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Original Articles
- Lung and Thoracic cancer
- Comparison of Clinicopathogenomic Features and Treatment Outcomes of EGFR and HER2 Exon 20 Insertion Mutations in Non–Small Cell Lung Cancer: Single-Institution Experience
- So Heun Lee, Hyehyun Jeong, Deok Hoon Kim, Se Jin Jang, Sang-We Kim, Shinkyo Yoon, Dae Ho Lee
- Cancer Res Treat. 2024;56(3):774-784. Published online January 30, 2024
- DOI: https://doi.org/10.4143/crt.2023.1177
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Abstract
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ePub - Purpose
Exon 20 insertion mutations (E20ins) in epidermal growth factor receptor (EGFR) or human epidermal growth factor receptor 2 (HER2) in non–small cell lung cancer (NSCLC) patients has become more important with emergence of novel agents targeting E20ins.
Materials and Methods
Advanced/Metastatic NSCLC patients with E20ins were included. EGFR E20ins was identified by two methods, next-generation sequencing (NGS) or real-time polymerase chain reaction (PCR), while HER2 E20ins was done by NGS only.
Results
Between December 2013 and July 2021, E20ins were identified in 107 patients at Asan Medical Center; 67 EGFR E20ins and 40 HER2 E20ins. Out of 32 patients with EGFR E20ins who had tested both PCR and NGS, 17 were identified only through NGS and the other 15 through both tests, giving a discordance rate of 53.1%. There was no clinically significant difference in clinicopathologic features between EGFR and HER2 E20ins; both were observed more frequently in adenocarcinoma, female and never-smokers. Brain metastases were evident at diagnosis in 31.8% of EGFR E20ins and 27.5% of HER2 E20ins, respectively. Platinum-based doublets demonstrated objective response rates (ORR) of 13.3% with a median progression-free survival (PFS) of 4.2 months for EGFR E20ins and 35.3% with 4.7 months for HER2 E20ins, respectively. In contrast, novel EGFR E20ins-targeted agents exhibited an ORR of 46.2% with a median PFS of 5.4 months, while HER2-targeted agents showed an ORR of 50% with that of 7.0 months.
Conclusion
Identification of EGFR and HER2 E20ins is more important as their targeted therapies improved outcomes. Upfront NGS test as a comprehensive molecular approach is strongly warranted.
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- 186 Download
- Gastrointestinal cancer
- Survival Benefit of Adjuvant Chemotherapy in Patients with Pancreatic Ductal Adenocarcinoma Who Underwent Surgery Following Neoadjuvant FOLFIRINOX
- So Heun Lee, Dae Wook Hwang, Changhoon Yoo, Kyu-pyo Kim, Sora Kang, Jae Ho Jeong, Dongwook Oh, Tae Jun Song, Sang Soo Lee, Do Hyun Park, Dong Wan Seo, Jin-hong Park, Ki Byung Song, Jae Hoon Lee, Woohyung Lee, Yejong Park, Bong Jun Kwak, Heung-Moon Chang, Baek-Yeol Ryoo, Song Cheol Kim
- Cancer Res Treat. 2023;55(3):956-968. Published online February 27, 2023
- DOI: https://doi.org/10.4143/crt.2022.409
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Abstract
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Supplementary MaterialPubReaderePub - Purpose
The benefit of adjuvant chemotherapy following curative-intent surgery in pancreatic ductal adenocarcinoma (PDAC) patients who had received neoadjuvant FOLFIRINOX is unclear. This study aimed to assess the survival benefit of adjuvant chemotherapy in this patient population.
Materials and Methods
This retrospective study included 218 patients with localized non-metastatic PDAC who received neoadjuvant FOLFIRINOX and underwent curative-intent surgery (R0 or R1) between January 2017 and December 2020. The association of adjuvant chemotherapy with disease-free survival (DFS) and overall survival (OS) was evaluated in overall patients and in the propensity score matched (PSM) cohort. Subgroup analysis was conducted according to the pathology-proven lymph node status.
Results
Adjuvant chemotherapy was administered to 149 patients (68.3%). In the overall cohort, the adjuvant chemotherapy group had significantly improved DFS and OS compared to the observation group (DFS: median, 13.8 months [95% confidence interval (CI), 11.0 to 19.1] vs. 8.2 months [95% CI, 6.5 to 12.0]; p < 0.001; and OS: median, 38.0 months [95% CI, 32.2 to not assessable] vs. 25.7 months [95% CI, 18.3 to not assessable]; p=0.005). In the PSM cohort of 57 matched pairs of patients, DFS and OS were better in the adjuvant chemotherapy group than in the observation group (p < 0.001 and p=0.038, respectively). In the multivariate analysis, adjuvant chemotherapy was a significant favorable prognostic factor (vs. observation; DFS: hazard ratio [HR], 0.51 [95% CI, 0.36 to 0.71; p < 0.001]; OS: HR, 0.45 [95% CI, 0.29 to 0.71; p < 0.001]).
Conclusion
Among PDAC patients who underwent surgery following neoadjuvant FOLFIRINOX, adjuvant chemotherapy may be associated with improved survival. Randomized studies should be conducted to validate this finding. -
Citations
Citations to this article as recorded by
- The survival effect of neoadjuvant therapy and neoadjuvant plus adjuvant therapy on pancreatic ductal adenocarcinoma patients with different TNM stages: a propensity score matching analysis based on the SEER database
Hao Hu, Yang Xu, Qiang Zhang, Yuan Gao, Zhenyu Wu
Expert Review of Anticancer Therapy.2024; 24(6): 467. CrossRef - Neoadjuvant treatment of pancreatic ductal adenocarcinoma: Whom, when and how
Nebojsa Manojlovic, Goran Savic, Stevan Manojlovic
World Journal of Gastrointestinal Surgery.2024; 16(5): 1223. CrossRef - Case Study on Analysing the Early Disease Detection of Pancreatic Ductal Adenocarcinoma in Korean Association for Clinical Oncology
Sijithra Ponnarassery Chandran, N. Santhi
American Journal of Clinical Oncology.2024; 47(10): 475. CrossRef - Evaluating the benefits of adjuvant chemotherapy in patients with pancreatic cancer undergoing radical pancreatectomy after neoadjuvant therapy—a systematic review and meta-analysis
Jiahao Wu, Yike Zhang, Haodong Wang, Wenyi Guo, Chengqing Li, Yichen Yu, Han Liu, Feng Li, Lei Wang, Jianwei Xu
Frontiers in Oncology.2024;[Epub] CrossRef - Prognostic factors in localized pancreatic ductal adenocarcinoma after neoadjuvant therapy and resection: a systematic review and meta-analysis
Ammar A Javed, Alyssar Habib, Omar Mahmud, Asad Saulat Fatimi, Mahip Grewal, Nabiha Mughal, Jin He, Christopher L Wolfgang, Lois Daamen, Marc G Besselink
JNCI: Journal of the National Cancer Institute.2024;[Epub] CrossRef
- The survival effect of neoadjuvant therapy and neoadjuvant plus adjuvant therapy on pancreatic ductal adenocarcinoma patients with different TNM stages: a propensity score matching analysis based on the SEER database
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- 159 Download
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