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Does CSF pleocytosis have a predictive value for disease course in MS?
Itay Lotan1, Felix Benninger1, Rom Mendel1
1Neuro-Immunology Service and Department of Neurology (I.L., M.A.H.), Rabin Medical Center; Department of Neurology (I.L., F.B., R.M., M.A.H., I.S.), Rabin Medical Center; and Sackler Faculty of Medicine (I.L., F.B., R.M., M.A.H., I.S.), Tel Aviv University, Israel.
Objective:
MS is a demyelinating CNS disorder with a spectrum of clinical patterns regarding course and prognosis. Although several prognostic factors are considered in the initial evaluation of patients, biological markers defining the disease course and guiding treatments are currently lacking. It is unknown whether patients with CSF pleocytosis differ in regard to symptoms, disease course, and prognosis from those without. The aim of this study was to evaluate whether CSF pleocytosis during the initial presentation has an impact on the clinical course and progression of MS.
Methods:
We retrospectively evaluated patients attending the MS Clinic at Rabin Medical Center between January 1999 and January 2016 who underwent lumbar puncture (LP) at disease presentation, considering CSF cell count, clinical diagnosis (clinically isolated syndrome [CIS] and relapsing-remitting MS [RRMS]), annualized relapse rate (ARR), paraclinical findings (imaging, CSF oligoclonal bands, and evoked potentials), and disease progression, expressed by the Expanded Disability Status Scale (EDSS).
Results:
One hundred fourteen patients (72 females) underwent LP at disease presentation (RRMS: n = 100, CIS: n = 14). Age at diagnosis was 32.4 ± 12.2 years, and the follow-up time was 9.4 ± 3.8 years. Forty-six patients showed a pleocytic CSF (≥5 cells per μL). Compared with patients with <4 cells per μL, patients with pleocytosis had a higher ARR (0.60 ± 0.09 vs 0.48 ± 0.04; p = 0.0267) and a steeper increase (slope) in the EDSS score throughout the follow-up period (correlation coefficient: r2 = 0.04; p = 0.0251).
Conclusions:
CSF pleocytosis may be considered a biological unfavorable predictive factor regarding disease course and progression in MS.
Insights
Cerebrospinal fluid (CSF) pleocytosis in multiple sclerosis (MS) patients indicates a higher relapse rate and faster disability progression. This finding suggests CSF pleocytosis is an unfavorable prognostic marker for MS disease course.
Area of Science:
- Neurology
- Immunology
- Clinical Medicine
Background:
- Multiple sclerosis (MS) is a central nervous system demyelinating disorder with variable clinical presentations and prognoses.
- Current prognostic factors for MS are limited, lacking specific biological markers to guide treatment.
- The impact of cerebrospinal fluid (CSF) pleocytosis on MS clinical course and prognosis remains unclear.
Purpose of the Study:
- To investigate the association between CSF pleocytosis at initial presentation and the clinical course of MS.
- To determine if CSF pleocytosis serves as a predictive marker for MS disease progression.
Main Methods:
- Retrospective evaluation of 114 MS patients who underwent lumbar puncture at diagnosis.
- Analysis included CSF cell count, clinical diagnosis (CIS/RRMS), annualized relapse rate (ARR), and Expanded Disability Status Scale (EDSS) progression.
- Comparison of outcomes between patients with and without CSF pleocytosis (≥5 cells/μL vs. <4 cells/μL).
Main Results:
- Forty-six patients (40%) presented with CSF pleocytosis.
- Patients with CSF pleocytosis exhibited a significantly higher ARR (0.60 vs. 0.48, p=0.0267).
- Pleocytosis was associated with a steeper EDSS score increase over the follow-up period (r²=0.04, p=0.0251).
Conclusions:
- CSF pleocytosis at initial MS presentation is linked to a more aggressive disease course.
- Elevated CSF cell counts may serve as an unfavorable biological predictive factor in MS.
- These findings highlight the prognostic value of CSF analysis in managing MS patients.
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