PDGeneration: Mapping the Future of Parkinson's Disease

Inclusion Criteria: 1. Meet Movement Disorder Society (MDS) Clinical Diagnostic Criteria for Parkinson's Disease: probable diagnosis. 2. Willingness to undergo genetic testing, and choose to be informed of genetic testing results for Glucosylceramidase Beta (GBA), LRRK2 and 5 additional PD related genes (SNCA, VPS35, PRKN, PINK-1, PARK7). 3. Capacity to give full informed consent in writing, and have read and signed the informed consent forms (ICFs) based on clinician's determination. 4. Able to perform study activities (including completion of either online, in-person or paper surveys). 5. Individuals must speak and understand the language of the informed consent. Exclusion Criteria: 1. Diagnosis of an atypical parkinsonian disorder (i.e., multiple system atrophy, progressive supranuclear palsy, dementia with Lewy bodies, corticobasal syndrome), including that due to medications, metabolic disorders, encephalitis, cerebrovascular disease, or normal pressure hydrocephalus. 2. Individuals who have received a blood transfusion within the past 3 months. 3. Individuals who have active hematologic malignancies such as lymphoma or leukemia. 4. Individuals who have had a bone marrow transplant within the past 5 years.