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Long-Term Survival in Nonsurgical Esophageal Cancer Patients Who Received Consolidation Chemotherapy Compared With Patients Who Received Concurrent Chemoradiotherapy Alone: A Systematic Review and Meta-Analysis
- Source :
- Frontiers in Oncology, Vol 10 (2021), Frontiers in Oncology
- Publication Year :
- 2021
- Publisher :
- Frontiers Media SA, 2021.
-
Abstract
- BackgroundConcurrent chemoradiotherapy (CCRT) is the standard treatment for nonsurgical esophageal cancer (EC). However, esophageal cancer patients receiving CCRT alone are still unsatisfactory in terms of local control and overall survival (OS) benefit. Clinicians generally add consolidation chemotherapy (CCT) after CCRT. It remains controversial whether CCT following CCRT is beneficial for esophageal cancer. We, therefore, undertook a meta-analysis to assess the need for CCT in inoperable esophageal cancer.Materials and MethodsWe combed PubMed, Embase, Cochrane Library, Web of Science, and CNKI for relevant published articles up to July 2020 that compared CCRT plus CCT to CCRT alone for patients with nonsurgical EC. Our primary endpoint was OS and progression-free survival (PFS), and the secondary endpoint was treatment toxicity. We analyzed the hazard ratio (HR) to estimate the time-to-event data and the odds ratio (OR) to compare the treatment-related effect. To assess heterogeneity, we performed the I2 test and examined publication bias using funnel plots analysis.ResultsThe 11 retrospective studies involved 2008 patients. Of these 2008 patients, 1018 received CCRT plus CCT, and 990 received CCRT. Compared to CCRT alone, CCT after CCRT did not improve disease control rate (DCR) (OR 1.66; 95% CI 0.53–5.15, p=0.384) and objective response rate (ORR) (OR 1.44; 95% CI 0.62–3.35, p=0.393). However, OS (HR 0.72; 95% CI 0.59–0.86, p < 0.001) and PFS (HR 0.61; 95% CI 0.44–0.84, p=0.003) did increase. Our results show that CCT plus CCRT had a clear survival advantage over CCRT alone. The risk of treatment toxicity did not increase for EC patients who received CCT.ConclusionCCT after CCRT significantly increases OS and PFS in patients with nonsurgical EC and could provide them remarkable survival benefits. The results provide an evidence-based framework for the use of CCT after CCRT.
- Subjects :
- 0301 basic medicine
Oncology
medicine.medical_specialty
Cancer Research
lcsh:RC254-282
chemoradiotherapy
03 medical and health sciences
0302 clinical medicine
Internal medicine
medicine
Clinical endpoint
consolidation chemotherapy
esophageal cancer
business.industry
Standard treatment
Hazard ratio
toxicity
Retrospective cohort study
Odds ratio
Esophageal cancer
medicine.disease
lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens
meta-analysis
030104 developmental biology
030220 oncology & carcinogenesis
Meta-analysis
Systematic Review
business
Chemoradiotherapy
Subjects
Details
- Language :
- English
- ISSN :
- 2234943X
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Frontiers in Oncology
- Accession number :
- edsair.doi.dedup.....58fa7e7d1131f30f96a6654d2524803a
- Full Text :
- https://doi.org/10.3389/fonc.2020.604657