Blackfeather said: ".... an aggegation of alpha synuclean in the brain results in PD."

It is my understanding that this has not (yet) been proven, although it is fairly safe to say that an aggregation of alpha synuclein in the brain is associated with PD.

As Tupelo3 said: "Let's just hope that it actually has efficacy."

IMHO, they might end up (eventually) finding that PD results in an aggregation of alpha synuclein in the brain, rather then an aggregation of alpha synuclein in the brain results in PD.