" from a research point of seen , this is the first one we had analyze the occurs to be typical parkinson ' s disorder cases before people develop symptoms , " says mayo clinic neuroscientist matthew paget . " we know if someone inherits the mutation they are going to get parkinson ' s disease . " the mutation was revealed by sequencing the lrrk2 genome in families with d ' s from the us , norway , ireland and poland .
A genetic mutation has been linked with Parkinson's disease.