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Molecular Profiling Reveals Biologically Discrete Subsets and Pathways of Progression in Diffuse Glioma.


ABSTRACT: Therapy development for adult diffuse glioma is hindered by incomplete knowledge of somatic glioma driving alterations and suboptimal disease classification. We defined the complete set of genes associated with 1,122 diffuse grade II-III-IV gliomas from The Cancer Genome Atlas and used molecular profiles to improve disease classification, identify molecular correlations, and provide insights into the progression from low- to high-grade disease. Whole-genome sequencing data analysis determined that ATRX but not TERT promoter mutations are associated with increased telomere length. Recent advances in glioma classification based on IDH mutation and 1p/19q co-deletion status were recapitulated through analysis of DNA methylation profiles, which identified clinically relevant molecular subsets. A subtype of IDH mutant glioma was associated with DNA demethylation and poor outcome; a group of IDH-wild-type diffuse glioma showed molecular similarity to pilocytic astrocytoma and relatively favorable survival. Understanding of cohesive disease groups may aid improved clinical outcomes.

SUBMITTER: Ceccarelli M 

PROVIDER: S-EPMC4754110 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Molecular Profiling Reveals Biologically Discrete Subsets and Pathways of Progression in Diffuse Glioma.

Ceccarelli Michele M   Barthel Floris P FP   Malta Tathiane M TM   Sabedot Thais S TS   Salama Sofie R SR   Murray Bradley A BA   Morozova Olena O   Newton Yulia Y   Radenbaugh Amie A   Pagnotta Stefano M SM   Anjum Samreen S   Wang Jiguang J   Manyam Ganiraju G   Zoppoli Pietro P   Ling Shiyun S   Rao Arjun A AA   Grifford Mia M   Cherniack Andrew D AD   Zhang Hailei H   Poisson Laila L   Carlotti Carlos Gilberto CG   Tirapelli Daniela Pretti da Cunha DP   Rao Arvind A   Mikkelsen Tom T   Lau Ching C CC   Yung W K Alfred WK   Rabadan Raul R   Huse Jason J   Brat Daniel J DJ   Lehman Norman L NL   Barnholtz-Sloan Jill S JS   Zheng Siyuan S   Hess Kenneth K   Rao Ganesh G   Meyerson Matthew M   Beroukhim Rameen R   Cooper Lee L   Akbani Rehan R   Wrensch Margaret M   Haussler David D   Aldape Kenneth D KD   Laird Peter W PW   Gutmann David H DH   Noushmehr Houtan H   Iavarone Antonio A   Verhaak Roel G W RG  

Cell 20160101 3


Therapy development for adult diffuse glioma is hindered by incomplete knowledge of somatic glioma driving alterations and suboptimal disease classification. We defined the complete set of genes associated with 1,122 diffuse grade II-III-IV gliomas from The Cancer Genome Atlas and used molecular profiles to improve disease classification, identify molecular correlations, and provide insights into the progression from low- to high-grade disease. Whole-genome sequencing data analysis determined th  ...[more]

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