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. 2020 Feb 17;20:59. doi: 10.1186/s12883-020-01640-4

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© The Author(s) 2020

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 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.

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Fig. 3 — Kaplan-Meier survival analysis for patients with low-grade gliomas^a. The figure shows comparisons of (a) PFS between high and low HLA-E expression group in LGG patients (p = 0.018); (b) OS between the two subgroups in LGG patients (p = 0.020); (c) PFS between the two subgroups in patients with diffuse astrocytomas (p = 0.128); (d) OS between the two subgroups patients with diffuse astrocytomas (p = 0.080); (e) PFS between the two subgroups in patients with oligodendrogliomas (p = 0.026); (f) OS between the two subgroups patients with oligodendrogliomas (p = 0.028). PFS, progression-free survival; OS, overall survival. ^aResults of Log-rank test.