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Cognition and quality of life in clinically isolated syndrome patients starting a disease modifying therapy in the QUALICIS study may not predict treatment response at one year
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International audience. Cognition and health-related quality of life (HRQoL) are early involved in multiple sclerosis (MS). The aim of QUALICIS study was to monitor cognition and HRQoL prospectively in a cohort of clinically isolated syndrome (CIS) patients starting a treatment with subcutaneous beta-1b interferon as a first disease modifying treatment (DMT), and to assess their correlation with the clinical outcome 6 years later. Relapse history, EDSS and yearly standardized brain MRI data were also collected. 37 patients were included. Cognition and HRQoL remained stable over treatment period. At baseline, we found that SDMT was moderately correlated to T2 lesion load (r = − 0.47, p = 0.04). Baseline SDMT was predictive of HRQoL at year 2 (r = 0.53, p = 0.02). Regarding 6-year outcome, the most specific predictive factor of favorable outcome was achieving “No Evidence of Disease Activity” (NEDA) status at year 1. In this group, all the patients had a stable EDSS score and none switched to a second line therapy. In the “non-NEDA” group, 44% of patients experienced EDSS worsening and 38.9% switched to a second line therapy. The number of gadolinium enhancing lesions on baseline scan was the only predictive factor of poor outcome in this subgroup of patients (2 vs. 0.13, p = 0.03). Our results suggest that NEDA at 1 year could be used to predict long term outcome after initiation of DMT in CIS. For non-NEDA patients, monitoring SDMT and brain atrophy could be potentially relevant, but this should be confirmed on a larger sample. © 2017 Elsevier B.V.
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