New Scientist is carrying this update on developments in treatments for Parkinson's syndrome. By using an engineered virus, researchers were able to use gene treatments to help otherwise unresponsive patients to experience significant gains in mobility and motor control. The results are preliminary, early, and utilized (what seems to be to be) a small number of patients. But progress is progress, and this sure looks like it.
Using an engineered virus. We really are living science fiction.