Skip to content

Survey on Long-Term Use of BI-Sifrol® Tablets in Patients With Restless Legs Syndrome

Survey on Long-Term Use of BI-Sifrol® Tablets in Patients With Restless Legs Syndrome

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01174459
Enrollment
571
Registered
2010-08-03
Start date
2010-08-31
Completion date
2013-08-31
Last updated
2014-08-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Restless Legs Syndrome

Brief summary

The survey is conducted to investigate the safety and efficacy of long-term use of BI-Sifrol Tablets in Restless Legs Syndrome (RLS) patients with or without renal dysfunction in routine medical practice.

Interventions

None listed

Sponsors

Boehringer Ingelheim
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
15 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Patient with Restless Legs Syndrome

Exclusion criteria

None

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Drug-related Adverse Events12 MonthsNumber of patients with drug-related adverse events

Secondary

MeasureTime frameDescription
Change From Baseline in Total Score of the International Restless Legs Syndrome Rating Scale (IRLS)after 12 months or at the end of observationInternational Restless Legs Syndrome rating scale (IRLS): The IRLS rating scale is a selfrating scale used to evaluate the severity of RLS and the patients are requested to answer 10 questions on a scale of 0 to 4. Respective scores (0-4 points) for the 10 questions were added up to calculate the total score on the IRLS. Therefore the total score is 0-40. The lower values represent a better outcome.

Countries

Japan

Participant flow

Participants by arm

ArmCount
Patient With Restless Legs Syndrome
Pramipexole immediate release tablets, oral administration, 0.125 mg/day to maximum 0.75 mg/day
510
Total510

Withdrawals & dropouts

PeriodReasonFG000
Overall Studycase report form (CRF) not collected5

Baseline characteristics

CharacteristicPatient With Restless Legs Syndrome
Age, Continuous61.4 years
STANDARD_DEVIATION 16.8
Sex: Female, Male
Female
298 Participants
Sex: Female, Male
Male
212 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
0 / 510
serious
Total, serious adverse events
10 / 510

Outcome results

Primary

Incidence of Drug-related Adverse Events

Number of patients with drug-related adverse events

Time frame: 12 Months

Population: Safety set: all patients who were documented to have taken at least one dose of pramipexole except for patients who had no observation documented after entry, made invalid registration or were not under the appropriate site contact.

ArmMeasureValue (NUMBER)
Patient With Restless Legs SyndromeIncidence of Drug-related Adverse Events76 participants
Secondary

Change From Baseline in Total Score of the International Restless Legs Syndrome Rating Scale (IRLS)

International Restless Legs Syndrome rating scale (IRLS): The IRLS rating scale is a selfrating scale used to evaluate the severity of RLS and the patients are requested to answer 10 questions on a scale of 0 to 4. Respective scores (0-4 points) for the 10 questions were added up to calculate the total score on the IRLS. Therefore the total score is 0-40. The lower values represent a better outcome.

Time frame: after 12 months or at the end of observation

Population: Efficacy set: The patient set included all patients in the safety set with approved indication RLS and had IRLS total score measurement at baseline and at least one post-baseline time point.

ArmMeasureValue (MEAN)Dispersion
Patient With Restless Legs SyndromeChange From Baseline in Total Score of the International Restless Legs Syndrome Rating Scale (IRLS)-13.42 Score on a scaleStandard Error 10.4

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026