circRNA meets gene amplification.

Lung cancer remains the most common cause of cancer related death among both males and females globally accounting for 1.69 million deaths in 2015 (1). Of the different types of lung cancer, lung adenocarcinoma (LAC) is the most common (2). Given the prevalence and lethality of lung cancer the need to elucidate the mechanisms of this disease and to develop novel therapeutic targets remains paramount. The understanding of the biology and genetics of LAC is essential to learning more about this disease.