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- Title
Prognostic and Predictive Factors for the Curative Treatment of Esophageal and Gastric Cancer in Randomized Controlled Trials: A Systematic Review and Meta-Analysis.
- Authors
van den Ende, Tom; ter Veer, Emil; Mali, Rosa M. A.; van Berge Henegouwen, Mark I.; Hulshof, Maarten C. C. M.; van Oijen, Martijn G. H.; van Laarhoven, Hanneke W. M.
- Abstract
Background: An overview of promising prognostic variables and predictive subgroups concerning the curative treatment of esophageal and gastric cancer from randomized controlled trials (RCTs) is lacking. Therefore, we conducted a systematic review and meta-analysis. Methods: PubMed, EMBASE, CENTRAL, and ASCO/ESMO conferences were searched up to March 2019 for RCTs on the curative treatment of esophageal or gastric cancer with data on prognostic and/or predictive factors for overall survival. Prognostic factors were deemed potentially clinically relevant according to the following criteria; (1) statistically significant (p < 0.05) in a multivariate analysis, (2) reported in at least 250 patients, and (3) p < 0.05, in ≥33% of the total number of patients in RCTs reporting this factor. Predictive factors were potentially clinically-relevant if (1) the p-value for interaction between subgroups was <0.20 and (2) the hazard ratio in one of the subgroups was significant (p < 0.05). Results: For gastric cancer, 39 RCTs were identified (n = 13,530 patients) and, for esophageal cancer, 33 RCTs were identified (n = 8618 patients). In total, we identified 23 potentially clinically relevant prognostic factors for gastric cancer and 16 for esophageal cancer. There were 15 potentially clinically relevant predictive factors for gastric cancer and 10 for esophageal cancer. Conclusion: The identified prognostic and predictive factors can be included and analyzed in future RCTs and be of guidance for nomograms. Further validation should be performed in large patient cohorts.
- Subjects
AMERICAN Society of Clinical Oncology; COMBINED modality therapy; CONFERENCES &; conventions; ESOPHAGEAL tumors; MEDICAL information storage &; retrieval systems; MEDLINE; META-analysis; ONLINE information services; STOMACH tumors; SYSTEMATIC reviews; STATISTICAL significance; PREDICTIVE validity; PREDICTIVE tests
- Publication
Cancers, 2019, Vol 11, Issue 4, p530
- ISSN
2072-6694
- Publication type
Article
- DOI
10.3390/cancers11040530