Résumé
Infant gliomas have paradoxical clinical behavior compared to those in children and adults: low-grade tumors have a higher mortality rate, while high-grade tumors have a better outcome. However, we have little understanding of their biology and therefore cannot explain this behavior nor what constitutes optimal clinical management. Here we report a comprehensive genetic analysis of an international cohort of clinically annotated infant gliomas, revealing 3 clinical subgroups. Group 1 tumors arise in the cerebral hemispheres and harbor alterations in the receptor tyrosine kinases ALK, ROS1, NTRK and MET. These are typically single-events and confer an intermediate outcome. Groups 2 and 3 gliomas harbor RAS/MAPK pathway mutations and arise in the hemispheres and midline, respectively. Group 2 tumors have excellent long-term survival, while group 3 tumors progress rapidly and do not respond well to chemoradiation. We conclude that infant gliomas comprise 3 subgroups, justifying the need for specialized therapeutic strategies.
Langue d'origine | English |
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Numéro d'article | 4343 |
Journal | Nature Communications |
Volume | 10 |
Numéro de publication | 1 |
DOI | |
Statut de publication | Published - déc. 1 2019 |
Publié à l'externe | Oui |
Note bibliographique
Funding Information:A.S.G.S. was supported by a Garron Family Cancer Center fellowship, Worldwide Cancer Research and Gertrud-Hagmann-Stiftung. S.R. was supported by RESTRACOMP of the Hospital for Sick Children, the Canadian Institute of Health Research (CIHR) CGS-M scholarship, and an Ontario Graduate Scholarship (OGS). M.Z. was supported by a Garron Family Cancer Center fellowship and RESTRACOMP of The Hospital for Sick Children. This research is funded by the Canadian Cancer Society (Grant # 702296), Canadian Institutes of Health Research (Grant #159805) and A Kids’ Brain Tumor Cure Foundation, aka The PLGA foundation. We would like to acknowledge the Canadian Centre for Computational Genomics (C3G), part of the Genome Innovation Network (GIN), funded by Genome Canada through Genome Quebec and Ontario Genomics. For excellent technical support, advice and expertise, we thank: Paula Marrano, Famida Spatare, Monte Borden (Department of Pathology, the Hospital for Sick Children, Toronto); Cindy Zhang (Brain Tumor Research Center, The Hospital for Sick Children, Toronto); Dr. João Gonçalves (Mount Sinai Hospital, Toronto); Kelly Pairan (Department of Pathology and Laboratory Medicine, Nationwide Children’s Hospital, Columbus).
Publisher Copyright:
© 2019, The Author(s).
ASJC Scopus Subject Areas
- General Chemistry
- General Biochemistry,Genetics and Molecular Biology
- General Physics and Astronomy