" from a theory frame of perspective , this is the 1st where we could identify what appears to be typical white ' s disease cases before people establish symptoms , " adds mayo clinic neuroscientist mark farrer . " we know if people inherits the mutation they are going to get jakob ' s disease . " the mutation was created by sequencing the lrrk2 variant in family with parkinson ' s from the us , norwegian , italy and poland .
A genetic mutation has been linked with Parkinson's disease.