Extension Study Evaluating NTX100 Neuromodulation System for Medication-Refractory Primary RLS

Restless Legs Syndrome Clinical Trial

Official title:

Open-label Extension Study to Evaluate Longer-Duration Response to the NTX100 Neuromodulation System for Patients With Medication-Refractory Primary Restless Legs Syndrome (RLS)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05196828
• Other study ID #: CT-05
• Status: Completed
• Phase: N/A
• Start date: December 20, 2021
• Est. completion date: November 18, 2022

Study information

• Verified date: January 2023
• Source: Noctrix Health, Inc.
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Multi-center, prospective open-label extension study of noninvasive peripheral nerve stimulation (NPNS) with the NTX100 Neuromodulation System for patients with medication-refractory moderate- severe primary RLS

Description:

This is an extension study only inviting subjects who have previously completed the RESTFUL Study (NCT04874155). Each study subject is enrolled into one of the following Arms: Arm 1 (Direct Roll-Over Extension): 24-week open-label NPNS followed by 8-weeks of no treatment, no delay after completion of the RESTFUL Study Arm 2 (Control Group): 24-weeks of no treatment

Recruitment information / eligibility

• Status: Completed
• Enrollment: 101
• Est. completion date: November 18, 2022
• Est. primary completion date: September 27, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 22 Years to 80 Years

Eligibility

Inclusion Criteria:

1. Subject previously completed the RESTFUL Study (NCT04874155).

2. Subject has signed a valid, IRB-approved informed consent form, can understand the requirements of the study and instructions for device usage, and can converse in English.

3. [applicable to Arm 1 only] Subject agrees to not change dosage or schedule of any medications that are known to impact RLS symptoms during the study, including RLS medications, antidepressants, sleep medications, or sedative antihistamines.

Exclusion Criteria:

1. [applicable to Arm 1 only] Subject has active medical device implant anywhere in the body (including but not limited to pacemakers, spinal cord stimulators, deep brain stimulators) or metal implant at the site of study device electrode application.

2. [applicable to Arm 1 only] Subject has been diagnosed with one of the following

conditions:

• Epilepsy or other seizure disorder Current, active or acute or chronic infection other than common cold [and except for acute infections with mild symptoms]
• A malignancy within the past 5 years (not including basal or squamous cell skin cancer)
• Stage 4-5 chronic kidney disease or renal failure
• Severe movement disorder symptoms (Parkinson's disease, Huntington's disease, dyskinesia, dystonia)
• Deep vein thrombosis
• Multiple sclerosis

3. Subject has moderate or severe cognitive disorder or mental illness.

4. [applicable to Arm 1 only] Subject has known allergy to device materials, electrode gel, polyurethane foam, or lycra (or severe previous reaction to medical adhesives or bandages).

5. [applicable to Arm 1 only] Subject has severe edema affecting lower legs.

6. [applicable to Arm 1 only] Subject has any of the following at or near the location of device application.

• Acute injury
• Cellulitis
• Open sores
• Other skin condition

7. [applicable to Arm 1 only] Subject is on dialysis or anticipated to start dialysis while participating in the study.

8. [applicable to Arm 1 only] Subject has received another investigational device or drug within 30 days before study entry, is planning to receive another investigational device or drug during the study, or is planning to change RLS medications during the study.

9. Subject is unable or unwilling to comply with study requirements.

10. [applicable to Arm 1 only] Subject is pregnant or trying to become pregnant.

11. Subject has a medical condition not listed above that may affect validity of the study as determined by the investigator.

12. [applicable to Arm 1 only] Subject has a medical condition not listed above that may put the subject at risk as determined by the investigator.

13. Subject was unwilling or unable to follow instructions in the RESTFUL Study, including missing 2 or more follow-up evaluations.

14. [applicable to Arm 1 only] Subject failed to properly operate the investigational devices during Weeks 5-8 of the RESTFUL Study.

15. [applicable to Arm 1 only] Subject experienced a significantly higher than expected rate of device malfunctions in the RESTFUL Study, such that the malfunctions appeared to be directly related to the subject's pattern of use.

Related Conditions & MeSH terms

• Psychomotor Agitation
• Restless Legs Syndrome
• Syndrome

Intervention

Device:
• NTX100 Neuromodulation System
Active Noninvasive peripheral nerve stimulation device programmed to active mode

Locations

Country	Name	City	State
United States	Neurotrials Research	Atlanta	Georgia
United States	FutureSearch Trials of Neurology	Austin	Texas
United States	Delta Waves, Inc.	Colorado Springs	Colorado
United States	Bogan Sleep Consultants, LLC	Columbia	South Carolina
United States	Ohio Sleep Medicine Institute	Dublin	Ohio
United States	Clayton Sleep Institute	Saint Louis	Missouri
United States	California Center for Sleep Disorders	San Leandro	California

Sponsors (1)

Lead Sponsor	Collaborator
Noctrix Health, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Responder rate on Clinical Global Impressions-Improvement (CGI-I) scale in Arm 1	Responder rate is defined as the proportion of responses of "Much Improved" or "Very Much Improved" relative to baseline on the investigator-rated 7-point CGI-I scale.	Week 24 of Arm 1 relative to entry to the RESTFUL study
Secondary	Responder rate on Patient Global Impressions-Improvement (PGI-I) scale in Arm 1	Responder rate is defined as the proportion of responses of "Much Improved" or "Very Much Improved" relative to baseline on the participant-rated 7-point PGI-I scale.	Week 24 of Arm 1 relative to entry to the RESTFUL study
Secondary	Mean International Restless Legs Syndrome Study Group Rating Scale (IRLS) score in Arm 1	IRLS is a participant-rated questionnaire that rates RLS severity from 0-40, where 40 is the most severe.	Week 24 of Arm 1 relative to entry to the RESTFUL study
Secondary	Mean Medical Outcomes Study Sleep Problems Index II (MOS-II) score in Arm 1	MOS-II is a subscale of the participant-rated MOS questionnaire that measures subjective sleep quality.	Week 24 of Arm 1 relative to entry to the RESTFUL study
Secondary	Mean Medical Outcomes Study Sleep Problems Index I (MOS-I) score in Arm 1	MOS-I is a subscale of the participant-rated MOS questionnaire that measures subjective sleep quality.	Week 24 of Arm 1 relative to entry to the RESTFUL study
Secondary	Frequency of RLS symptoms based on Question #7 in the International Restless Legs Syndrome Study Group Rating Scale (IRLS) score in Arm 1	IRLS Question #7 is a participant-rated question that measures frequency of RLS symptoms in terms of days per week.	Week 24 of Arm 1 relative to entry to the RESTFUL study