A novel biomarker associated with EBV infection improves response prediction of immunotherapy in gastric cancer.

"Declarations Ethics approval and consent to participateAll the protocols were approved by the Ethical Committee of the Affiliated Hospital of Jiangsu University (KY2021K0908). All subjects provided a written consent form. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The study was funded by Innovation Funds From Chinese Society Of Clinical Oncology Youth Committee (Y-Young2021-01074), China Postdoctoral Science Foundation (2021M693272), Science and Technology Planning Social Development Project of Zhenjiang City (SH2022047), Medical Education Collaborative Innovation Fund from Jiangsu University (JDY2022003), Elderly Health Research Project of Jiangsu Province (LKM2022031), and the Guiding Science and Technology Plan Project for Social Development of Zhenjiang Heath Commission (FZ2020031)."