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Liu F, Li Y, Ying D, Qiu S, He Y, Li M, Liu Y, Zhang Y, Zhu Q, Hu Y, Liu L, Li G, Pan W, Jin W, Mu J, Cao Y, Liu Y. Whole-exome mutational landscape of neuroendocrine carcinomas of the gallbladder. Signal Transduct Target Ther 2021; 6:55. [PMID: 33563892 PMCID: PMC7873252 DOI: 10.1038/s41392-020-00412-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 10/14/2020] [Accepted: 10/28/2020] [Indexed: 12/23/2022] Open
Abstract
Neuroendocrine carcinoma (NEC) of the gallbladder (GB-NEC) is a rare but extremely malignant subtype of gallbladder cancer (GBC). The genetic and molecular signatures of GB-NEC are poorly understood; thus, molecular targeting is currently unavailable. In the present study, we applied whole-exome sequencing (WES) technology to detect gene mutations and predicted somatic single-nucleotide variants (SNVs) in 15 cases of GB-NEC and 22 cases of general GBC. In 15 GB-NECs, the C > T mutation was predominant among the 6 types of SNVs. TP53 showed the highest mutation frequency (73%, 11/15). Compared with neuroendocrine carcinomas of other organs, significantly mutated genes (SMGs) in GB-NECs were more similar to those in pulmonary large-cell neuroendocrine carcinomas (LCNECs), with driver roles for TP53 and RB1. In the COSMIC database of cancer-related genes, 211 genes were mutated. Strikingly, RB1 (4/15, 27%) and NAB2 (3/15, 20%) mutations were found specifically in GB-NECs; in contrast, mutations in 29 genes, including ERBB2 and ERBB3, were identified exclusively in GBC. Mutations in RB1 and NAB2 were significantly related to downregulation of the RB1 and NAB2 proteins, respectively, according to immunohistochemical (IHC) data (p values = 0.0453 and 0.0303). Clinically actionable genes indicated 23 mutated genes, including ALK, BRCA1, and BRCA2. In addition, potential somatic SNVs predicted by ISOWN and SomVarIUS constituted 6 primary COSMIC mutation signatures (1, 3, 30, 6, 7, and 13) in GB-NEC. Genes carrying somatic SNVs were enriched mainly in oncogenic signaling pathways involving the Notch, WNT, Hippo, and RTK-RAS pathways. In summary, we have systematically identified the mutation landscape of GB-NEC, and these findings may provide mechanistic insights into the specific pathogenesis of this deadly disease.
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Affiliation(s)
- Fatao Liu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
| | - Yongsheng Li
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dongjian Ying
- Department of Minimal Invasive Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, 315040, China
| | - Shimei Qiu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
| | - Yong He
- Department of hepatopancreatobiliary surgery, Ganzhou hospital affiliated to Nanchang university, Jiangxi, 341000, China
| | - Maolan Li
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
| | - Yun Liu
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yijian Zhang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
| | - Qin Zhu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
| | - Yunping Hu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
| | - Liguo Liu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guoqiang Li
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China
- Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weihua Pan
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
- Information and Big Data Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
| | - Wei Jin
- Information and Big Data Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China
| | - Jiasheng Mu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China.
- Information and Big Data Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Yangpu District, Shanghai, 200092, China.
| | - Yang Cao
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China.
- Department of Gastric Surgery, Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China.
| | - Yingbin Liu
- Shanghai Key Laboratory of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China.
- State Key Laboratory of Oncogenes and Related Genes, Shanghai, China.
- Shanghai Research Center of Biliary Tract Disease, Yangpu District, Shanghai, 200092, China.
- Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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