A study to test the effectiveness of varying doses of ropinirole PR while taking L-dopa in patients with late stage Parkinson's disease.

• Conditions: Advanced Parkinson's disease.; MedDRA version: 14.1Level: PTClassification code 10061536Term: Parkinson's diseaseSystem Organ Class: 10029205 - Nervous system disorders; Therapeutic area: Diseases [C] - Nervous System Diseases [C10]

• Registration Number: EUCTR2011-002828-41-EE
• Lead Sponsor: GlaxoSmithKline Research & Development Limited

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2013-02-08
• Last Update Posted: 10 July 2015

Recruitment & Eligibility

• Status: ot Recruiting
• Sex: All
• Target Recruitment: 406

Inclusion Criteria

Subjects eligible for enrolment in the study must meet all of the following criteria:

1. Diagnosis of idiopathic Parkinson’s disease (according to modified Hoehn & Yahr criteria Stages II-IV) and demonstrating lack of control with L-dopa therapy (e.g. end of dose akinesia, simple on/off fluctuations).
2. Subjects receiving a stable dose of L-dopa for at least 4 weeks prior to screening.
3. A minimum of 3 hours awake off-time” for each diary day recorded during the baseline period.
4. Men or non-pregnant/non-breast-feeding women of at least 30 years of age at screening. Women of child-bearing potential must be practicing a clinically accepted method of contraception during the study and for at least one month prior to randomization and one month following completion of the study. Acceptable contraceptive methods include abstinence, oral contraception, injectable progestogen, implants of levonorgestrel, estrogenic vaginal ring, percutaneous contraceptive patches, surgical sterilisation, male partner sterilization, intrauterine device [IUD], or double barrier method: condom or occlusive cap (diaphragm or cervical/vault caps) plus spermicidal agent (foam/gel/film/cream/suppository.
5. Provide written informed consent for this study.
6. Be willing and able to comply with study procedures, including diary card completion and follow-up clinic visits.

Specific information regarding warnings, precautions, contraindications, adverse events, and other pertinent information on the GSK investigational product or other study treatment that may impact subject eligibility is provided in the Investigator Brochure and product label.

Deviations from inclusion criteria are not allowed because they can potentially jeopardize the scientific integrity of the study, regulatory acceptability or subject safety. Therefore, adherence to the criteria as specified in the protocol is essential.

French subjects: In France, a subject will be eligible for inclusion in this study only if either affiliated to or a beneficiary of a social security category.
Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 151
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range 255

Exclusion Criteria

Subjects meeting any of the following criteria must not be enrolled in the study:

1. Late stage advanced subjects demonstrating incapacitating peak dose or diphasic dyskinesia on their stable dose of L-dopa
2. Consumption of any dopamine agonist, including ropinirole, within four weeks of randomization in the study.
3. Subjects with severe, clinically significant condition(s) other than Parkinson’s disease which, in the opinion of the investigator, would render the subject unsuitable for the study (e.g., psychiatric, haematological, renal, hepatic, endocrinology, neurological [other than Parkinson’s disease], cardiovascular, or active malignancy [other than basal cell carcinoma]).
4. Subjects with crippling degenerative arthritis or other physical or mental conditions which would preclude accurate assessment of efficacy or safety.
5. Subjects with prior or current major psychosis (e.g., schizophrenia or psychotic depression) e.g. scoring 3 or 4 on UPDRS item 2 [thought disorder] or item 3 [depression].
6. Subjects with severe clinical dementia e.g. scoring 3 or 4 on UPDRS item 1 [mentation].
7. Subjects with severe dizziness or fainting due to postural hypotension on standing.
8. Subjects with a personal history of melanoma.
9. Subjects with clinically significant abnormalities in laboratory or ECG tests at Screening. If findings are outside the normal range and the subject is included, it must be documented by the investigator that the findings are not of clinical significance.
10. Subjects who are diagnosed with an impulse control disorder. The modified MIDI will be conducted at screening. Subjects who score positive for this screen must be referred to a specialist for diagnostic evaluation.
11. Subjects who have an active suicidal plan/intent or have had active suicidal thoughts in the past 6 months. Subjects who have a history of suicide attempt in the last 2 years or more than 1 lifetime suicide attempt.
12. Current alcohol or drug dependence.
13. Definite or suspected personal or family history of clinically significant adverse reactions or hypersensitivity to ropinirole (or to drugs with a similar chemical structure) that would preclude long-term dosing with ropinirole.
14. Withdrawal, introduction, or change in dose of hormone replacement therapy and/or any drug known to substantially inhibit CYP1A2 (e.g. ciprofloxacine, fluvoxamine, cimetidine, ethinyloestradiol) or induce CYP1A2 (e.g. tobacco, omeprazole) within 7 days prior to enrolment (randomization). Subjects already on chronic therapy with any of these agents may be enrolled but doses must have remained stable from 7 days prior to enrolment (randomization) through the end of the treatment period.
15. Women who are pregnant or breast-feeding.
16. Use of an investigational drug from 30 days or 5 half-lives (whichever is longer) prior to enrolment (randomization) through to the end of the treatment period.

Deviations from exclusion criteria are not allowed because they can potentially jeopardize the scientific integrity of the study, regulatory acceptability or subject safety. Therefore, adherence to the criteria as specified in the protocol is essential.

Study & Design

• Study Type: Interventional clinical trial of medicinal product
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Main Objective: To characterise the dose response for ropinirole PR as adjunctive treatment to L-dopa in patients with advanced Parkinson's disease.;Secondary Objective: To investigate the tolerability of fixed doses of ropinirole PR as adjunctive treatment to L-dopa in patients with advanced Parkinson's disease.;Primary end point(s): The primary endpoint for the adjunctive study will be:<br><br>Change from baseline in total awake time spent off” at Week 4 of the Maintenance Period<br><br>The general definition of off-time” includes a lack of mobility (bradykinesia) with or without additional features such as tremor or rigidity.;Timepoint(s) of evaluation of this end point: Week 4 of the Maintenance Period.