This study is designed to evaluate the pharmacokinetics of rasagiline in healthy Japanese and Caucasian subjects after single and multiple doses of rasagiline.
This is a single-center, double-blind, placebo-controlled, randomized study in healthy Japanese and Caucasian subjects after administration of single and multiple doses of rasagiline. All subjects will have a screening visit within 28 days of their check-in day (day -1) to confirm eligibility. Eligible subjects will be admitted to the investigational center on study day -1 and their eligibility to participate in the study confirmed. On the morning of day 1, subjects will be randomly assigned to receive a daily dose of 0.5, 1, or 2 mg of rasagiline or placebo at the same time every morning after an overnight fast (of at least 10 hours) on days 1 through 10. Venous blood samples (4 mL each) for pharmacokinetic analysis will be collected at specified time points through 24 hours after study drug administration on day 1 and through 48 hours after study drug administration on day 10. The duration of study participation for each subject will be approximately 6 weeks.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
64
Each subject will be enrolled into 1 of 4 cohorts: * cohort 1 (16 Japanese subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo * cohort 2 (16 Caucasian subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo * cohort 3 (16 Japanese subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo * cohort 4 (16 Caucasian subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo Each subject will then be randomly assigned to 1 of the following groups: * rasagiline at 0.5 mg (8 Japanese and 8 Caucasian subjects) * rasagiline at 1 mg (8 Japanese and 8 Caucasian subjects) * rasagiline at 2 mg (8 Japanese and 8 Caucasian subjects) * placebo (8 Japanese and 8 Caucasian subjects)
Each subject will be enrolled into 1 of 4 cohorts: * cohort 1 (16 Japanese subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo * cohort 2 (16 Caucasian subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo * cohort 3 (16 Japanese subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo * cohort 4 (16 Caucasian subjects): 4 subjects each for 0.5, 1, and 2 mg of rasagiline and placebo Each subject will then be randomly assigned to 1 of the following groups: * rasagiline at 0.5 mg (8 Japanese and 8 Caucasian subjects) * rasagiline at 1 mg (8 Japanese and 8 Caucasian subjects) * rasagiline at 2 mg (8 Japanese and 8 Caucasian subjects) * placebo (8 Japanese and 8 Caucasian subjects)
Teva Investigational Site 10738
Glendale, California, United States
Cmax
Time frame: At Baseline through Day 10
Tmax
Time frame: At Baseline through Day 10
AUC from time 0 to the time of the last measurable drug concentration (AUC0-t)
AUC 0-t will be calculated after administration of a single dose of rasagiline.
Time frame: At Baseline to Day 1
AUC from time 0 to infinity (AUC∞)
AUC∞ will be calculated after administration of a single dose of rasagiline.
Time frame: At Baseline to Day 1
Percentage extrapolated AUC (%AUCext)
%AUCext will be calculated after administration of a single dose of rasagiline.
Time frame: At Baseline to Day 1
Apparent plasma terminal elimination rate constant (λz)
Time frame: At Baseline to Day 10
Associated elimination half life (t½)
Time frame: At Baseline to Day 10
AUC over the dosing interval at steady state (AUCτ)
Time frame: At Baseline to Day 10
Minimum measured plasma concentration at steady state by inspection (Cmin,ss)
minimum measured plasma concentration at steady state by inspection (Cmin,ss) (multiple dose \[predose concentrations on days 8 and 9\]))
Time frame: From Baseline to Day 10
Average plasma concentration at steady state (Cav,ss)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
The average plasma concentration at steady state (Cav,ss) is obtained by the calculation: AUCτ/τ, where tau is the dosing interval
Time frame: From Baseline to Day 10
Fluctuation at steady state
Fluctuation at steady state, calculated as (Cmax,ss-Cmin,ss)/Cav,ss
Time frame: From Baseline to Day 10
Steady-state accumulation ratio (Rss)
Steady-state accumulation ratio (Rss) calculated as (AUCτ/AUC∞)
Time frame: From Baseline to Day 10
Apparent total body clearance (CL/F)
Time frame: From Baseline to Day 10
Apparent total volume of distribution (V/F)
Time frame: From Baseline to Day 10
Concentrations of 1-aminoindan
The concentrations of rasagiline major metabolite, 1-aminoindan, in plasma will be calculated, if possible.
Time frame: Day 1 to Day 11
Peripheral monoamine oxidase B (MAOB)
The pharmacodynamics of rasagiline will be assessed by measuring the extent of peripheral monoamine oxidase B (MAOB) inhibition after multiple-dose administration of rasagiline, calculated as the percentage of the baseline platelet MAO-B activity.
Time frame: Day 1 to Day 11
Occurrence of Adverse Events
Adverse events, clinical laboratory test results, vital signs measurements, physical examinations, 12- lead electrocardiogram (ECG) findings, and use of concomitant medications will be assessed throughout the study.
Time frame: From informed consent signing to end of study (Day 12)