We observed that sex, smoking, LUAD, and adenocarcinoma tissue (T) classification significantly differed between EGFR-negative and -positive patients (female vs. male: 84.2% vs. 46.8%, p < 0.001; smoking: 74.3% vs. 31.0%, p < 0.001; LUAD: 46.7% vs. 97.9%, p < 0.001; T classification: p = 0.003). Here, EGFR is linked to adenocarcinoma.