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A pan-cancer compendium of chromosomal instability
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Journal Article
A pan-cancer compendium of chromosomal instability
2022
Overview
Chromosomal instability (CIN) results in the accumulation of large-scale losses, gains and rearrangements of DNA
1
. The broad genomic complexity caused by CIN is a hallmark of cancer
2
; however, there is no systematic framework to measure different types of CIN and their effect on clinical phenotypes pan-cancer. Here we evaluate the extent, diversity and origin of CIN across 7,880 tumours representing 33 cancer types. We present a compendium of 17 copy number signatures that characterize specific types of CIN, with putative aetiologies supported by multiple independent data sources. The signatures predict drug response and identify new drug targets. Our framework refines the understanding of impaired homologous recombination, which is one of the most therapeutically targetable types of CIN. Our results illuminate a fundamental structure underlying genomic complexity in human cancers and provide a resource to guide future CIN research.
Copy number signatures characterize different types of chromosomal instability and predict drug response.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
