Phillips G, Guo S, Bender R, Havrdova E, Prokorovsky I, Vollmer T. Assessing the impact of multiple sclerosis disease activity and daclizumab HYP treatment on patient-reported outcomes: results from the SELECT trial. Mult Scler J Exp Transl Clin. 2016 Mar;6:66-72. doi: 10.1016/j.msard.2016.02.001

BACKGROUND: The SELECT study demonstrated superior effects of daclizumab high-yield process (DAC HYP) to placebo in key endpoints in patients with relapsing and remitting multiple sclerosis (RRMS).

OBJECTIVE: To assess the impact of DAC HYP and disease activity on health-related quality of life (HRQoL) using data from this study.

METHODS: HRQoL was assessed at baseline, 12, 24, and 52 weeks using the Multiple Sclerosis Impact Scale (MSIS-29), the 12-items Short Form Health Survey, and the EuroQoL-5 Dimensions. An analysis of covariance model was used to compare treatment difference in change from baseline. Mixed-effects models were used to assess the impact of disability progression, relapse, treatment, and interaction between treatment and these events on HRQoL outcome.

RESULTS: DAC HYP 150mg resulted in significant positive impacts on HRQoL compared to placebo. It was also found to significantly reduce the adverse impact of relapse on the MSIS-29 physical scale (-12.45; p=0.0006). Relapse and disability progression were significantly associated with impaired HRQoL.

DAC HYP 150mg improved HRQoL in patients with RRMS compared to placebo. The treatment benefit can be partially attributed to reduction in disease activity and attenuation of the adverse impact of relapse on HRQoL.

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