Pan-cancer analysis of whole genomes identifies driver rearrangements promoted by LINE-1 retrotransposition

PCAWG Structural Variation Working Group, PCAWG Consortium

Research output: Contribution to journalArticlepeer-review

272 Scopus citations

Abstract

About half of all cancers have somatic integrations of retrotransposons. Here, to characterize their role in oncogenesis, we analyzed the patterns and mechanisms of somatic retrotransposition in 2,954 cancer genomes from 38 histological cancer subtypes within the framework of the Pan-Cancer Analysis of Whole Genomes (PCAWG) project. We identified 19,166 somatically acquired retrotransposition events, which affected 35% of samples and spanned a range of event types. Long interspersed nuclear element (LINE-1; L1 hereafter) insertions emerged as the first most frequent type of somatic structural variation in esophageal adenocarcinoma, and the second most frequent in head-and-neck and colorectal cancers. Aberrant L1 integrations can delete megabase-scale regions of a chromosome, which sometimes leads to the removal of tumor-suppressor genes, and can induce complex translocations and large-scale duplications. Somatic retrotranspositions can also initiate breakage–fusion–bridge cycles, leading to high-level amplification of oncogenes. These observations illuminate a relevant role of L1 retrotransposition in remodeling the cancer genome, with potential implications for the development of human tumors.

Original languageEnglish
Pages (from-to)306-319
Number of pages14
JournalNature Genetics
Volume52
Issue number3
DOIs
StatePublished - 1 Mar 2020

Funding

FundersFunder number
Associazione Italiana Contro le Leucemie-Linfomi e Mieloma
CERCA Programme of the Catalan Government
Cancer Research UKK01AG051791, C57387/ A21777
Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia
H2020 European Research Council
Korea Health Industry Development Institute
Marie Skłodowska-Curie703594-DECODE
Ministerio de Economía y CompetitividadSAF2015-66368-P, SAF2015-73916-JIN
Ministerio de Educación, Cultura y Deporte
National Institutes of HealthU24CA210978, R01 CA172652, R01CA188228, U41 HG007497
Sundhed og Sygdom, Det Frie ForskningsrådDFF-4183-00233
National Cancer InstituteP30CA016672
National Institute of General Medical SciencesR01GM124531, 1R01GM099875, PN013600, 09805, P50GM107632, R01CA163705
American Heart Association17IF33890015
European Molecular Biology OrganizationALTF 755-2014
Li Ka Shing Foundation
Wellcome Trust
Francis Crick InstituteFC001202
Horizon 2020 Framework Programme716290
Medical Research Council
National Institute for Health Research
European CommissionRYC-2014-14999
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungP2ELP3_155365
Fonds Wetenschappelijk Onderzoek
Ministry of Health and WelfareHI16C2387
Associazione Italiana per la Ricerca sul Cancro17658
Associazione Italiana Contro le Leucemie - Linfomi e Mieloma
European Regional Development FundED431F 2016/019, BFU2016-78121-P, BFU2013-41554-P
Ministerio de Economía, Industria y Competitividad, Gobierno de España
Xunta de Galicia757700, ED481A-2017/306, BFU2017-89833-P, ED481A-2016/151, ED481A-2018/199, ED481A-2017/299
Agencia Estatal de Investigación

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