Dataset

Multi-omics analysis defines core genomic alterationsin pheochromocytomas and paragangliomas

Dataset ID Technology Samples
EGAD00001000986 Illumina HiSeq 2000 60

Dataset Description

Pheochromocytomas and paragangliomas (PCC/PGL) are neural crest derived tumors with a very strong genetic component. We report the first integrated genomic portrayal of a large collection of PCC/PGL. SNP array analysis revealed distinct copy-number patterns associated with genetic background. Whole-exome sequencing showed a low mutation rate of 0.3 mutations per megabase, with few recurrent somatic mutations in genes not previously associated with PCC/PGL. DNA methylation arrays and miRNA sequencing identified DNA methylation changes and miRNA expression clusters strongly associated with mRNA expression profiling. Overexpression of the miRNA cluster 182/96/183 was specific of SDHB-mutated tumors and induced invasive traits, whereas silencing of the imprinted DLK1-MEG3 miRNA cluster appeared as a potential driver in a subgroup of sporadic tumors. Altogether, the complete genomic landscape of PCC/PGL is mainly driven by distinct germline and/or somatic mutations in susceptibility genes and reveals different molecular entities, characterized by a set of unique genomic alterations.

Who controls access to this dataset

For each dataset that requires controlled access, there is a corresponding Data Access Committee (DAC) who determine access permissions. Access to actual data files is not managed by the EGA. If you need to request access to this data set, please contact:

Service de Génétique,Hôpital Européen Georges Pompidou
Contact person: Anne-Paule Gimenez-Roqueplo
Email: anne-paule [dot] gimenez-roqueplo [at] egp [dot] aphp [dot] fr
Access information:
More details: EGAC00001000224

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