Clinical trial Recruiting at 1 site Early Phase 1 Interventional Ages 18 and up

Using trigeminal evoked responses to enhance rhizotomy for facial pain relief

Official title: Trigeminal Evoked Responses to Improve Rhizotomy

Run by University of Minnesota · NCT05738096 · Data updated 2026-11-12

This study is testing if measuring brain responses during surgery can help improve pain relief for adults with trigeminal neuralgia who are having rhizotomy.

More Trigeminal Neuralgia trials

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment30 (estimated)
SponsorUniversity of Minnesota
Academic / other
Locations1 site (Minneapolis, Minnesota)
StatusRecruiting
StartedNovember 1, 2023
Main results expectedNovember 1, 2027
Study endsNovember 1, 2027
Registry record updatedNovember 3, 2026
Trial IDNCT05738096 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 and older who are scheduled to undergo percutaneous rhizotomy for facial pain due to trigeminal neuralgia.

Probably not a fit

Patients with facial pain of unclear origin or those whose rhizotomy procedure has been canceled will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the feasibility of incorporating trigeminal somatosensory evoked potentials (TSEPs) into routine neurosurgical rhizotomy procedures for patients suffering from trigeminal neuralgia. By stimulating the trigeminal nerve and measuring the resulting electrical responses in the brain, researchers aim to improve the accuracy and effectiveness of the rhizotomy surgery. The study will involve adults scheduled for this procedure, assessing whether TSEPs can be reliably recorded during surgery. The goal is to enhance surgical outcomes for patients with debilitating facial pain.

Why it matters

Potential benefit: If successful, this approach could lead to more effective pain relief for patients suffering from trigeminal neuralgia.

How similar studies have gone: While TSEPs have been previously measured, this specific application in routine rhizotomy procedures is novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults of 18 years or older
* Scheduled to undergo percutaneous rhizotomy for facial pain

Exclusion Criteria:

* For TGN: Facial pain of unclear origin (i.e. not clearly TGN pain) or Rhizotomy procedure canceled
* For Healthy control: Diagnosis or history of facial pain such as TMD or TGN, History of migraine, History of any functional pain disorder: fibromyalgia, IBS, CRPS or Recent chronic pain (within last month)

Where it's running

  • University of Minnesota
    Minneapolis, Minnesota, United States
    Recruiting

Study contacts

  • Principal investigator: David P Darrow, MD — University of Minnesota
  • Study coordinator: Matthew Maple
  • Email: maple036@umn.edu
  • Phone: 612-626-3582

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.