Researchers have been able to develop drugs that target gene changes in cell that causes cancer. Treatment with these drugs is often called Targeted Therapy. Targeted Therapy drugs work in a different manner thanChemotherapy. They are often able to attack cancer cells while doing less damage to normal cells. Targeted therapies are a major focus of Cancer Research Today. It is used to keep cancer from growing and spreading. Thery disrupt the process of Carcinogenesis.