Genetic and epigenetic variation at regulatory regions contribute to cancer evolution under endocrine treatment

Study ID Alternative Stable ID Type
EGAS00001006340 Other

Study Description

Comprehensive profiling of hormone-dependent breast cancer (HDBC) has identified hundreds of protein-coding alterations contributing to cancer initiation, but only a handful have been linked to endocrine therapy resistance, potentially contributing to 40% of relapses. If other mechanisms underlie the evolution of HDBC under adjuvant therapy is currently unknown. In this work, we employ integrative functional genomics to dissect the contribution of cis-regulatory elements (CREs) to cancer evolution by focusing on 12 megabases of non-coding DNA, including clonal enhancers, gene promoters, and boundaries of topologically associating domains. Massive parallel perturbation in vitro reveals context-dependent roles for many of these CREs, with a specific impact on dormancy entrance and endocrine therapy resistance9. Profiling of CRE somatic alterations in a unique, longitudinal cohort of patients treated with endocrine therapies identifies non-coding changes involved in therapy resistance. Overall, our data uncover actionable transient transcriptional programs critical for dormant ... (Show More)

Study Datasets 1 dataset.

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Dataset ID Description Technology Samples
Profiling of 12 megabases of human non-coding DNA (including enhancers, promoters, and boundaries of topologically associating domains) in a longitudinal cohort of patients treated with endocrine therapies. For each patient, DNA from the primary and relapsed (metastatic) tumour, along with normal matched DNA, were profiled.
Illumina HiSeq 4000,Illumina NovaSeq 6000 300

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