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NCT05095454

Short-Term Transcutaneous or Epidural Spinal Stimulation for Enabling Motor Function in Humans With SCI

Completed NA Results posted Last updated 9 July 2024
What this trial tests

NA trial testing Percutaneous epidural electrical spinal stimulation in Paraplegia in 6 participants. Completed in 30 March 2023.

Timeline
4 March 2022
Primary endpoint
30 March 2023
30 March 2023

Quick facts

Lead sponsorKristin Zhao, PhD
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingnone
Primary purposebasic science
Enrollment6
Start date4 March 2022
Primary completion30 March 2023
Estimated completion30 March 2023
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

Kristin Zhao, PhD

Who can join

22 and older, any sex, with Paraplegia or Tetraplegia. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Electromyography Primary · Through study completion; an average of 5 months.

Change in voltage measurements in major muscle groups below the level of injury. Specifically, change in soleus root mean square voltage during standing with and without stimulation.

GroupValue95% CI
Percutaneous Epidural Stimulation0.00017507± 0.04279603
Transcutaneous Epidural Stimulation0.00006740± 0.05917040
Foot Pressure Primary · Beginning of intervention to end of intervention, an average of 17 days.

Change in measurements of foot pressure in kilograms through shoe-insole pressure sensors.

Beginning of intervention
GroupValue95% CI
Percutaneous Epidural Stimulation6± 9
Transcutaneous Epidural Stimulation0± 0
End of intervention
GroupValue95% CI
Percutaneous Epidural Stimulation40± 34
Transcutaneous Epidural Stimulation0± 0
Somatosensory Evoked Potentials Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Measurements of change in voltage in the conduction of electricity through the peripheral nerves, cervical and lumbosacral spinal cord, deep brain structures, and sensory cortex, using surface electrodes.

Left sided measurements
GroupValue95% CI
Percutaneous Epidural Stimulation0.67± 0.6
Transcutaneous Epidural Stimulation0.8± 0.99
Right sided measurements
GroupValue95% CI
Percutaneous Epidural Stimulation0.33± 0.12
Transcutaneous Epidural Stimulation0.35± 0.07
Transcranial Magnetic Stimulation Motor Evoked Potentials Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Measurement of the threshold percentage change in voltage between pre-intervention and post-intervention in the first trapezius or deltoid muscle activated.

GroupValue95% CI
Percutaneous Epidural Stimulation3.33± 5.77
Transcutaneous Epidural Stimulation5± 7.07
Injury Severity: International Standards for Neurological Classification of Spinal Cord Injury Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Change sensory and motor function impairment using the American Spinal Injury Association Impairment Scale. Individuals are classified from A" (complete SCI) to "E" (normal function). 28 dermatomes and 10 key muscles are assessed bilaterally. Summed results produce overall sensory and motor scores and combine with evaluation of anal sensory and motor function in determination of AIS classification. Sensory scores are rated 0 (sensation absent) to 2 (normal), bilaterally for each of 28 dermatomes. Muscle function is rated 0 (total paralysis) to 5 (active movement, full range of motion against s

Change between Complete (C) and Incomplete (I) designations
GroupValue95% CI
Percutaneous Epidural Stimulation0
Transcutaneous Epidural Stimulation0
Change in ASIA Impairment Scale (AIS) rating
GroupValue95% CI
Percutaneous Epidural Stimulation0
Transcutaneous Epidural Stimulation0
Change in sensation of Deep Anal Pressure (DAP)
GroupValue95% CI
Percutaneous Epidural Stimulation0
Transcutaneous Epidural Stimulation0
Change in Voluntary Anal Contraction (VAC)
GroupValue95% CI
Percutaneous Epidural Stimulation0
Transcutaneous Epidural Stimulation0
Patient-reported Bowel Function Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Measurement of change in bowel function using the Neurogenic Bowel Dysfunction Score. Answers to qualitative questions are rated from 0 to 5, with a higher number indicating more problematic symptoms, and totaled for a score which categorizes severity of neurogenic bowel symptoms. The total score ranges between 0 and 44 points. A higher total score indicates more severe bowel symptoms.

GroupValue95% CI
Percutaneous Epidural Stimulation-4-6 – -2
Transcutaneous Epidural Stimulation-3.5-12 – 5
Patient-reported Bladder Function Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Measurement of change in bladder function using the Neurogenic Bladder Symptom Score. Answers to qualitative questions are rated from 0 to 5, with a higher number indicating more problematic symptoms, and totaled for a score which categorizes severity of neurogenic bladder symptoms. The total score can range from 0 (no symptoms at all) to 74 (maximum symptoms).

GroupValue95% CI
Percutaneous Epidural Stimulation-11.3-12 – -8
Transcutaneous Epidural Stimulation-4.5-6 – -3
Male Patient-reported Sexual Function (1) Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Measurement of change in erectile dysfunction using the Sexual Health Inventory for Men (SHIM). Answers to qualitative questions are rated from 0 to 5, with a higher number indicating better erectile function, and totaled for a score which categorizes severity of erectile dysfunction. Total score can range from 1 to 25, with a lower number indicating more severe erectile dysfunction.

GroupValue95% CI
Percutaneous Epidural Stimulation-6.3-14 – 2
Transcutaneous Epidural Stimulation0-1 – 1
Male Patient-reported Sexual Function (2) Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Measurement of change in erectile dysfunction using the International Index for Erectile Function (IIEF). Answers to qualitative questions are rated from 0 to 5, with a higher number indicating better erectile function, and totaled for a score which categorizes severity of erectile dysfunction. Total scores range from 5 to 25, with a lower score indicating more severe erectile dysfunction.

GroupValue95% CI
Percutaneous Epidural Stimulation-23.3-35 – -11
Transcutaneous Epidural Stimulation-1.5-2 – -1
Spasticity Primary · Assessed at Baseline, 4 Weeks, 8 Weeks, and 20 Weeks; change from Baseline at week 20 reported.

Change in measurements of spasticity using the Spinal Cord Injury Spasticity Evaluation Tool (SCI-SET). Answers to qualitative questions are rated from -3 to +3, with a higher positive number indicating more helpful symptoms, and a lower negative number indicating more problematic symptoms. Questions may also be answered as not applicable (N/A), which do not generate a score. Scores are totaled for a score which categorizes the overall positive or negative impact of a subject's spasticity symptoms. Total score can range from -105 (negative impact) to +105 (positive impact), and the score is av

GroupValue95% CI
Percutaneous Epidural Stimulation0.057-0.033 – 0.090
Transcutaneous Epidural Stimulation0.088-0.207 – 0.383
Neurostimulation User Experience Primary · End of intervention, an average of 4 weeks

Rating of the subject's perception of individual aspects of spinal stimulation using the User Experience Questionnaire (UEQ), a survey including 26 descriptive terms and their antonyms. A scoring scale ranging from 1 to 7 determines how closely the subject feels the term or its antonym applies to the intervention, with lower numbers indicating agreement with the term, and higher numbers indicating agreement with the antonym. The terms and antonyms describe a positive and negative perception of each item. Subscales grouping terms into like categories average scores into a 7 point range from -3

Attractiveness
GroupValue95% CI
Percutaneous Epidural Stimulation3± 0
Transcutaneous Epidural Stimulation2.5± 0
Perspicuity
GroupValue95% CI
Percutaneous Epidural Stimulation1.5± 0.707
Transcutaneous Epidural Stimulation1.917± 0.382
Efficiency
GroupValue95% CI
Percutaneous Epidural Stimulation2.583± 0.382
Transcutaneous Epidural Stimulation2± 0.354
Dependability
GroupValue95% CI
Percutaneous Epidural Stimulation2.083± 0.520
Transcutaneous Epidural Stimulation1.75± 0.354
Stimulation
GroupValue95% CI
Percutaneous Epidural Stimulation2.917± 0.144
Transcutaneous Epidural Stimulation2± 0.354
Novelty
GroupValue95% CI
Percutaneous Epidural Stimulation2.583± 0.382
Transcutaneous Epidural Stimulation1.75± 1.414
Overground Ambulation [as Appropriate to the Subject] Primary · Baseline, 4 Weeks, 8 Weeks, and 20 Weeks

Measurement of changes in overground mobility as measured by the Modified 6 Minute Walk Test. Trainers will assess the distance in meters which the subject can cover in 6 minutes, with a greater distance characterizing better overground mobility.

Pre-intervention to post-intervention
GroupValue95% CI
Percutaneous Epidural Stimulation9.2
Pre-intervention to 8 weeks post intervention
GroupValue95% CI
Percutaneous Epidural Stimulation16.5
Pre-intervention to 20 weeks post intervention
GroupValue95% CI
Percutaneous Epidural Stimulation16.5

Adverse events — posted to ClinicalTrials.gov

Time frame: Adverse events were assessed over the course of approximately 20 weeks.. Reporting threshold: 0%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Percutaneous Epidural Stimulation
Serious: 0/3 (0%)
Deaths: 0/3
Transcutaneous Epidural Stimulation
Serious: 1/3 (33%)
Deaths: 0/3

Serious adverse events (1 terms)

ReactionSystemPercutaneous Epidural Stim…Transcutaneous Epidural St…
NephrolithiasisRenal and urinary disorders
Other adverse events (14 terms — click to expand)

ReactionSystemPercutaneous Epidural Stim…Transcutaneous Epidural St…
Urinary tract infectionRenal and urinary disorders
Orthostatic hypotensionVascular disorders
Bowel incontinenceGastrointestinal disorders
PetechiaeSkin and subcutaneous tissue disorders
Urinary incontinenceRenal and urinary disorders
Serosanguinous drainageSkin and subcutaneous tissue disorders
Urethral irritation post urodynamics studyRenal and urinary disorders
HeadacheNervous system disorders
Low back painMusculoskeletal and connective tissue disorders
PresyncopeNervous system disorders
COVID-19 infectionRespiratory, thoracic and mediastinal disorders
Skin irritationSkin and subcutaneous tissue disorders
Autonomic dysreflexiaNervous system disorders
HemorrhoidsVascular disorders

Most-reported serious reactions: Nephrolithiasis.

Data from ClinicalTrials.gov NCT05095454 adverse events section.

Sponsor's own description

A study comparing short-term delivery of epidural spinal stimulation versus transcutaneous spinal stimulation.

Publications & conference data

3 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Functional outcomes and participants' perspectives during short-term application of spinal stimulation in individuals with spinal cord injury.
    Veith DD, Gill ML, Beck LA, Whitmarsh CL, et al · · 2025 · cited 3× · PMID 39172032 · DOI 10.1080/10790268.2024.2383377
  2. Therapy-specific motoneuron activation with epidural and dorsal root ganglion stimulation in spinal cord injury.
    Asp AJ, Gill ML, Fernandez KA, Veith DD, et al · · 2026 · PMID 41963069 · DOI 10.1152/jn.00438.2025
  3. ISNCSCI Exam Changes Following Spinal Cord Stimulation.
    Solinsky RJ, Veith DD, Gill ML, Beck LA, et al · · 2025 · PMID 40862210 · DOI 10.46292/sci25-00017

Verify or expand the search:

Other recruiting trials for Paraplegia

Currently open trials in the same condition.

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing