CSF lymphocytic pleocytosis does not predict a less favourable long-term prognosis in MS
Journal of Neurology(2022)
Abstract
Objective The role of CSF lymphocytic pleocytosis in predicting the clinical outcome of multiple sclerosis is unclear. We explored the impact of CSF pleocytosis at diagnosis on long-term disease progression in a large UK cohort. Methods We extracted demographic, clinical and CSF data of people with MS attending the MS clinics between 1996 and 2014 at two MS centres from the English Midlands. We compared EDSS at onset, follow up EDSS and progression indices Multiple Sclerosis Severity Score (MSSS), annualized change in EDSS and transition to secondary progression in the presence/absence of pleocytosis. Two-tailed student t -test, Mann–Whitney U test, Chi-Square or Fisher’s exact tests were used for detecting the differences. Results A total of 247 patients with MS (178 females; mean age 42.4; 217 with relapsing onset) were followed up for an average of 13.56 years (median 12 years). Almost 18% had lymphocytic CSF ≥ 5 per microliter. CSF pleocytosis was not associated with higher EDSS at the time of LP or at follow up, and other progression indices like MSSS, annualized change in EDSS or transition to secondary progression. Discussion CSF pleocytosis at MS diagnosis does not predict higher long-term disability and has no long-term prognostic value in routine clinical circumstances. Differences between MS populations and potential differences in disease activity at the time of CSF analysis may account for differences between studies.
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Key words
Multiple sclerosis, Cerebrospinal fluid, Pleocytosis, Prognosis
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