AV 412 is a potent inhibitor of human epidermal growth factor family receptor tyrosine kinases (TKIs) and represents a growing class of anti-cancer agents. The recent introduction of TKIs has opened the door to new approaches to cancer treatment in which the goals of therapy are to halt disease progression, ameliorate symptoms, and improve patient quality of life. AV412 may inhibit growth of solid tumors, with fewer and less debilitating side effects.