Plasma NfL, GFAP, amyloid, and p-tau species as Prognostic biomarkers in Parkinson's disease

J Neurol. 2024 Dec;271(12):7537-7546. doi: 10.1007/s00415-024-12669-7. Epub 2024 Sep 9.

Abstract

Introduction: The prognostic role of plasma neurofilament light chain (NfL), phospho-tau, beta-amyloid, and GFAP is still debated in Parkinson's disease (PD).

Methods: Plasma p-tau181, p-tau231, Aβ1-40, Aβ1-42, GFAP, and NfL were measured by SIMOA in 136 PD with 2.9 + 1.7 years of follow-up and 76 controls. Differences in plasma levels between controls and PD and their correlation with clinical severity and progression rates were evaluated using linear regression analyses.

Results: Patients exhibited similar distribution of plasma biomarkers but higher P-tau181, P-tau231 and lower Aβ1-42 compared with controls. NfL and GFAP correlated with baseline motor and non-motor severity measures. At follow-up, NfL emerged as the best predictor of progression with marginal effect of GFAP and p-tau181 adjusting for age, sex, disease duration, and baseline motor severity.

Conclusion: The present findings confirmed plasma NfL as best predictor of progression in PD, with a marginal role of p-tau181 and GFAP.

Keywords: GFAP; Neurofilament light chain; Parkinson’s disease; Phosphorylated tau; Plasma biomarkers; Progression.

MeSH terms

  • Aged
  • Amyloid beta-Peptides* / blood
  • Biomarkers* / blood
  • Disease Progression*
  • Female
  • Follow-Up Studies
  • Glial Fibrillary Acidic Protein* / blood
  • Humans
  • Male
  • Middle Aged
  • Neurofilament Proteins* / blood
  • Parkinson Disease* / blood
  • Parkinson Disease* / diagnosis
  • Peptide Fragments / blood
  • Phosphorylation
  • Prognosis
  • Severity of Illness Index
  • tau Proteins* / blood

Substances

  • tau Proteins
  • Neurofilament Proteins
  • neurofilament protein L
  • Glial Fibrillary Acidic Protein
  • Biomarkers
  • Amyloid beta-Peptides
  • GFAP protein, human
  • amyloid beta-protein (1-42)
  • Peptide Fragments
  • MAPT protein, human