Journal Article DKFZ-2020-00348

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Genomic footprints of activated telomere maintenance mechanisms in cancer.

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2020
Nature Publishing Group UK [London]

Nature Communications 11(1), 733 () [10.1038/s41467-019-13824-9]
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Abstract: Cancers require telomere maintenance mechanisms for unlimited replicative potential. They achieve this through TERT activation or alternative telomere lengthening associated with ATRX or DAXX loss. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, we dissect whole-genome sequencing data of over 2500 matched tumor-control samples from 36 different tumor types aggregated within the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium to characterize the genomic footprints of these mechanisms. While the telomere content of tumors with ATRX or DAXX mutations (ATRX/DAXXtrunc) is increased, tumors with TERT modifications show a moderate decrease of telomere content. One quarter of all tumor samples contain somatic integrations of telomeric sequences into non-telomeric DNA. This fraction is increased to 80% prevalence in ATRX/DAXXtrunc tumors, which carry an aberrant telomere variant repeat (TVR) distribution as another genomic marker. The latter feature includes enrichment or depletion of the previously undescribed singleton TVRs TTCGGG and TTTGGG, respectively. Our systematic analysis provides new insight into the recurrent genomic alterations associated with telomere maintenance mechanisms in cancer.

Classification:

Note: #EA:B330#LA:B330#

Contributing Institute(s):
  1. Angewandte Bioinformatik (B330)
  2. Theoretische Bioinformatik (B080)
  3. B066 Chromatin-Netzwerke (B066)
  4. Bioinformatik und Omics Data Analytics (B240)
  5. DKTK HD zentral (HD01)
  6. B062 Pädiatrische Neuroonkologie (B062)
  7. Pediatric Glioma (B360)
  8. B063 Krebsgenomforschung (B063)
Research Program(s):
  1. 312 - Functional and structural genomics (POF3-312) (POF3-312)

Appears in the scientific report 2020
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Medline ; Creative Commons Attribution CC BY (No Version) ; DOAJ ; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; PubMed Central ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record
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 Record created 2020-02-11, last modified 2024-02-29


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