CLINICAL TRIAL
JOURNAL ARTICLE
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Molecular Screening for Cancer Treatment Optimization (MOSCATO-01) in Pediatric Patients: A Single-Institutional Prospective Molecular Stratification Trial.

Clinical Cancer Research 2017 October 16
Purpose: This single-institutional feasibility study prospectively characterized genomic alterations in recurrent or refractory solid tumors of pediatric patients to select a targeted therapy. Experimental Design: Following treatment failure, patients with signed consent and ages above 6 months, underwent tumor biopsy or surgical resection of primary or metastatic tumor site. These newly acquired samples were analyzed by comparative genomic hybridization array, next-generation sequencing for 75 target genes, whole-exome and RNA sequencing. Biological significance of the alterations and suggestion of most relevant targeted therapies available were discussed in a multidisciplinary tumor board. Results: From December 2012 to January 2016, 75 patients were included, 73 patients underwent 79 interventions, 56 of which were research biopsies with a low complication rate. All patients were pretreated, 37.0% had a brain tumor, and 63.0% had an extra-cranial solid tumor. Median tumor cell content was 70% (range, 0%-100%). Successful molecular analysis in 69 patients detected in 60.9% of patients an actionable alteration in various oncogenic pathways (42.4% with copy-number change, 33.3% with mutation, 2.1% with fusion), and change in diagnosis in three patients. Fourteen patients received 17 targeted therapies; two had received a matched treatment before inclusion. Conclusions: Research biopsies are feasible in advanced pediatric malignancies that exhibit a considerable amount of potentially actionable alterations. Genetic events affecting different cancer hallmarks and limited access to targeted agents within pediatric clinical trials remain the main obstacles that are addressed in our two subsequent precision medicine studies MAPPYACTS and AcSé-ESMART. Clin Cancer Res; 23(20); 6101-12. ©2017 AACR .

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