Every cancer looks different. Every cancer has similarities to other cancers. And were trying to milk those differences and similarities to do a better job of predicting how things are going to work out and making new drugs.
Harold E. VarmusIn general, all cancers have been traditionally characterized by the way they appear under the microscope and the organs in which they arise.
Harold E. VarmusA cancer is not simply a lung cancer. It doesn't simply have a certain kind of appearance under the microscope or a certain behavior, but it also has a set of changes in the genes or in the molecules that modify gene behavior that allows us to categorize cancers in ways that is very useful in thinking about new ways to control cancer by prevention and treatment.
Harold E. Varmus