AKT1 and nasopharyngeal carcinoma: To investigate whether PI3K-Akt signaling pathway is involved in heterozygous p53-R280T mutation-mediated NPC promotion, we detected the levels of p-AKT in the KO-41, KO-49, and control CNE2 cells by western blot, and observed that p-AKT was significantly decreased in the KO-41 and KO-49 cells relative to control CNE2 cells (Figure 6A).