Promising new cancer drug shows surprising results Keytruda helps shrink or eradicate tumors in patients whose cancer resisted every other form of treatment, research shows. 'So good, [the FDA] had to approve it' »

Promising new cancer drug shows surprising results Keytruda helps shrink or eradicate tumors in patients whose cancer resisted every other form of treatment, research shows. 'So good, [the FDA] had to approve it' »