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Distinct Classes of Complex Structural Variation Uncovered across Thousands of Cancer Genome Graphs.

Kevin Hadi | Xiaotong Yao | Julie M Behr | Aditya Deshpande | Charalampos Xanthopoulakis | Huasong Tian | Sarah Kudman | Joel Rosiene | Madison Darmofal | Joseph DeRose | Rick Mortensen | Emily M Adney | Alon Shaiber | Zoran Gajic | Michael Sigouros | Kenneth Eng | Jeremiah A Wala | Kazimierz O WrzeszczyƄski | Kanika Arora | Minita Shah | Anne-Katrin Emde | Vanessa Felice | Mayu O Frank | Robert B Darnell | Mahmoud Ghandi | Franklin Huang | Sally Dewhurst | John Maciejowski | Titia de Lange | Jeremy Setton | Nadeem Riaz | Jorge S Reis-Filho | Simon Powell | David A Knowles | Ed Reznik | Bud Mishra | Rameen Beroukhim | Michael C Zody | Nicolas Robine | Kenji M Oman | Carissa A Sanchez | Mary K Kuhner | Lucian P Smith | Patricia C Galipeau | Thomas G Paulson | Brian J Reid | Xiaohong Li | David Wilkes | Andrea Sboner | Juan Miguel Mosquera | Olivier Elemento | Marcin Imielinski
Cell | 2020

Cancer genomes often harbor hundreds of somatic DNA rearrangement junctions, many of which cannot be easily classified into simple (e.g., deletion) or complex (e.g., chromothripsis) structural variant classes. Applying a novel genome graph computational paradigm to analyze the topology of junction copy number (JCN) across 2,778 tumor whole-genome sequences, we uncovered three novel complex rearrangement phenomena: pyrgo, rigma, and tyfonas. Pyrgo are "towers" of low-JCN duplications associated with early-replicating regions, superenhancers, and breast or ovarian cancers. Rigma comprise "chasms" of low-JCN deletions enriched in late-replicating fragile sites and gastrointestinal carcinomas. Tyfonas are "typhoons" of high-JCN junctions and fold-back inversions associated with expressed protein-coding fusions, breakend hypermutation, and acral, but not cutaneous, melanomas. Clustering of tumors according to genome graph-derived features identified subgroups associated with DNA repair defects and poor prognosis.

Pubmed ID: 33007263 RIS Download

Associated grants

  • Agency: NCATS NIH HHS, United States
    Id: UL1 TR000043
  • Agency: Howard Hughes Medical Institute, United States
  • Agency: NHGRI NIH HHS, United States
    Id: T32 HG002295
  • Agency: NCI NIH HHS, United States
    Id: P01 CA091955
  • Agency: NCI NIH HHS, United States
    Id: P30 CA008748
  • Agency: NINDS NIH HHS, United States
    Id: R35 NS097404
  • Agency: NCI NIH HHS, United States
    Id: P50 CA247749
  • Agency: NCI NIH HHS, United States
    Id: U24 CA210989
  • Agency: NCI NIH HHS, United States
    Id: P30 CA015704
  • Agency: NCI NIH HHS, United States
    Id: U54 CA193313
  • Agency: NCI NIH HHS, United States
    Id: R01 CA194547
  • Agency: NCI NIH HHS, United States
    Id: F31 CA232465
  • Agency: NIGMS NIH HHS, United States
    Id: T32 GM132083

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