PMID- 28969599 OWN - NLM STAT- MEDLINE DCOM- 20171013 LR - 20181113 IS - 1471-2350 (Electronic) IS - 1471-2350 (Linking) VI - 18 IP - 1 DP - 2017 Oct 2 TI - Genetic analysis of parathyroid and pancreatic tumors in a patient with multiple endocrine neoplasia type 1 using whole-exome sequencing. PG - 106 LID - 10.1186/s12881-017-0465-9 [doi] LID - 106 AB - BACKGROUND: Multiple endocrine neoplasia type 1 (MEN1) syndrome is an autosomal dominant hereditary disorder characterized by the presence of endocrine tumors affecting the parathyroid, pancreas, and pituitary. A heterozygous germline inactivating mutation in the MEN1 gene (first hit) may be followed by somatic loss of the remaining normal copy or somatic mutations in the MEN1 gene (second hit). Whole-exome sequencing has been successfully used to elucidate the mutations associated with the different types of tumors. CASE PRESENTATION: We performed whole-exome sequencing (WES) on three parathyroid tumors, one pancreatic insulinoma, and a blood sample taken from the same patient with MEN1 to study tumor heterogeneity in MEN1 originating from different tumors. We identified a novel frame-shift deletion (c.1382_1383delAG, p.E461GfsX69) in the MEN1 gene using WES, which was confirmed by Sanger sequencing. WES and the SNP array revealed somatic LOH on chromosome 11 in parathyroid tumors (left upper, left lower, and right upper parathyroid). However, we did not detect a somatic MEN1 gene mutation or LOH in the pancreatic insulinoma. WES revealed two somatic functional variants outside the MEN1 gene in the pancreatic insulinoma. CONCLUSIONS: This study revealed heterogeneity among tumors in the same patient with MEN1, suggesting that different tumor-specific tumorigenic mechanisms may contribute to the pathogenesis of MEN1 tumors. The present study supports the clinical applicability of the WES strategy to research on multiple tumor samples and blood. FAU - Kim, Bo-Young AU - Kim BY AD - Division of Intractable Diseases, Center for Biomedical Sciences, Korea National Institute of Health, 187 Osongsaengmyeing2-ro, Cheongju-si, Chungcheongbuk-do, 28159, South Korea. FAU - Park, Mi-Hyun AU - Park MH AD - Division of Intractable Diseases, Center for Biomedical Sciences, Korea National Institute of Health, 187 Osongsaengmyeing2-ro, Cheongju-si, Chungcheongbuk-do, 28159, South Korea. FAU - Woo, Hae-Mi AU - Woo HM AD - Division of Intractable Diseases, Center for Biomedical Sciences, Korea National Institute of Health, 187 Osongsaengmyeing2-ro, Cheongju-si, Chungcheongbuk-do, 28159, South Korea. FAU - Jo, Hye-Yeong AU - Jo HY AD - Division of Intractable Diseases, Center for Biomedical Sciences, Korea National Institute of Health, 187 Osongsaengmyeing2-ro, Cheongju-si, Chungcheongbuk-do, 28159, South Korea. FAU - Kim, Ji Hoon AU - Kim JH AD - Department of Surgery, Eulji University Hospital, Daejeon, South Korea. FAU - Choi, Hyung Jin AU - Choi HJ AD - Department of Anatomy, Department of Biomedical Science, Neuroscience Research Institute, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul, South Korea. hjchoi@snu.ac.kr. FAU - Koo, Soo Kyung AU - Koo SK AUID- ORCID: 0000-0002-2133-3088 AD - Division of Intractable Diseases, Center for Biomedical Sciences, Korea National Institute of Health, 187 Osongsaengmyeing2-ro, Cheongju-si, Chungcheongbuk-do, 28159, South Korea. skkoo@nih.go.kr. LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20171002 PL - England TA - BMC Med Genet JT - BMC medical genetics JID - 100968552 RN - 0 (MEN1 protein, human) RN - 0 (Proto-Oncogene Proteins) SB - IM MH - Adult MH - Exome/genetics MH - Genetic Testing/*methods MH - Germ-Line Mutation MH - High-Throughput Nucleotide Sequencing/*methods MH - Humans MH - Insulinoma/*genetics MH - Male MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Pancreatic Neoplasms/complications/*genetics MH - Parathyroid Neoplasms/complications/*genetics MH - Pedigree MH - Proto-Oncogene Proteins/genetics PMC - PMC5625714 OTO - NOTNLM OT - Case report OT - Clinical genomics OT - Genetic analysis OT - Multiple endocrine neoplasia type 1 OT - Somatic mutation OT - Whole-exome sequencing COIS- ETHICS APPROVAL AND CONSENT TO PARTICIPATE: The Institutional Review Board of Chungbuk National University Hospital and Korea National Institutes of Health (NIH) approved this study. All of participants were informed to participate in this study with written consents. CONSENT FOR PUBLICATION: Written informed consent were obtained from the patient for the publication of their clinical details and images. COMPETING INTERESTS: The authors declare that they have no competing interests. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2017/10/04 06:00 MHDA- 2017/10/14 06:00 PMCR- 2017/10/02 CRDT- 2017/10/04 06:00 PHST- 2016/12/28 00:00 [received] PHST- 2017/09/11 00:00 [accepted] PHST- 2017/10/04 06:00 [entrez] PHST- 2017/10/04 06:00 [pubmed] PHST- 2017/10/14 06:00 [medline] PHST- 2017/10/02 00:00 [pmc-release] AID - 10.1186/s12881-017-0465-9 [pii] AID - 465 [pii] AID - 10.1186/s12881-017-0465-9 [doi] PST - epublish SO - BMC Med Genet. 2017 Oct 2;18(1):106. doi: 10.1186/s12881-017-0465-9.