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ABSTRACT: Introduction
The role of definitive radiotherapy in advanced esophageal squamous cell carcinoma (ESCC), especially in the metastatic setting, remains unclear. Therefore, we aimed to investigate the efficacy of chemoradiotherapy (CRT) versus chemotherapy (CT) alone in these selected patients.Methods
We retrospectively evaluated 194 newly diagnosed advanced ESCC who underwent definitive CRT or CT alone, including 97 patients with locally advanced and 97 patients with distant metastatic disease. Cumulative overall survival (OS) and progression-free survival (PFS) were evaluated with a log-rank test. Propensity score matching was used to simulate random allocation. In addition, we performed subgroup analysis in the locally advanced and metastatic disease.Results
After matching, 63 well-paired patients were selected. The adjusted median OS (12.5 vs. 7.6 months, p = 0.002) and PFS (9.0 vs. 4.8 months, p = 0.0025) in the CRT group were superior to that in the CT-alone group. Further subgroup analysis revealed that CRT conferred survival benefits to both locally advanced and metastatic cohorts. For patients with distant metastasis, median OS (12.9 vs. 9.3 months, p = 0.029) and PFS (9.9 vs. 4.0 months, p =0.0032) in the CRT group were superior to that in the CT-alone group. In a multivariate Cox regression analysis of the entire cohort, additional definitive radiotherapy was independently associated with better OS (p = 0.041) and PFS (p = 0.007).Conclusions
In both locally advanced and metastatic ESCC, additional definitive-dose radiotherapy was associated with improved clinical outcomes. Therefore, more consideration should be given to its application in the metastatic setting.
SUBMITTER: Li LQ
PROVIDER: S-EPMC9005791 | biostudies-literature | 2022
REPOSITORIES: biostudies-literature
Li Li-Qing LQ Fu Qing-Guo QG Zhao Wei-Dong WD Wang Yu-Dan YD Meng Wan-Wan WW Su Ting-Shi TS
Frontiers in oncology 20220330
<h4>Introduction</h4>The role of definitive radiotherapy in advanced esophageal squamous cell carcinoma (ESCC), especially in the metastatic setting, remains unclear. Therefore, we aimed to investigate the efficacy of chemoradiotherapy (CRT) versus chemotherapy (CT) alone in these selected patients.<h4>Methods</h4>We retrospectively evaluated 194 newly diagnosed advanced ESCC who underwent definitive CRT or CT alone, including 97 patients with locally advanced and 97 patients with distant metast ...[more]