Not sure about any details.
'Get Started - See if you qualify'.
It only mentions the following information about the trial"We're inviting you to take part in a study for individuals who are diagnosed with Parkinson's Disease to evaluate the effect of the investigational drug on treating the symptoms associated with the condition. All study-related visits, tests, care, and study drug will be provided at no cost. In addition, compensation for study-related travel may be provided. Health insurance is not required to participate."
If you like to fill their database ...