BRCA1 and lung cancer: Other noteworthy cancer-related genes that have been extensively studied include breast cancer type 1 susceptibility protein (BRCA1) and breast cancer type 2 susceptibility protein (BRCA2), adenomatous polyposis coli (APC), and epidermal growth factor receptor (EGFR) in various types of breast, colorectal, and lung cancer, respectively [8–10].