“There’s a 60-year-old woman in Tokyo. She was at the University of Tokyo. She had been diagnosed with leukemia six years ago. She was living, but not healthy. So the University of Tokyo ran her genomic sequence through Watson and it was able to ascertain that they were off by one thing. Actually, she had two strains of leukemia. The did treat her and she is healthy.”

He added, “That’s one example. Statistically, we’re seeing that about one third of the time, Watson is proposing an additional diagnosis.”

Source: How IBM Watson saved the life of a woman dying from cancer, exec says – Business Insider

Unfortunately he then goes on to say how great Watson is at pushing ads at you.