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Genetic abnormalities detected in ependymomas by comparative genomic hybridisation

Lookup NU author(s): Emeritus Professor Robert Perry, Dr David Walker, Dr Richard Gilbertson, Professor David Ellison

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Abstract

Using comparative genomic hybridisation, we have analysed genetic imbalance in a series of 86 ependymomas from children and adults. Tumours were derived from intracranial and spinal sites, and classified histologically as classic, anaplastic or myxopapillary. Ependymomas showing a balanced profile were sgnificantly (P <0.0005) more frequent in children than adults. Profiles suggesting intermediate ploidy were common (44% of all tumours), and found more often (P<0.0005) in tumours from adults and the spinal region. Loss of 22q was the most common specific abnormality, occurring in 50% of spinal (medullary) ependymomas and 26% of tumours overall. Genetic profiles combining loss of 22q with other specific abnormalities - gain of 1q, loss of 6q, loss of 10q/10, loss of 13, loss of 14q/14 - varied according to site and histology. In particular, we showed that classic ependymomas from within the cranium and spine have distinct genetic profiles. Classic and anaplastic ependymomas with gain of 1q tended to occur in the posterior fossa of children and to behave aggressively. Our extensive data on ependymomas demonstrate significant associations between genetic aberrations and clinicopathological variables, and represent a starting point for further biological and clinical studies. © 2002 Cancer Research UK.


Publication metadata

Author(s): Ellison D; Walker D; Perry R; Gilbertson R; Carter M; Nicholson J; Ross F; Crolla J; Allibone R; Balaji V

Publication type: Article

Publication status: Published

Journal: British Journal of Cancer

Year: 2002

Volume: 86

Issue: 6

Pages: 929-939

ISSN (print): 0007-0920

ISSN (electronic): 1532-1827

Publisher: Nature Publishing Group

URL: http://dx.doi.org/10.1038/sj.bjc.6600180

DOI: 10.1038/sj.bjc.6600180

PubMed id: 11953826


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