Individualization of Treatment Improves the Survival of Children With High-Risk Solid Tumors: Comparative Patient Series Analysis in a Real-Life Scenario.

Autor:	Kyr M; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia., Polaskova K; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia., Kuttnerova Z; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia., Merta T; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia., Neradil J; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia.; Laboratory of Tumor Biology, Department of Experimental Biology, School of Science, Masaryk University, Brno, Czechia., Berkovcova J; Laboratory of Molecular Pathology, Department of Oncological Pathology, Masaryk Memorial Cancer Institute, Brno, Czechia., Horky O; Laboratory of Molecular Pathology, Department of Oncological Pathology, Masaryk Memorial Cancer Institute, Brno, Czechia., Jezova M; Department of Pathology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia., Veselska R; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia.; Laboratory of Tumor Biology, Department of Experimental Biology, School of Science, Masaryk University, Brno, Czechia., Klement GL; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; CSTS Health Care Inc., Toronto, ON, Canada., Valik D; Department of Laboratory Medicine, Masaryk Memorial Cancer Institute, Brno, Czechia., Sterba J; Department of Pediatric Oncology, University Hospital Brno and School of Medicine, Masaryk University, Brno, Czechia.; International Clinical Research Centre, St. Anne's University Hospital Brno, Brno, Czechia.
Jazyk:	angličtina
Zdroj:	Frontiers in oncology [Front Oncol] 2019 Jul 17; Vol. 9, pp. 644. Date of Electronic Publication: 2019 Jul 17 (Print Publication: 2019).
DOI:	10.3389/fonc.2019.00644
Abstrakt:	Introduction: The individualization of treatment is attractive, especially in children with high-risk cancer. In such a rare and very heterogeneous group of diseases, large population-based clinical randomized trials are not feasible without international collaboration. We therefore propose comparative patient series analysis in a real-life scenario. Methods: Open cohort observational study, comparative analysis. Seventy patients with high-risk solid tumors diagnosed between 2003 and 2015 and in whom the treatment was individualized either empirically or based on biomarkers were analyzed. The heterogeneity of the cohort and repeated measurements were advantageously utilized to increase effective sample size using appropriate statistical tools. Results: We demonstrated a beneficial effect of empirically given low-dose metronomic chemotherapy (HR 0.46 for relapses, p = 0.017) as well as various repurposed or targeted agents (HR 0.15 for deaths, p = 0.004) in a real-life scenario. However, targeted agents given on the basis of limited biological information were not beneficial. Conclusions: Comparative patient series analysis provides institutional-level evidence for treatment individualization in high-risk pediatric malignancies. Our findings emphasize the need for a comprehensive, multi omics assessment of the tumor and the host as well whenever molecularly driven targeted therapies are being considered. Low-dose metronomic chemotherapy or local control of the disease may be a more rational option in situations where targeted treatment cannot be justified by robust evidence and comprehensive biological information. "Targeted drugs" may be given empirically with a realistic benefit expectation when based on robust rationale.
Databáze:	MEDLINE
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