The primary purpose of this study is to determine whether AMG 333 is safe and well tolerated in healthy subjects and subjects with migraines. As part of the secondary objectives, this study will characterize the pharmacokinetic (PK) profile of AMG 333, as well as characterize the effect of AMG 333 on the cold pressor test (CPT)-induced increase in blood pressure after single oral doses in healthy subjects and subjects with migraines
This is a randomized, double-blind, placebo-controlled, ascending single-dose study evaluating AMG 333 in healthy subjects and subjects with migraines. The study will consist of 8 cohorts: 7 cohorts of healthy subjects and 1 cohort of subjects with migraines. For cohorts 1 to 7, 8 subjects each will be enrolled, and subjects will be randomized such that 6 subjects will receive AMG 333 and 2 subjects will receive placebo (3:1 ratio). In cohort 8, up to 24 subjects with migraines will be enrolled, depending on enrollment rate and emerging safety and tolerability data. These migraine subjects will be randomized to receive AMG 333 or placebo in a crossover fashion. Both healthy and migraine subjects will be monitored in house for 4 days then allowed to return home for the remainder of the 14 day observation period. Both healthy and migraine subjects will keep headache diaries.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
74
Research Site
Salt Lake City, Utah, United States
Primary
Treatment-emergent adverse events, including changes in vital signs, 12-lead ECGs, clinical laboratory safety tests, and physical and neurological assessments
Time frame: Up to 29 days
Primary
Headache assessment as measured by the occurrence of moderate-to-severe headache within 36 hours of treatment, as well as number of moderate-to-severe headaches within 4 days of dosing
Time frame: Up to 29 days
Secondary Outcome Measures
Time to maximum concentration \[Tmax\])
Time frame: Up to 29 Days
Secondary
Change in systolic and diastolic blood pressure in response to Cold Pressor Test (CPT)
Time frame: Up to 29 days
Secondary Outcome Measures
Area under the concentration-time curve from time 0 to the time of the last quantifiable concentration \[AUClast\]
Time frame: Up to 29 Days
Secondary Outcome Measures
Area under the concentration-time curve from time 0 extrapolated to infinity \[AUCinf\], maximum observed concentration \[Cmax\], and T1/2)
Time frame: Up to 29 Days
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