The onslaught of recent interesting early pre-clinical and clinical research continued today with the release of these two studies"

An experimental treatment to help Parkinson's patients respond to medication better appears to be working

Voyager has created an enzyme, AADC, which allows the brain to continue to convert l-dopa into dopamine, even as the brain cells die off. It involves a one time surgery inserting the gene therapy into the putamen.

Voyager Therapeutics Parkinson's disease gene therapy shows progress - Business Insider

I'll post the other study on a separate thread.