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Molecular subgroups of medulloblastoma: the current consensus

Lookup NU author(s): Professor Steven Clifford, Professor David Ellison, Dr Richard Gilbertson

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Abstract

Medulloblastoma, a small blue cell malignancy of the cerebellum, is a major cause of morbidity and mortality in pediatric oncology. Current mechanisms for clinical prognostication and stratification include clinical factors (age, presence of metastases, and extent of resection) as well as histological subgrouping (classic, desmoplastic, and large cell/anaplastic histology). Transcriptional profiling studies of medulloblastoma cohorts from several research groups around the globe have suggested the existence of multiple distinct molecular subgroups that differ in their demographics, transcriptomes, somatic genetic events, and clinical outcomes. Variations in the number, composition, and nature of the subgroups between studies brought about a consensus conference in Boston in the fall of 2010. Discussants at the conference came to a consensus that the evidence supported the existence of four main subgroups of medulloblastoma (Wnt, Shh, Group 3, and Group 4). Participants outlined the demographic, transcriptional, genetic, and clinical differences between the four subgroups. While it is anticipated that the molecular classification of medulloblastoma will continue to evolve and diversify in the future as larger cohorts are studied at greater depth, herein we outline the current consensus nomenclature, and the differences between the medulloblastoma subgroups.


Publication metadata

Author(s): Taylor MD, Northcott PA, Korshunov A, Remke M, Cho YJ, Clifford SC, Eberhart CG, Parsons DW, Rutkowski S, Gajjar A, Ellison DW, Lichter P, Gilbertson RJ, Pomeroy SL, Kool M, Pfister SM

Publication type: Article

Publication status: Published

Journal: Acta Neuropathologica

Year: 2012

Volume: 123

Issue: 4

Pages: 465-472

Print publication date: 01/04/2012

ISSN (print): 0001-6322

ISSN (electronic): 1432-0533

Publisher: Springer

URL: http://dx.doi.org/10.1007/s00401-011-0922-z

DOI: 10.1007/s00401-011-0922-z


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