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Trisomy 19 ependymoma, a newly recognized genetico-histological association, including clear cell ependymoma

Lookup NU author(s): Professor David Ellison

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Abstract

Ependymal tumors constitute a clinicopathologically heterogeneous group of brain tumors. They vary in regard to their age at first symptom, localization, morphology and prognosis. Genetic data also suggests heterogeneity. We define a newly recognized subset of ependymal tumors, the trisomy 19 ependymoma. Histologically, they are compact lesions characterized by a rich branched capillary network amongst which tumoral cells are regularly distributed. When containing clear cells they are called clear cell ependymoma. Most trisomy 19 ependymomas are supratentorial WHO grade III tumors of the young. Genetically, they are associated with trisomy 19, and frequently with a deletion of 13q21.31-31.2, three copies of 11q13.3-13.4, and/or deletions on chromosome 9. These altered chromosomal regions are indicative of genes and pathways involved in trisomy 19 ependymoma tumorigenesis. Recognition of this genetico-histological entity allows better understanding and dissection of ependymal tumors. © 2007 Rousseau et al; licensee BioMed Central Ltd.

Publication metadata

Author(s): Rousseau E, Palm T, Scaravilli F, Ruchoux M-M, Figarella-Branger D, Salmon I, Ellison D, Lacroix C, Chapon F, Mikol J, Vikkula M, Godfraind C

Publication type: Article

Publication status: Published

Journal: Molecular Cancer

Year: 2007

Volume: 6

Pages: 47

Date deposited: 04/06/2010

ISSN (print): 1476-4598

ISSN (electronic):

Publisher: BioMed Central Ltd.

URL: http://dx.doi.org/10.1186/1476-4598-6-47

DOI: 10.1186/1476-4598-6-47

PubMed id: 17626628

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