Acknowledgements
We wish to thank the patients and their families for their participation in the study. We thank Sara Danielli, Valerie Jakrot and Michelle Peranec for their assistance in storage and retrieval of specimens. This work was presented in part at the 19th Cambridge Immunology Forum, Cambridge, United Kingdom, the 6thImmunotherapy of Cancer Conference, Vienna, Austria, the 2019 British Society of Immunology Oxford Immunology Symposium, Oxford, United Kingdom, the European Society for Medical Oncology annual congress, Barcelona, Spain and the 2019 British Society of Immunology Congress, Liverpool, United Kingdom.