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Published on: June 30, 2014
Cognitive impairment predicts conversion to multiple sclerosis in clinically isolated syndromes
Valentina Zipoli1, Benedetta Goretti, Bahia Hakiki
1Department of Neurology, University of Florence, Florence, Italy.
Summary
Cognitive impairment in clinically isolated syndromes predicts conversion to multiple sclerosis. Failing multiple cognitive tests indicates a higher risk, aiding early diagnosis and treatment decisions.
Area of Science:
- Neurology
- Neuroimmunology
- Cognitive Neuroscience
Background:
- Clinically isolated syndromes (CIS) are early indicators of multiple sclerosis (MS).
- Cognitive impairment affects 20-30% of CIS patients, but its prognostic significance is not fully understood.
- Early identification of MS conversion risk is crucial for timely intervention.
Purpose of the Study:
- To evaluate the prognostic value of cognitive impairment in predicting conversion to multiple sclerosis (MS) in patients with CIS.
- To identify specific cognitive deficits that serve as predictors for MS development.
Main Methods:
- Prospective study of 56 CIS patients followed for at least one year.
- Cognitive assessment using Rao's Battery and Stroop test.
- Predictors of conversion to clinically definite MS analyzed using Kaplan-Meier curves and Cox regression.
Main Results:
- 46% of patients converted to MS within 3.5 years.
- Failure in 3 or more cognitive tests significantly increased MS conversion risk (88% conversion rate).
- Failure of at least three cognitive tests (HR 3.3) and dissemination in space at baseline (HR 3.8) were significant predictors of MS conversion.
Conclusions:
- Cognitive impairment is common in CIS and has prognostic value for MS conversion.
- Cognitive assessment can aid in identifying high-risk patients for MS.
- These findings may inform therapeutic decision-making in early MS stages.
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