Study to Identify Clinical, Imaging and Biologic Markers of Parkinson Disease Progression

NCT ID: NCT01141023

Last Updated: 2023-11-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

952 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-06-30

Study Completion Date

2020-06-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

This is a observational, multi-center study to assess progression of clinical features, imaging and biologic biomarkers in Parkinson disease (PD) patients compared to healthy controls (HC) and in PD patient subtypes.

The primary objective of this study is to identify clinical, imaging and biologic markers of PD progression for use in clinical trials of disease-modifying therapies.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Amendment 14 - 26-Mar-2018 Revised to reflect the implementation of PPMI Wearables and Sensor Study Companion Protocol

Amendment 13 - 20-Nov-2017 Extension of study duration until 2023 for all cohorts (except Genetic Registry).

Amendment 12 - 01-Jun-2017 Planned date of trial extended to September 30, 2020 Ceasing new enrollments into the Genetic Registry for LRRK2 and GBA subjects Added Sensor - PPMI Companion Study Allow for consent to share contact information with FOUND team at any visit. Incorporation of Parkinson's Disease Risk Factor Questionnaire (PD-RFQ) into FOUND.

Amendment 11 - 01-Apr-2016 Added the collection of peripheral blood mononuclear cells (PBMC) from blood samples at interim visits.

Addition of PPMI Pathology Core/PPMI Brain and Tissue Bank Addition of Gait Assessment Companion Study (Select PPMI sites - Genetic Cohort only) Testing for additional GBA mutations - previously testing involved testing only for the GBA N370S mutation; however, going forward, testing will include tests for additional GBA mutations that are identified as being associated with certain ancestry.

Amendment 10 - 05-Oct-2015 Extended study period for PD and Healthy Control subjects through 8 years. For Prodromal subjects (RBD and Hyposmic) added iPSC companion study.

Amendment 9 - 01-Nov-2014 Addition of GBA throughout to document additional testing for GBA mutation. Allocation of subjects in Genetic Cohort and Genetic Registry revised to account for inclusion of GBA subjects.

Amendment 8 - 12-May-2014 Companion Protocols: skin biopsy/stem cell; Amyloid Imaging 18F Florbetaben; Family History Sub-Study; FOUND in PPMI registry. More detailed description of new procedures including: Advance directive for clinical research participation; Extension of study period (for SWEDDs with positive scans at Yr. 2) by continuing or re-inviting to study and followed (as per PD subjects through Month 60); Objective Parkinson Disease Measurement (OPDM) finger tapping measurement.

Amendment 7 - 14-Oct-2013 Pre-Screening Prodromal - RBD clarifications Pre-Screening Genetic Cohort - clarified Assessments/tests clarified, including addition of consent (or withdrawal of consent, if applicable) for future contact about future studies and PD family history data collection for Genetic cohort subjects as selected visits.

Amendment 6 - 29-May-2013 Genetics Coordination Core is added to study. The GCC included Genetic Cohort PD Subjects, Genetic Cohort Unaffected Subjects and Genetic Registry Subjects.

Amendment 5 - 27-Nov-2012 Olfactory and RBD subjects added as the Prodromal cohort.

Amendment 4 - 30-Mar-2012 Addition of 18F-AV-133 VMAT-2 PET Imaging for participating U.S. sites and Australia. (Refer to 18F-AV-133-PPMI companion protocol).

Number of sites increased from 21 to 24. Addition of cognitive categorization and diagnostic features assessments.

Amendment 3 - 15-Jul-2011 Addition of SWEDD subjects to study design. Blood Sampling Advisement to collect research samples in a fasted state.

Amendment 2 - 19-May-2011 Changed visit window from 30 days to 45 days for Baseline visit to be completed.

Section on DAT and SPECT Imaging - section changed to account for subject travel to the Institute for Neurodegenerative Disorders to conduct SPECT scanning and injection of either DaTSCAN or BCIT.

Main Protocol - PPMI will be a five-year natural history study (a minimum of 3-year involvement for each subject) of de novo idiopathic PD patients and healthy controls. This study will also include a SWEDD (subjects without evidence of dopaminergic deficit)and Prodromal populations.

All subjects will be comprehensively assessed at baseline and every three to six months thereafter. Subjects will undergo clinical (motor, neuropsychiatric and cognitive) and imaging assessments and will donate blood, urine, and cerebral spinal fluid (CSF). A blood sample for DNA will be collected. Data will be collected by each site under uniformly established protocols and data will be analyzed and stored at designated core facilities.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Parkinson Disease

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Datscan SPECT Imaging

Subjects will b injected with 3-5 mCi of dopamine transporter. Within a 4 hour (+/- 30 minutes) window following the injection, subjects will undergo SPECT imaging on the camera.

Group Type EXPERIMENTAL

DaTscan

Intervention Type DRUG

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

DaTscan

Intervention Type DRUG

Other Intervention Names

Discover alternative or legacy names that may be used to describe the listed interventions across different sources.

Ioflupane

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

Parkinson Disease (PD) Subjects:

* A diagnosis of Parkinson disease for 2 years or less at Screening.
* Confirmation from imaging core that screening DAT scan is consistent with dopamine transporter deficit, or if applicable a VMAT-2 PET scan consistent with vesicular monoamine transporter deficit.
* Not expected to require PD medication with at least 6 months from Baseline.
* Male or female age 30 years or older at time of PD diagnosis.

Healthy Control (HC) Subjects:

• Male or female age 30 years or older at Screening.


Hyposmia:

1. Male or female age 60 years or older
2. Confirmation from olfactory core that olfaction as determined by UPSIT is at or below the 10th percentile by age and gender

REM Behavior Disorder (RBD):

1. Male or female age 60 years or older
2. Confirmation from sleep core that subject's Polysomnography (PSG) meets criteria for RBD

LRRK2:

1. Male or female age 60 years or older
2. Written confirmation or documentation from testing facility that the individual is LRRK2 mutation positive 4.2.7.2. Confirmation from imaging core that screening dopamine transporter SPECT scan is read as eligible (see below). About 80 subjects will have a range of DAT deficit similar to subjects with early PD (mild to moderate DAT deficit). About 20 subjects will be selected with no DAT deficit or minimal DAT deficit similar in age, gender, and risk profile to those with mild to moderate DAT deficit. 4.2.7.3. Ability to provide written informed consent in accordance with Good Clinical Practice (GCP), International Conference on Harmonization (ICH), and local regulations. 4.2.7.4. Willing and able to comply with scheduled visits, required study procedures and laboratory tests. 4.2.7.5. Women may not be pregnant, lactating or planning pregnancy during the course of the study. Includes a negative urine pregnancy test on day of screening scan prior to injection (DaTSCAN).

Exclusion Criteria

Parkinson Disease (PD) Subjects:

* Currently taking levodopa, dopamine agonists, MAO-B inhibitors, amantadine or other PD medication.
* Has taken levodopa, dopamine agonists, MAO-B inhibitors or amantadine within 60 days of Baseline.
* Has taken levodopa or dopamine agonists prior to Baseline for more than a total of 60 days.
* Received any of the following drugs that might interfere with DAT imaging: Neuroleptics, metoclopramide, alpha methyldopa, methylphenidate, reserpine, or amphetamine derivative, within 6 months of Screening.
* Current treatment with anticoagulants (e.g., coumadin, heparin) that might preclude safe completion of the lumbar puncture.

If applicable, currently taking medications that are known to cause QT-prolongation, or are currently taking tetrabenazine (TBZ or amphetamine type medications.

* Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
* Use of investigational drugs within 60 days prior to Baseline (dietary supplements taken outside of a clinical trial are not exclusionary, e.g., coenzyme Q10).

Healthy Control (HC) Subjects:

* Current or active neurological disorder.
* First degree relative with idiopathic PD (parent, sibling, child).
* MoCA score \< 26.
* Received any of the following drugs that might interfere with DAT imaging: Neuroleptics, metoclopramide, alpha methyldopa, methylphenidate, reserpine, or amphetamine derivative, within 6 months of Screening.

If applicable, currently taking medications that are known to cause QT-prolongation, or are currently taking tetrabenazine (TBZ) or amphetamine type medications.

* 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.
* Use of other investigational drugs within 60 days prior to baseline (dietary supplements taken outside of a clinical trial are not exclusionary, e.g., coenzyme Q10).

SWEDD Subjects:

All PD criteria apply, as above, except a SWEDD subject must have confirmation from imaging core that screening dopamine transporter SPECT scan shows no evidence of dopamine transporter deficit or if applicable a VMAT-2 PET scan shows no evidence of vesicular monoamine transporter deficit.

Prodromal Subjects:


1. Current or active clinically significant neurological disorder or psychiatric disorder (in the opinion of the Investigator).
2. GDS score greater than or equal to 10 (GDS score of 5 - 9 requires Investigator discretion to enter study).
3. STAI Form Y-1 greater than or equal to 54 requires Investigator discretion to enter study.
4. A clinical diagnosis of dementia63 as determined by the investigator (Appendix 1).
5. A clinical diagnosis of Parkinson disease at the Screening visit as determined by the Investigator.
6. Received any of the following drugs that might interfere with dopamine transporter SPECT imaging: Neuroleptics, metoclopramide, alpha methyldopa, methylphenidate, reserpine, or amphetamine derivative, within 6 months of Screening.
7. Current treatment with anticoagulants (e.g., coumadin, heparin) that might preclude safe completion of the lumbar puncture.
8. Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis, or clinically significant coagulopathy or thrombocytopenia.
9. Any other medical or psychiatric condition or lab abnormality, which in the opinion of the investigator might preclude participation.
10. Use of investigational drugs or devices within 60 days prior to Baseline (dietary supplements taken outside of a clinical trial are not exclusionary, e.g., coenzyme Q10).
11. Previously obtained MRI scan with evidence of clinically significant neurological disorder (in the opinion of the Investigator).

Genetic Cohort: Parkinson Disease Subjects - Inclusion:

1. Patients must have at least two of the following: resting tremor, bradykinesia, rigidity (must have either resting remor or bradykinesia) or either asymmetric resting tremor or asymmetric bradykinesia.
2. A diagnosis of Parkinson Disease for 7 years or less at screening.
3. Hoehn and Yahr state \<4 at baseline
4. Male or female age 18 years or older
5. Willingness to undergo genetic testing and to be informed of genetic testing results.
6. Confirmation of mutation in LRRK2, GBA or SNCA
7. For subjects taking any drugs that might interfere with dopamine transporter SPECT imaging (Neuroleptics, metoclopramide, alpha methyldopa, methylphenidate, reserpine or amphetamine derivative must be willing and able from a medical standpoint to hold the medication for at least 5 half-lives prior to screening DatSCAN(TM) imaging.

Exclusion:

1. Current treatment with anticoagulants (e.g., coumadin, heparin) that might preclude safe completion of the lumbar puncture.
2. Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis or clinically significant coagulopathy or thrombocytopenia.

Genetic cohort - Unaffected Individuals

Inclusion:

1. Male or female age 45 years or older at baseline with LRRK2 or GBA mutation and/or first degree relative with a LRRK2 or GBA mutation or
2. Male or female age 30 years or older at baseline with a SNCA mutation and/or a first degree relative with a SNCA mutation.
3. Unaffected subjects at high risk of LRRK2, GBA or SNCA mutation due to first degree relative with a LRRK2, GBA or SNCA mutation may choose either to be informed of the results or remain unaware of the results.
4. Unaffected subjects from an ethnic or geographic group knkown to have relatively high risk of LRRK2, GBA or SNCA mutation such as people of Ashkenazi Jewish or Basques descent) and who have a family member (either alive or deceased) who has/had PD must be willing to be informed of their own testing results.
5. Willingness to undergo genetic testing
6. For subjects taking any of the following drugs that might interfere with dopamine transporter SPECT imaging (neuroleptics, metoclopramide, alpha methyldopa, methylphenidate, reserpine or amphetamine derivative) must be willing and able from a medical standpoint to hold the medication for at least 5 half-lives prior to DatSCAN imaging.

Exclusion:

1. A clinical diagnosis of PD
2. Current treatment with anticoagulants (e.g. coumadin, heparin) that might preclude safe completion of the lumbar puncture.
3. Condition that precludes the safe performance of routine lumbar puncture, such as prohibitive lumbar spinal disease, bleeding diathesis or clinically significant coagulopathy or thrombocytopenia.

Genetic Registry - Inclusion:

1. Individual with a LRRK2, GBA or SNCA mutation and/or a first degree relative with a LRRK2, GBA or SNCA mutation.
2. Male or female age 18 years or older
3. Willingness to undergo genetic testing, but may choose either to be informed of the results or remain unaware of the results.
Minimum Eligible Age

30 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Institute for Neurodegenerative Disorders

OTHER

Sponsor Role collaborator

Ken Marek, MD

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Ken Marek, MD

Study Chair

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Kenneth L Marek, MD

Role: STUDY_CHAIR

Institute for Neurodegenerative Disorders

John Q. Trojanowski, MD, PhD

Role: STUDY_DIRECTOR

University of Pennsylvania

Arthur W. Toga, PhD

Role: STUDY_DIRECTOR

University of California, Los Angeles

Tatiana Froud, PhD

Role: STUDY_DIRECTOR

Indiana University

Karl Kieburtz, MD

Role: STUDY_DIRECTOR

Clinical Trials Coordination Center

Andrew Singleton, PhD

Role: STUDY_DIRECTOR

Laboratory of Neurogenetics; National Institute on Aging NIH

John P Seibyl, MD

Role: STUDY_DIRECTOR

Institute for Neurodegenerative Disorders

Christopher Coffey, PhD

Role: STUDY_DIRECTOR

Clinical Trials Statistical and Data Management Center, University of Iowa

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

University of Alabama at Birmingham

Birmingham, Alabama, United States

Site Status

Banner Research Institute

Sun City, Arizona, United States

Site Status

University of California San Diego

La Jolla, California, United States

Site Status

University of California, San Francisco

San Francisco, California, United States

Site Status

The Parkinson's Institute

Sunnyvale, California, United States

Site Status

Institute For Neurodegenerative Disorders

New Haven, Connecticut, United States

Site Status

Parkinson's Disease& Movement Disorder Center of Boca Raton

Boca Raton, Florida, United States

Site Status

University of South Florida

Tampa, Florida, United States

Site Status

Emory University School of Medicine

Atlanta, Georgia, United States

Site Status

Northwestern University

Chicago, Illinois, United States

Site Status

John Hopkins University

Baltimore, Maryland, United States

Site Status

Boston University

Boston, Massachusetts, United States

Site Status

Beth Israel Medical Center

New York, New York, United States

Site Status

Columbia University Medical Center

New York, New York, United States

Site Status

University of Rochester

Rochester, New York, United States

Site Status

University of Cincinnati/Cincinnati Children's Hospital

Cincinnati, Ohio, United States

Site Status

Cleveland Clinic

Cleveland, Ohio, United States

Site Status

Oregon Health &Science University

Portland, Oregon, United States

Site Status

University of Pennsylvania

Philadelphia, Pennsylvania, United States

Site Status

Baylor College of Medicine

Houston, Texas, United States

Site Status

Univ of Washington and VA Puget Sound Health Care System

Seattle, Washington, United States

Site Status

Macquarie University

Sydney, , Australia

Site Status

Innsbruck Medical University

Innsbruck, , Austria

Site Status

Hospital Pitie-Salpetriere

Paris, , France

Site Status

Paracelsus-Elena Klinik

Kassel, , Germany

Site Status

University of Tuebingen

Tübingen, , Germany

Site Status

Foundation for Biomedical Research of the Academy of Athens

Athens, , Greece

Site Status

Tel Aviv Sourasky Medical Center

Tel Aviv, , Israel

Site Status

Universita Federico II

Napoli, , Italy

Site Status

University of Salerno

Salerno, , Italy

Site Status

St. Olavs Hospital

Trondheim, , Norway

Site Status

Hospital Clinic de Barcelona

Barcelona, , Spain

Site Status

Hospital Donostia

Donostia / San Sebastian, , Spain

Site Status

Imperial College London

London, , United Kingdom

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States Australia Austria France Germany Greece Israel Italy Norway Spain United Kingdom

References

Explore related publications, articles, or registry entries linked to this study.

Liu Y, Chen M, Chen P, Lin X, Chen S, Liu C, Wang D, Deng H, Li Q, Wu Y. Machine learning-based stratification of mild cognitive impairment in Parkinson's disease: a multicenter cross-sectional analysis. BMC Med Inform Decis Mak. 2025 Oct 15;25(1):384. doi: 10.1186/s12911-025-03215-0.

Reference Type DERIVED
PMID: 41094519 (View on PubMed)

Tuena C, Repetto C, Ibanez A, Magni G, Stramba-Badiale M, Riva G. Embodied concepts in Parkinson's disease: Insights from fruits versus animals semantic fluency impairments. Neuropsychology. 2025 Oct;39(7):610-618. doi: 10.1037/neu0001026. Epub 2025 Jul 24.

Reference Type DERIVED
PMID: 40705614 (View on PubMed)

Pisani S, Gosse L, Aarsland D, Ray Chaudhuri K, Ballard C, Ffytche D, Velayudhan L, Bhattacharyya S. Parkinson's disease psychosis associated with accelerated multidomain cognitive decline. BMJ Ment Health. 2024 Jul 23;27(1):1-10. doi: 10.1136/bmjment-2024-301062.

Reference Type DERIVED
PMID: 39043465 (View on PubMed)

Park M, Lee YG. Association of Family History and Polygenic Risk Score With Longitudinal Prognosis in Parkinson Disease. Neurol Genet. 2023 Dec 8;10(1):e200115. doi: 10.1212/NXG.0000000000200115. eCollection 2024 Feb.

Reference Type DERIVED
PMID: 38169864 (View on PubMed)

Tsukita K, Sakamaki-Tsukita H, Kaiser S, Zhang L, Messa M, Serrano-Fernandez P, Takahashi R. High-Throughput CSF Proteomics and Machine Learning to Identify Proteomic Signatures for Parkinson Disease Development and Progression. Neurology. 2023 Oct 3;101(14):e1434-e1447. doi: 10.1212/WNL.0000000000207725. Epub 2023 Aug 16.

Reference Type DERIVED
PMID: 37586882 (View on PubMed)

Wang C, Zhou C, Guo T, Jiaerken Y, Yang S, Xu X, Hu L, Huang P, Xu X, Zhang M. Current coffee consumption is associated with decreased striatal dopamine transporter availability in Parkinson's disease patients and healthy controls. BMC Med. 2023 Jul 25;21(1):272. doi: 10.1186/s12916-023-02994-5.

Reference Type DERIVED
PMID: 37491235 (View on PubMed)

Kim R, Kang N, Byun K, Park K, Jun JS. Prognostic significance of peripheral neutrophils and lymphocytes in early untreated Parkinson's disease: an 8-year follow-up study. J Neurol Neurosurg Psychiatry. 2023 Dec;94(12):1040-1046. doi: 10.1136/jnnp-2022-330394. Epub 2023 Jul 14.

Reference Type DERIVED
PMID: 37451695 (View on PubMed)

Weintraub D, Picillo M, Cho HR, Caspell-Garcia C, Blauwendraat C, Brown EG, Chahine LM, Coffey CS, Dobkin RD, Foroud T, Galasko D, Kieburtz K, Marek K, Merchant K, Mollenhauer B, Poston KL, Simuni T, Siderowf A, Singleton A, Seibyl J, Tanner CM; Parkinson's Progression Markers Initiative. Impact of the Dopamine System on Long-Term Cognitive Impairment in Parkinson Disease: An Exploratory Study. Mov Disord Clin Pract. 2023 Apr 25;10(6):943-955. doi: 10.1002/mdc3.13751. eCollection 2023 Jun.

Reference Type DERIVED
PMID: 37332638 (View on PubMed)

Brumm MC, Pierz KA, Lafontant DE, Caspell-Garcia C, Coffey CS, Siderowf A, Marek K. Updated Percentiles for the University of Pennsylvania Smell Identification Test in Adults 50 Years of Age and Older. Neurology. 2023 Apr 18;100(16):e1691-e1701. doi: 10.1212/WNL.0000000000207077. Epub 2023 Feb 27.

Reference Type DERIVED
PMID: 36849448 (View on PubMed)

Kim R, Park S, Yoo D, Jun JS, Jeon B. Association of Physical Activity and APOE Genotype With Longitudinal Cognitive Change in Early Parkinson Disease. Neurology. 2021 May 11;96(19):e2429-e2437. doi: 10.1212/WNL.0000000000011852. Epub 2021 Mar 31.

Reference Type DERIVED
PMID: 33790041 (View on PubMed)

Simuni T, Brumm MC, Uribe L, Caspell-Garcia C, Coffey CS, Siderowf A, Alcalay RN, Trojanowski JQ, Shaw LM, Seibyl J, Singleton A, Toga AW, Galasko D, Foroud T, Nudelman K, Tosun-Turgut D, Poston K, Weintraub D, Mollenhauer B, Tanner CM, Kieburtz K, Chahine LM, Reimer A, Hutten S, Bressman S, Marek K; Parkinson's Progression Markers Initiative Investigators. Clinical and Dopamine Transporter Imaging Characteristics of Leucine Rich Repeat Kinase 2 (LRRK2) and Glucosylceramidase Beta (GBA) Parkinson's Disease Participants in the Parkinson's Progression Markers Initiative: A Cross-Sectional Study. Mov Disord. 2020 May;35(5):833-844. doi: 10.1002/mds.27989. Epub 2020 Feb 19.

Reference Type DERIVED
PMID: 32073681 (View on PubMed)

Simuni T, Uribe L, Cho HR, Caspell-Garcia C, Coffey CS, Siderowf A, Trojanowski JQ, Shaw LM, Seibyl J, Singleton A, Toga AW, Galasko D, Foroud T, Tosun D, Poston K, Weintraub D, Mollenhauer B, Tanner CM, Kieburtz K, Chahine LM, Reimer A, Hutten SJ, Bressman S, Marek K; PPMI Investigators. Clinical and dopamine transporter imaging characteristics of non-manifest LRRK2 and GBA mutation carriers in the Parkinson's Progression Markers Initiative (PPMI): a cross-sectional study. Lancet Neurol. 2020 Jan;19(1):71-80. doi: 10.1016/S1474-4422(19)30319-9. Epub 2019 Oct 31.

Reference Type DERIVED
PMID: 31678032 (View on PubMed)

Simuni T, Caspell-Garcia C, Coffey CS, Weintraub D, Mollenhauer B, Lasch S, Tanner CM, Jennings D, Kieburtz K, Chahine LM, Marek K. Baseline prevalence and longitudinal evolution of non-motor symptoms in early Parkinson's disease: the PPMI cohort. J Neurol Neurosurg Psychiatry. 2018 Jan;89(1):78-88. doi: 10.1136/jnnp-2017-316213. Epub 2017 Oct 6.

Reference Type DERIVED
PMID: 28986467 (View on PubMed)

Latourelle JC, Beste MT, Hadzi TC, Miller RE, Oppenheim JN, Valko MP, Wuest DM, Church BW, Khalil IG, Hayete B, Venuto CS. Large-scale identification of clinical and genetic predictors of motor progression in patients with newly diagnosed Parkinson's disease: a longitudinal cohort study and validation. Lancet Neurol. 2017 Nov;16(11):908-916. doi: 10.1016/S1474-4422(17)30328-9. Epub 2017 Sep 25.

Reference Type DERIVED
PMID: 28958801 (View on PubMed)

Smith KM, Xie SX, Weintraub D. Incident impulse control disorder symptoms and dopamine transporter imaging in Parkinson disease. J Neurol Neurosurg Psychiatry. 2016 Aug;87(8):864-70. doi: 10.1136/jnnp-2015-311827. Epub 2015 Nov 3.

Reference Type DERIVED
PMID: 26534930 (View on PubMed)

Oliveira FP, Castelo-Branco M. Computer-aided diagnosis of Parkinson's disease based on [(123)I]FP-CIT SPECT binding potential images, using the voxels-as-features approach and support vector machines. J Neural Eng. 2015 Apr;12(2):026008. doi: 10.1088/1741-2560/12/2/026008. Epub 2015 Feb 24.

Reference Type DERIVED
PMID: 25710187 (View on PubMed)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

PPMI-001

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Measuring Parkinson's Disease Progression
NCT03205956 COMPLETED PHASE1