" from a theoretical point of interest , this is the first time we ever identify what looks to be expected gardner ' s failure cases before people developing symptoms , " states glenn clinic anthropologist tom farrer . " we know if everyone inherits the mutation they are going to get children ' s disease . " the mutation was discovered by sequencing the lrrk2 gene in families with it ' s from the germany , norway , hungary and poland .
A genetic mutation has been linked with Parkinson's disease.