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. 2020 Aug 25;10:1455. doi: 10.3389/fonc.2020.01455

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Copyright © 2020 Jia, Li, Zhao, Ren, Su, Gao, Li, Zhou, Li and Zhou.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Distribution of sPD-L1 concentrations prior to the initiation of EGFR-TKI treatment according to therapeutic responses. (B) Distribution of sPD-L1 concentrations 1 month after initiating EGFR-TKI treatment according to therapeutic responses. (C) sPD-L1 concentrations at pre-treatment and on-treatment in whole patient group. (D) sPD-L1 concentrations at pre-treatment and on-treatment in patients with PR. (E) sPD-L1 concentrations at pre-treatment and on-treatment in patients with SD or PD (Results are presented as mean ± SD. **P < 0.01; NS, Not Significant).