Department of Radiation Oncology, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, Guangdong, China.
Department of Radiation Oncology, People's Hospital of Zhongshan City, Zhongshan, Guangdong, China.
J Cancer Res Clin Oncol. 2022 Nov;148(11):2959-2969. doi: 10.1007/s00432-021-03846-6. Epub 2021 Nov 25.
OBJECTIVE: This study aimed to explore the clinical value of adjuvant chemotherapy (ACT) following concurrent chemo-radiotherapy (CCRT) and induction chemotherapy (ICT) in loco-regionally advanced nasopharyngeal carcinoma (LANC). METHODS: We included 839 newly diagnosed LANC patients in this study. ICT plus CCRT (ICT + CCRT group) was administered to 443 patients, and 396 patients received ACT after ICT plus CCRT (ICT + CCRT + ACT group). Univariate and multivariate Cox regression analyses were carried out. Furthermore, propensity score matching (PSM) was applied to balance the study and control groups. RESULTS: A total of 373 pairs of LANC patients were obtained after PSM analysis. We found that ACT following ICT + CCRT has no significant effect on improving the survival of LANC patients. By further exploring the ICT + CCRT + ACT treatment protocol, we excluded N0-1-positive patients and re-performed PSM in the ICT + CCRT and ICT + CCRT + ACT groups. Each group consisted of 237 patients. Kaplan-Meier analysis revealed that there were differences between the ICT + CCRT and ICT + CCRT + ACT groups in terms of the 5-year overall survival (OS) (78.9% vs. 85.0%, P = 0.034), disease-free survival (DFS) (73.4% vs. 81.7%, P = 0.029), and distant metastasis-free survival (DMFS) (84.9% vs. 76.0%, P = 0.019). In addition, the ICT + CCRT + ACT group had a higher incidence of grade 3/4 acute leukocytopenia/neutropenia. CONCLUSION: Compared with ICT + CCRT, ACT following ICT plus CCRT can reduce distant metastasis of N2-3-positive LANC and improve the OS and DFS. The results demonstrated the feasibility and clinical utility of ACT following ICT plus CCRT.
目的:本研究旨在探讨局部晚期鼻咽癌(LANC)患者同步放化疗(CCRT)和诱导化疗(ICT)后辅助化疗(ACT)的临床价值。
方法:本研究纳入了 839 例初诊 LANC 患者。其中 443 例患者接受 ICT+CCRT(ICT+CCRT 组),396 例患者在 ICT+CCRT 后接受 ACT(ICT+CCRT+ACT 组)。进行单因素和多因素 Cox 回归分析。此外,采用倾向评分匹配(PSM)平衡研究组和对照组。
结果:PSM 分析后共获得 373 对 LANC 患者。我们发现,ICT+CCRT 后行 ACT 对 LANC 患者的生存无显著影响。通过进一步探索 ICT+CCRT+ACT 治疗方案,我们排除了 N0-1 阳性患者,并在 ICT+CCRT 和 ICT+CCRT+ACT 组中重新进行 PSM。每组各有 237 例患者。Kaplan-Meier 分析显示,ICT+CCRT 组与 ICT+CCRT+ACT 组在 5 年总生存率(OS)(78.9% vs. 85.0%,P=0.034)、无病生存率(DFS)(73.4% vs. 81.7%,P=0.029)和无远处转移生存率(DMFS)(84.9% vs. 76.0%,P=0.019)方面存在差异。此外,ICT+CCRT+ACT 组 3/4 级急性白细胞减少/中性粒细胞减少的发生率更高。
结论:与 ICT+CCRT 相比,ICT+CCRT 后行 ACT 可降低 N2-3 阳性 LANC 的远处转移,提高 OS 和 DFS。这些结果证明了 ICT+CCRT 后行 ACT 的可行性和临床应用价值。
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