Immune-mediated tumor regression and subsequent escape driven by antigen loss and major histocompatibility complex (MHC) class I downregulation following GPC3 DNA vaccination in hepatocellular carcinoma - Li, Hang; Wang, Xudong; Yan, Zhentao; Weng, Siyuan; Kang, Wendi; Xi, Junqing; Yang, Zhengqiang (HepatoBiliary Surgery and Nutrition, 2026)