Emgality was studied in patients with episodic or chronic migraine in a 12-month, Phase 3 trial1
The trial was a 12-month, open-label, multicenter study assessed primarily for safety and tolerability and, secondarily, for effectiveness in patients with episodic or chronic migraine1
Patient population (N=270)1
- 79% of patients enrolled were diagnosed with episodic migraine
- 21% of patients enrolled were diagnosed with chronic migraine
- Patients 18 to 65 years of age
- Migraine was defined as:
- Meeting International Classification of Headache Disorders-3 beta (ICHD-3 beta) criteria for diagnosis
- A history of at least 1 year of migraine headaches
- Migraine onset prior to 50 years of age
- A history of ≥4 MHDs per month, on average, for 3 months prior to study entry
- A history of at least 1 headache-free day per month for 3 months prior to study entry
Exclusion criteria1
- Patients with prior exposure to Emgality or any other calcitonin gene-related peptide (CGRP) antibody treatment
- Patients on any antibody therapy 12 months prior to study entry
- Patients on a migraine preventive treatment
- Patients who failed on ≥3 classes of migraine preventive treatments (as defined by the American Academy of Neurology treatment guidelines Level A or Level B evidence)
- Patients with certain medical conditions, including pregnancy, suicidal ideation within 1 month prior to study entry, and substance abuse or dependence within 1 year of study entry
- Patients with acute cardiovascular events and/or serious cardiovascular events based on history or electrocardiogram (ECG) findings
Study Period 1 (3-45 days)1
- Initial screening procedures
- Washout of all migraine preventive treatments
Study Period 2 (open-label treatment period)1,8
- Patients were randomized to once-monthly Emgality 120 mg (N=135) or Emgality 240 mg (N=135) for 12 doses total
- Patients on Emgality 120 mg received an initial loading dose of 240 mg and all subsequent doses were 120 mg
- Patients on Emgality 240 mg received 240 mg each month. 240 mg is not an approved dose
- Acute medicationsa (ie, triptans, ergots, nonsteroidal anti-inflammatory drugs [NSAIDs], and acetaminophen) for the treatment of migraine were allowed
- Treatment was delivered by prefilled syringe or autoinjector by patients or caregivers (after appropriate training)
- Patients kept track of their headaches (migraine and non-migraine) and use of medication taken for acute treatment of migraine and non-migraine headache for the last 30 days, every month of the 12-month study
- Patients were required to report a migraine headache, headache, or the use of acute medication on a daily basis with a diary or log for monthly review
Study Period 3 (washout phase)1
- Patients no longer received treatment, but continued to track headache information and received safety assessments for 4 months in the post-treatment period
Prespecified key endpoints1
- Primary endpoint: Safety and tolerability of Emgality for up to 1 year of treatment
- Secondary endpoint: Effectiveness of Emgality as assessed by the overall mean change from baseline and mean percentage of patients with ≥50%, ≥75%, and 100% reduction from baseline in the number of monthly MHDs over 12 months of treatment1
These are observations from the 12-month, open-label safety study of which efficacy measures were a secondary endpoint. Data from the open-label safety study have limitations, as the study was not blinded or placebo-controlled. Results should be viewed with these factors in mind.1
aExcept opiods and barbiturates taken more than 3 times per month.
SELECT IMPORTANT SAFETY INFORMATION
Hypersensitivity Reactions
Hypersensitivity reactions, including dyspnea, urticaria, and rash, have occurred with Emgality in clinical studies and the postmarketing setting. Cases of anaphylaxis and angioedema have also been reported in the postmarketing setting. If a serious or severe hypersensitivity reaction occurs, discontinue administration of Emgality and initiate appropriate therapy. Hypersensitivity reactions can occur days after administration and may be prolonged.