Abstract
BackgroundGalcanezumab, a humanized monoclonal antibody that selectively binds to calcitonin gene-related peptide, has demonstrated a significant reduction in monthly migraine headache days in phase 2 and 3 trials. In these analyses, we aimed to evaluate the safety and tolerability of galcanezumab compared with placebo for prevention of episodic or chronic migraine.MethodsData were integrated from three double-blind clinical studies for the up to 6-month galcanezumab exposure group (N = 1435), and from five clinical studies for the up to 1-year all-galcanezumab exposure group (N = 2276). Patients received a monthly 120 mg subcutaneous injection of galcanezumab (with a 240 mg loading dose in month 1), 240 mg galcanezumab, or placebo. Outcomes measured were treatment-emergent adverse events (TEAEs), serious AEs (SAEs), and discontinuation due to AEs (DCAEs). Laboratory results, vital signs, electrocardiogram (ECG), suicidal ideation and behavior results were evaluated.ResultsTEAEs that occurred more frequently in galcanezumab-treated patients included injection site pain, injection site reactions excluding pain, constipation, vertigo, and pruritus. The proportion of DCAEs among galcanezumab-treated patients ranged between 1.8 and 3.0%, and differed from placebo group for galcanezumab 240 mg (P < 0.05). Fewer than 2.0% of patients in either galcanezumab dose-group compared with 1.0% of placebo-treated patients reported a SAE. There were no clinically meaningful differences between galcanezumab and placebo in laboratory measures, vital signs including blood pressure, ECGs, cardiovascular-related AEs, or suicidal ideation and behavior.ConclusionsGalcanezumab demonstrated a favorable safety and tolerability profile for up to 1 year of treatment for the prevention of migraine.Trial registrationClinical Trials CGAB = NCT02163993, EVOLVE-1 = NCT02614183, EVOLVE-2 = NCT02614196, REGAIN = NCT02614261, and CGAJ = NCT02614287. All were first posted on 25 November 2015, except CGAB posted on 16 June 2014, and before enrolling the first patient.
Highlights
Galcanezumab, a humanized monoclonal antibody that selectively binds to calcitonin gene-related peptide, has demonstrated a significant reduction in monthly migraine headache days in phase 2 and 3 trials
Galcanezumab is a humanized monoclonal antibody that is approved for the preventive treatment of migraine and the treatment of episodic cluster headache to reduce the frequency of migraine headaches and cluster headache attacks; it potently and selectively binds Calcitonin gene-related peptide (CGRP) preventing its biological activity without blocking the CGRP receptor [15]
Phase 2 and 3 migraine prevention studies showed that galcanezumab reduced monthly migraine headache days and had a favorable short-term safety and tolerability compared with placebo [16,17,18,19,20,21,22,23,24]
Summary
Galcanezumab, a humanized monoclonal antibody that selectively binds to calcitonin gene-related peptide, has demonstrated a significant reduction in monthly migraine headache days in phase 2 and 3 trials. In these analyses, we aimed to evaluate the safety and tolerability of galcanezumab compared with placebo for prevention of episodic or chronic migraine. Calcitonin gene-related peptide (CGRP), found in a variety of anatomical locations, has a diverse role, and evidence of its presence during migraine attacks has been established [1,2,3,4]. Phase 2 and 3 migraine prevention studies showed that galcanezumab reduced monthly migraine headache days and had a favorable short-term safety and tolerability compared with placebo [16,17,18,19,20,21,22,23,24]
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