Effect of Galcanezumab Following Treatment Cessation in Patients With Migraine: Results From 2 Randomized Phase 3 Trials

Abstract

Objective: We examined the efficacy and safety of galcanezumab after treatment cessation in randomized double-blind, placebo-controlled, migraine prevention studies (EVOLVE-1; EVOLVE-2). Background: Galcanezumab is indicated for migraine prevention in adults. Methods: Adults with episodic migraine were enrolled into EVOLVE-1 and EVOLVE-2, which randomized 858 and 915 patients, respectively, to galcanezumab 120 mg (an initial 240-mg loading dose), galcanezumab 240 mg, or placebo, administered subcutaneously once monthly for 6 months. After treatment completion or discontinuation, patients entered a 4-month posttreatment period. Efficacy and safety from the posttreatment periods are reported. Results: Overall, 740 patients (EVOLVE-1) and 830 (EVOLVE-2) patients entered the posttreatment periods, about 95% and 96% of patients, respectively, completed. In EVOLVE-1, change from pre-randomization baseline in monthly migraine headache days decreased over the posttreatment period from (mean [SE]) 5.2 (0.4) days (Month 6) to 4.1 (0.4) days (Month 10) for 120 mg and from 5.3 (0.4) days (Month 6) to 3.8 (0.4) days (Month 10) for 240 mg, and was stable for placebo (3.4 [0.3] days [Month 6] to 3.3 [0.3] days [Month 10]); differences between each galcanezumab dose group and placebo were statistically significant at each month, except for galcanezumab 240 mg at Month 10 (120 mg vs placebo: P