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XP13512 (Gabapentin Enacarbil) Extension Study in Patients With Restless Legs Syndrome.

An Open-Label, 52-Week Extension Study Assessing XP13512 Safety and Efficacy in Patients With Restless Legs Syndrome.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00333359
Enrollment
581
Registered
2006-06-05
Start date
2006-06-30
Completion date
2008-12-31
Last updated
2013-07-22

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 primary objective of this trial is to assess the long-term safety and efficacy of XP13512 (Gabapentin Enacarbil) taken once daily for the treatment of patients suffering from Restless Legs Syndrome (RLS).

Detailed description

Study XP055 is a multicenter, open-label, 52-week extension study of XP13512 (Gabapentin Enacarbil \[GEn\]) given once daily to eligible subjects with Restless Legs Syndrome (RLS) who had previously completed 1 of the following studies and met eligibility criteria: XP052 (110963 \[NCT00298623\]), XP053 (111460 \[NCT00365352\]), XP081 (111462 \[NCT01332305\]), and XP083 (111463 \[NCT01332318\]).

Interventions

DRUGXP13512 (GEn)

1200 mg XP13512, orally, once daily for 52 weeks

Sponsors

XenoPort, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Patients who have successfully completed one of the following studies: XP052 (110963 \[NCT00298623\]), XP053 (111460 \[NCT00365352\]), XP081 (111462 \[NCT01332305\]), and XP083 (111463 \[NCT01332318\]).

Exclusion criteria

* Subjects who, in the opinion of the Investigator, would be non-compliant with the study visit schedule, procedures, or medication administration.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in the International Restless Legs Syndrome Rating Scale (IRLS) at Week 52 Using Observed Case (OC)Baseline and Week 52The IRLS rating scale is a measure of RLS disease severity. The score reflects participant-reported assessment of primary sensory and motor features and associated sleep problems in RLS. Also, items are included that assess the impact of symptoms on participants' mood, daily life, and activities. The total score on the IRLS ranges from 0 to 40, with higher values representing more severe RLS symptoms. Change from baseline was calculated as the Week 52 value minus the baseline value. Change scores with higher value represents greater improvement in RLS symptoms.
Number of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeeks 0, 1, 4, 12, 24, 36, and 52The CGI-I is a widely used tool designed to allow clinicians to rate the severity of illness and the change over time based on a seven-point rating scale, with a score of 1 being very much improved and a score of 7 being very much worse compared to the start of the study. Responders on the CGI-I are defined as those with a score of 1 or 2, corresponding to very much improved or improved, respectively.

Secondary

MeasureTime frameDescription
Number of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeeks 0, 1, 4, 12, 24, 36, and 52The Participant-rated CGI-I is a self-reported measure completed by the participant, who rates the change from the start of the study in the severity of their illness using a seven-point rating scale, with a score of 1 being very much improved and a score of 7 being very much worse. Responders on the Participant-rated CGI-I are defined as those with a score of 1 or 2, corresponding to very much improved and improved, respectively.
Number of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeeks 0, 1, and 52The Participant-rated CGI-I is a self-reported measure completed by the participant who rates the change from the start of the study in the severity of their illness using a seven-point rating scale, with a score of 1 being very much improved, 2 being much improved, 3 being minimally improved, 4 being no change, 5 being minimally worse, 6 being much worse, and 7 being very much worse compared to the start of the study.
Number of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC DataWeek 52In the 24-Hour RLS Record (diary), participants report the presence and severity of RLS symptoms (none, mild, moderate, or severe) for a 24-hour period, in 30-minute increments. The period was divided into 7 four-hour intervals (8 AM to 12PM, 12 to 4PM, 4 to 8PM, 6 to 10PM, 8 to 12 Midnight, Midnight to 4AM, 4 to 8AM).
Median Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Weeks 24 and 52The 24-Hour RLS Record is a diary in which participants report the presence and severity of RLS symptoms for a 24-hour period, in 30-min increments, beginning at 8AM on the day prior to the visit.
Change From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeeks 0, 1, 4, 12, 24, and 36The IRLS rating scale is a measure of RLS disease severity. The score reflects participant-reported assessment of primary sensory and motor features and associated sleep problems in RLS. Also, items are included that assess the impact of symptoms on participants' mood, daily life, and activities. The total score on the IRLS ranges from 0 to 40, with higher values representing more severe RLS symptoms. Change from baseline was calculated as the value at each visit minus the baseline value. Change scores with higher values represent greater improvement in RLS symptoms.
Mean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresBaseline and Weeks 24 and 52The WPAI:SHP estimates work productivity and social activities lost over the past week due to RLS symptoms. Each summary score is expressed as a percentage and ranges from 0 to 100, with higher scores indicating more work missed; a negative change from baseline indicates less work missed. Change = the observed value at the current visit minus the observed value at Week 0. Change is calculated only for participants who had a value at both the current visit and at Week 0.
Mean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedBaseline and Weeks 24 and 52The WPAI:SHP estimates work productivity and social activities lost over the past week due to RLS symptoms. Change is calculated as the observed value at Week 24/52 minus the observed value at baseline. Absenteeism is recorded as the number of hours missed from work. W, Week; hr, hour.
Mean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityBaseline and Weeks 24 and 52The WPAI:SHP estimates work productivity and social activities lost over the past week due to RLS symptoms. Change is calculated as the observed value at Week 52 minus the observed value at baseline. Productivity affected while working is estimated on a 0 (no effect) to 10 scale (completely preventing productivity).
Overall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Weeks 24 and 52The RLS QoL is an 18-item scale assessing the impact of RLS on daily life, emotional well-being, social and work life. Responses range from 1 (not at all/never) to 5 (a lot/all of the time). Ten items contribute to a single summary score, the Overall Life Impact, which is standardized to range from 0-100, with lower scores representing better QoL.
Number of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeeks 0, 1, and 52The CGI-I is a widely used tool designed to allow clinicians to rate the severity of illness and the change over time based on a seven-point rating scale, with a score of 1 being very much improved, 2 being much improved, 3 being minimally improved, 4 being no change, 5 being minimally worse, 6 being much worse, and 7 being very much worse compared to the start of the study.

Participant flow

Recruitment details

Participants completing one of four parent studies (110963 \[NCT00298623\], 111460 \[NCT00365352\], 111462 \[NCT01332305\], and 111463 \[NCT01332318\]) were eligible to enroll in Study 111490 (NCT00333359) if eligibility criteria were met.

Participants by arm

ArmCount
Naïve; 1200 mg GEn
Naïve participants received placebo (therefore naïve to gabapentin enacarbil \[GEn\]) in a parent study, followed by GEn 1200 mg once a day (with the flexibility to go up to 1800 mg or down to 600 mg based on tolerability and efficacy) in this study.
197
Non-naïve; 1200 mg GEn
Non-naïve participants received GEn in a parent study, followed by GEn 1200 mg once a day (with the flexibility to go up to 1800 mg or down to 600 mg based on tolerability and efficacy) in this study.
376
Total573

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event2935
Overall StudyLost to Follow-up1525
Overall StudyPhysician Decision22
Overall StudyProtocol Non-compliance28
Overall StudyTermination or Withdrawal by Sponsor11
Overall StudyTreatment Failure38
Overall StudyWithdrawal by Subject1937
Overall StudyWithdrew before Receiving One Dose26

Baseline characteristics

CharacteristicNaïve; 1200 mg GEnNon-naïve; 1200 mg GEnTotal
Age Continuous49.5 Years
STANDARD_DEVIATION 12.03
50.6 Years
STANDARD_DEVIATION 11.82
50.2 Years
STANDARD_DEVIATION 11.89
Race/Ethnicity, Customized
American Indian or Alaskan Native
1 participants5 participants6 participants
Race/Ethnicity, Customized
Asian
1 participants3 participants4 participants
Race/Ethnicity, Customized
Black or African American
2 participants5 participants7 participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
1 participants0 participants1 participants
Race/Ethnicity, Customized
Unknown
0 participants3 participants3 participants
Race/Ethnicity, Customized
White or Caucasian
192 participants360 participants552 participants
Sex: Female, Male
Female
119 Participants217 Participants336 Participants
Sex: Female, Male
Male
78 Participants159 Participants237 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
114 / 197144 / 376258 / 573
serious
Total, serious adverse events
7 / 19714 / 37621 / 573

Outcome results

Primary

Change From Baseline in the International Restless Legs Syndrome Rating Scale (IRLS) at Week 52 Using Observed Case (OC)

The IRLS rating scale is a measure of RLS disease severity. The score reflects participant-reported assessment of primary sensory and motor features and associated sleep problems in RLS. Also, items are included that assess the impact of symptoms on participants' mood, daily life, and activities. The total score on the IRLS ranges from 0 to 40, with higher values representing more severe RLS symptoms. Change from baseline was calculated as the Week 52 value minus the baseline value. Change scores with higher value represents greater improvement in RLS symptoms.

Time frame: Baseline and Week 52

Population: Safety Population: all participants who received one dose or any part of one dose of GEn. Week 52 (end of treatment) results included only Week 52 observed cases and do not include early termination values; as such, the number of participants analyzed differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureValue (MEAN)Dispersion
Naïve; 1200 mg GEnChange From Baseline in the International Restless Legs Syndrome Rating Scale (IRLS) at Week 52 Using Observed Case (OC)-16.3 points on a scaleStandard Deviation 8.23
Non-naïve; 1200 mg GEnChange From Baseline in the International Restless Legs Syndrome Rating Scale (IRLS) at Week 52 Using Observed Case (OC)-17.0 points on a scaleStandard Deviation 8.2
All Participants; 1200 mg GEnChange From Baseline in the International Restless Legs Syndrome Rating Scale (IRLS) at Week 52 Using Observed Case (OC)-16.8 points on a scaleStandard Deviation 8.21
Primary

Number of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OC

The CGI-I is a widely used tool designed to allow clinicians to rate the severity of illness and the change over time based on a seven-point rating scale, with a score of 1 being very much improved and a score of 7 being very much worse compared to the start of the study. Responders on the CGI-I are defined as those with a score of 1 or 2, corresponding to very much improved or improved, respectively.

Time frame: Weeks 0, 1, 4, 12, 24, 36, and 52

Population: Safety Population. Results at each week include only observed cases and do not include early termination values; as such, the number of participants analyzed differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (NUMBER)
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 1, n=185, 363, 548152 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 24, n=138, 305, 443126 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 12, n=150, 324, 474133 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 0, n=197, 376, 57384 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 52, n=126, 262, 388115 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 36, n=132, 281, 413120 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 4, n=171, 354, 525143 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 12, n=150, 324, 474297 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 0, n=197, 376, 573300 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 1, n=185, 363, 548294 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 4, n=171, 354, 525308 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 24, n=138, 305, 443275 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 36, n=132, 281, 413260 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 52, n=126, 262, 388247 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 24, n=138, 305, 443401 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 1, n=185, 363, 548446 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 52, n=126, 262, 388362 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 36, n=132, 281, 413380 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 12, n=150, 324, 474430 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 4, n=171, 354, 525451 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Investigator-rated Clinical Global Impressions of Improvement (CGI-I) at Each Visit Using OCWeek 0, n=197, 376, 573384 participants
Secondary

Change From Baseline in the IRLS Rating Scale Score at Each Visit Using OC

The IRLS rating scale is a measure of RLS disease severity. The score reflects participant-reported assessment of primary sensory and motor features and associated sleep problems in RLS. Also, items are included that assess the impact of symptoms on participants' mood, daily life, and activities. The total score on the IRLS ranges from 0 to 40, with higher values representing more severe RLS symptoms. Change from baseline was calculated as the value at each visit minus the baseline value. Change scores with higher values represent greater improvement in RLS symptoms.

Time frame: Weeks 0, 1, 4, 12, 24, and 36

Population: Safety Population. Results at each week include only observed cases and do not include early termination values; as such, the number of participants analyzed differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (MEAN)Dispersion
Naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 0, n=197, 376, 573-9.4 points on a scaleStandard Deviation 8.08
Naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 1, n=186, 360, 546-15.6 points on a scaleStandard Deviation 7.44
Naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 4, n=174, 352, 526-15.6 points on a scaleStandard Deviation 7.72
Naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 12, n=150, 322, 472-15.8 points on a scaleStandard Deviation 8.76
Naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 24, n=139, 305, 444-16.2 points on a scaleStandard Deviation 7.53
Naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 36, n=130, 281, 411-16.8 points on a scaleStandard Deviation 7.79
Non-naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 36, n=130, 281, 411-16.6 points on a scaleStandard Deviation 8.23
Non-naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 0, n=197, 376, 573-14.6 points on a scaleStandard Deviation 8.4
Non-naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 12, n=150, 322, 472-16.3 points on a scaleStandard Deviation 7.84
Non-naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 24, n=139, 305, 444-16.5 points on a scaleStandard Deviation 7.8
Non-naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 1, n=186, 360, 546-13.5 points on a scaleStandard Deviation 8.47
Non-naïve; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 4, n=174, 352, 526-15.8 points on a scaleStandard Deviation 7.8
All Participants; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 1, n=186, 360, 546-14.2 points on a scaleStandard Deviation 8.19
All Participants; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 4, n=174, 352, 526-15.7 points on a scaleStandard Deviation 7.77
All Participants; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 36, n=130, 281, 411-16.7 points on a scaleStandard Deviation 8.09
All Participants; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 12, n=150, 322, 472-16.1 points on a scaleStandard Deviation 8.14
All Participants; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 0, n=197, 376, 573-12.8 points on a scaleStandard Deviation 8.64
All Participants; 1200 mg GEnChange From Baseline in the IRLS Rating Scale Score at Each Visit Using OCWeek 24, n=139, 305, 444-16.4 points on a scaleStandard Deviation 7.71
Secondary

Mean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually Worked

The WPAI:SHP estimates work productivity and social activities lost over the past week due to RLS symptoms. Change is calculated as the observed value at Week 24/52 minus the observed value at baseline. Absenteeism is recorded as the number of hours missed from work. W, Week; hr, hour.

Time frame: Baseline and Weeks 24 and 52

Population: Safety Population. Results include only observed cases and do not include early termination values; as such, the number of participants analyzed at each week differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (MEAN)Dispersion
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW24, hr missed due to RLS, n=108, 199, 307-0.1 hoursStandard Deviation 1.08
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW24, hr missed for other reason, n=108, 199, 307-1.8 hoursStandard Deviation 8.94
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedHW24, hr actually worked, n=108, 199, 3070.8 hoursStandard Deviation 18.09
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr missed due to RLS, n=82, 175, 2570.1 hoursStandard Deviation 2.39
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr missed other reason, n=82, 175, 2570.5 hoursStandard Deviation 10.78
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr actually worked, n=82, 175, 2570.0 hoursStandard Deviation 19.79
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr actually worked, n=82, 175, 2572.2 hoursStandard Deviation 17.98
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW24, hr missed due to RLS, n=108, 199, 307-0.1 hoursStandard Deviation 3.3
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr missed due to RLS, n=82, 175, 2570.2 hoursStandard Deviation 4.1
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr missed other reason, n=82, 175, 257-1.8 hoursStandard Deviation 11.58
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW24, hr missed for other reason, n=108, 199, 307-0.2 hoursStandard Deviation 12.56
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedHW24, hr actually worked, n=108, 199, 3072.5 hoursStandard Deviation 17.6
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW24, hr missed for other reason, n=108, 199, 307-0.8 hoursStandard Deviation 11.43
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedHW24, hr actually worked, n=108, 199, 3071.9 hoursStandard Deviation 17.76
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr actually worked, n=82, 175, 2571.5 hoursStandard Deviation 18.56
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr missed due to RLS, n=82, 175, 2570.2 hoursStandard Deviation 3.64
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW24, hr missed due to RLS, n=108, 199, 307-0.1 hoursStandard Deviation 2.73
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Items: Hours of Work Missed Due to RLS, Hours of Work Missed Due to Other Reason, and Hours Actually WorkedW52, hr missed other reason, n=82, 175, 257-1.0 hoursStandard Deviation 11.36
Secondary

Mean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary Scores

The WPAI:SHP estimates work productivity and social activities lost over the past week due to RLS symptoms. Each summary score is expressed as a percentage and ranges from 0 to 100, with higher scores indicating more work missed; a negative change from baseline indicates less work missed. Change = the observed value at the current visit minus the observed value at Week 0. Change is calculated only for participants who had a value at both the current visit and at Week 0.

Time frame: Baseline and Weeks 24 and 52

Population: Safety Population. Results include only observed cases and do not include early termination values; as such, the number of participants analyzed at each week differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (MEAN)Dispersion
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Work Time Missed, n=108, 199, 307-0.2 percent changeStandard Deviation 5.24
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Work Time Missed, n=82, 175, 257-0.2 percent changeStandard Deviation 7.16
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Daily Activity Impairment, n=117,261,378-11.5 percent changeStandard Deviation 20.31
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Overall Work Impairment, n=78, 170, 248-8.9 percent changeStandard Deviation 19.25
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Impairment While Working, n=101, 185, 286-7.6 percent changeStandard Deviation 19.5
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Overall Work Impairment, n=101, 185, 286-7.6 percent changeStandard Deviation 20.39
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Impairment While Working n=78, 170, 248-8.7 percent changeStandard Deviation 18.26
Naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Daily Activity Impairment, n=158,309,467-10.3 percent changeStandard Deviation 20.11
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Overall Work Impairment, n=101, 185, 286-2.2 percent changeStandard Deviation 11.8
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Impairment While Working, n=101, 185, 286-2.3 percent changeStandard Deviation 10.8
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Work Time Missed, n=82, 175, 2571.0 percent changeStandard Deviation 9.86
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Impairment While Working n=78, 170, 248-0.9 percent changeStandard Deviation 5.61
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Work Time Missed, n=108, 199, 3070.1 percent changeStandard Deviation 4.88
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Overall Work Impairment, n=78, 170, 248-0.8 percent changeStandard Deviation 17.03
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Daily Activity Impairment, n=117,261,378-3.9 percent changeStandard Deviation 19.62
Non-naïve; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Daily Activity Impairment, n=158,309,467-4.3 percent changeStandard Deviation 18.02
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Daily Activity Impairment, n=117,261,378-6.3 percent changeStandard Deviation 20.11
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Overall Work Impairment, n=78, 170, 248-3.3 percent changeStandard Deviation 18.12
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Work Time Missed, n=108, 199, 3070.0 percent changeStandard Deviation 5
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Impairment While Working, n=101, 185, 286-4.2 percent changeStandard Deviation 14.67
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Overall Work Impairment, n=101, 185, 286-4.1 percent changeStandard Deviation 15.57
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 24, Daily Activity Impairment, n=158,309,467-6.3 percent changeStandard Deviation 18.95
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Impairment While Working n=78, 170, 248-3.3 percent changeStandard Deviation 16.85
All Participants; 1200 mg GEnMean Change From Baseline at Week 24 and Week 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Summary ScoresWeek 52, Work Time Missed, n=82, 175, 2570.6 percent changeStandard Deviation 9.09
Secondary

Mean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected Productivity

The WPAI:SHP estimates work productivity and social activities lost over the past week due to RLS symptoms. Change is calculated as the observed value at Week 52 minus the observed value at baseline. Productivity affected while working is estimated on a 0 (no effect) to 10 scale (completely preventing productivity).

Time frame: Baseline and Weeks 24 and 52

Population: Safety Population: all participants who received one dose or any part of one dose of GEn. Results include only observed cases and do not include early termination values; as such the number of participants analyzed at each week differs from the number of participants in the Baseline characteristics summary.

ArmMeasureGroupValue (MEAN)Dispersion
Naïve; 1200 mg GEnMean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityWeek 24, n=101, 185, 286-0.8 points on a scaleStandard Deviation 1.95
Naïve; 1200 mg GEnMean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityWeek 52, n=78, 170, 248-0.9 points on a scaleStandard Deviation 1.83
Non-naïve; 1200 mg GEnMean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityWeek 24, n=101, 185, 286-0.2 points on a scaleStandard Deviation 1.08
Non-naïve; 1200 mg GEnMean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityWeek 52, n=78, 170, 248-0.1 points on a scaleStandard Deviation 1.56
All Participants; 1200 mg GEnMean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityWeek 24, n=101, 185, 286-0.4 points on a scaleStandard Deviation 1.47
All Participants; 1200 mg GEnMean Change From Baseline at Weeks 24 and 52 in Work Productivity and Activity Impairment Questionnaire (WPAI:SHP) Individual Item: RLS Affected ProductivityWeek 52, n=78, 170, 248-0.3 points on a scaleStandard Deviation 1.68
Secondary

Median Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52

The 24-Hour RLS Record is a diary in which participants report the presence and severity of RLS symptoms for a 24-hour period, in 30-min increments, beginning at 8AM on the day prior to the visit.

Time frame: Weeks 24 and 52

Population: Safety Population. Results include only observed cases and do not include early termination values; as such, the number of participants analyzed at each week differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (MEDIAN)
Naïve; 1200 mg GEnMedian Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Week 24, n=127, 285, 41215.5 hours
Naïve; 1200 mg GEnMedian Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Week 52, n=123, 241, 364NA hours
Non-naïve; 1200 mg GEnMedian Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Week 24, n=127, 285, 41220 hours
Non-naïve; 1200 mg GEnMedian Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Week 52, n=123, 241, 364NA hours
All Participants; 1200 mg GEnMedian Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Week 24, n=127, 285, 41218 hours
All Participants; 1200 mg GEnMedian Time to Onset of the First RLS Symptom Using the RLS Symptom Record at Weeks 24 and 52Week 52, n=123, 241, 364NA hours
Secondary

Number of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OC

The Participant-rated CGI-I is a self-reported measure completed by the participant, who rates the change from the start of the study in the severity of their illness using a seven-point rating scale, with a score of 1 being very much improved and a score of 7 being very much worse. Responders on the Participant-rated CGI-I are defined as those with a score of 1 or 2, corresponding to very much improved and improved, respectively.

Time frame: Weeks 0, 1, 4, 12, 24, 36, and 52

Population: Safety Population. Results at each week include only observed cases and do not include early termination values; as such, the number of participants analyzed at each week differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (NUMBER)
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 0, n=197, 376, 57386 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 36, n=129, 276, 405115 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 4, n=171, 348, 519143 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 52, n=122, 247, 369107 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 1, n=182, 351, 533145 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 24, n=133, 300, 433117 participants
Naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 12, n=148, 318, 466131 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 4, n=171, 348, 519299 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 12, n=148, 318, 466283 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 24, n=133, 300, 433275 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 36, n=129, 276, 405252 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 52, n=122, 247, 369227 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 0, n=197, 376, 573304 participants
Non-naïve; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 1, n=182, 351, 533261 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 24, n=133, 300, 433392 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 1, n=182, 351, 533406 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 0, n=197, 376, 573390 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 12, n=148, 318, 466414 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 36, n=129, 276, 405367 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 4, n=171, 348, 519442 participants
All Participants; 1200 mg GEnNumber of Participants Classified as Responders to Treatment on the Participant-rated CGI-I at Each Visit Using OCWeek 52, n=122, 247, 369334 participants
Secondary

Number of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OC

The CGI-I is a widely used tool designed to allow clinicians to rate the severity of illness and the change over time based on a seven-point rating scale, with a score of 1 being very much improved, 2 being much improved, 3 being minimally improved, 4 being no change, 5 being minimally worse, 6 being much worse, and 7 being very much worse compared to the start of the study.

Time frame: Weeks 0, 1, and 52

Population: Safety Population. Results at each week include only observed cases and do not include early termination values; as such, the number of participants analyzed differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (NUMBER)
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Very much worse, n=185, 363, 5480 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Very much improved, n=185, 363, 54882 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Very much worse, n=126, 262, 3880 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, No change, n=126, 262, 3884 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Much improved, n=185, 363, 54870 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Minimally worse, n=126, 262, 3880 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Much worse, n=185, 363, 5481 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Minimally improved, n=185, 363, 54828 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, No change, n=197, 376, 57355 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Minimally worse, n=185, 363, 5480 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, No change, n=185, 363, 5484 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Much improved, n=197, 376, 57346 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Minimally improved, n=126, 262, 3887 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Minimally worse, n=197, 376, 5739 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Very much improved, n=197, 376, 57338 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Much improved, n=126, 262, 38843 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Much worse, n=197, 376, 5732 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Much worse, n=126, 262, 3880 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Very much improved, n=126, 262, 38872 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Very much worse, n=197, 376, 5730 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Minimally improved, n=197, 376, 57347 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Much worse, n=185, 363, 5481 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Very much improved, n=197, 376, 573192 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Much improved, n=197, 376, 573108 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Minimally improved, n=197, 376, 57337 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, No change, n=197, 376, 57336 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Minimally worse, n=197, 376, 5730 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Much worse, n=197, 376, 5732 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Very much worse, n=197, 376, 5731 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Very much improved, n=185, 363, 548155 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Much improved, n=185, 363, 548139 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Minimally improved, n=185, 363, 54840 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, No change, n=185, 363, 54825 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Minimally worse, n=185, 363, 5483 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Very much worse, n=185, 363, 5480 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Very much improved, n=126, 262, 388187 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Much improved, n=126, 262, 38860 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Minimally improved, n=126, 262, 3889 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, No change, n=126, 262, 3884 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Minimally worse, n=126, 262, 3880 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Much worse, n=126, 262, 3881 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Very much worse, n=126, 262, 3881 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Very much worse, n=185, 363, 5480 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Much worse, n=197, 376, 5734 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Minimally worse, n=126, 262, 3880 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Very much improved, n=126, 262, 388259 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Minimally worse, n=197, 376, 5739 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Much improved, n=197, 376, 573154 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Much improved, n=126, 262, 388103 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, No change, n=197, 376, 57391 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Very much worse, n=126, 262, 3881 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Minimally improved, n=126, 262, 38816 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, Much worse, n=126, 262, 3881 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 52, No change, n=126, 262, 3888 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, No change, n=185, 363, 54829 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Minimally improved, n=185, 363, 54868 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Minimally improved, n=197, 376, 57384 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Minimally worse, n=185, 363, 5483 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Much improved, n=185, 363, 548209 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Very much improved, n=185, 363, 548237 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 1, Much worse, n=185, 363, 5482 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Very much worse, n=197, 376, 5731 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Investigator-rated CGI-I by Visit Using OCWeek 0, Very much improved, n=197, 376, 573230 participants
Secondary

Number of Participants in Each Category of the Participant-rated CGI-I by Visit Using OC

The Participant-rated CGI-I is a self-reported measure completed by the participant who rates the change from the start of the study in the severity of their illness using a seven-point rating scale, with a score of 1 being very much improved, 2 being much improved, 3 being minimally improved, 4 being no change, 5 being minimally worse, 6 being much worse, and 7 being very much worse compared to the start of the study.

Time frame: Weeks 0, 1, and 52

Population: Safety Population. Results at each week include only observed cases and do not include early termination values; as such, the number of participants analyzed differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (NUMBER)
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Very much improved, n=182, 351, 53391 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Very much improved, n=197, 376, 57339 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Very much improved, n=122, 247, 36980 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Much improved, n=182, 351, 53354 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, No change, n=197, 376, 57350 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Very much worse, n=182, 351, 5331 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Minimally improved, n=182, 351, 53329 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Very much worse, n=122, 247, 3691 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Much worse, n=182, 351, 5332 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, No change, n=182, 351, 5334 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Minimally worse, n=122, 247, 3690 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Minimally worse, n=182, 351, 5331 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Minimally worse, n=197, 376, 5738 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Much worse, n=122, 247, 3690 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, No change, n=122, 247, 3693 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Much worse, n=197, 376, 5735 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Minimally improved, =197, 376, 57347 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Minimally improved, n=122, 247, 36911 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Very much worse, n=197, 376, 5731 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Much improved, n=197, 376, 57347 participants
Naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Much improved, n=122, 247, 36927 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Minimally worse, n=122, 247, 3690 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Very much improved, n=197, 376, 573194 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Much improved, n=197, 376, 573110 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Minimally improved, =197, 376, 57335 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, No change, n=197, 376, 57329 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Minimally worse, n=197, 376, 5736 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Much worse, n=197, 376, 5731 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Very much worse, n=197, 376, 5731 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Very much improved, n=182, 351, 533171 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Much improved, n=182, 351, 53390 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Minimally improved, n=182, 351, 53348 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, No change, n=182, 351, 53328 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Minimally worse, n=182, 351, 5336 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Much worse, n=182, 351, 5337 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Very much worse, n=182, 351, 5331 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Very much improved, n=122, 247, 369177 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Much improved, n=122, 247, 36950 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Minimally improved, n=122, 247, 36913 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, No change, n=122, 247, 3695 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Much worse, n=122, 247, 3691 participants
Non-naïve; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Very much worse, n=122, 247, 3691 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Very much improved, n=182, 351, 533262 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Much improved, n=197, 376, 573157 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Very much improved, n=122, 247, 369257 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Very much worse, n=197, 376, 5732 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Very much worse, n=122, 247, 3692 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Much improved, n=122, 247, 36977 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Much worse, n=197, 376, 5736 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Much worse, n=122, 247, 3691 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Minimally improved, n=122, 247, 36924 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Minimally worse, n=197, 376, 57314 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Very much improved, n=197, 376, 573233 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, No change, n=122, 247, 3698 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, No change, n=182, 351, 53332 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, No change, n=197, 376, 57379 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Minimally worse, n=182, 351, 5337 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Minimally improved, n=182, 351, 53377 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 0, Minimally improved, =197, 376, 57382 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Much worse, n=182, 351, 5339 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Much improved, n=182, 351, 533144 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 52, Minimally worse, n=122, 247, 3690 participants
All Participants; 1200 mg GEnNumber of Participants in Each Category of the Participant-rated CGI-I by Visit Using OCWeek 1, Very much worse, n=182, 351, 5332 participants
Secondary

Number of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data

In the 24-Hour RLS Record (diary), participants report the presence and severity of RLS symptoms (none, mild, moderate, or severe) for a 24-hour period, in 30-minute increments. The period was divided into 7 four-hour intervals (8 AM to 12PM, 12 to 4PM, 4 to 8PM, 6 to 10PM, 8 to 12 Midnight, Midnight to 4AM, 4 to 8AM).

Time frame: Week 52

Population: Safety Population. Results at Week 52 include only Week 52 observed cases and do not include early termination values; as such, the number of participants with data at each time point differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (NUMBER)
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data12 PM to 4 PM, n=122, 240, 362106 participants
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data8 PM to 12 AM, n=122, 241, 36375 participants
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data6 PM to 10 PM, n=122, 241, 36380 participants
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data8 AM to 12 PM, n=123, 241, 364106 participants
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data4 AM to 8 AM, n=123, 241, 364104 participants
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data12 AM to 4 AM, n=123, 241, 36498 participants
Naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data4 PM to 8 PM, n=122, 240, 36288 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data6 PM to 10 PM, n=122, 241, 363175 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data8 AM to 12 PM, n=123, 241, 364224 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data12 PM to 4 PM, n=122, 240, 362216 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data4 PM to 8 PM, n=122, 240, 362184 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data8 PM to 12 AM, n=122, 241, 363162 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data12 AM to 4 AM, n=123, 241, 364195 participants
Non-naïve; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data4 AM to 8 AM, n=123, 241, 364214 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data8 PM to 12 AM, n=122, 241, 363237 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data12 PM to 4 PM, n=122, 240, 362322 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data4 AM to 8 AM, n=123, 241, 364318 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data12 AM to 4 AM, n=123, 241, 364293 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data6 PM to 10 PM, n=122, 241, 363255 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data4 PM to 8 PM, n=122, 240, 362272 participants
All Participants; 1200 mg GEnNumber of Participants With no Reported RLS Symptoms During Each of the 4-hour Periods From the 24-hour RLS Record at Week 52 Using OC Data8 AM to 12 PM, n=123, 241, 364330 participants
Secondary

Overall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52

The RLS QoL is an 18-item scale assessing the impact of RLS on daily life, emotional well-being, social and work life. Responses range from 1 (not at all/never) to 5 (a lot/all of the time). Ten items contribute to a single summary score, the Overall Life Impact, which is standardized to range from 0-100, with lower scores representing better QoL.

Time frame: Weeks 24 and 52

Population: Safety Population. Results include only observed cases and do not include early termination values; as such, the number of participants analyzed at each week differs from the number of participants in the Baseline Characteristics summary.

ArmMeasureGroupValue (MEAN)Dispersion
Naïve; 1200 mg GEnOverall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Week 24, n=164, 328, 49289.8 points on a scaleStandard Deviation 12.27
Naïve; 1200 mg GEnOverall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Week 52, n=121, 264, 38592.0 points on a scaleStandard Deviation 9.77
Non-naïve; 1200 mg GEnOverall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Week 24, n=164, 328, 49291.1 points on a scaleStandard Deviation 12.04
Non-naïve; 1200 mg GEnOverall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Week 52, n=121, 264, 38592.0 points on a scaleStandard Deviation 11.66
All Participants; 1200 mg GEnOverall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Week 24, n=164, 328, 49290.7 points on a scaleStandard Deviation 12.12
All Participants; 1200 mg GEnOverall Quality of Life (QoL) Impact Score of the RLS Quality of Life Questionnaire at Weeks 24 and 52Week 52, n=121, 264, 38592.0 points on a scaleStandard Deviation 11.09

Source: ClinicalTrials.gov · Data processed: Mar 30, 2026