Non-invasive treatment for ALS using MyoRegulator® device

Controlling Amyotrophic Lateral Sclerosis Motor Neuron Excitability Study

NA · PathMaker Neurosystems Inc. · NCT06649955

This study is testing whether the MyoRegulator® device can safely help people with ALS improve their movement and slow down the progression of the disease.

Quick facts

PhaseNA
Study typeInterventional
Enrollment15 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorPathMaker Neurosystems Inc. (industry)
Locations1 site (Boston, Massachusetts)
Trial IDNCT06649955 on ClinicalTrials.gov

What this trial studies

This study evaluates the feasibility and safety of the MyoRegulator® device, which utilizes multi-site direct current stimulation (DCS) to treat individuals with Amyotrophic Lateral Sclerosis (ALS). Following a previous feasibility study, CALM aims to gather additional evidence on the device's effectiveness in slowing disease progression and improving motor function. The study will involve a single-arm, open-label design, focusing on ALS patients diagnosed within the last 24 months and assessing various clinical endpoints over a longer follow-up period.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-80 with a recent diagnosis of sporadic or familial ALS and a slow vital capacity of at least 50% of predicted capacity.

Not a fit: Patients with advanced ALS symptoms or those who are currently receiving other investigational therapies may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could slow the progression of ALS and improve the quality of life for patients.

How similar studies have performed: Pre-clinical studies have shown promising results with similar neuromodulation approaches, suggesting potential for success in this clinical setting.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. 18-80 years of age inclusive
2. Sporadic or familial ALS diagnosed as clinically possible, probable, lab-supported probable, or definite ALS as defined by revised El Escorial criteria
3. Less than or equal to 3 years since ALS symptom onset
4. Slow Vital Capacity ≥ 50% of predicted capacity at the time of Screening as determined using a portable spirometer
5. For TTNCS: Median CMAP ≥ 1.5 mV
6. Willing to forgo botulinum toxin, phenol or alcohol injections, intrathecal baclofen, digitalis, and morphine for the study duration
7. Willing to refrain from participation in any other therapeutic clinical trial or investigational product for ALS for the duration of this study
8. Women must not be able to become pregnant (e.g., post-menopausal, surgically sterile, or using adequate birth control methods) for the duration of the study and 3 months after study completion.
9. Stable dose of rilutek (Riluzole), edaravone (Radicava), or tofersen (Qualsody) and oral medications for muscle spasms/cramps (e.g. mexiletine, quinine, quinidine, magnesium, gabapentin, oxcarbazepine, baclofen) for at least 30 days prior to the onset of participation in the study
10. ALS Functional Rating Score (ALSFRS-R) of greater than or equal to 35
11. Willing and able to give informed consent

Exclusion Criteria:

1. Study participants who are on permanent assisted ventilation (PAV) defined as \>22h of noninvasive or invasive ventilation a day for \> 7 consecutive days.
2. Study participants who have been diagnosed with ALS having only clinical bulbar involvement
3. Implanted intrathecal pump
4. Prior botulinum toxin injection(s) at any site within 12 weeks of study enrollment
5. Prior phenol or alcohol injections for spasticity within 6 months of study enrollment
6. Presence of potential tsDCS and/or TMS risk factors:

   1. Damaged skin at the stimulation sites (i.e., skin with ingrown hairs, acne, razor nicks, wounds that have not healed, recent scar tissue, broken skin, etc.)
   2. Presence of an electrically, magnetically or mechanically activated implant (including cardiac pacemaker) or any other electrically sensitive support system with the exception of loop recorders
   3. Ferromagnetic metal in the head, neck or any site of stimulation including, but not limited to, aneurysm clips, implanted medication pumps, implanted brain stimulators, pacemakers, cochlear implants, implanted metal prostheses or metal due to any injury; dental fillings are permitted. Jewelry must be removed during stimulation
   4. Seizures or unexplained spells of loss of consciousness during the previous 12 months
   5. Any cardiac abnormality that may be exacerbated by transthoracic electrical stimulation
   6. History of cord lesions or previous spinal surgery that may interfere with procedure as determined by the study MD
   7. History of intracranial brain lesions, cortical stroke or previous neurosurgery that may interfere with TMS (e.g., in regions to be stimulated for TMS evaluations) as reviewed and approved by the study MD
7. Any medical condition that would prevent the participant from being able to participate in the clinical outcome measures
8. Pregnant females, as determined by a pregnancy test at V1 (in females of child-bearing potential)

Where this trial is running

Boston, Massachusetts

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: ALS - Amyotrophic Lateral Sclerosis, ALS, Lou Gehrig's disease, Non-invasive, Multi-site direct current stimulation

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.