Post-marketing Study of Gabapentin Enacarbil to Evaluate the Effect in Restless Leg Syndrome (RLS) Patients With Moderate Renal Impairment
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To evaluate the safety, efficacy and pharmacokinetics of gabapentin enacarbil in moderate to severe primary RLS patients with moderate renal impairment and to confirm dosage and administration in such population.
Condition or disease
Restless Legs Syndrome (RLS)
Drug: Gabapentin enacarbil
This study is a multicenter, non-blinded, non-comparative study. Patients who meet the eligible criteria will undergo one week observation period followed by four week treatment period. In treatment period, patients will receive gabapentin enacarbil orally one daily after dinner. After the four-week treatment period with gabapentin enacarbil, a one-week post-observation period will be undertaken.
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Ages Eligible for Study:
20 Years to 80 Years (Adult, Senior)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Patients who have been diagnosed with restless legs syndrome (RLS) according to the international RLS Study Group Diagnostic Criteria
Patients whose score is 15 or greater on the International RLS (IRLS) Rating Scale on the first day of the pre-observation period.
Patients whose creatinine clearance level at the first day of pre-observation period is ≥30 mL/min to <60mL/min estimated by Cockcroft-Gaul t equation
Patients who provide written consent
Patients with sleep disorder such as sleep apnea syndrome, which affects the RLS evaluation
Patients with history of augmentation and treatment rebound of RLS symptoms when using dopamine agonis
Patients with neuropathy and movement disorder (diabetic neuropathy, Parkinson's disease, multiple sclerosis, dyskinesia, rheumatoid arthritis etc)
Patients with uncontrolled diabetes [HbA1c>7.5% (NGSP value), in the past six months], iron deficiency anemia, or drug administration of hypnotic sedatives.
Patients who attempted suicide within six months prior to the consent obtained, or who have been diagnosed as a suicide risk by investigator or sub-investigator
Patients with moderate or severe depression
Patients with alcohol dependence or drug intoxication or who have a history of abuse or drug dependence in the past one year
Patients whose job is shift work, professional driver, or engaging in hazardous activities such as operating machinery
Patients with history of hypersensitivity to gabapentin
Patients who have experience to participate in other post-marketing clinical studies or clinical trials within 12 weeks prior to the start of pre-observation
Others: patients who are concluded to be ineligible by an investigator or sub-investigator as ineligible