CNY 6-year-old with aggressive cancer beating odds with 'superhero' treatment First time I heard of the use of Optune in a 5 year old. I wish him the best of luck! If it works for kids, it would be a miracle, as it doesn't have the side effects associated with many of the chemotherapies. My favorite part of the story is where his mom says he "wakes up every morning smiling and goes to bed at night smiling".