Mechanisms
In the last decades, much research has been looking at the mechanisms how tumors grow and defeat the body. This led to the development of biological therapies that specifically target those mechanisms and molecules vital to the tumor.
Many targeted therapies have now been developed ranging from small molecules that enter the cancer cell to disrupt its inner workings, to larger ones that eliminate cancer cells binding them from the outside (e.g., monoclonal antibodies ).
According to their mechanisms of action, targeted therapies can be divided into three main groups, those that: