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. 2021 May 31;21:644. doi: 10.1186/s12885-021-08318-1

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© The Author(s) 2021

Open AccessThis 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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — The results of DEGs analyses in GSE62931, GSE115275 and TCGA cohort. a Boxplot of tumor purity in TCGA, GES115275 and GES62931. b Histograms of tissues’ tumor purity. PCA plot of c GSE115275, d normal and TNBC samples from TCGA, e GSE62931, f non-TNBC and TNBC samples from TCGA. Volcano plot of g GSE115275, h normal and TNBC samples from TCGA, (i) GSE62931, (j) non-TNBC and TNBC samples from TCGA. Upregulated genes and downregulated genes are represented by red and blue dots in the volcano map, however, the genes having no obvious difference are represented by gray. Heatmap of (k) GSE115275, (l) normal and TNBC samples from TCGA, (m) GSE62931, (n) non-TNBC and TNBC samples from TCGA