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. 2021 Aug 21;21:943. doi: 10.1186/s12885-021-08687-7

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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. 5 — Analysis of the high- and low-risk populations by PCA and ssGSEA in the TCGA-BLCA cohort. (a, b, c) PCA between high- and low-risk groups is conducted based on the whole protein coding gene, FRG, and 7-FRG signature sets. (d, e) Comparison of the ssGSEA scores of 16 immune cells and 13 immune-related functions between different risk groups in the TCGA cohort. (“ns” means they are not significant; *, P < 0.05; **, P < 0.01; ***, P < 0.001)