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. 2017 Jul 3;3:24. doi: 10.1038/s41523-017-0028-4

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© The Author(s) 2017

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Kaplan–Meier plot: disease-free survival stratified by presence of tumor mutation in plasma. Four patients from this study who had mutation identified from plasma samples relapsed rapidly (0.3, 4.0, 5.3, and 8.9 months). The yellow line represents patients with detectable ctDNA in plasma. The blue line represents patients with no detectable ctDNA in plasma.The difference in median DFS between patients with detectable ctDNA vs. those without was statistically significant (p < 0.0001, median DFS: 4.6 mos. vs. NR; HR = 12.6, 95% CI: 3.06-52.2)