predicted the onset of all three major MEN1-related manifestations or parathyroid and gastro-entero-pancreatic tumors during follow-up. A comparison between the clinical characteristics of F and S-MEN1 showed a higher prevalence of a single parathyroid disease and pituitary tumors in sporadic compared to familial MEN1 patients. No significant correlation was found between the type and location of MEN1 mutations and the clinical phenotype. Since all MEN1 mutation-positive sporadic patients had a phenotype resembling that of familial MEN1 (multiglandular parathyroid hyperplasia, a prevalence of gastro-entero-pancreatic tumors and/or the classic triad) we might hypothesize that a subset of the sporadic MEN1 mutation-negative patients could represent an incidental coexistence of sporadic primary hyperparathyroidism and pituitary tumors or a MEN1 phenocopy, in our cohort, as in most cases described in the literature.
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Affiliation(s)
- Elena Pardi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Simona Borsari
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Federica Saponaro
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Fausto Bogazzi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Claudio Urbani
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Stefano Mariotti
- Endocrinology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Francesca Pigliaru
- Endocrinology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Chiara Satta
- Endocrinology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Fabiana Pani
- Endocrinology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Gabriele Materazzi
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Paolo Miccoli
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Lorena Grantaliano
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Department of Medical Sciences, Hospital Villa Albani, Anzio (RM), Italy
| | - Claudio Marcocci
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- University Hospital of Pisa, Endocrine Unit 2, Pisa, Italy
| | - Filomena Cetani
- University Hospital of Pisa, Endocrine Unit 2, Pisa, Italy
- * E-mail:
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van Leeuwaarde RS, de Laat JM, Pieterman CRC, Dreijerink K, Vriens MR, Valk GD. The future: medical advances in MEN1 therapeutic approaches and management strategies. Endocr Relat Cancer 2017; 24:T179-T193. [PMID: 28768698 DOI: 10.1530/erc-17-0225] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 08/01/2017] [Indexed: 12/21/2022]
Abstract
Multiple endocrine neoplasia type 1 is a rare autosomal inherited disorder associated with a high risk for patients to simultaneously develop tumors of the parathyroid glands, duodenopancreatic neuroendocrine tumors and tumors of the anterior pituitary gland. Early identification of MEN1 in patients enables presymptomatic screening of manifestations, which makes timely interventions possible with the intention to prevent morbidity and mortality. Causes of death nowadays have shifted toward local or metastatic progression of malignant neuroendocrine tumors. In early cohorts, complications like peptic ulcers in gastrinoma, renal failure in hyperparathyroidism, hypoglycemia and acute hypercalcemia were the primary causes of early mortality. Improved medical treatments of these complications led to a significantly improved life expectancy. The MEN1 landscape is still evolving, considering the finding of breast cancer as a new MEN1-related manifestation and ongoing publications on follow-up and medical care for patients with MEN1. This review aims at summarizing the most recent insights into the follow-up and medical care for patients with MEN1 and identifying the gaps for future research.
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Affiliation(s)
| | - Joanne M de Laat
- Department of Endocrine OncologyUniversity Medical Center Utrecht, Utrecht, The Netherlands
| | - Carolina R C Pieterman
- Department of Endocrine OncologyUniversity Medical Center Utrecht, Utrecht, The Netherlands
| | - Koen Dreijerink
- Department of Endocrine OncologyUniversity Medical Center Utrecht, Utrecht, The Netherlands
| | - Menno R Vriens
- Department of Endocrine SurgeryUniversity Medical Center Utrecht, Utrecht, The Netherlands
| | - Gerlof D Valk
- Department of Endocrine OncologyUniversity Medical Center Utrecht, Utrecht, The Netherlands
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9
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de Laat JM, van der Luijt RB, Pieterman CRC, Oostveen MP, Hermus AR, Dekkers OM, de Herder WW, van der Horst-Schrivers AN, Drent ML, Bisschop PH, Havekes B, Vriens MR, Valk GD. MEN1 redefined, a clinical comparison of mutation-positive and mutation-negative patients. BMC Med 2016; 14:182. [PMID: 27842554 PMCID: PMC5109674 DOI: 10.1186/s12916-016-0708-1] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 09/30/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Multiple Endocrine Neoplasia type 1 (MEN1) is diagnosed when two out of the three primary MEN1-associated endocrine tumors occur in a patient. Up to 10-30 % of those patients have no mutation in the MEN1 gene. It is unclear if the phenotype and course of the disease of mutation-negative patients is comparable with mutation-positive patients and if these patients have true MEN1. The present study aims to describe and compare the clinical course of MEN1 mutation-negative patients with two out of the three main MEN1 manifestations and mutation-positive patients during long-term follow-up. METHODS This is a cohort study performed using the Dutch MEN1 database, including > 90 % of the Dutch MEN1 population. RESULTS A total of 293 (90.7 %) mutation-positive and 30 (9.3 %) mutation-negative MEN1 patients were included. Median age of developing the first main MEN1 manifestation was higher in mutation-negative patients (46 vs. 33 years) (P = 0.007). Mutation-negative patients did not develop a third main MEN1 manifestation in the course of follow-up compared to 48.3 % of mutation-positive patients (P < 0.001). Median survival in mutation-positive patients was estimated at 73.0 years (95 % CI, 69.5-76.5) compared to 87.0 years (95 % CI not available) in mutation-negative patients (P = 0.001). CONCLUSIONS Mutation-positive and mutation-negative MEN1 patients have a different phenotype and clinical course. Mutation-negative patients develop MEN1 manifestations at higher age and have a life expectancy comparable with the general population. The apparent differences in clinical course suggest that MEN1 mutation-negative patients do not have true MEN1, but another MEN1-like syndrome or sporadic co-incidence of two neuro-endocrine tumors.
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Affiliation(s)
- Joanne M de Laat
- Department of Endocrine Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Rob B van der Luijt
- Department of Medical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Carolina R C Pieterman
- Department of Endocrine Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Maria P Oostveen
- Department of Endocrine Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ad R Hermus
- Department of Endocrinology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Olaf M Dekkers
- Departments of Endocrinology and Metabolism & Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Wouter W de Herder
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Madeleine L Drent
- Department of Internal Medicine, VU University Medical Center, Amsterdam, The Netherlands
| | - Peter H Bisschop
- Department of Endocrinology and Metabolism, Academic Medical Center, Amsterdam, The Netherlands
| | - Bas Havekes
- Department of Internal Medicine, Division of Endocrinology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Menno R Vriens
- Department of Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Gerlof D Valk
- Department of Endocrine Oncology, University Medical Center Utrecht, Utrecht, The Netherlands.
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