search
Back to results

Noninvasive Peripheral Nerve Stimulation for Restless Legs Syndrome

Primary Purpose

Restless Legs Syndrome

Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
Noctrix Health NPNS device v1.0 - Active
Noctrix Health NPNS device v1.0 - Sham
Sponsored by
Noctrix Health, Inc.
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional device feasibility trial for Restless Legs Syndrome

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Subject has moderate-severe RLS symptoms as defined by a score of 15 or greater points on IRLS.
  • RLS symptoms are primarily noticeable in the subject's lower legs and/or feet.
  • Subject reports having a medical diagnosis of primary idiopathic restless legs syndrome (RLS) or Willis-Ekbom Disorder (WED) OR Investigator has diagnosed the subject with primary idiopathic restless legs syndrome (RLS) or Willis-Ekbom Disorder (WED).
  • Subject has experienced RLS symptoms at night on 2 or more nights per week during the previous month.
  • On typical dose and schedule of RLS medication (if any), subject typically experiences RLS symptoms on 2 or more nights per week.
  • RLS symptoms are primarily in the evening and night.
  • Subject owns the necessary equipment to respond to texts, phone calls, and video calls.
  • Subject is 18 years of age or older when written informed consent is obtained.
  • Subject has signed a valid, Institutional Review Board (IRB)-approved informed consent form, can understand the requirements of the study and instructions for device usage, and can converse in English.

Exclusion Criteria:

  • Subject has RLS that is known to be caused by another diagnosed condition.
  • Subject has active implantable medical devices anywhere in the body (including pacemakers), or passive medical devices implanted in the leg.
  • Subject has an uncontrolled sleep disorder other than RLS that significantly interferes with their sleep as determined by the trial director or physician.
  • Subject has been diagnosed with one of the following conditions: Epilepsy or other seizure disorder, Cellulitis or open sores of the legs, Renal failure, Iron-Deficiency Anemia, Severe movement disorder symptoms (Parkinson's disease, Huntington's disease, dyskinesia, dystonia), Deep Vein Thrombosis, Stage 4-5 Chronic Kidney Disease, Multiple sclerosis, Current, active or acute or chronic infection other than viral upper respiratory tract infections, A malignancy within the past 5 years (not including basal or squamous cell skin cancer)
  • Subject is on dialysis or anticipated to start dialysis while participating in the study
  • Subject is allergic to electrode gel, polyurethane foam, or lycra.
  • Subject has severe edema in lower legs.
  • Subject has failed a nerve conduction study prescribed by a physician or has been diagnosed with severe peripheral neuropathy.
  • During Visit 1, subject cannot notice the stimulation at the maximal dose or cannot tolerate the stimulation at the minimal effective dose
  • Subject selects Statement 2 or is unable to decide which of the following two statements most closely describe their condition: Statement 1: My symptoms are best characterized by a strong or overwhelming urge to move my legs. Moving my legs often results in temporary relief of that urge. Statement 2: My symptoms are best characterized by involuntary leg spasms that happen at regular intervals. These leg spasms can wake me up in the middle of the night."
  • Subject has significantly changed medication dose or schedule of antidepressants, sleep medications, or RLS medications within the past 30 days.
  • Recent history of alcohol or recreational drug abuse (within the past 6 months).
  • Subject has received an investigational drug or device within the last 30 days or is planning to receive an investigational device during the duration of the study.
  • Subject has undergone a major surgery (excluding dental work) in the previous 30 days.
  • Subject has another medical condition that may affect validity of the study or put the subject at risk as determined by the investigator.
  • Subject is unable or unwilling to comply with study requirements

Sites / Locations

  • Mark J Buchfuhrer private practice
  • SRI International Human Sleep Research Lab
  • Sleep Medicine Specialists of California

Arms of the Study

Arm 1

Arm 2

Arm Type

Active Comparator

Sham Comparator

Arm Label

Noninvasive Peripheral Nerve Stimulation

Sham control

Arm Description

NPNS device programmed to deliver active stimulation.

NPNS device programmed to deliver sham stimulation.

Outcomes

Primary Outcome Measures

Evaluate the clinical tolerability, usability, and patient response for the prototype device, with the intention of improving overall device performance.
Subject satisfaction and usability questionnaire

Secondary Outcome Measures

Change from baseline in International Restless Legs Syndrome Study Group Rating Scale (IRLS) score at week 2
International Restless Legs Syndrome Study Group Rating Scale is a participant-rated questionnaire that rates RLS severity from 0-40, where 40 is the most severe.
Change to Summary NRS score of RLS symptom severity
Participant rating of average RLS symptom severity from 0-10 on a Numerical Rating Scale (NRS) scale, where 10 is the most severe. Participants complete a single Summary NRS scale at the end of each 2-week intervention, rating the average RLS symptoms before, during, and after device usage.
Change to Daily NRS score of RLS symptom severity
Participant rating of average RLS symptom severity from 0-10 on a Numerical Rating Scale (NRS) scale, where 10 is the most severe. Participants complete the Daily NRS scale each day during each 2-week intervention, rating the RLS symptoms before, during, and after the previous night of device use.
Responder rate on CGI-I scale at week 2 relative to baseline
Responder rate is defined as the proportion of responses of "Much Improved" or "Very Much Improved" relative to baseline on the 7-point participated-rated Clinical Global Impressions-Improvement (CGI-I) scale.

Full Information

First Posted
January 4, 2021
Last Updated
January 5, 2021
Sponsor
Noctrix Health, Inc.
search

1. Study Identification

Unique Protocol Identification Number
NCT04700683
Brief Title
Noninvasive Peripheral Nerve Stimulation for Restless Legs Syndrome
Official Title
Chronic Efficacy and Usability of Transcutaneous Electrical Nerve Stimulation in Subjects With Restless Leg Syndrome (RLS)
Study Type
Interventional

2. Study Status

Record Verification Date
January 2021
Overall Recruitment Status
Completed
Study Start Date
July 14, 2019 (Actual)
Primary Completion Date
March 1, 2020 (Actual)
Study Completion Date
March 1, 2020 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Noctrix Health, Inc.

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
Yes
Device Product Not Approved or Cleared by U.S. FDA
Yes
Product Manufactured in and Exported from the U.S.
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
Prospective multi-site randomized sham-controlled crossover feasibility study evaluating tolerability and efficacy of noninvasive peripheral nerve stimulation (NPNS) for patients with moderate-severe primary Restless Legs Syndrome (RLS). Response to NPNS investigational device was compared to sham control in a 2x2 crossover design such that subjects were assigned to receive 2 weeks of NPNS and 2 weeks of sham, in randomized order.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Restless Legs Syndrome

7. Study Design

Primary Purpose
Device Feasibility
Study Phase
Not Applicable
Interventional Study Model
Crossover Assignment
Masking
Participant
Allocation
Randomized
Enrollment
43 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Noninvasive Peripheral Nerve Stimulation
Arm Type
Active Comparator
Arm Description
NPNS device programmed to deliver active stimulation.
Arm Title
Sham control
Arm Type
Sham Comparator
Arm Description
NPNS device programmed to deliver sham stimulation.
Intervention Type
Device
Intervention Name(s)
Noctrix Health NPNS device v1.0 - Active
Intervention Description
Wearable device programmed to deliver electrical stimulation to peripheral nerves of the lower limbs.
Intervention Type
Device
Intervention Name(s)
Noctrix Health NPNS device v1.0 - Sham
Intervention Description
Wearable device programmed to deliver sham stimulation.
Primary Outcome Measure Information:
Title
Evaluate the clinical tolerability, usability, and patient response for the prototype device, with the intention of improving overall device performance.
Description
Subject satisfaction and usability questionnaire
Time Frame
Weeks 1-2 of each intervention
Secondary Outcome Measure Information:
Title
Change from baseline in International Restless Legs Syndrome Study Group Rating Scale (IRLS) score at week 2
Description
International Restless Legs Syndrome Study Group Rating Scale is a participant-rated questionnaire that rates RLS severity from 0-40, where 40 is the most severe.
Time Frame
Week 2 of each intervention compared to week prior to study entry
Title
Change to Summary NRS score of RLS symptom severity
Description
Participant rating of average RLS symptom severity from 0-10 on a Numerical Rating Scale (NRS) scale, where 10 is the most severe. Participants complete a single Summary NRS scale at the end of each 2-week intervention, rating the average RLS symptoms before, during, and after device usage.
Time Frame
Weeks 1-2 of each intervention
Title
Change to Daily NRS score of RLS symptom severity
Description
Participant rating of average RLS symptom severity from 0-10 on a Numerical Rating Scale (NRS) scale, where 10 is the most severe. Participants complete the Daily NRS scale each day during each 2-week intervention, rating the RLS symptoms before, during, and after the previous night of device use.
Time Frame
Weeks 1-2 of each intervention
Title
Responder rate on CGI-I scale at week 2 relative to baseline
Description
Responder rate is defined as the proportion of responses of "Much Improved" or "Very Much Improved" relative to baseline on the 7-point participated-rated Clinical Global Impressions-Improvement (CGI-I) scale.
Time Frame
Week 2 of each intervention compared to week prior to study entry
Other Pre-specified Outcome Measures:
Title
Change to NRS score of RLS severity during SIT procedure
Description
The 60-minute Suggested Immobilization Test (SIT) assesses RLS symptom severity in a controlled procedure in the following three conditions: no device, NPNS device, Sham device. At SIT start and after every 10 minutes, the participant rates average RLS symptom severity from 0-10 on a Numerical Rating Scale (NRS) scale, where 10 is the most severe.
Time Frame
During the 60 minute SIT procedure

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Subject has moderate-severe RLS symptoms as defined by a score of 15 or greater points on IRLS. RLS symptoms are primarily noticeable in the subject's lower legs and/or feet. Subject reports having a medical diagnosis of primary idiopathic restless legs syndrome (RLS) or Willis-Ekbom Disorder (WED) OR Investigator has diagnosed the subject with primary idiopathic restless legs syndrome (RLS) or Willis-Ekbom Disorder (WED). Subject has experienced RLS symptoms at night on 2 or more nights per week during the previous month. On typical dose and schedule of RLS medication (if any), subject typically experiences RLS symptoms on 2 or more nights per week. RLS symptoms are primarily in the evening and night. Subject owns the necessary equipment to respond to texts, phone calls, and video calls. Subject is 18 years of age or older when written informed consent is obtained. Subject has signed a valid, Institutional Review Board (IRB)-approved informed consent form, can understand the requirements of the study and instructions for device usage, and can converse in English. Exclusion Criteria: Subject has RLS that is known to be caused by another diagnosed condition. Subject has active implantable medical devices anywhere in the body (including pacemakers), or passive medical devices implanted in the leg. Subject has an uncontrolled sleep disorder other than RLS that significantly interferes with their sleep as determined by the trial director or physician. Subject has been diagnosed with one of the following conditions: Epilepsy or other seizure disorder, Cellulitis or open sores of the legs, Renal failure, Iron-Deficiency Anemia, Severe movement disorder symptoms (Parkinson's disease, Huntington's disease, dyskinesia, dystonia), Deep Vein Thrombosis, Stage 4-5 Chronic Kidney Disease, Multiple sclerosis, Current, active or acute or chronic infection other than viral upper respiratory tract infections, A malignancy within the past 5 years (not including basal or squamous cell skin cancer) Subject is on dialysis or anticipated to start dialysis while participating in the study Subject is allergic to electrode gel, polyurethane foam, or lycra. Subject has severe edema in lower legs. Subject has failed a nerve conduction study prescribed by a physician or has been diagnosed with severe peripheral neuropathy. During Visit 1, subject cannot notice the stimulation at the maximal dose or cannot tolerate the stimulation at the minimal effective dose Subject selects Statement 2 or is unable to decide which of the following two statements most closely describe their condition: Statement 1: My symptoms are best characterized by a strong or overwhelming urge to move my legs. Moving my legs often results in temporary relief of that urge. Statement 2: My symptoms are best characterized by involuntary leg spasms that happen at regular intervals. These leg spasms can wake me up in the middle of the night." Subject has significantly changed medication dose or schedule of antidepressants, sleep medications, or RLS medications within the past 30 days. Recent history of alcohol or recreational drug abuse (within the past 6 months). Subject has received an investigational drug or device within the last 30 days or is planning to receive an investigational device during the duration of the study. Subject has undergone a major surgery (excluding dental work) in the previous 30 days. Subject has another medical condition that may affect validity of the study or put the subject at risk as determined by the investigator. Subject is unable or unwilling to comply with study requirements
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Jonathan D Charlesworth, PhD
Organizational Affiliation
Noctrix Health, Inc.
Official's Role
Study Director
Facility Information:
Facility Name
Mark J Buchfuhrer private practice
City
Downey
State/Province
California
ZIP/Postal Code
90241
Country
United States
Facility Name
SRI International Human Sleep Research Lab
City
Menlo Park
State/Province
California
ZIP/Postal Code
94025
Country
United States
Facility Name
Sleep Medicine Specialists of California
City
San Ramon
State/Province
California
ZIP/Postal Code
94583
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
No
Citations:
PubMed Identifier
33949942
Citation
Buchfuhrer MJ, Baker FC, Singh H, Kolotovska V, Adlou B, Anand H, de Zambotti M, Ismail M, Raghunathan S, Charlesworth JD. Noninvasive neuromodulation reduces symptoms of restless legs syndrome. J Clin Sleep Med. 2021 Aug 1;17(8):1685-1694. doi: 10.5664/jcsm.9404.
Results Reference
derived

Learn more about this trial

Noninvasive Peripheral Nerve Stimulation for Restless Legs Syndrome

We'll reach out to this number within 24 hrs