To corroborate the above genome-wide findings, five representative ESCC cells were chosen to investigate Gln-dependency: TE7 (WT Fbxo4, cyclin D1P287A), TE8 (WT Fbxo4, WT cyclin D1, Akt hyperactivation), TE10 (Fbxo4 S8R, WT cyclin D1), TE15 (WT Fbxo4, WT cyclin D1), and TE1 (Rb deficient). This evidence concerns the gene CCND1 and esophageal squamous cell carcinoma.