Conditions: Migraine
Keywords: Migraine Headache Prevention Prophylaxis
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 955
Healthy volunteers: no

Brief summary:
The primary objective of the study was to evaluate the effect of erenumab compared to placebo on the change from baseline in monthly migraine days.

Detailed description:
This was a multicenter, randomized, double-blind, placebo-controlled, parallel-group trial. The trial consisted of four phases: screening (≤ 3 weeks of initial screening and a 4-week baseline phase); the double-blind treatment phase (24 weeks) in which participants received placebo or erenumab 70 mg or 140 mg daily; the active-treatment phase, in which participants underwent repeat randomization and were assigned to receive 70 mg or 140 mg of erenumab (28 weeks); and a safety follow-up phase (12 weeks).

Arms:
arm 1: Participants received placebo once a month (QM) by subcutaneous injection on day 1 and weeks 4, 8, 12, 16, and 20 in the 24-week double-blind treatment phase. At week 24, participants were re-randomized to receive either erenumab 70 mg or erenumab 140 mg, administered QM at weeks 24, 28, 32, 36, 40, 44, and 48, with actual dose blinded. arm 2: Participants received erenumab 70 mg QM by subcutaneous injection on day 1 and weeks 4, 8, 12, 16, and 20 in the 24-week double-blind treatment phase. At week 24, participants were re-randomized to receive either erenumab 70 mg or erenumab 140 mg, administered QM at weeks 24, 28, 32, 36, 40, 44, and 48, with actual dose blinded. arm 3: Participants received erenumab 140 mg QM by subcutaneous injection on day 1 and weeks 4, 8, 12, 16, and 20 in the 24-week double-blind treatment phase. At week 24, participants were re-randomized to receive either erenumab 70 mg or erenumab 140 mg, administered QM at weeks 24, 28, 32, 36, 40, 44, and 48, with actual dose blinded.

Interventions: intervention 1: Erenumab intervention 2: Placebo
Intervention descriptions: intervention 1: Administered by subcutaneous injection once a month intervention 2: Administered by subcutaneous injection once a month

Protocol document: