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Effect of radiotherapy on serum SAA1 in nasopharyngeal carcinoma patients. (A) The scatter plot shows SAA1 concentration before radiotherapy and corresponding expression after radiotherapy in 17 patients with nasopharyngeal carcinoma (****, P<0.0001). (B) ROC curve of SAA1 as a biomarker for predicting radiation exposure in patients with nasopharyngeal carcinoma. SAA1, serum amyloid A1.
