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Published on: February 12, 2017
Palliative chemotherapy does not improve survival in metastatic esophageal cancer
Antoine Adenis1, Nicolas Penel, Samy Horn
1Faculté Libre de Médecine, Department of Gastrointestinal and Urological Oncology, Catholic University, Lille, France. a-adenis@o-lambret.fr
Background:
The role of chemotherapy in metastatic esophageal carcinoma (MEC) remains a matter of debate. The aim of this retrospective study was to analyze the survival impact of chemotherapy after stratification for prognostic factors.
Methods:
Consecutive patients with MEC (1995 to 2008) were randomly assigned to a development (n = 171) and a validation cohort (n = 113). We had first identified prognostic factors using the Kaplan-Meier and Cox methods in the development cohort and then validated them in the validation cohort. Then, we analyzed the impact of chemotherapy after stratification for these prognostic factors. The majority of patients had squamous cell carcinoma (80%).
Results:
The Cox model has retained 2 prognostic factors only: associated cancers (hazard ratio = 2.77, range 1.39-5.54, p = 0.004) and grade 3-4 dysphagia (hazard ratio = 1.44, range 1.08-2.14, p = 0.007). Median survival was 10.9 in patients with 0 (n = 77), 6.2 in those with 1 (n = 65) and 1.8 months in those with 2 prognostic factors (n = 11/171; p = 0.025). The median survival times of the patients with 0, 1 and 2 prognostic factors were 13 versus 9 months (nonsignificant, NS), 6 versus 5 months (NS) and 5 versus 1.3 months (NS) in patients with and without chemotherapy, respectively.
Conclusion:
Our data suggest that chemotherapy has no significant effect on survival for unselected MEC patients, regardless of the prognostic factors we identified.
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