About this trial
The goal of this \[study type: clinical trial\] is to \[primary purpose: evaluate the efficacy and safety of a novel calcium channel modulator in treating Restless Legs Syndrome (RLS) and its variant subtypes\] in \[describe participant population/primary condition: adult patients aged 18-75 years with confirmed RLS or its variant subtypes, who meet the study's eligibility criteria\]. The main question\[s\] it aims to answer \[is/are\]:
* Does the novel calcium channel modulator improve RLS-related symptoms (assessed by the International Restless Legs Syndrome Study Group Rating Scale, IRLS) after the treatment period? * What is the safety profile (incidence of adverse events) of this calcium channel modulator in RLS patients?
Participants will \[describe the main tasks participants will be asked to do, interventions they'll be given\]:
* Receive oral administration of the novel calcium channel modulator (40mg twice daily) for 12 consecutive weeks * Complete scheduled follow-up visits for symptom assessments, safety monitoring, and questionnaire completion
Eligibility criteria
Qualifiers
1. Aged 18-75 years, regardless of gender.
2. Meets the diagnostic criteria for typical Restless Legs Syndrome (RLS) (IRLSSG criteria) or variant RLS confirmed by a neurologist.
3. Moderate to severe RLS (IRLS score ≥11).
4. Able to understand and comply with the study protocol, and provides written informed consent.
Disqualifiers
1. Secondary RLS (e.g., iron deficiency anemia with serum ferritin <30μg/L, renal dysfunction with eGFR <30ml/min, pregnancy/lactation, drug-induced RLS with unadjustable medications).
2. Severe central nervous system diseases (e.g., status epilepticus, severe dementia, stroke within 3 months).
3. Severe cardiovascular diseases (e.g., congestive heart failure, uncontrolled hypertension with SBP≥180mmHg or DBP≥110mmHg).
4. Severe liver or kidney dysfunction (ALT/AST >3×ULN, eGFR <30mL/min/1.73m²).
Trial design
Treatments tested in this trial
- Crisugabalin