NRAS and lung adenocarcinoma: Based on somatic mutations detected by sorted cell sequencing, TP53, EGFR, PTEN, RB1, KRAS, CTNNB1, GNAQ, SMAD4, IDH1, CDKN2A, APC, PIK3CA, HRAS, and NRAS were observed significantly in 22 lung adenocarcinomas (Fig. 5).