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Abstract Details

Story Repetition Reflects Memory Dysfunction in Multiple Sclerosis Better than Traditional Metrics: Implications for Language-Mediated Deficits
Multiple Sclerosis
S10 - Multiple Sclerosis: Biomarkers and Outcome Measures (3:42 PM-3:54 PM)
002
To better understand memory deficits in multiple sclerosis (MS) by identifying objective memory assessment approaches that best represent patient-reported memory difficulty. 

Patient-reported memory is not well-aligned with objective performance on traditional memory assessments (i.e., word list-learning), which were adopted before disease-modifying therapies were available. We re-examined relationships between patient-reported memory and traditional objective measurement procedures (i.e., word-list-learning) versus story repetition, which may better reflect everyday memory demands and patterns of disease-related parietal atrophy.

Patient-reported memory was assessed with subjective memory surveys in a combined research (n=92) and retrospective chart review (n=258) sample of 350 MS patients aged 18-64 years (45.9±10.9 years; 256 women; 9.5±8.3 years diagnosed). Objective memory was assessed with immediate repetition of two stories (Wechsler Logical Memory), immediate and delayed recall of a 12-item word list (HVLT-R), and memory for visuospatial information (BVMT-R or CANTAB PAL). All variables were regression-adjusted for age, sex, education, and sample in initial analyses, and also depression in secondary analyses. Spearman correlations assessed links between patient-reported memory and objective memory performance. 
Worse subjective memory was more related to poorer story repetition (rho=.252, p<.001) than word-list-learning (rho=.159, p=.003); there was no relationship to visuospatial memory (rho=.039, p=.469). When additionally adjusting for depressive symptoms, subjective memory difficulty was still linked to worse story repetition (rho=.198, p<.001), but not word-list-learning (rho=.094, p=.080) or visuospatial memory (rho=.012, p=.819). These patterns remained when comparing objective performance across quartiles of patient-reported memory. 

Patient-reported memory difficulty was more related to story repetition than word-list-learning and visuospatial memory tests, and may therefore provide a more accurate representation of patients’ memory deficits in their daily life. The results also suggest a more complex picture of MS memory dysfunction as the result of subtle language-mediated deficits, which align with recent neuroimaging evidence identifying prominent early parietal cortical atrophy.

Authors/Disclosures
Colleen Marino, PhD
PRESENTER
No disclosure on file
James F. Sumowski (Icahn School of Medicine At Mount Sinai) Mr. Sumowski has nothing to disclose.