Targeted therapy is the foundation of precision
medicine. It is a type of cancer treatment that targets the changes in cancer
cells that help them grow, divide, and spread. As researchers learn more about
the cell changes that drive cancer, they are better able to design promising
therapies that target these changes or block their effects.Some targeted
therapies block (inhibit) enzymes that are signals for cancer cells to grow.
These drugs are called enzyme inhibitors. Blocking these cell signals can keep
the cancer from getting bigger and spreading. So even if the tumor is not
getting smaller, its out-of-control growth has been interrupted.