Sensitivity and specificity of USP5 and EphA2 combination (a panel) in discriminating radiosensitive from radioresistant NPCs are significantly higher than those of individual protein (Fig. S8, and Table S4), indicating that USP5 and EphA2 might serve as a biomarker for predicting NPC radiosensitivity. Here, USP5 is linked to nasopharyngeal carcinoma.