TGFB1 and nasopharyngeal carcinoma: A previous study demonstrated that SRGN can induce an epithelial–mesenchymal transition (EMT) in nasopharyngeal carcinoma cells12 and the cytokine transforming growth factor β (TGFβ) is known to trigger the EMT process.15 In addition, the E-cadherin to N-cadherin switch is a biomarker for EMT.