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  • Title: Effects of fremanezumab on migraine-associated symptoms and medication use in Japanese and Korean patients with episodic migraine: Exploratory endpoint analysis of a multicenter, randomized, double-blind, placebo-controlled trial.
    Author: Tatsumoto M, Ishida M, Iba K, Kim BK, Ning X, Osawa C, Nakai M, Kurita Y.
    Journal: Headache; 2024 Sep 02; ():. PubMed ID: 39221611.
    Abstract:
    OBJECTIVE: To describe exploratory endpoints from a previous phase 2b/3 placebo-controlled trial conducted in Japan and Korea, specifically investigating the effect of fremanezumab or placebo on migraine-associated symptoms and acute headache medication use in patients with episodic migraine (EM). BACKGROUND: EM is associated with non-head pain symptoms, including nausea, vomiting, photophobia, or phonophobia, which contribute substantially to the disease burden, healthcare resource utilization, and impaired quality of life. Current EM treatments include a mix of nonspecific/migraine-specific acute headache medications, but medication overuse can induce headaches and progression from EM to chronic migraine (CM). In multiple phase 2b/3 trials, the monoclonal antibody fremanezumab significantly reduced the average number of monthly migraine days experienced by patients with EM/CM compared with placebo. METHODS: This was a prespecified analysis of exploratory endpoints in a multicenter, randomized, double-blind, placebo-controlled, phase 2b/3 trial conducted in Japanese and Korean patients with EM (NCT03303092). Patients were randomized to receive fremanezumab, either monthly or quarterly, or matching placebo, administered subcutaneously at 4-week/28-day ("monthly") intervals to maintain blinding. Exploratory endpoints reported here were the mean change from baseline in the number of days/month with (i) the use of any acute headache medication, (ii) the use of any migraine-specific acute headache medication, (iii) nausea or vomiting, and (iv) photophobia and phonophobia. RESULTS: Overall, 357 Japanese and Korean patients with EM received either monthly (n = 121) or quarterly (n = 119) fremanezumab or placebo (n = 117). Compared with placebo, fremanezumab administered monthly or quarterly was associated with a significant reduction from baseline in the average number of days/month with acute headache medication use over three months (difference vs. placebo -2.81 [95% confidence interval (CI) -3.52, -2.11]; p < 0.001 and -2.79 [95% CI -3.50, -2.08]; p < 0.001, respectively). Similar findings were observed in the monthly average number of days with migraine-specific acute headache medications (difference vs. placebo with monthly and quarterly fremanezumab, -2.63 [95% CI -3.31, -1.95] for both; p < 0.001), the average number of days/month with nausea or vomiting (difference vs. placebo -1.09 [95% CI -1.60, -0.58]; p < 0.001 for monthly fremanezumab and -1.37 [95% CI -1.88, -0.86]; p < 0.001 for quarterly fremanezumab), and the average number of days with photophobia and phonophobia (difference vs. placebo -1.22 [95% CI -1.80, -0.65]; p < 0.001 and -1.64 [95% CI -2.22, -1.06]; p < 0.001, respectively). CONCLUSION: Monthly and quarterly administered fremanezumab effectively prevented EM in Japanese and Korean patients. Fremanezumab also improved other disease aspects including the need for acute headache medications and the frequency of migraine-associated symptoms.
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