The theory behind this is fairly well demostrated in animal models so I would be more confident in this than in some other novel treatments. On the other hand,

The theory behind this is fairly well demostrated in animal models so I would be more confident in this than in some other novel treatments. On the other hand, "The patient was one of nine with metastatic melanoma, that is skin cancer that has spread, who were being treated in a recently completed clinical trial to test bigger and bigger doses of their own white blood cells." Nine patients and yet we are only hearing about one of them.