PMID- 35521758 OWN - NLM STAT- MEDLINE DCOM- 20220523 LR - 20220524 IS - 1479-683X (Electronic) IS - 0804-4643 (Linking) VI - 187 IP - 1 DP - 2022 May 19 TI - Convergence between germline and somatic mutations in pancreatic neuroendocrine tumors. PG - 85-90 LID - 10.1530/EJE-21-0893 [doi] AB - OBJECTIVES: The pancreatic neuroendocrine tumors (PanNETs) are a group of clinically heterogeneous neoplasms. Although previous studies illustrated the somatic mutation pattern for PanNETs, the germline mutation pattern is still unclear. Here, we comprehensively screened the underlying germline mutations in a cohort of multiple endocrine neoplasia type 1 (MEN1)-related and sporadic PanNETs to reveal the characteristics of germline mutation in PanNET patients. METHODS: Patients diagnosed with PanNETs by biopsy or surgical pathology were enrolled in this study. Peripheral blood samples were used for genomic DNA purification and subsequent sequencing. The following sequencing techniques were used and compared for validation: (1) targeted gene capture with a customized panel; (2) whole exome sequencing data from previous study. RESULTS: A total of 184 PanNET patients were enrolled, including 20 MEN1-related and 164 sporadic cases. In this study, MEN1 mutation rate in MEN1-related PanNETs was 60% (12/20), of which 50% were novel mutation sites. For sporadic PanNETs, the overall germline mutation rate was very low. Besides the rare MEN1 mutation, previously unreported germline variant in DAXX was found in one non-functional PanNET. CONCLUSIONS: This study revealed distinctive germline mutation rates between MEN1-related and sporadic PanNETs. The novel MEN1 mutations contribute to revealing the spectrum of MEN1 mutations in PanNETs. The newly discovered germline variant of DAXX in sporadic PanNET implies a tendency of convergence between germline and somatic mutation genes. FAU - Ling, Chao AU - Ling C AUID- ORCID: 0000-0001-5328-4906 AD - The Laboratory of Clinical Genetics, Medical Research Center. AD - State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Hong, Xiafei AU - Hong X AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Xu, Mengyue AU - Xu M AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Wang, Yutong AU - Wang Y AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Ma, Xiaosen AU - Ma X AD - Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Cui, Yunying AU - Cui Y AD - Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Jiang, Rui AU - Jiang R AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Cao, Dingyan AU - Cao D AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Wu, Huanwen AU - Wu H AD - Department of Pathology, Peking Union Medical College Hospital, and Molecular Pathology Research Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China. FAU - Tong, Anli AU - Tong A AUID- ORCID: 0000-0002-5432-5818 AD - Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Zhao, Yupei AU - Zhao Y AUID- ORCID: 0000-0001-7081-2299 AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. AD - State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. FAU - Wu, Wenming AU - Wu W AUID- ORCID: 0000-0003-0691-8333 AD - Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. AD - State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China. LA - eng PT - Journal Article DEP - 20220519 PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 SB - IM MH - Germ-Line Mutation/genetics MH - Humans MH - *Multiple Endocrine Neoplasia Type 1/genetics MH - Mutation/genetics MH - *Neuroendocrine Tumors/diagnosis/genetics MH - *Pancreatic Neoplasms/genetics/pathology EDAT- 2022/05/07 06:00 MHDA- 2022/05/24 06:00 CRDT- 2022/05/06 06:42 PHST- 2021/08/27 00:00 [received] PHST- 2022/04/25 00:00 [accepted] PHST- 2022/05/07 06:00 [pubmed] PHST- 2022/05/24 06:00 [medline] PHST- 2022/05/06 06:42 [entrez] AID - 10.1530/EJE-21-0893 [doi] PST - epublish SO - Eur J Endocrinol. 2022 May 19;187(1):85-90. doi: 10.1530/EJE-21-0893.