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Chen CC, Chang SC, Chang YY, Lin BW, Chen HH, Hsieh YY, Hsu HC, Hsieh MC, Ke TW, Kuan FC, Wu CC, Lu WC, Su YL, Liang YH, Chen JB, Huang HY, Tsai HL, Wang JY. Survival benefit of metastasectomy in first-line cetuximab therapy in patients with RAS wild-type metastatic colorectal cancer: a nationwide registry. Am J Cancer Res 2023; 13:6333-6345. [PMID: 38187069 PMCID: PMC10767339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/13/2023] [Indexed: 01/09/2024] Open
Abstract
This multicenter study aimed to explore the survival benefit of metastasectomy by first-line cetuximab-based chemotherapy in real-world patients with RAS wild-type metastatic colorectal cancer (mCRC). The primary endpoints were overall survival (OS) and progression-free survival (PFS). The secondary endpoints included objective response rate (ORR), disease control rate (DCR), and metastasectomy rate. The exploratory endpoint was the optimal treatment cycle for better OS and PFS. Receiver operating characteristic curve with the area under curve (AUC) was used to identify the optimal cut-off cycle for survival outcomes. A total of 758 mCRC patients were enrolled in this study, with a median OS of 35.1 months, median PFS of 14.6 months, and metastasectomy rate of 21.4%. Left-sided mCRC had a significantly higher DCR (88.9% vs. 73.1%, P<0.001) and better OS (36.4 vs. 19.6 months, P<0.001). There were no significant differences in PFS and metastasectomy rate between left-sided and right-sided mCRC. However, mCRC patients who underwent metastasectomy over the course of treatment had better OS (54.9 vs. 28.6 months, P<0.001) and PFS (21.0 vs. 13.1 months, P<0.001) than those who did not. Notably, right-sided mCRC who benefited from first-line cetuximab-based chemotherapy to underwent metastasectomy also had favorable outcomes, on a par with left-sided mCRC. The optimal treatment cycle was 14 cycles (AUC: 0.779, P<0.001). Patients who received ≥14 cycles had higher metastasectomy rates (27.5% vs. 13.5%, P<0.001), favorable OS (42.6 vs. 23.4 months, P<0.001) and PFS (18.1 vs. 8.6 months, P<0.001), and, importantly, had comparable adverse events compared with patients who received <14 cycles of treatment. Patients who underwent metastasectomy after or during first-line cetuximab therapy have an improved OS in both left-sided and right-sided mCRC. Furthermore, patients receive ≥14 cycles of treatment whenever possible to achieve a higher likelihood of metastasectomy was associated with favorable survival outcomes.
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Affiliation(s)
- Chou-Chen Chen
- Department of Surgery, Taichung Veterans General HospitalTaichung, Taiwan
| | - Shih-Ching Chang
- Division of Colon and Rectal Surgery, Department of Surgery, Veterans General HospitalTaipei, Taiwan
| | - Yu-Yao Chang
- Department of Colorectal Surgery, Changhua Christian HospitalChanghua, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing UniversityTaichung, Taiwan
| | - Bo-Wen Lin
- Division of Colon and Rectal Surgery, Department of Surgery, National Cheng Kung University HospitalTainan, Taiwan
| | - Hong-Hwa Chen
- Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial HospitalKaohsiung, Taiwan
| | - Yao-Yu Hsieh
- Division of Hematology and Oncology, Shuang Ho Hospital, Taipei Medical UniversityNew Taipei City, Taiwan
- Division of Hematology and Oncology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
| | - Hung-Chih Hsu
- Division of Hematology-Oncology, Chang Gung Memorial Hospital at LinkouTaoyuan, Taiwan
- College of Medicine, Chang Gung UniversityTaoyuan, Taiwan
| | - Meng-Che Hsieh
- Division of Hematology Oncology, Department of Internal Medicine, E-Da Hospital, I-Shou UniversityKaohsiung, Taiwan
| | - Tao-Wei Ke
- Division of Colorectal Surgery, Department of Surgery, China Medical University HospitalTaichung, Taiwan
| | - Feng-Che Kuan
- Department of Hematology and Oncology, Chang Gung Memorial HospitalChiayi, Taiwan
| | - Chih-Chien Wu
- Division of Colorectal Surgery, Department of Surgery, Kaohsiung Veterans General HospitalKaohsiung, Taiwan
- School of Medicine, National Yang Ming Chiao Tung UniversityTaipei, Taiwan
| | - Wei-Chen Lu
- Department of Oncology, National Taiwan University Hospital Yunlin BranchYunlin, Taiwan
| | - Yu-Li Su
- Division of Hematology Oncology, Department of Internal Medicine, Chang Gung Memorial HospitalKaohsiung, Taiwan
| | - Yi-Hsin Liang
- Department of Oncology, National Taiwan University HospitalTaipei, Taiwan
| | - Joe-Bin Chen
- Department of Surgery, Chung Shan Medical University HospitalTaichung, Taiwan
| | - Hsuan-Yuan Huang
- Department of Colorectal Surgery, Changhua Christian HospitalChanghua, Taiwan
| | - Hsiang-Lin Tsai
- Division of Colorectal Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical UniversityKaohsiung, Taiwan
- Department of Surgery, Faculty of Medicine, College of Medicine, Kaohsiung Medical UniversityKaohsiung, Taiwan
| | - Jaw-Yuan Wang
- Division of Colorectal Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical UniversityKaohsiung, Taiwan
- Department of Surgery, Faculty of Medicine, College of Medicine, Kaohsiung Medical UniversityKaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical UniversityKaohsiung, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical UniversityKaohsiung, Taiwan
- Center for Cancer Research, Kaohsiung Medical UniversityKaohsiung, Taiwan
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