Mutation Linked to Some Cases of Parkinson's : Identifying gene raises ethical questions about its use in testing, given the lack of preventive therapy.

Dr. Brice noted that identification of the gene and the mutation should lead to a better understanding of the pathologic mechanism underlying Parkinson's disease, which will “hopefully lead to new treatments,” he said. “The last page on the genetic basis of Parkinson's disease is yet to be written, and it promises to be very exciting.”