Erenumab in chronic migraine: Patient-reported outcomes in a randomized double-blind study


To determine the effect of erenumab, a human monoclonal antibody targeting the calcitonin gene-related peptide receptor, on health-related quality of life (HRQoL), headache impact, and disability in patients with chronic migraine (CM).


In this double-blind, placebo-controlled study, 667 adults with CM were randomized (3:2:2) to placebo or erenumab (70 or 140 mg monthly). Exploratory endpoints included migraine-specific HRQoL (Migraine-Specific Quality-of-Life Questionnaire [MSQ]), headache impact (Headache Impact Test–6 [HIT-6]), migraine-related disability (Migraine Disability Assessment [MIDAS] test), and pain interference (Patient-Reported Outcomes Measurement Information System [PROMIS] Pain Interference Scale short form 6b).


Improvements were observed for all endpoints in both erenumab groups at month 3, with greater changes relative to placebo observed at month 1 for many outcomes. All 3 MSQ domains were improved from baseline with treatment differences for both doses exceeding minimally important differences established for MSQ–role function-restrictive (≥3.2) and MSQ–emotional functioning (≥7.5) and for MSQ–role function-preventive (≥4.5) for erenumab 140 mg. Changes from baseline in HIT-6 scores at month 3 were –5.6 for both doses vs –3.1 for placebo. MIDAS scores at month 3 improved by –19.4 days for 70 mg and –19.8 days for 140 mg vs –7.5 days for placebo. Individual-level minimally important difference was achieved by larger proportions of erenumab-treated participants than placebo for all MSQ domains and HIT-6. Lower proportions of erenumab-treated participants had MIDAS scores of severe (≥21) or very severe (≥41) or PROMIS scores ≥60 at month 3.


Erenumab-treated patients with CM experienced clinically relevant improvements across a broad range of patient-reported outcomes. identifier


Classification of evidence

This study provides Class II evidence that for patients with CM, erenumab treatment improves HRQoL, headache impact, and disability.

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