Long-term Efficacy, Safety and Tolerability of Pramipexole in Patients With Idiopathic Moderate to Severe Restless Legs Syndrome (RLS)

NCT ID: NCT00472199

Last Updated: 2014-06-27

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

331 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-05-31

Brief Summary

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The primary objective of the current study will be the evaluation of long-term efficacy of a 26-weeks treatment with pramipexole in patients with idiopathic moderate to severe Restless Legs Syndrome (RLS) in comparison to placebo.

The key secondary objectives are to assess the effects on clinical global impressions - global improvement (CGI-I) (based on CGI-I responder rate) and on RLS (based on IRLS responder rate) for 26 weeks under pramipexole in comparison to placebo. Further secondary objectives are to investigate the incidence and severity of augmentation and rebound and to assess the effects on patient global impression (PGI) (based on PGI responder rate), on RLS symptoms (based on the RLS-6 scales), on associated mood disturbance (based on item 10 of the IRLS), on pain in limbs (based on a visual analogue scale (VAS)), on quality of life in RLS (based on Johns Hopkins RLS-QoL), on general quality of life Short Form 36 (SF-36) and on safety (based on adverse events (AE) profile) of pramipexole in comparison to placebo.

Detailed Description

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Conditions

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Restless Legs Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Pramipexole

4 weeks of flexible dose-titration (to optimise efficacy and tolerability), starting at 0.125 mg once daily with the potential to increase or decrease the dose in steps to 0.25 mg, 0.5 mg and 0.75 mg, with the final dose level subsequently fixed for 22 weeks.

Group Type EXPERIMENTAL

Pramipexole

Intervention Type DRUG

Placebo

4 weeks of flexible dose-titration as for the investigational product; with the dose subsequently fixed for 22 weeks.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Interventions

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Pramipexole

Intervention Type DRUG

Placebo

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Written informed consent consistent with International Conference on Harmonization - Good Clinical Practice (ICH-GCP) and local Institutional Review Board/Independent Ethics Committee (IRB/IEC) requirements obtained prior to any study procedures being performed and the ability and willingness to comply with study treatment regimen and to attend study assessments
2. Male or female out-patients aged 18-85 years
3. Diagnosis of idiopathic RLS according to the clinical RLS criteria of the International Restless Legs Syndrome Study Group (IRLSSG) \[P03-03355\]. All four criteria must be present to fulfil the diagnosis of RLS.
4. RLS symptoms present at least 2 to 3 days per week during the last 3 months prior to baseline (Visit 2)
5. IRLS total score \>15 at baseline (Visit 2)

Exclusion Criteria

1. Women of child-bearing potential (i.e. premenopausal women, or postmenopausal women less than 6 months after last menses) who do not use during the clinical trial an adequate method of contraception such as: double barrier protection (e.g. diaphragm or condom and spermicide), intrauterine device, hormonal therapy (oral, injectable, or subcutaneous), or partner's surgical sterilization
2. Any woman of child-bearing potential not having a negative pregnancy test at screening
3. Breastfeeding women
4. Patients with known hypersensitivity to pramipexole or any other component of the investigational product or placebo tablets
5. Diagnosis of augmentation under previous pharmacological RLS treatment
6. Concomitant or previous pharmacologic therapy as follows: Any intake of dopamine agonists within 14 days prior to baseline (Visit 2); Any intake of levodopa within 14 days prior to baseline (Visit 2); Unsuccessful prior treatment with non-ergot dopamine agonists (e.g. pramipexole, ropinirole);
Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Boehringer Ingelheim

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Boehringer Ingelheim

Role: STUDY_CHAIR

Boehringer Ingelheim

Locations

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248.629.4302 Boehringer Ingelheim Investigational Site

Innsbruck, , Austria

Site Status

248.629.4304 Boehringer Ingelheim Investigational Site

Linz, , Austria

Site Status

248.629.3201 Boehringer Ingelheim Investigational Site

Edegem, , Belgium

Site Status

248.629.35801 Boehringer Ingelheim Investigational Site

Espoo, , Finland

Site Status

248.629.35805 Boehringer Ingelheim Investigational Site

Helsinki, , Finland

Site Status

248.629.35804 Boehringer Ingelheim Investigational Site

Joensuu, , Finland

Site Status

248.629.35802 Boehringer Ingelheim Investigational Site

Oulu, , Finland

Site Status

248.629.35806 Boehringer Ingelheim Investigational Site

Tampere, , Finland

Site Status

248.629.4902 Boehringer Ingelheim Investigational Site

Berlin, , Germany

Site Status

248.629.4908 Boehringer Ingelheim Investigational Site

Bochum, , Germany

Site Status

248.629.4901 Boehringer Ingelheim Investigational Site

Ellwangen, , Germany

Site Status

248.629.4904 Boehringer Ingelheim Investigational Site

Hellersdorf, , Germany

Site Status

248.629.4906 Boehringer Ingelheim Investigational Site

Herborn, , Germany

Site Status

248.629.4905 Boehringer Ingelheim Investigational Site

Leipzig, , Germany

Site Status

248.629.4909 Boehringer Ingelheim Investigational Site

Schwerin, , Germany

Site Status

248.629.4903 Boehringer Ingelheim Investigational Site

Steglitz, , Germany

Site Status

248.629.4907 Boehringer Ingelheim Investigational Site

Würzburg, , Germany

Site Status

248.629.35301 Boehringer Ingelheim Investigational Site

Carrigtohill, , Ireland

Site Status

248.629.35302 Boehringer Ingelheim Investigational Site

Co. Kildare, , Ireland

Site Status

248.629.35303 Boehringer Ingelheim Investigational Site

Co. Tipperary, , Ireland

Site Status

248.629.31001 Boehringer Ingelheim Investigational Site

Bennebroek, , Netherlands

Site Status

248.629.31005 Boehringer Ingelheim Investigational Site

Hoogwoud, , Netherlands

Site Status

248.629.31006 Boehringer Ingelheim Investigational Site

Musselkanaal, , Netherlands

Site Status

248.629.31002 Boehringer Ingelheim Investigational Site

Oude Pekela, , Netherlands

Site Status

248.629.31003 Boehringer Ingelheim Investigational Site

Oude Pekela, , Netherlands

Site Status

248.629.31004 Boehringer Ingelheim Investigational Site

Rijswijk, , Netherlands

Site Status

248.629.4204 Boehringer Ingelheim Investigational Site

Bratislava, , Slovakia

Site Status

248.629.4205 Boehringer Ingelheim Investigational Site

Bratislava, , Slovakia

Site Status

248.629.4202 Boehringer Ingelheim Investigational Site

Brezno, , Slovakia

Site Status

248.629.4201 Boehringer Ingelheim Investigational Site

Košice, , Slovakia

Site Status

248.629.4203 Boehringer Ingelheim Investigational Site

Martin, , Slovakia

Site Status

248.629.3402 Boehringer Ingelheim Investigational Site

Barcelona, , Spain

Site Status

248.629.3405 Boehringer Ingelheim Investigational Site

Granada, , Spain

Site Status

248.629.3401 Boehringer Ingelheim Investigational Site

Madrid, , Spain

Site Status

248.629.3403 Boehringer Ingelheim Investigational Site

San Sebastián, , Spain

Site Status

248.629.3406 Hospital Arnau de Vilanova

Valencia, , Spain

Site Status

248.629.44003 Boehringer Ingelheim Investigational Site

Chorley, , United Kingdom

Site Status

248.629.44006 Boehringer Ingelheim Investigational Site

Edgbaston, Birmingham, , United Kingdom

Site Status

248.629.44004 Boehringer Ingelheim Investigational Site

Glasgow, , United Kingdom

Site Status

248.629.44001 Boehringer Ingelheim Investigational Site

Manchester, , United Kingdom

Site Status

248.629.44002 Boehringer Ingelheim Investigational Site

Reading, , United Kingdom

Site Status

248.629.44005 Boehringer Ingelheim Investigational Site

Waterloo, Liverpool, , United Kingdom

Site Status

Countries

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Austria Belgium Finland Germany Ireland Netherlands Slovakia Spain United Kingdom

Related Links

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Other Identifiers

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EUDRACT2006-006431-42

Identifier Type: -

Identifier Source: secondary_id

248.629

Identifier Type: -

Identifier Source: org_study_id

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