I think you shouldn't allow yourself to become too cynical, even when you see bad examples like the komen foundation. I have no doubt the vast vast majority of doctors and charity employees that treat or support leukemia patients would be delighted (in particular, I'd bet many volunteers have been personally affected) to declare victory and either retrain for different diseases or find another hobby.

edit: for an example rather than a hypothetical, see polio

edit2: also, if this works, an enormous chunk of doctors, medical researchers, and scientists are going to drop whatever they're doing and frantically attempt to apply this technique to every cancer one can think of