期刊
JOURNAL OF CLINICAL PHARMACOLOGY
卷 60, 期 4, 页码 495-504出版社
WILEY
DOI: 10.1002/jcph.1543
关键词
5HT(1F); abuse potential; lasmiditan; migraine; serotonin
Lasmiditan is a centrally penetrant, highly selective 5-hydroxytryptamine (serotonin) receptor 1F (5HT(1F)) agonist under development as a novel therapy for acute treatment of migraine. A phase 1 randomized, placebo- and positive-controlled crossover study assessed the abuse potential of lasmiditan in adult recreational polydrug users. Following a qualification phase, subjects were randomized into treatment sequences, each consisting of 5 study treatments: placebo, alprazolam 2 mg, lasmiditan 100, 200 (lasmiditan 100 and 200 mg are proposed therapeutic doses), and 400 mg (supratherapeutic). The abuse potential of lasmiditan was investigated and compared with alprazolam and with placebo using the maximal effect score (E-max) of the Drug-Liking Visual Analog Scale as the primary end point. Lasmiditan was not similar to placebo in drug-liking scores at all doses tested, with a maximum difference observed with the lasmiditan 400-mg dose (upper 90% confidence limit on difference in least-squares [LS] means > 14 for all lasmiditan doses). Drug-liking scores for lasmiditan 400 mg were not significantly different from alprazolam (lower 90% confidence limit on difference in LS means < 5), but drug-liking scores at lower doses (100 and 200 mg) were significantly different from alprazolam. During the treatment phase, the incidence of treatment-emergent adverse events (TEAEs) increased with increasing dose of lasmiditan; all TEAEs reported with lasmiditan treatment were mild. Subjective drug-liking effects for lasmiditan versus placebo and versus alprazolam, and the safety and tolerability profile of lasmiditan suggest that lasmiditan has a low potential for abuse.
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