Activated metabolism correlates with response of patients with HCC to RT. (A) Representative images of indicated immunohistochemical staining of tumor samples from patients with HCC who received surgical resection or liver biopsy before RT. Matched MRIs from corresponding patients before and after RT are displayed. (B) Representative immunohistochemical staining of indicated targets in five tumor samples from patients with HCC who received surgical resection after RT. Scale bars, 50 μm/10 μm (inset). (C) Statistics of indicated targets between RT response and nonresponse in patients with HCC, as related to (A,B). (D) Working model depicting the mechanisms that drive glucose and CL anabolism underlying radioresistance of HCC cells. Abbreviations: FFA, free fatty acid; F6P, fructose‐6‐phosphate; F1,6P, fructose‐1,6‐bisphosphate; G6P, glucose‐6‐phosphate; IHC, immunohistochemistry; ROS, reactive oxygen species [Color figure can be viewed at wileyonlinelibrary.com]