We first evaluated the basic level of autophagy in six NPC cell lines (CNE1, CNE2, 6-10B, 5-8F, SUNE1, and HONE1) by immunoblotting with antibodies against autophagy proteins LC3-II and Beclin1, and autophagy substrate, p62. Here, BECN1 is linked to nasopharyngeal carcinoma.