CDKN2A and squamous cell lung carcinoma: For squamous cell lung cancer (SQCLC), mutations generally occur in PRKCA, PKN1, FGF, FGFR1, FGF3, MYC, CDKN2A, RB1, TP53, CDKN2A, NOTCH1, MLL2, and NFE2L2 genes [6,27].