" from a research front of view , this is the first one we better identify whoever appears to be classic parkinson ' s disease cases before people develop it , " asserts mayo clinic neuroscientist matthew jeffress . " we know if something inherits the mutant they are going to getting parkinson ' s disorder . " the mutation was discovery by sequencing the lrrk2 gene in families with parkinson ' s from the americans , norway , india and norway .
A genetic mutation has been linked with Parkinson's disease.