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Li J, Zhang X, Deng Y, Wu X, Zheng Z, Zhou Y, Cai S, Zhang Y, Zhang J, Tao K, Cui Y, Cao H, Shen K, Yu J, Zhou Y, Ren W, Qu C, Zhao W, Hu J, Wang W, Yang J, Shen L. Efficacy and Safety of Avapritinib in Treating Unresectable or Metastatic Gastrointestinal Stromal Tumors: A Phase I/II, Open-Label, Multicenter Study. Oncologist 2022; 28:187-e114. [PMID: 36477870 PMCID: PMC9907038 DOI: 10.1093/oncolo/oyac242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 10/14/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Avapritinib is a type 1 kinase inhibitor designed to potently and selectively inhibit oncogenic KIT/PDGFRA mutants by targeting the kinase active conformation. This multicenter, single-arm, open-label, phase I/II bridging study of NAVIGATOR in Chinese patients evaluated the safety and the antineoplastic activity of avapritinib in Chinese patients with unresectable/metastatic gastrointestinal stromal tumors (GIST). METHODS Phase I comprised dose escalation for safety and phase II dose determination. Phase II comprised dose expansion for safety/efficacy evaluations in patients with PDGFRA D842V mutations or patients having received at least 3 lines of therapy without PDGFRA D842V mutations. The primary endpoints were recommended phase II dose, safety, and Independent Radiology Review Committee (IRRC)-assessed objective response rate (ORR). RESULTS No dose-limiting toxicities occurred (n = 10); the recommended phase II dose was avapritinib 300 mg once daily orally. Fifty-nine patients initially received avapritinib 300 mg. Common grade ≥3 treatment-related adverse events were anemia, decreased white blood cell count, increased blood bilirubin levels, and decreased neutrophil count. In patients with PDGFRA D842V mutations, IRRC- and investigator-assessed ORRs were 75% and 79%, respectively; clinical benefit rates were both 86%. Median duration of response/progression-free survival were not reached. IRCC- and investigator-assessed ORRs in patients in the fourth- or later-line setting were 22% and 35%, respectively. Median progression-free survivals were 5.6 months for both. Overall survival data were immature and not calculated. CONCLUSION Avapritinib was generally well tolerated and showed marked anti-tumor activity in Chinese patients with GIST bearing PDGFRA D842V mutations and notable efficacy as fourth- or later-line monotherapy (ClinicalTrials.gov Identifier: NCT04254939).
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Affiliation(s)
| | | | | | | | | | | | - Shirong Cai
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yanqiao Zhang
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Jun Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
| | - Kaixiong Tao
- Department of Gastroenterology, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Yuehong Cui
- Department of Medical Oncology, Fudan University Zhongshan Hospital, Shanghai, People’s Republic of China
| | - Hui Cao
- Department of Gastroenterology, Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Kuntang Shen
- Department of General Surgery, Fudan University Zhongshan Hospital, Shanghai, People’s Republic of China
| | - Jiren Yu
- Department of Gastroenterology, The First Affiliated Hospital, Zhejiang University, Hangzhou, People’s Republic of China
| | - Ye Zhou
- Department of Gastric Surgery, Fudan University Shanghai Cancer Center, Shanghai, People’s Republic of China
| | - Wenxiao Ren
- CStone Pharmaceuticals (Suzhou), Suzhou, People’s Republic of China
| | - Chenglin Qu
- CStone Pharmaceuticals (Suzhou), Suzhou, People’s Republic of China
| | - Wanqi Zhao
- CStone Pharmaceuticals (Suzhou), Suzhou, People’s Republic of China
| | - Jin Hu
- CStone Pharmaceuticals (Suzhou), Suzhou, People’s Republic of China
| | - Wei Wang
- CStone Pharmaceuticals (Suzhou), Suzhou, People’s Republic of China
| | - Jason Yang
- CStone Pharmaceuticals (Suzhou), Suzhou, People’s Republic of China
| | - Lin Shen
- Corresponding author: Lin Shen, MD, PhD, Department of Gastrointestinal Oncology, Laboratory of Carcinogenesis and Translational Research of the Ministry of Education, Peking University School of Oncology, Beijing Cancer Hospital & Institute, 52 Fucheng Road, Haidian District, Beijing 100142, People’s Republic of China. E-mail:
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Qian H, Yan N, Hu X, Jiang J, Cao Z, Shen D. Molecular Portrait of GISTs Associated With Clinicopathological Features: A Retrospective Study With Molecular Analysis by a Custom 9-Gene Targeted Next-Generation Sequencing Panel. Front Genet 2022; 13:864499. [PMID: 35547262 PMCID: PMC9081536 DOI: 10.3389/fgene.2022.864499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/03/2022] [Indexed: 01/04/2023] Open
Abstract
Objectives: The study aims to investigate genetic characterization of molecular targets and clinicopathological features with gastrointestinal stromal tumors based on targeted next-generation sequencing. Materials and Methods: We selected 106 patients with GISTs from Sir Run Run Shaw Hospital between July 2019 and March 2021. FFPE samples and paired blood samples were obtained from these patients who underwent excision of the tumor. A customized targeted-NGS panel of nine GIST-associated genes was designed to detect variants in the coding regions and the splicing sites of these genes. Results: In total, 106 patients with a GIST were included in the study which presented with various molecular driver alterations in this study. KIT mutations occurred most often in GISTs (94/106, 95.92%), followed by point mutations in PDGFRA. KIT or PDGFRA mutations were detected to be mutually exclusive in the GIST. A total of eight patients with wide-type KIT/PDGFRA were characterized as WT-GISTs, according to clinical diagnosis which included six quadruple-WT GISTs, 1 BRAF-mutant, and 1 NF1-mutant GIST. In KIT exon 11, the most common mutation type was the codon Mutation (in-frame deletion or indels), whereas the missense mutation was the dominant type in KIT exon 13 and KIT exon 17. All variations in KIT exon 11 observed in this study were concentrated at a certain position of codon 550 to codon 576. Mutation in KIT exon 9 was mostly located at codon 502–503. Two germline pathogenic mutations were detected: NF1-R681* and KRAS-T58I. NF1-L591P was a germline mutation to be identified for the first time and is not recorded in the database. The frequency of driving mutations differed between the primary anatomical site in the GIST (p = 0.0206). KIT exon 11 mutants had a lower proliferation index of Ki67 (68.66%,≤5%), while 50.00% of KIT exon 9 mutants had the Ki67 status greater than 10%. Conclusion: The occurrence and development of a GIST is driven by different molecular variations. Resistance to TKIs arises mainly with resistance mutations in KIT or PDGFRA when they are the primary drivers. Targeted NGS can simultaneously and efficiently detect nine GIST-related gene mutations and provide reference for clinicians’ individualized diagnosis and treatment. Our results have important implications for clinical management.
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Affiliation(s)
- Haoran Qian
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Na Yan
- Dian Diagnostics Group Co., Ltd., Hangzhou, China.,Key Laboratory of Clinical in Vitro Diagnostic Techniques of Zhejiang Province, Hangzhou, China
| | - Xiaotong Hu
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Junchang Jiang
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhengzheng Cao
- Dian Diagnostics Group Co., Ltd., Hangzhou, China.,Key Laboratory of Clinical in Vitro Diagnostic Techniques of Zhejiang Province, Hangzhou, China
| | - Dan Shen
- Dian Diagnostics Group Co., Ltd., Hangzhou, China.,Key Laboratory of Clinical in Vitro Diagnostic Techniques of Zhejiang Province, Hangzhou, China
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Liu J, Gao J, Wang A, Jiang Z, Qi S, Qi Z, Liu F, Yu K, Cao J, Chen C, Hu C, Wu H, Wang L, Wang W, Liu Q, Liu J. Nintedanib overcomes drug resistance from upregulation of FGFR signaling and imatinib-induced KIT mutations in gastrointestinal stromal tumors. Mol Oncol 2022; 16:1761-1774. [PMID: 35194937 PMCID: PMC9019892 DOI: 10.1002/1878-0261.13199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 12/01/2021] [Accepted: 02/21/2022] [Indexed: 11/25/2022] Open
Abstract
Drug resistance remains a major challenge in the clinical treatment of gastrointestinal stromal tumours (GISTs). While acquired on‐target mutations of mast/stem cell growth factor receptor (KIT) kinase is the major resistance mechanism, activation of alternative signalling pathways may also play a role. Although several second‐ and third‐generation KIT kinase inhibitors have been developed that could overcome some of the KIT mutations conferring resistance, the low clinical responses and narrow safety window have limited their broad application. The present study revealed that nintedanib not only overcame resistance induced by a panel of KIT primary and secondary mutations, but also overcame ERK‐reactivation‐mediated resistance caused by the upregulation of fibroblast growth factor (FGF) activity. In preclinical models of GISTs, nintedanib significantly inhibited the proliferation of imatinib‐resistant cells, including GIST‐5R, GIST‐T1/T670I and GIST patient‐derived primary cells. In addition, it also exhibited dose‐dependent inhibition of ERK phosphorylation upon FGF ligand stimulation. In vivo antitumour activity was also observed in several xenograft GIST models. Considering the well‐documented safety and pharmacokinetic profiles of nintedanib, this finding provides evidence for the repurposing of nintedanib as a new therapy for the treatment of GIST patients with de novo or acquired resistance to imatinib.
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Affiliation(s)
- Juan Liu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230036, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Jingjing Gao
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230036, P. R. China
| | - Aoli Wang
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Zongru Jiang
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Shuang Qi
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Ziping Qi
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Feiyang Liu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Kailin Yu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Jiangyan Cao
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230036, P. R. China
| | - Cheng Chen
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Chen Hu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Hong Wu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Li Wang
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Wenchao Wang
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
| | - Qingsong Liu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230036, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Precision Medicine Research Laboratory of Anhui Province, Hefei, Anhui, 230088, P. R. China
| | - Jing Liu
- Anhui Province Key Laboratory of Medical Physics and Technology; CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China.,Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, Anhui, 230031, P. R. China
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