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Updated: Aug 7, 2026

The Multiple Sclerosis Performance Test (MSPT): An iPad-Based Disability Assessment Tool
Published on: June 30, 2014
The new global multiple sclerosis severity score (MSSS) correlates with axonal but not glial biomarkers
A Petzold1, M I Eikelenboom, G Keir
1Department of Neuroinflammation, Institute of Neurology, Queen Square, London, UK. a.petzold@ion.ucl.ac.uk
Abstract:
This study investigated whether the new Global Multiple Sclerosis Severity Scale (MSSS) correlated with cerebrospinal fluid biomarkers for axonal and glial pathology. The MSSS correlated with the phosphorylated neurofilament heavy chain (NfH-SM135, R=0.44, P=0.016). The degree of neurofilament phosphorylation (ratio NfH-SM134 to NfH-SM135) was 8-fold higher in severely (median MSSS 6.5) versus mildly (MSSS 3.2) disabled patients (7.3 versus 0.9, P = 0.03). The MSSS may provide a statistically powerful tool for comparing overall disease severity and be useful for validating the biomarker concept in MS.

