" from a research point of opinion , this is the first time we could identification why seem to be average parkinson ' s disease incidents before people develop symptoms , " says chicago clinic neuroscientist david farrer . " we say if something inherits the gene they are bound to get parkinson ' s disease . " the gene was discovered by sequencing the lrrk2 chromosome in families with parkinson ' s from the region , finland , ireland and poland .
A genetic mutation has been linked with Parkinson's disease.