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. 2022 Aug 23;20:268. doi: 10.1186/s12916-022-02463-5

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© The Author(s) 2022

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. 4 — The combinations of biological and radiological responses refine risk groupings. A Bar plot showing the C-index and 95% CI for predicting the 5-year DFS by five models incorporating pretreatment risk factors with/without ctDNA and on-treatment parameters using the CpH method. B Nomogram for predicting the 3- and 5-year DFS, which integrated conventional pretreatment risk factors with pretreatment ctDNA, radiological and ctDNA-based response phenotypes, and therapeutic information. The total point values were independently calculated and then applied to the corresponding probability scale. C Calibration plots showing the actual risk probability by decile (y-axis) over the nomogram-predicted risk probability (x-axis). Abbreviations: cBR, complete biological response; cfEBV DNA, cell-free Epstein-Barr virus DNA; CR, complete response; DFS, disease-free survival; non-cBR, non-complete biological response; PD, progression disease; PR, partial responses; SD, stable disease