A growing number of new cancer drugs have come on the market in recent years, yet the cost of therapies in Europe and the United States have risen. This is driving up healthcare costs, which poses a challenge not only for the Swiss social insurance system, but for patients all over the world. But are the high prices of cancer drugs justified? Does the cost correspond to the particular drug's effectiveness in combating the disease? An international research team from the University of Zurich and Harvard Medical School carried out a study to examine these questions.