For example, KRAS mutations were common in LADC (27.6%) while its frequency was significantly lower in LUSC (5.6%, P < 0.001, FDR = 0.010) and absent in SCLC (0.0%, P < 0.001, FDR = 0.009) (Figure 1B–E, Table S2, Supporting Information). Here, KRAS is linked to small cell lung carcinoma.