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  • Title: 311C90, a new central and peripherally acting 5-HT1D receptor agonist in the acute oral treatment of migraine: a double-blind, placebo-controlled, dose-range finding study.
    Author: Visser WH, Klein KB, Cox RC, Jones D, Ferrari MD.
    Journal: Neurology; 1996 Feb; 46(2):522-6. PubMed ID: 8614525.
    Abstract:
    311C90 is a novel, centrally and peripherally, acting 5-hydroxytryptamine1D receptor agonist. We investigated the efficacy and safety of 1, 5, and 25 mg of oral 311C90 in the acute treatment of migraine in a randomized, double-blind, placebo-controlled, parallel-group clinical trial involving 84 patients. The proportion of patients in whom the headache improved within 2 hours from moderate or severe to mild or no pain (primary efficacy measure) was 15% for placebo-treated patients and 27% (1 mg), 62% (5 mg), and 81% (25 mg) for patients treated with 311C90. Treatment differences compared with placebo were 12% (95% CI - 12, 37; p = 0.460) for 1 mg 311C90, 47% (CI 21, 73; p < 0.005) for 5 mg 311C90, and 66% (CI 43,89; p < 0.001) for 25 mg 311C90. Photophobia and nausea also showed improvement after 311C90. Adverse events were generally mild and transient in all treatment groups. There were no clinically significant changes in ECG recordings, blood pressure, or laboratory tests. Oral 311C90 (5 and 25 mg) is highly effective and well tolerated in the acute treatment of migraine. The response rates and treatment differences compared with placebo in this study suggest possible superiority over existing antimigraine therapies. This needs to be confirmed in formal comparative trials.
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