KRAS mutations are found in approximately 20%–25% of lung cancer cases in the Western countries (Dogan et al., 2012; Shepherd et al., 2013; El Osta et al., 2019) and 10%–15% of lung cancer cases in Asian countries (Dearden et al., 2013; Yoshizawa et al., 2013). This evidence concerns the gene KRAS and lung carcinoma.