Eletriptan for the acute treatment of migraine: results of bridging a Japanese study to western clinical trials
2004
SUMMARYObjective: To compare the efficacy, safety and tolerability of eletriptan (20,40 and 80 mg) to placebo when given to Japanese and Western patients for the acute treatment of migraine.Methods: A double-blind, randomized, parallel-group trial with the aforementioned therapeutic objectives was conducted in Japan (N = 321). By bridging analysis, data from this study were compared to two migraine trials previously conducted in the US (N = 1190) and Europe (N = 563).Results: The 2-h post-dose headache response rates (i.e., the primary efficacy endpoint) of Japanese migraineursto eletriptan 20, 40 and 80 mg were 64, 67 and 76%, respectively; European and American migraineurs showed similar trends and, in these studies, eletriptan was significantly superior to placebo (p <0.05). Japanese patients did demonstrate a higher placebo response than Westerners, possibly due to differences in previous triptan exposure or expectation. Adverse events were generally mild to moderate, were comparable in all three stud...
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