FA03.02: IS SURGERY STILL NECESSARY IN RESECTABLE OESOPHAGEAL CANCER? META-ANALYSES OF DEFINITIVE CHEMORADIOTHERAPY VERSUS TRIMODALITY THERAPY. (14th September 2018) - Voeten, Daan
Abstract: Background: Standard therapy for resectable oesophageal carcinoma is trimodality therapy (TMT) consisting of neoadjuvant chemoradiotherapy and oesophagectomy. Evidence of survival advantage of TMT over organ preserving definitive chemoradiotherapy (dCRT) is inconclusive. The aim of this study is to compare survival between TMT and dCRT. Methods: A systematic review and meta-analyses were conducted. Randomised controlled trials and observational studies on primary resectable, curatively treated, oesophageal carcinoma patients above 18 years were included. Three online databases were searched for studies comparing TMT with dCRT. Primary outcomes were two-, three- and five-year overall survival rates. Risk of bias was assessed using the Cochrane risk of bias tools for RCTs and cohort studies. Results: Thirty-two studies described in 35 articles were included in this systematic review, thirty-three were included in the meta-analyses. Two-, three- and five-year overall survival was significantly lower in dCRT compared to TMT, with relative risks (RR) of 0.69 (95%CI, 0.57–0.83), 0.76 (95%CI, 0.63–0.92), and 0.57 (95%CI, 0.47–0.71) respectively. However, when only analysing studies with equal patient groups at baseline no differences for two-, three- and five-year overall survival were found with RRs of 0.83 (95%CI, 0.62–1.10), 0.81 (95%CI 0.57–1.14), 0.63 (95%CI, 0.36–1.12). The forest plot for three-year overall survival is presented in figure 1. Figure 1. 3 year overall survival rates Conclusion: Despite limitations of the available evidence these meta-analyses suggest there is no survival advantage for TMT over dCRT, assuming comparable groups at baseline. Selection of surgical candidates in oesophageal carcinoma should be part of personalised and tailored care. Disclosure: All authors have declared no conflicts of interest.