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Ford, Janet; Tassorelli, Cristina; Leroux, Elizabeth; Wang, Shufang; Ayer, David; Nichols, Russell; Detke, Holland
Quality of life research, 01/2021, Volume: 30, Issue: 1Journal Article
Purpose To evaluate secondary outcomes including changes in functioning and disability associated with galcanezumab, a humanized monoclonal antibody to calcitonin gene-related peptide, in patients with chronic migraine. Methods Patients randomly received galcanezumab (120 mg n = 278, 240 mg n = 277) or placebo ( n = 558) during 3 months of double-blind treatment, followed by a 9-month open-label extension. The Migraine-Specific Quality-of-Life Questionnaire v2.1 (MSQv2.1) measured the impact of migraine on patient functioning. The Migraine Disability Assessment (MIDAS) quantified headache-related disability. Changes from baseline were analyzed with mixed model repeated measures or analysis of covariance. Results Total MSQ score at baseline was 44.88 ± 18.02 (mean ± SD), indicating significant functional impairment. At Month 3, least squares (LS) mean change ± SE in total MSQ for galcanezumab-treated patients were 20.51 ± 1.49 (120 mg) and 20.49 ± 1.49 (240 mg), both statistically significantly greater vs placebo-treated patients (14.55 ± 1.21; both P < 0.001). Total MIDAS score at baseline was 67.24 ± 57.31 (mean ± SD). At Month 3, LS mean change ± SE from baseline in total MIDAS for galcanezumab-treated patients was statistically significantly greater than placebo for 120 mg group (placebo: − 11.53 ± 3.38 vs 120 mg: − 20.27 ± 4.07; P < 0.05) but not for 240 mg group (− 17.02 ± 4.05). At Month 12, within-group mean changes from baseline for total MSQ (28.56 ± 1.19 previous placebo; 29.53 ± 1.51 previous 120 mg; 25.83 ± 1.49 previous 240 mg) and MIDAS scores (− 28.47 ± 2.95 previous placebo; − 31.47 ± 3.69 previous 120 mg; − 31.13 ± 3.62 previous 240 mg) were statistically significant ( P < 0.001) for the open-label treatment population regardless of previous double-blind treatment assignment. Conclusions Galcanezumab-treated patients with chronic migraine reported statistically significant improvements in functioning and disability, representing a clinically significant change. Trial registration ClinicalTrials.gov registry: NCT02614261. Registered 25 November 2015.
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