Nature communications · 2020
The integrated genomic and epigenomic landscape of brainstem glioma.
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Chen Lee H, Pan Changcun, Diplas Bill H, Xu Cheng, Hansen Landon J, Wu Yuliang, Chen Xin, Geng Yibo, Sun Tao, Sun Yu, Zhang Peng, Wu Zhen, Zhang Junting, Li Deling, Zhang Yang, Wu Wenhao, Wang Yu, Li Guangyu, Yang Jie, Wang Xiaoyue, Xu Ce, Wang Sizhen, Waitkus Matthew S, He Yiping, McLendon Roger E, Ashley David M, Yan Hai, Zhang Liwei
Аннотация
Brainstem gliomas are a heterogeneous group of tumors that encompass both benign tumors cured with surgical resection and highly lethal cancers with no efficacious therapies. We perform a comprehensive study incorporating epigenetic and genomic analyses on a large cohort of brainstem gliomas, including Diffuse Intrinsic Pontine Gliomas. Here we report, from DNA methylation data, distinct clusters termed H3-Pons, H3-Medulla, IDH, and PA-like, each associated with unique genomic and clinical profiles. The majority of tumors within H3-Pons and-H3-Medulla harbors H3F3A mutations but shows distinct methylation patterns that correlate with anatomical localization within the pons or medulla, respectively. Clinical data show significantly different overall survival between these clusters, and pathway analysis demonstrates different oncogenic mechanisms in these samples. Our findings indicate that the integration of genetic and epigenetic data can facilitate better understanding of brainstem gliomagenesis and classification, and guide future studies for the development of novel treatments for this disease.