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SCIENTIFIC LITERATURE · MED

Soluble immune factor profiles in blood and CSF associated with LRRK2 mutations and Parkinson's disease.

NPJ Parkinsons Dis · 2025-11-27

DOI: 10.1038/s41531-025-01215-5PMID: 41309625

Open accessresearch-article; Journal ArticleOriginal source ↗

Research overview

The text below is the source article’s original abstract under a verified reuse license. cc by

Mutations in LRRK2, a leading genetic cause of Parkinson's disease (PD), are linked to immune dysregulation, but the immune profiles in the periphery and central nervous system (CNS) remain incompletely defined. This study utilized a large cohort of serum samples (n = 651) and matched CSF samples (n = 129) from LRRK2 mutation carriers and non-carriers, with and without PD, to assess immune regulators using Luminex immunoassay. After correction for multiple comparisons, LRRK2 mutations were associated with significantly elevated serum levels of SDF-1 alpha and TNF-RII, while CSF markers such as BAFF, CD40L, and IL-27 were nominally reduced. Regardless of LRRK2 status, PD was associated with nominally lower levels of inflammatory analytes in CSF, with minimal changes observed in serum. Correlation analyses revealed distinct immune profiles between serum and CSF, suggesting compartmentalized immune responses. These findings highlight immune alterations in LRRK2 mutation carriers and PD, providing potential serum markers for monitoring immune responses and avenues for mechanistic studies.

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