SLC7A11 and nasopharyngeal carcinoma: To investigate whether EGFR regulates the SLC7A11 expression in NPC in a manner linked to tyrosine kinase activation, SUNE1 and 6-10B cells were pre-treated with epidermal growth factor (EGF) and then exposed to varied concentrations of EGFR-tyrosine kinase inhibitor gefitinib.