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Outcomes in Long‐Term Follow‐Up of Sporadic Parkinson's Disease in the Parkinson's Progression Markers Initiative
Editorial   Open access

Outcomes in Long‐Term Follow‐Up of Sporadic Parkinson's Disease in the Parkinson's Progression Markers Initiative

Paulina Gonzalez-Latapi, Caroline Gochanour, Seung Ho Choi, Hyunkeun Cho, Chelsea Caspell-Garcia, Christopher S. Coffey, David‐Erick Lafontant, Yuge Xiao, Caroline M. Tanner, Charles S. Venuto, …
Annals of neurology
05/18/2026
DOI: 10.1002/ana.78248
PMID: 42152134
url
https://doi.org/10.1002/ana.78248View
Published (Version of record) Open Access

Abstract

The Parkinson's Progression Markers Initiative (PPMI) has addressed a key gap in the availability of long‐term longitudinal data in sporadic Parkinson's disease (sPD) with extensive biological characterization. With biological characterization in the neuronal synuclein disease (NSD) framework, longitudinal outcomes are observed in cohorts defined by biological characteristics rather than based on conventional clinical diagnostic criteria. We recently reported our observations on 5 years of follow up in this cohort, and here, we provide our earliest findings on a comprehensive long‐term description of disease progression in 344 sPD participants followed for up to 11 years. Although data collection is ongoing, these early findings highlight the heterogeneity in the early PD population as defined by clinical diagnostic criteria and affirm the importance of shifting to biologically and functionally based criteria in clinical research studies. ANN NEUROL 2026

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