The rapid expansion of novel technologies in cancer research over the past several years has led to a dramatically improved understanding of the molecular biology of lung cancer. As a consequence, novel targeted therapies are rapidly being developed. In this review, we summarize the most important molecular pathways in lung cancer and describe the clinical evidence for the development of therapies against these targets.
Keywords: lung cancer, targeted therapy, EGFR, VEGF
IntroductionWith an estimated 222,000 new cases and an estimated 157,000 deaths in the United States for the year 2010, lung cancer remains the most deadly malignancy and accounts for as many deaths as colon, breast, and prostate cancers combined [Jemal et al. 2010]. Lung-cancer-specific survival rates, however, have improved slightly since the 1990s [Owonikoko, 2010], which gives us reason to hope that better understanding of the underlying molecular etiology of lung cancer and the development of better treatment approaches including targeted therapies will have a growing clinical impact. In this review, we describe the most relevant molecular and biochemical pathway alterations in lung cancer and review the clinical evidence of novel therapies aimed at those molecular targets.