Retracted ========= Response to targeted therapy or chemotherapy following immunotherapy in patients with gastrointestinal cancers - a case series Alsuwaigh R, Lee J, Chan G, Chee CE, Choo SP. *J Immunother Cancer* 2019;7:162. doi: 10.1186/s40425-019-0637-6 PMID: 31248458 The authors have retracted this article because of confidentiality obligations. The article content has been removed for legal reasons. All authors agree to this retraction. * © Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. [http://creativecommons.org/licenses/by-nc/4.0/](http://creativecommons.org/licenses/by-nc/4.0/) 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/](http://creativecommons.org/licenses/by-nc/4.0/).