Previous research has consistently linked EGFR mutations with female gender, non-smoking status, and adenocarcinoma histology (Chang et al., 2018; Chapman et al., 2016; Duma, Santana-Davila & Molina, 2019; Jemal et al., 2018; Kawaguchi et al., 2016; Shi et al., 2014); however, gender was not retained in our final logistic regression model. This evidence concerns the gene EGFR and adenocarcinoma.