%0 Journal Article
%@ 1474-760X
%A Loennstedt, Ingrid M
%A Caramia, Franco
%A Li, Jason
%A Fumagalli, Debora
%A Salgado, Roberto
%A Rowan, Andrew
%A Salm, Max
%A Kanu, Nnennaya
%A Savas, Peter
%A Horswell, Stuart
%A Gade, Stephan
%A Loibl, Sibylle
%A Neven, Patrick
%A Sotiriou, Christos
%A Swanton, Charles
%A Loi, Sherene
%A Speed, Terence P
%D 2014
%F discovery:10205418
%I BMC
%J Genome Biology
%K Science & Technology, Life Sciences & Biomedicine, Biotechnology & Applied Microbiology, Genetics & Heredity, COPY NUMBER ANALYSIS, EVOLUTION, HETEROGENEITY, MUTATIONS, ALIGNMENT, CANCER, TOOL
%N 9
%T Deciphering clonality in aneuploid breast tumors using SNP array and sequencing data
%U https://discovery.ucl.ac.uk/id/eprint/10205418/
%V 15
%X Intra-tumor heterogeneity concerns the existence of genetically different subclones within the same tumor. Single sample quantification of heterogeneity relies on precise determination of chromosomal copy numbers throughout the genome, and an assessment of whether identified mutation variant allele fractions match clonal or subclonal copy numbers. We discuss these issues using data from SNP arrays, whole exome sequencing and pathologist purity estimates on several breast cancers characterized by ERBB2 amplification. We show that chromosomal copy numbers can only be estimated from SNP array signals or sequencing depths for subclonal tumor samples with simple subclonal architectures under certain assumptions.
%Z Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.    The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.    To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.