Conditions: Parkinson Disease Parkinson's Disease
Keywords: Ropinirole hydrochloride L-dopa Parkinson's Disease Dopamine agonist
Allocation: NON_RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 123
Healthy volunteers: no

Brief summary:
Ropinirole Hydrochloride (ROP) was granted approval for the treatment of Parkinson's Disease (PD) on 20 October 2006.

ROP is expected to be used for a long term in clinical practice. However, no long-term clinical data with ROP administered three times daily are currently available from Japanese patients, and the clinical experience with ROP at \>10mg/day is limited.

For this reason, this study was designed as a multicenter open-label uncontrolled study.

This study will evaluate the long-term efficacy (Japanese Unified Parkinson's Disease Rating Scale (UPDRS), Awake time spent "Off"/"On", Modified Hoehn \& Yahr stage, Schwab-England scale, Proportion of subjects remaining in this study and Clinical Global Impression (CGI)) and the long-term safety of ROP administered three times daily for in PD patients.

Detailed description:

Arms:
arm 1: None

Interventions: intervention 1: ROP intervention 2: ROP+L-Dopa
Intervention descriptions: intervention 1: Ropinirole Hydrochloride monotherapy group (ROP): Patients will receive ROP tablets 3 times daily. In the 4-week Fixed Titration Phase (from Week 0 as Baseline), the dose will start at 0.75 mg/day and will be increased weekly by 0.75 mg/day up to 3.0 mg/day. In the 48-week Flexible Titration and Maintenance Phase, the dose will be increased by 1.5 mg/day at intervals of at least 1 week up to a maximum of 15.0 mg/day. The dose will be maintained at a level without further symptomatic improvement is expected. Concomitant use of L-dopa is prohibited during the study. intervention 2: Ropinirole Hydrochloride with L-Dopa adjunct therapy group (ROP+L-Dopa): Patients will receive ropinirole hydrochloride (ROP) tablets 3 times daily. In the 4-week Fixed Titration Phase (from Week 0 as Baseline), the dose will start at 0.75 milligrams (mg)/day and will be increased weekly by 0.75 mg/day up to 3.0 mg/day. In the 48-week Flexible Titration and Maintenance Phase, the dose will be increased by 1.5 mg/day at intervals of at least 1 week up to a maximum of 15.0 mg/day. The dose will be maintained at a level without further symptomatic improvement is expected. The dosing regimen of L-dopa remain unchanged from 4 weeks prior to the start of the Screening Phase throughout the study.

Protocol document: