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The CSF Profile Linked to Cortical Damage Predicts Multiple Sclerosis Activity.

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Cerebrospinal fluid (CSF) analysis reveals specific cytokine profiles that predict multiple sclerosis (MS) disease activity and grey matter damage. Elevated B-cell related cytokines in CSF can identify patients at high risk for disease progression.

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Area of Science:

  • Neuroimmunology
  • Multiple Sclerosis Pathogenesis
  • Biomarker Discovery

Background:

  • Intrathecal inflammation is linked to grey matter damage in early multiple sclerosis (MS).
  • The predictive value of cerebrospinal fluid (CSF) cytokine profiles for MS disease activity remains unclear.

Purpose of the Study:

  • To investigate the association between CSF cytokine levels and disease activity in relapsing-remitting MS (RRMS).
  • To determine if CSF profiles can identify patients at risk of disease progression and cortical damage.

Main Methods:

  • Longitudinal study of 99 RRMS patients over 4 years with clinical and 3 T MRI evaluations.
  • Analysis of CSF levels of 18 cytokines, correlating them with evidence of disease activity (EDA) and no evidence of disease activity (NEDA).
  • Evaluation of cortical lesions and annualized cortical thinning.

Main Results:

  • Patients with EDA exhibited higher baseline CSF levels of CXCL13, CXCL12, IFNγ, TNF, sCD163, LIGHT, and APRIL compared to NEDA patients.
  • Multivariate analysis identified CXCL13, LIGHT, and APRIL as strong predictors of EDA risk.
  • A CSF-based model significantly improved prediction of disease activity compared to clinical/MRI data alone.

Conclusions:

  • A distinct CSF cytokine profile, particularly elevated B-cell related cytokines, identifies MS patients at high risk for disease activity and severe cortical damage.
  • CSF analysis at diagnosis can aid in stratifying patients for optimized therapeutic strategies.