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. 2021 Mar 25;9(3):e001504. doi: 10.1136/jitc-2020-001504

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See http://creativecommons.org/licenses/by-nc/4.0/.

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(A) Plasma ctDNA change at the first follow-up blood sampling according to the response to pembrolizumab±chemotherapy. (B) Plasma ctDNA change at the first follow-up according to whether the progression-free survival (PFS) was ≥6 months or <6 months to pembrolizumab±chemotherapy. Y-axis is truncated at 100%. AF, allele fraction; ctDNA, circulating tumor DNA.