Clinical Evaluation of Ropinirole PR/XR Tablets in Monotherapy for Parkinson's Disease (PD)
Condition: Parkinson Disease
MeSH terms: Parkinson Disease
Intervention: Ropinirole prolonged release/extended release(PR/XR)
Intervention description: Subjects will take the investigational drug once daily at the same time each day, it is recommended that this is in the morning for optimal benefit. Investigational drug is taken for 52 weeks, starting on the next day of the Week 0 visit. One tablet of ropinirole PR/XR 2 mg tablets will be orally dosed as the initial dose. The dose will be titrated weekly by 2 mg/day, and increased to 8 mg/day in Week 4. From Week 5 up to 16, the dose will be increased at minimum intervals of one week between titration steps until sufficient efficacy is obtained, according to individual clinical response and tolerability (the dose may be titrated up to 16 mg/day). In Week 16 and further, treatment dose at Week 16 will be continuously administered up to Week 52. If insufficient efficacy is judged in a subject during treatment, or unable to maintain the dose due to adverse event, the treatment dose may be changed. The dose is down tapered according to the maintenance dose at Week 52 (or withdrawal).
Intervention MeSH terms: Ropinirole
Phase: Phase 2
Study type: Interventional
Primary purpose: Treatment
Intervention model: Single Group Assignment
Masking: None (Open Label)
Enrollment: 62.0
Sex: All
Minimum age: 20 Years
Healthy volunteers: No
Keywords: Parkinson's Disease; PD

Summary:

      This study was designed to evaluate the pharmacokinetic profile, safety and efficacy in
      Parkinson's Disease patients.
    

Eligibility criteria:

        Inclusion Criteria:

          -  Patients who are diagnosed with PD with severity of the Modified Hoehn & Yahr staging
             at Stage I to III.

          -  Age: 20 years or older (at the time of giving informed consent)

          -  Gender: male and female

          -  Both inpatient and outpatient status

          -  Informed consent: Patients who are able to give informed written consent in person
             (i.e. patients who are capable of giving informed written consent on one's own)

          -  Limited prior exposure to low or moderate doses of L-dopa (up to 3 months in total) or
             dopamine agonists (up to 6 months in total) provided treatment is discontinued for a
             minimum of 4 weeks prior to screening.

        Exclusion Criteria:

          -  Patients who present serious physical signs and symptoms other than those of the PD
             (e.g. cardiac/hepatic/renal disorder and haematopoietic disorder). The seriousness
             refers to Grade 3 according to "the Classification of the Severity of Adverse
             Experiences (Pharmaceutical affairs bureau/Safety division (PAB/SD) Notification No.
             80, dated 29 June 1992).

          -  Patients with symptomatic postural hypotension. (e.g. dizziness and syncope).

          -  Patients who have had serious psychiatric symptoms (e.g. confusion, hallucination,
             delusion, abnormal behaviour, alcohol or drug dependence) during the past six months
             (26 weeks) (including symptoms caused by anti-Parkinson drugs).

          -  Patients who have been treated with the following drugs at Week -4, and whose
             treatment regimen of the drug has been changed from Week -4 to Week 0.

               -  Anticholinergic agents: trihexyphenidyl hydrochloride (e.g. Artane®), piroheptine
                  hydrochloride (Trimol®), mazaticol hydrochloride (Pentona®), metixene
                  hydrochloride (Cholinfall®), biperiden hydrochloride (Akineton®), profenamine
                  (Parkin®)

               -  amantadine hydrochloride (e.g. Symmetrel®)

               -  droxidopa (Dops®)

               -  citicoline (e.g. Nicholin®)

               -  selegiline hydrochloride (FP®)

               -  zonisamide

               -  estrogen: estriol (e.g.Estriel®)

               -  CYP1A2 inhibitors: Ciprofloxacin HCl (e.g. Ciproxan®, enoxacin and fluvoxamine)

          -  Patients with severe dementia such as score 3 or 4 of the UPDRS Part I (Mentation,
             behaviour, and mood)

          -  Female patients who are pregnant or lactating, who may be pregnant, or who plan for
             pregnancy during the study or within 30 days after the last dose of the study drug.

          -  Patients with current history or complication of carcinoma or malignant tumour.

          -  Patients who have history of drug allergy to ropinirole hydrochloride (HCl).

          -  Patients who have received surgical treatment for PD in the past (e.g. pallidectomy,
             deep brain stimulation).

          -  Patients who have been treated with any other investigational drug within 12weeks
             prior to the treatment phase.

          -  Others whom the investigator (sub investigator) considers ineligible for the study.