NCT04477785Recruiting
PPMI Clinical - Establishing a Deeply Phenotyped PD Cohort
The Parkinson's Progression Markers Initiative (PPMI) Clinical - Establishing a Deeply Phenotyped PD Cohort
Source: ClinicalTrials.gov · Last updated 27 Jul 2026
Brief summary (registry, in English)
The Parkinson Progression Marker Initiative (PPMI) is a longitudinal, observational, multi-center natural history study to assess progression of clinical features, digital outcomes, and imaging, biologic and genetic markers of Parkinson's disease (PD) progression in study participants with manifest PD, prodromal PD, and healthy controls. The overall goal of PPMI is to identify markers of disease progression for use in clinical trials of therapies to reduce progression of PD disability.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 4500 (estimated)
- First submitted
- 15 Jul 2020
- Start date
- 1 Jul 2020
- Primary completion date
- 31 Dec 2033
- Lead sponsor
- Michael J. Fox Foundation for Parkinson's Research
- Diseases
- Parkinson disease
- NCT number
- NCT04477785
What you commit to
- Study type: Observational
- Planned participants: 4500
- From 1 Jul 2020 to the primary completion date, 31 Dec 2033
- 50 sites in 12 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Criteria the registry did not label
- 7.1 Healthy Controls (HC) Note: Active Healthy controls previously enrolled in PPMI do not require re-assessment of eligibility criteria listed below for enrollment in PPMI Clinical. Active participants do need to be able to provide informed consent for PPMI Clinical participation (includes use of a designated research proxy).
- 7.1.1 Inclusion Criteria (HC)
- Male or female age 57 years or older at Screening visit.
- Individuals taking any of the following drugs: alpha methyldopa, methylphenidate, amphetamine derivatives or modafinil, must be willing and medically able to hold the medication for at least 5 half-lives before SPECT imaging.
- Confirmation that participant is eligible based on Screening SPECT imaging.
- Able to provide informed consent.
- Either is male, or is female and meets additional criteria below, as applicable:
- Female of childbearing potential who is not pregnant, lactating, or planning pregnancy during the study and has a negative pregnancy test on day of Screening SPECT imaging test prior to injection of DaTscanTM.
- 7.1.2 Exclusion Criteria (HC)
- First degree relative with PD (i.e., biologic parent, sibling, child).
- Current or active clinically significant neurological disorder (in the opinion of the Investigator).
- Previously obtained MRI scan with evidence of clinically significant neurological disorder (in the opinion of the Investigator).
- Received any of the following drugs: dopamine receptor blockers (neuroleptics), metoclopramide and reserpine within 6 months of Screening visit.
- Current treatment with anticoagulants (e.g., coumadin, heparin, oral thrombin inhibitors) that might preclude safe completion of the lumbar puncture.
- Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
- Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
- Any other reason that, in the opinion of the investigator, would render the participant unsuitable for study enrollment.
- 7.2 Parkinson's Disease (PD) Note: Active PD participants previously enrolled in PPMI do not require re-assessment of eligibility criteria listed below for enrollment in PPMI Clinical. Active participants do need to be able to provide informed consent for PPMI Clinical participation (includes use of a designated research proxy).
- 7.2.1 Inclusion Criteria (PD)
- Male or female age 30 years or older at Screening Visit.
- A diagnosis of Parkinson's disease for 2 years or less at Screening Visit.
- Not expected to require PD medication within at least 6 months from Baseline.
- Patients must have at least two of the following: resting tremor, bradykinesia, rigidity (must have either resting tremor or bradykinesia); OR either asymmetric resting tremor or asymmetric bradykinesia.
- Hoehn and Yahr stage I or II at Baseline.
- Individuals taking any of the following drugs: alpha methyldopa, methylphenidate, amphetamine derivatives or modafinil, must be willing and medically able to hold the medication for at least 5 half-lives before SPECT imaging.
- Confirmation that participant is eligible based on Screening SPECT imaging.
- Able to provide informed consent.
- Either is male, or is female and meets additional criteria below, as applicable:
- Female of childbearing potential who is not pregnant, lactating, or planning pregnancy during the study and has a negative pregnancy test on day of Screening SPECT imaging test prior to injection of DaTscanTM.
- 7.2.2 Exclusion Criteria (PD)
- Currently taking levodopa, dopamine agonists, MAO-B inhibitors, amantadine or another PD medication, except for low-dose treatment of restless leg syndrome (with permission of medical monitor).
- Has taken levodopa, dopamine agonists, MAO-B inhibitors or amantadine within 60 days of Baseline visit.
- Has taken levodopa or dopamine agonists prior to Baseline visit for more than a total of 90 days.
- Atypical PD syndromes due to either drugs (e.g., metoclopramide, flunarizine, neuroleptics) or metabolic disorders (e.g., Wilson's disease), encephalitis, or degenerative diseases (e.g., progressive supranuclear palsy).
- A clinical diagnosis of dementia as determined by the investigator.
- Previously obtained MRI scan with evidence of clinically significant neurological disorder (in the opinion of the Investigator).
- Received any of the following drugs: dopamine receptor blockers (neuroleptics), metoclopramide and reserpine within 6 months of Screening visit.
- Current treatment with anticoagulants (e.g., coumadin, heparin, oral thrombin inhibitors) that might preclude safe completion of the lumbar puncture.
- Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
- Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
- Any other reason that, in the opinion of the investigator, would render the participant unsuitable for study enrollment.
- 7.3 Parkinson's Disease (PD) with LRRK2 or GBA variant Note: Active PD participants previously enrolled in PPMI do not require re-assessment of eligibility criteria listed below for enrollment in PPMI Clinical. Active participants do need to be able to provide informed consent for PPMI Clinical participation (includes use of a designated research proxy).
- 7.3.1 Inclusion Criteria (PD ¬- LRRK2 or GBA)
- Male or female age 30 years or older at Screening Visit.
- A diagnosis of Parkinson's disease for 2 years or less at Screening Visit.
- Patients must have at least two of the following: resting tremor, bradykinesia, rigidity (must have either resting tremor or bradykinesia); OR either asymmetric resting tremor or asymmetric bradykinesia.
- Hoehn and Yahr stage I or II at Baseline.
- Confirmation of causative LRRK2 or GBA (willingness to undergo genetic testing as part of genetic screening and be informed of genetic testing results, or approved documentation of prior genetic testing results).
- Individuals taking any of the following drugs: alpha methyldopa, methylphenidate, amphetamine derivatives or modafinil, must be willing and medically able to hold the medication for at least 5 half-lives before SPECT imaging.
- Confirmation that participant is eligible based on Screening SPECT imaging.
- Able to provide informed consent.
- Either is male, or is female and meets additional criteria below, as applicable:
- Female of childbearing potential who is not pregnant, lactating, or planning pregnancy during the study and has a negative pregnancy test on day of Screening SPECT imaging test prior to injection of DaTscanTM.
- 7.3.2 Exclusion Criteria (PD - LRRK2 or GBA)
- Received any of the following drugs: dopamine receptor blockers (neuroleptics), metoclopramide and reserpine within 6 months of Screening visit.
- Current treatment with anticoagulants (e.g., coumadin, heparin) that might preclude safe completion of the lumbar puncture.
- Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
- Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
- Any other reason that, in the opinion of the investigator, would render the participant unsuitable for study enrollment.
- 7.4 Parkinson's Disease (PD) with SNCA or rare genetic variant Note: Active PD participants previously enrolled in PPMI do not require re-assessment of eligibility criteria listed below for enrollment in PPMI clinical. Active participants do need to be able to provide informed consent for PPMI Clinical participation (includes use of a designated research proxy).
- 7.4.1 Inclusion Criteria (PD - SNCA or rare genetic variant (such as Parkin or Pink1))
- Male or female age 30 years or older at Screening Visit.
- Parkinson's disease diagnosis at Screening Visit.
- Patients must have at least two of the following: resting tremor, bradykinesia, rigidity (must have either resting tremor or bradykinesia); OR either asymmetric resting tremor or asymmetric bradykinesia.
- Hoehn and Yahr stage I, II, or III at Baseline.
- Confirmation of causative SNCA or rare genetic variant (such as Parkin or Pink1) (willingness to undergo genetic testing as part of genetic screening and be informed of genetic testing results, or approved documentation of prior genetic testing results).
- Individuals taking any of the following drugs: alpha methyldopa, methylphenidate, amphetamine derivatives or modafinil, must be willing and medically able to hold the medication for at least 5 half-lives before SPECT imaging.
- Confirmation that participant is eligible based on Screening SPECT imaging.
- Able to provide informed consent.
- Either is male, or is female and meets additional criteria below, as applicable:
- Female of childbearing potential who is not pregnant, lactating, or planning pregnancy during the study and has a negative pregnancy test on day of Screening SPECT imaging test prior to injection of DaTscanTM.
- 7.4.2 Exclusion Criteria (PD - SNCA or rare genetic variant (such as Parkin or Pink1))
- Received any of the following drugs: dopamine receptor blockers (neuroleptics), metoclopramide and reserpine within 6 months of Screening visit.
- Current treatment with anticoagulants (e.g., coumadin, heparin) that might preclude safe completion of the lumbar puncture.
- Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
- Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
- Any other reason that, in the opinion of the investigator, would render the participant unsuitable for study enrollment.
- 7.5 Prodromal Note: Active Prodromal participants previously enrolled in PPMI do not require re-assessment of eligibility criteria listed below for enrollment in PPMI Clinical. Active participants do need to be able to provide informed consent for PPMI Clinical participation (includes use of a designated research proxy).
- The specific predictive eligibility criteria for participants recruited through PPMI Remote to advance to PPMI Clinical will be iteratively optimized based on data collected from these studies.
- 7.5.1 Inclusion criteria (Prodromal)
- For Screening:
- Confirmation that participant is eligible based on centrally determined predictive criteria including the University of Pennsylvania Smell Identification Test (UPSIT).
- For participants in PPMI Remote, referral to the clinical site confirms predictive eligibility.
- For participants identified by the clinical site, predictive criteria are based on generalized risk such as first degree biologic relative, known risk of PD including RBD, or known genetic variants associated with PD risk.
- Additionally, confirmation of UPSIT eligibility during the Screening visit prior to SPECT Imaging.
- Male or female age 60 years or older (except age 30 years or older for SNCA, or rare genetic variants (such as Parkin or Pink1) participants).
- Individuals taking any of the following drugs: alpha methyldopa, methylphenidate, amphetamine derivatives or modafinil, must be willing and medically able to hold the medication for at least 5 half-lives before SPECT imaging.
- Able to provide informed consent.
- Either is male, or is female and meets additional criteria below, as applicable:
- Female of childbearing potential who is not pregnant, lactating, or planning pregnancy during the study and has a negative pregnancy test on day of Screening SPECT imaging test prior to injection of DaTscanTM.
- For continuation to Baseline visit and ongoing follow-up:
- Confirmation that participant is eligible based on \*Screening SPECT imaging.
- Screening SPECT Imaging eligibility:
- Based on the results of the SPECT imaging test, Prodromal participants eligible to continue their participation in PPMI Clinical will be asked to return for their PPMI Clinical baseline visit. Neither the participant nor the site investigator will be made aware of the participant's DAT status during the study.
- It is anticipated that approximately 6,000 participants will complete a screening visit to undergo DAT imaging. Approximately 2,000 participants will be eligible to continue their participation in PPMI Clinical (those not eligible to proceed will remain in PPMI Remote, as applicable).
- All participants with DAT deficit will be eligible to continue their participation in PPMI Clinical. It is estimated that about 75% of eligible participants will have a DAT deficit (defined by a hybrid of visual assessment and quantitative striatal specific binding analysis).
- Some participants without DAT deficit will also be eligible to continue their participation in PPMI Clinical. These participants will be chosen based on DAT binding that is reduced from age expected but it not outside the normal range and/or from individuals with high-risk of PD including RBD, LRRK2, GBA, SNCA, or rare genetic variants (such as Parkin or Pink1) that do not demonstrate DAT deficit. It is estimated that about 25% of eligible participants will not have a DAT deficit.
- It is anticipated that approximately 30% of the PPMI Clinical prodromal participants with DAT deficit will phenoconvert to motor parkinsonism during a 3 to 5-year follow-up.
- 7.5.2 Exclusion Criteria (Prodromal)
- Clinical diagnosis of PD at screening, other parkinsonism, or dementia.
- Received any of the following drugs: dopamine receptor blockers (neuroleptics), metoclopramide and reserpine within 6 months of Baseline Visit.
- Current treatment with anticoagulants (e.g. coumadin, heparin) that might preclude safe completion of the lumbar puncture.
- Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
- Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
- Currently taking levodopa, dopamine agonists, MAO-B inhibitors, amantadine or another PD medication, except for low-dose treatment of restless leg syndrome (with permission of medical monitor).
- Has taken levodopa, dopamine agonists, MAO-B inhibitors or amantadine within 60 days of Baseline visit. except for low-dose treatment of restless leg syndrome (with permission of medical monitor).
- Any other reason that, in the opinion of the investigator, would render the participant unsuitable for study enrollment.
Age in the registry: 30 years to - · Sex: All · Accepts healthy volunteers
Sites (50)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Innsbruck Medical University Coordinator of this site? Confirm its status | Innsbruck | Austria | Recruiting |
| McGill University Coordinator of this site? Confirm its status | Montreal | Canada | Recruiting |
| The Ottawa Hospital - Civic Campus Coordinator of this site? Confirm its status | Ottawa | Canada | Recruiting |
| Toronto Western Hospital Coordinator of this site? Confirm its status | Toronto | Canada | Recruiting |
| Philipps-University of Marburg Coordinator of this site? Confirm its status | Hessen | Germany | Recruiting |
| Paracelsus - Elena- Klinik Coordinator of this site? Confirm its status | Kassel | Germany | Recruiting |
| University of Luebeck Coordinator of this site? Confirm its status | Lübeck | Germany | Recruiting |
| University of Tuebingen Coordinator of this site? Confirm its status | Tübingen | Germany | Recruiting |
| Hospital Clinic de Barcelona Coordinator of this site? Confirm its status | Barcelona | Spain | Recruiting |
| Hospital Donostia Coordinator of this site? Confirm its status | Donostia / San Sebastian | Spain | Recruiting |
| Imperial College London Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| Queen Mary University of London Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| Newcastle University Coordinator of this site? Confirm its status | Newcastle upon Tyne | United Kingdom | Recruiting |
| John Radcliffe Hospital Oxford and Oxford University Coordinator of this site? Confirm its status | Oxford | United Kingdom | Recruiting |
| Foundation for Biomedical Research of the Academy of Athens Coordinator of this site? Confirm its status | Athens | Greece | Recruiting |
| Tel-Aviv Sourasky Medical Center Coordinator of this site? Confirm its status | Tel Aviv | Israel | Recruiting |
| University of Salerno Coordinator of this site? Confirm its status | Salerno | Italy | Recruiting |
| Parkinson Research Clinic Coordinator of this site? Confirm its status | Luxembourg | Luxembourg | Recruiting |
| Lagos College of Medicine, University of Lagos Coordinator of this site? Confirm its status | Lagos | Nigeria | Recruiting |
| Radboud University Coordinator of this site? Confirm its status | Nijmegen | Netherlands | Recruiting |
| University of Michigan Coordinator of this site? Confirm its status | Ann Arbor | United States | Recruiting |
| Emory University School of Medicine Coordinator of this site? Confirm its status | Atlanta | United States | Recruiting |
| University of Colorado Anschutz Medical Campus Coordinator of this site? Confirm its status | Aurora | United States | Recruiting |
| Johns Hopkins University Coordinator of this site? Confirm its status | Baltimore | United States | Recruiting |
| University of Alabama at Birmingham Coordinator of this site? Confirm its status | Birmingham | United States | Recruiting |
| Parkinson's Disease& Movement Disorder Center of Boca Raton Coordinator of this site? Confirm its status | Boca Raton | United States | Recruiting |
| Boston University Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
| Massachusetts General Hospital Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
| Northwestern University Coordinator of this site? Confirm its status | Chicago | United States | Recruiting |
| University of Cincinnati/Cincinnati Children's Hospital Coordinator of this site? Confirm its status | Cincinnati | United States | Recruiting |
| Cleveland Clinic Coordinator of this site? Confirm its status | Cleveland | United States | Recruiting |
| University of Florida Coordinator of this site? Confirm its status | Gainesville | United States | Recruiting |
| Baylor College of Medicine Coordinator of this site? Confirm its status | Houston | United States | Recruiting |
| University of Kansas Medical Center Coordinator of this site? Confirm its status | Kansas City | United States | Recruiting |
| University of California San Diego Coordinator of this site? Confirm its status | La Jolla | United States | Recruiting |
| Cleveland Clinic Lou Ruvo Center for Brain Health Coordinator of this site? Confirm its status | Las Vegas | United States | Recruiting |
| Keck School of Medicine of USC Coordinator of this site? Confirm its status | Los Angeles | United States | Recruiting |
| Institute for Neurodegenerative Disorders Coordinator of this site? Confirm its status | New Haven | United States | Recruiting |
| NYU Langone Health Coordinator of this site? Confirm its status | New York | United States | Recruiting |
| Beth Israel Medical Center Coordinator of this site? Confirm its status | New York | United States | Recruiting |
| University of Pennsylvania Coordinator of this site? Confirm its status | Philadelphia | United States | Recruiting |
| Barrow Neurological Institute Coordinator of this site? Confirm its status | Phoenix | United States | Recruiting |
| University of Pittsburgh Coordinator of this site? Confirm its status | Pittsburgh | United States | Recruiting |
| Oregon Health Science University Coordinator of this site? Confirm its status | Portland | United States | Recruiting |
| University of Rochester Coordinator of this site? Confirm its status | Rochester | United States | Recruiting |
| University of California San Francisco Coordinator of this site? Confirm its status | San Francisco | United States | Recruiting |
| Mayo Foundation for Medical Education and Research Coordinator of this site? Confirm its status | Scottsdale | United States | Recruiting |
| Univ of Washington and VA Puget Sound Health Care System Coordinator of this site? Confirm its status | Seattle | United States | Recruiting |
| Banner Research Institute Coordinator of this site? Confirm its status | Sun City | United States | Recruiting |
| University of South Florida Coordinator of this site? Confirm its status | Tampa | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.