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. 2021 Dec 6;9(12):e003334. doi: 10.1136/jitc-2021-003334

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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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Study workflow. BTC, biliary tract cancer; CBR, clinical benefit response; HCC, hepatocellular carcinoma; NCB, non-clinical benefit; OS, overall survival; PD-1, programmed cell death protein 1; PFS, progression-free survival.