Parkinson's Disease Clinical Trial
Official title:
A Pharmacodynamics and Safety Study of DSP-9632P in Patients With Levodopa-Induced Dyskinesia in Parkinson's Disease
This study is an open-label of single transdermal dose of DSP-9632P to evaluate the dopamine release derived from levodopa in brain, and a randomized, double-blind, placebo-controlled, 2-way crossover of multiple transdermal doses of DSP-9632P to evaluate the safety and tolerability in patients with levodopa-induced dyskinesia in Parkinson's disease.
This study consists of Part A and Part B. Part A is an open-label part to evaluate the amount of striatal dopamine release derived from levodopa following single transdermal administration of DSP-9632P using 11Craclopride PET in patients with levodopa-induced dyskinesia in Parkinson's disease. Part A consists of screening, Period 1, Period 2, Period 3, Period 4, and follow-up period. Each period consists of 2 days, Day 1 and Day 2. There will be a 7-day or longer washout of DSP-9632P between Periods 3 and 4. Subjects will be hospitalized in each period. Part B is a randomized, double-blind, placebo-controlled, crossover part to evaluate the safety and tolerability of DSP-9632P following multiple transdermal administration in patients with levodopa-induced dyskinesia in Parkinson's disease. Part B consists of screening, placebo lead-in period, baseline period, Period 1, Period 2, and follow-up period. Period 1 and Period 2 consist of 9 days. Subjects will be hospitalized for 10 days 9 nights from baseline period to Period 1 and for 9 days 8 nights in Period 2. There will be a 7-day or longer washout of DSP-9632P between Periods 1 and 2. Subjects will concomitantly use any of the levodopa formulation from the time of informed consent to the end of study. ;
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