Of the 46 EGFR-mutated NSCLC tumor specimens for the first- and second-generation EGFR-TKIs, high, intermediate, low, and no AXL expression was observed in 12 (26.1%), eight (17.4%), 23 (50.0%), and three (6.5%) specimens, respectively. The gene discussed is EGFR; the disease is non-small cell lung carcinoma.