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Retricted access

Research article

First published 2019-05-07

Impact of Pre-Analytical Differences on Biomarkers in the ADNI and PPMI Studies: Implications in the Era of Classifying Disease Based on Biomarkers

Tessandra Stewart, Min Shi, Aanchal Mehrotra [...]

Journal of Alzheimer’s Disease

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Research article

First published 2018-10-16

Brain Amyloid Contribution to Cognitive Dysfunction in Early-Stage Parkinson’s Disease: The PPMI Dataset

Eleonora Fiorenzato, Roberta Biundo, Diego Cecchin [...]

Journal of Alzheimer’s Disease

Free access

Research article

First published 2020-04-03

Serum Uric Acid Level as a Biomarker in Idiopathic and Genetic (p.A53T Alpha-Synuclein Carriers) Parkinson’s Disease: Data from the PPMI Study

Christos Koros, Athina-Maria Simitsi, Dimitra Papadimitriou [...]

Journal of Parkinson’s Disease

Free access

Research article

First published 2021-04-13

Serum Uric Acid in LRRK2 Related Parkinson’s Disease: Longitudinal Data from the PPMI Study

Anastasia Bougea, Christos Koros, Nikolaos Papagiannakis [...]

Journal of Parkinson’s Disease

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Review article

First published 2013-4

You Have the Tools . . . . Now Create That PPMI Model!

Mark J. Sinnett

Journal of Pharmacy Practice

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Research article

First published 2022-5

The 3-Item “Apathy” Subscale Within the GDS-15 Is Not Supported in De Novo Parkinson’s Disease Patients: Analysis of the PPMI Cohort

Sarah M. Szymkowicz, Liam J. Ellis, Pamela E. May

Journal of Geriatric Psychiatry and Neurology

Open access

Research article

First published 2025-2

Addressing the need for standardization of symptomatic medication documentation in Parkinson's disease clinical research: A call to action

Mikayla Spott, Monica Javidnia, Anne Pedata [...]

Journal of Parkinson’s Disease

Free access

Research article

First published 2022

Longitudinal Change and Progression Indicators Using the Movement Disorder Society-Unified Parkinson’s Disease Rating Scale in Two Independent Cohorts with Early Parkinson’s Disease

Michael Bartl, Mohammed Dakna, Sebastian Schade [...]

Journal of Parkinson’s Disease

Open access

Review article

First published 2019-07-30

The Qualification of an Enrichment Biomarker for Clinical Trials Targeting Early Stages of Parkinson’s Disease

Diane Stephenson, Derek Hill, Jesse M. Cedarbaum [...]

Journal of Parkinson’s Disease

Open access

Research article

First published 2023

Serum Uric Acid as a Putative Biomarker in Prodromal Parkinson’s Disease: Longitudinal Data from the PPMI Study

Christos Koros, Athina-Maria Simitsi, Nikolaos Papagiannakis [...]

Journal of Parkinson’s Disease

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