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Genomic footprints of activated telomere maintenance mechanisms in cancer

  • PCAWG Structural Variation Working Group
  • , PCAWG Consortium
  • German Cancer Research Center
  • Heidelberg University 
  • Harvard University
  • University of Cambridge
  • Peking University
  • University of Texas MD Anderson Cancer Center
  • University of Santiago de Compostela
  • University of Vigo
  • Broad Institute
  • Dana-Farber Cancer Institute
  • Ontario Institute for Cancer Research
  • University of California at Los Angeles
  • University of Toronto
  • Peter Maccallum Cancer Centre
  • University of Melbourne
  • Johns Hopkins University
  • Cambridge University Hospitals NHS Foundation Trust
  • Wellcome Trust Genome Campus
  • University of Ottawa
  • Barcelona Supercomputing Center (BSC)
  • Cancer Research UK Cambridge Institute
  • Barcelona Institute of Science and Technology (BIST)
  • Quantitative Genomics Laboratories (qGenomics)
  • University of Queensland
  • Bar-Ilan University
  • Yale University
  • National Institutes of Health
  • University of California Santa Cruz
  • Brandeis University
  • Massachusetts General Hospital
  • Cornell University
  • New York Genome Center
  • Hopp Children’s Cancer Center (KiTZ)
  • Korea Advanced Institute of Science and Technology
  • Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology
  • Russian Academy of Sciences
  • Skolkovo Institute of Science and Technology
  • Seoul National University
  • European Molecular Biology Laboratory

Research output: Contribution to journal › Article › peer-review

113 Citations (Scopus)

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.

Original languageEnglish
Article number733
JournalNature Communications
Volume11
Issue number1
DOIs
Publication statusPublished - 1 Dec 2020

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

OECD Field of Science

  • 3. Medical and Health Sciences

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