PMID- 37086484 OWN - NLM STAT- MEDLINE DCOM- 20230911 LR - 20231010 IS - 1549-490X (Electronic) IS - 1083-7159 (Print) IS - 1083-7159 (Linking) VI - 28 IP - 9 DP - 2023 Sep 7 TI - The Mutational, Prognostic, and Therapeutic Landscape of Neuroendocrine Neoplasms. PG - e723-e736 LID - 10.1093/oncolo/oyad093 [doi] AB - BACKGROUND: Neuroendocrine neoplasms (NENs) represent clinically and genetically heterogeneous malignancies, thus a comprehensive understanding of underlying molecular characteristics, prognostic signatures, and potential therapeutic targets is urgently needed. METHODS: Next-generation sequencing (NGS) and immunohistochemistry were applied to acquire genomic and immune profiles of NENs from 47 patients. RESULTS: Difference was distinguished based on differentiation grade and primary localization. Poorly differentiated neuroendocrine carcinomas (NECs) and well-differentiated neuroendocrine tumors (NETs) harbored distinct molecular features; we observed that tumor mutational burden (TMB) and tumor neoantigen burden (TNB) were significantly higher in NECs versus NETs. Notably, we identified a 7-gene panel (MLH3, NACA, NOTCH1, NPAP1, RANBP17, TSC2, and ZFHX4) as a novel prognostic signature in NENs; patients who carried mutations in any of the 7 genes exhibited significantly poorer survival. Furthermore, loss of heterozygosity (LOH) and germline homogeneity in human leukocyte antigen (HLA) are common in NENs, accounting for 39% and 36%, respectively. Notably, HLA LOH was an important prognostic biomarker for a subgroup of NEN patients. Finally, we analyzed clinically actionable targets in NENs, revealing that TMB high (TMB-H) or gene mutations in TP53, KRAS, and HRAS were the most frequently observed therapeutic indicators, which granted eligibility to immune checkpoint blockade (ICB) and targeted therapy. CONCLUSION: Our study revealed heterogeneity of NENs, and identified novel prognostic signatures and potential therapeutic targets, which directing improvements of clinical management for NEN patients in the foreseeable future. CI - (c) The Author(s) 2023. Published by Oxford University Press. FAU - Liu, Man AU - Liu M AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Li, Na AU - Li N AD - Department of Translational Medicine, YuceBio Technology Co., Ltd, Shenzhen, People's Republic of China. FAU - Tang, Hongzhen AU - Tang H AD - Department of Medicine, YuceBio Technology Co., Ltd, Shenzhen, People's Republic of China. FAU - Chen, Luohai AU - Chen L AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Liu, Xuemei AU - Liu X AD - Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, People's Republic of China. FAU - Wang, Yu AU - Wang Y AD - Department of Interventional Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Lin, Yuan AU - Lin Y AD - Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Luo, Yanji AU - Luo Y AD - Department of Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Wei, Shaozhen AU - Wei S AD - Department of Translational Medicine, YuceBio Technology Co., Ltd, Shenzhen, People's Republic of China. FAU - Wen, Wenli AU - Wen W AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Chen, Minhu AU - Chen M AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Wang, Jiaqian AU - Wang J AD - Department of Translational Medicine, YuceBio Technology Co., Ltd, Shenzhen, People's Republic of China. FAU - Zhang, Ning AU - Zhang N AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. FAU - Chen, Jie AU - Chen J AD - Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. AD - Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Oncologist JT - The oncologist JID - 9607837 RN - 0 (Biomarkers, Tumor) SB - IM MH - Humans MH - Prognosis MH - *Neuroendocrine Tumors/therapy/drug therapy MH - *Carcinoma, Neuroendocrine/genetics/therapy/pathology MH - Biomarkers, Tumor/genetics MH - Mutation MH - *Pancreatic Neoplasms/pathology PMC - PMC10485279 OTO - NOTNLM OT - genomic profile OT - heterogeneity OT - immune signature OT - neuroendocrine neoplasms OT - prognostic signature OT - therapeutic target COIS- The authors indicated no financial relationships. EDAT- 2023/04/22 19:42 MHDA- 2023/09/11 06:43 PMCR- 2023/04/22 CRDT- 2023/04/22 17:22 PHST- 2022/11/04 00:00 [received] PHST- 2023/03/11 00:00 [accepted] PHST- 2023/09/11 06:43 [medline] PHST- 2023/04/22 19:42 [pubmed] PHST- 2023/04/22 17:22 [entrez] PHST- 2023/04/22 00:00 [pmc-release] AID - 7136679 [pii] AID - oyad093 [pii] AID - 10.1093/oncolo/oyad093 [doi] PST - ppublish SO - Oncologist. 2023 Sep 7;28(9):e723-e736. doi: 10.1093/oncolo/oyad093.