" from a researcher point of view , this is the first time we could identify what appears to be typical parkinson ' s disorder problems before people develop symptoms , " states mayo clinic neuroscientist jonathan sydenham . " we suspect if someone inherits the mutation they are going to get parkinson ' s disorders . " the mutation was discovered by sequencing the lrrk2 gene in families with parkinson ' s from the germany , norway , ireland and poland .
A genetic mutation has been linked with Parkinson's disease.