Title
Chromosomal imbalances detected via RNA-sequencing in 28 cancers
Abstract
Motivation: RNA-sequencing (RNA-seq) of tumor tissue is typically only used to measure gene expression. Here, we present a statistical approach that leverages existing RNA-seq data to also detect somatic copy number alterations (SCNAs), a pervasive phenomenon in human cancers, without a need to sequence the corresponding DNA. Results: We present an analysis of 4942 participant samples from 28 cancers in The Cancer Genome Atlas (TCGA), demonstrating robust detection of SCNAs from RNA-seq. Using genotype imputation and haplotype information, our RNA-based method had a median sensitivity of 85% to detect SCNAs defined by DNA analysis, at high specificity (similar to 95%). As an example of translational potential, we successfully replicated SCNA features associated with breast cancer subtypes. Our results credential haplotype-based inference based on RNA-seq to detect SCNAs in clinical and population-based settings.
Year
DOI
Venue
2022
10.1093/bioinformatics/btab861
BIOINFORMATICS
DocType
Volume
Issue
Journal
38
6
ISSN
Citations 
PageRank 
1367-4803
0
0.34
References 
Authors
0
8