KRAS and metastatic malignant neoplasm in the lymph nodes: Due to the mutations of KRAS and EGFR in NSCLC are mutually exclusive, we divided our LUAD patients into WT and MT EGFR subgroups and found that the T allele of rs8193036 was only correlated with an advanced stage and lymph node metastasis in LUAD patients harboring the WT EGFR.