Unknown,Transcriptomics,Genomics,Proteomics

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Comparative genomic hybridization by array of human intracranial childhood ependymomas at diagnosis and relapse


ABSTRACT: Goal of the experiment : Recurrence is a frequent phenomenon in intracranial childhood ependymomas. To understand this process, we investigated whether the gene expression profiling of matched ependymomas at diagnosis and at relapse could reveal key molecular events involved in tumor progression. To gain new insight in this process and identify mechanisms associated with recurrence, we compared the CGH profiles of local recurrences with the corresponding initial tumors. Brief description We analyzed 17 tumor samples at diagnosis and a total of 27 paired recurrences. Recurrences analyzed occurred after surgery only in 12 cases, surgery plus chemotherapy only in 9 cases and any treatment plus radiotherapy in 6 cases. We compared the level of CGH profile for each tumor at diagnosis and recurrence relative to normal commercial DNA using Agilent 4x44K Human CGH microarrays.

ORGANISM(S): Homo sapiens

DISEASE(S): normal

SUBMITTER: Philippe DESSEN 

PROVIDER: E-TABM-1023 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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