Gene therapy into brain helps kid with rare disease

Scientists say delivering gene therapy directly to the brain holds great promise. The first brain-delivered gene therapy on the market was recently approved in Europe and the U.K. for a rare genetic disorder called AADC deficiency. (Jan. 24) (AP video: Tassanee Vejpongsa, Tian Macleod Ji and Michael Hill/Production: Shelby Lum)