There is a cure, yes. The treatment lasts between 4 to 8 weeks, and it's a series of injections that are genetically engineered so that it's personalized to each specific patient. There are some side effects (severe headaches, nausea, extreme vertigo, all-over body aches and so on), so each injection would then require a 12-hour period of observation by Dr. Cuddy. It's not as quick or as easy as a cancer treatment (they typically take 24 hours to engineer, and 12 hours after injection to take effect, and side effects are minimal) but it works.
So your Someone will need to provide a series of genetic samples, and then once I get the injections back from the lab at work, they'll have to make good friends with Dr. Cuddy.