Immune system, unleashed by cancer therapies, can attack organs

In cancer clinics around the world, and in drug trials, myriad other side effects are showing up. Studies are finding that severe reactions occur nearly 20 percent of the time with certain drugs, and in more than half of patients when some drugs are used in combination. Now doctors believe immunotherapy may be causing a new type of acute-onset diabetes, with at least 17 cases so far.