Data collection: taking “non-small cell lung cancer” as key word to retrieve and gain NSCLC-related gene from database of OMIM (Online Mendelian Inheritance in Man) (Rashbass, 1995), COSMIC (Catalogue of Somatic Mutations in Cancer) (Forbes et al., 2011) and GAD (The Genetic Association Database) (Becker, Barnes, Bright, & Wang, 2004).