PMID- 19255330 OWN - NLM STAT- MEDLINE DCOM- 20090429 LR - 20161125 IS - 1527-7755 (Electronic) IS - 0732-183X (Linking) VI - 27 IP - 10 DP - 2009 Apr 1 TI - Outcome prediction in pediatric medulloblastoma based on DNA copy-number aberrations of chromosomes 6q and 17q and the MYC and MYCN loci. PG - 1627-36 LID - 10.1200/JCO.2008.17.9432 [doi] AB - PURPOSE: Medulloblastoma is the most common malignant brain tumor in children. Current treatment decisions are based on clinical variables. Novel tumor-derived biomarkers may improve the risk stratification of medulloblastoma patients. PATIENTS AND METHODS: A model for the molecular risk stratification was proposed from an array-based comparative genomic hybridization (array-CGH) screen (n = 80). Fluorescence in situ hybridization (FISH) analyses for chromosome arms 6q, 17p, and 17q and the MYC and MYCN loci were performed in an independent validation set (n = 260). Copy number aberrations were correlated with clinical, histologic, and survival data. RESULTS: Gain of 6q and 17q and genomic amplification of MYC or MYCN were each associated with poor outcome in the array-CGH study (n = 80). In contrast, all patients with 6q-deleted tumors survived. Given these findings, the following hierarchical molecular staging system was defined: (1) MYC/MYCN amplification, (2) 6q gain, (3) 17q gain, (4) 6q and 17q balanced, and (5) 6q deletion. The prognostic value of this staging system was investigated by FISH analysis (n = 260). The addition of molecular markers to clinical risk factors resulted in the identification of a large proportion of patients (72 of 260 patients; 30%) at high risk for relapse and death who would be considered standard risk by application of clinical variables alone. CONCLUSION: Genomic aberrations in medulloblastoma are powerful independent markers of disease progression and survival. By adding genomic markers to established clinical and histologic variables, outcome prediction can be substantially improved. Because the analyses can be conducted on routine paraffin-embedded material, it will be especially feasible to use this novel molecular staging system in large multicenter clinical trials. FAU - Pfister, Stefan AU - Pfister S AD - Division of Molecular Genetics and Biostatistics and Clinical Cooperation Unit Neuropathology, German Cancer Research Center, Department of Pediatric Oncology, Hematology and Immunology, University of Heidelberg, Heidelberg, Germany. s.pfister@dkfz.de FAU - Remke, Marc AU - Remke M FAU - Benner, Axel AU - Benner A FAU - Mendrzyk, Frank AU - Mendrzyk F FAU - Toedt, Grischa AU - Toedt G FAU - Felsberg, Jorg AU - Felsberg J FAU - Wittmann, Andrea AU - Wittmann A FAU - Devens, Frauke AU - Devens F FAU - Gerber, Nicolas U AU - Gerber NU FAU - Joos, Stefan AU - Joos S FAU - Kulozik, Andreas AU - Kulozik A FAU - Reifenberger, Guido AU - Reifenberger G FAU - Rutkowski, Stefan AU - Rutkowski S FAU - Wiestler, Otmar D AU - Wiestler OD FAU - Radlwimmer, Bernhard AU - Radlwimmer B FAU - Scheurlen, Wolfram AU - Scheurlen W FAU - Lichter, Peter AU - Lichter P FAU - Korshunov, Andrey AU - Korshunov A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090302 PL - United States TA - J Clin Oncol JT - Journal of clinical oncology : official journal of the American Society of Clinical Oncology JID - 8309333 RN - 0 (MYCN protein, human) RN - 0 (N-Myc Proto-Oncogene Protein) RN - 0 (Nuclear Proteins) RN - 0 (Oncogene Proteins) SB - IM MH - Area Under Curve MH - Cerebellar Neoplasms/*genetics/mortality MH - Child MH - Child, Preschool MH - Chromosome Aberrations MH - Chromosomes, Human, Pair 17/*genetics MH - Chromosomes, Human, Pair 6/*genetics MH - Comparative Genomic Hybridization MH - Female MH - Gene Dosage MH - Genes, myc/*genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Kaplan-Meier Estimate MH - Male MH - Medulloblastoma/*genetics/mortality MH - N-Myc Proto-Oncogene Protein MH - Nuclear Proteins/*genetics MH - Oncogene Proteins/*genetics MH - Prognosis MH - ROC Curve MH - Tissue Array Analysis EDAT- 2009/03/04 09:00 MHDA- 2009/04/30 09:00 CRDT- 2009/03/04 09:00 PHST- 2009/03/04 09:00 [entrez] PHST- 2009/03/04 09:00 [pubmed] PHST- 2009/04/30 09:00 [medline] AID - JCO.2008.17.9432 [pii] AID - 10.1200/JCO.2008.17.9432 [doi] PST - ppublish SO - J Clin Oncol. 2009 Apr 1;27(10):1627-36. doi: 10.1200/JCO.2008.17.9432. Epub 2009 Mar 2.