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Objective: To assess the onset of efficacy for fremanezumab in chronic migraine by evaluating pain‐related clinical measures at different time points. Background: Faster onset of efficacy of preventive treatments could benefit patients with migraine. Fremanezumab is a fully humanized monoclonal antibody that selectively targets calcitonin gene‐related peptide, a neuropeptide involved in the pathophysiology of migraine. In 12‐week clinical trials, subcutaneous fremanezumab significantly reduced the frequency of migraine headaches, headache hours, and headaches in general, without serious treatment‐related adverse events. New drug classes of migraine preventive treatment demonstrate markedly different clinical profiles from standard‐of‐care treatments. Methods: In this double‐blind phase III study, eligible patients were randomized 1:1:1 to receive subcutaneous injections of fremanezumab quarterly (675 mg at baseline, placebo at weeks 4 and 8), fremanezumab monthly (675 mg at baseline, 225 mg at weeks 4 and 8), or placebo at each time point. This study included secondary, exploratory, and post hoc analyses of the primary trial, evaluating the change in headache days of at least moderate severity or migraine days during the first 4 weeks of the trial. Results: A total of 1130 patients were randomized (fremanezumab quarterly, n = 376; fremanezumab monthly, n = 379; or placebo, n = 375). During the 4‐week period after the first dose, the mean number of monthly headache days of at least moderate severity was reduced for the all‐fremanezumab group (mean reduction [95% confidence interval]: −4.6 days [−5.1, −4.1]) compared with the placebo group (−2.3 days [−2.9, −1.6]; P < .0001). Treatment effects were observed at Week 1 for the all‐fremanezumab group (−1.1 days [−1.3, −1.0]) vs placebo (−0.5 days [−0.7, −0.3]; P < .0001), with separation from placebo by Day 2 (P = .003). Similar effects were observed for the monthly average number of migraine days and mean number of monthly headache hours. Conclusions: The early onset of efficacy of fremanezumab may have the potential to improve patient compliance and clinical outcomes. [ABSTRACT FROM AUTHOR]

Importance: Fremanezumab, a fully humanized monoclonal antibody that targets calcitonin gene-related peptide, may be effective for treating episodic migraine.Objective: To assess the efficacy of fremanezumab compared with placebo for prevention of episodic migraine with a monthly dosing regimen or a single higher dose.Design and Setting: Randomized, double-blind, placebo-controlled, parallel-group trial conducted at 123 sites in 9 countries from March 23, 2016 (first patient randomized), to April 10, 2017, consisting of a screening visit, 28-day pretreatment period, 12-week treatment period, and final evaluation at week 12.Participants: Study participants were aged 18 to 70 years with episodic migraine (6-14 headache days, with at least 4 migraine days, during 28-day pretreatment period). Patients who had previous treatment failure with 2 classes of migraine-preventive medication were excluded.Interventions: Patients were randomized 1:1:1 to receive subcutaneous monthly dosing of fremanezumab (n = 290; 225 mg at baseline, week 4, and week 8); a single higher dose of fremanezumab, as intended to support a quarterly dose regimen (n = 291; 675 mg of fremanezumab at baseline; placebo at weeks 4 and 8); or placebo (n = 294; at baseline, week 4, and week 8).Main Outcomes and Measures: The primary end point was mean change in mean number of monthly migraine days during the 12-week period after the first dose.Results: Among 875 patients who were randomized (mean age, 41.8 [SD, 12.1] years; 742 women [85%]), 791 (90.4%) completed the trial. From baseline to 12 weeks, mean migraine days per month decreased from 8.9 days to 4.9 days in the fremanezumab monthly dosing group, from 9.2 days to 5.3 days in the fremanezumab single-higher-dose group, and from 9.1 days to 6.5 days in the placebo group. This resulted in a difference with monthly dosing vs placebo of -1.5 days (95% CI, -2.01 to -0.93 days; P < .001) and with single higher dosing vs placebo of -1.3 days (95% CI, -1.79 to -0.72 days; P < .001). The most common adverse events that led to discontinuation were injection site erythema (n = 3), injection site induration (n = 2), diarrhea (n = 2), anxiety (n = 2), and depression (n = 2).Conclusions and Relevance: Among patients with episodic migraine in whom multiple medication classes had not previously failed, subcutaneous fremanezumab, compared with placebo, resulted in a statistically significant 1.3- to 1.5-day reduction in the mean number of monthly migraine days over a 12-week period. Further research is needed to assess effectiveness against other preventive medications and in patients in whom multiple preventive drug classes have failed and to determine long-term safety and efficacy.Trial Registration: clinicaltrials.gov Identifier: NCT02629861. [ABSTRACT FROM AUTHOR]

Background: Fremanezumab, a fully humanized monoclonal antibody targeting calcitonin gene-related peptide, has demonstrated efficacy for the preventive treatment of migraine in adults. Objective: To evaluate the effect of fremanezumab treatment on acute headache medication use and migraine-associated symptoms in patients with episodic migraine. Methods: In the Phase 3 HALO trial, patients with episodic migraine were randomized to receive subcutaneous fremanezumab monthly (225 mg at baseline, weeks 4 and 8), fremanezumab quarterly (675 mg at baseline, placebo at weeks 4 and 8), or placebo over a 12-week period. The secondary endpoint was change from baseline in the monthly number of days with use of any acute headache mediation or migraine-specific acute headache medication; exploratory endpoints were change from baseline in the monthly number of days with nausea or vomiting, photophobia, or phonophobia. Results: Of 875 patients randomized, 865 were included in the analysis (monthly, n = 287; quarterly, n = 288; placebo, n = 290). Baseline mean ± standard deviation days with: Any acute headache medication use (monthly: 7.7 ± 3.4; quarterly: 7.8 ± 3.7; placebo: 7.7 ± 3.6), migraine-specific acute headache medication use (6.1 ± 3.1; 6.6 ± 3.1; 7.1 ± 3.0), nausea or vomiting (4.5 ± 3.6; 4.9 ± 3.7; 4.5 ± 3.3) and photophobia and phonophobia (5.5 ± 4.1; 6.3 ± 4.1; 6.0 ± 3.9) were similar among treatment arms. Fremanezumab reduced the number of days of acute headache medication use ([least-squares mean change vs. placebo] monthly: −1.4 [95% confidence interval: −1.84, −0.89], p < 0.001; quarterly: −1.3 [−1.76, −0.82], p < 0.001) and migraine-specific acute headache medication use (monthly: −2.2 [−2.80, −1.56], p < 0.001; quarterly: −2.2 [−2.81, −1.58], p < 0.001) compared with placebo. Fremanezumab also reduced nausea or vomiting, photophobia, and phonophobia compared with placebo. Conclusions: Fremanezumab reduced the need for acute headache medications, including migraine-specific medications, while treating migraine-associated symptoms in patients with episodic migraine. Trial registration: Clinicaltrials.gov NCT02629861 [ABSTRACT FROM AUTHOR]