- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07822932
Auricular Vagus Nerve Stimulation Mechanisms for HIV-Associated Peripheral Neuropathy
10 septembre 2026 mis à jour par: Marlon Wong, University of Miami
Mechanistic Modulation of HIV-Associated Peripheral Neuropathy in Older Adults Via Auricular Vagus Nerve Stimulation
This study looks at a non-invasive ear stimulation treatment to better understand nerve pain in people living with HIV.
The study aims to assess how the body and nervous system respond to this treatment, including changes in heart function and pain signals.
The goal is to learn how future treatments for nerve pain may be improved.
Aperçu de l'étude
Statut
Pas encore de recrutement
Les conditions
Intervention / Traitement
Type d'étude
Interventionnel
Inscription (Estimé)
70
Phase
- N'est pas applicable
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Coordonnées de l'étude
- Nom: Marlon L Wong, PT, PhD
- Numéro de téléphone: 3052842670
- E-mail: mwong2@miami.edu
Sauvegarde des contacts de l'étude
- Nom: Richard Martinez, MS
- Numéro de téléphone: 305-284-2359
- E-mail: rxm1388@med.miami.edu
Lieux d'étude
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Florida
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Miami, Florida, États-Unis, 33136
- Christine E Lynn Rehabilitation Center
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Contact:
- Marlon L Wong, PT, PhD
- E-mail: mwong2@miami.edu
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Chercheur principal:
- Marlon L. Wong, PT, PhD
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Contact:
- Richard A Martinez, MS
- Numéro de téléphone: 305-284-2359
- E-mail: rxm1388@med.miami.edu
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-
Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Non
La description
Inclusion Criteria:
- Established HIV infection
- Glove/stocking dysesthesias lasting for ≥3 months
- HIV-associated peripheral neuropathy (HIV-PN) related symptoms ≥4 (on a scale of 0-10) within the last week
- Stable medical care (i.e., no changes in Antiretroviral Therapy or pain medication within 2 months of enrollment)
- Able to read the consent form, demonstrate understanding of study procedures and requirements, and independently provide written informed consent
Exclusion Criteria:
- Unstable cardiac disease
- Implanted electronic or magnetic devices (e.g., pacemaker, cochlear implants, medication pumps, and other implanted neurostimulation systems)
- Head or neck cancer or metastases
- Recent ear trauma or metal implants in the head
- History of epilepsy, unprovoked seizure, stroke, brain tumor, significant traumatic brain injury, prior intracranial surgery, or other neurological condition associated with increased seizure risk
- Active or uncontrolled comorbidities that independently cause neuropathy (e.g., recent chemotherapy, uncontrolled diabetes with documented neuropathic complications)
- Clinical evidence of non-HIV neuropathy (e.g., neuropathic symptoms predating HIV diagnosis, uncontrolled diabetes)
- Known allergy to tape/adhesive
- Ferromagnetic or non-MRI-compatible metal in the head, neck, eye, or cranial region, including aneurysm clips, retained metal fragments, bullets, shrapnel, or other metallic implants not demonstrated to be TMS-compatible.
- Pregnancy or actively breast feeding
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Seul
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Auricular Vagus Nerve (AVNS) Group
Participants in this group will receive 6 sessions of transcutaneous auricular vagus nerve stimulation (AVNS) over 2 weeks.
Each stimulation session will last approximately 90 minutes at monophasic pulses.
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Transcutaneous auricular vagus nerve stimulation (taVNS) will be administered at the cymba concha using hydrogel electrodes and a Digitimer DS8R biphasic constant-current stimulator.
Participants will receive 90-minute stimulation sessions consisting of monophasic pulses (pulse width: 500 microseconds; frequency: 25 Hz; duty cycle: 50%).
Stimulation intensity will be set at 200% of the participant's sensory perception threshold and may be adjusted up to 5 milliamperes (mA) while remaining below the pain threshold.
Autres noms:
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Aucune intervention: Waitlist Control
Participants in this group will not receive an intervention.
Participants will be placed on a waitlist to try the intervention and will be assessed pre and post the 2-week waiting period.
No stimulation device is provided, and no active treatment or experimental procedure is administered during the 14-day waitlist period.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Change in Short Interval intraCortical Inhibition (SICI)
Délai: Baseline (Day 0), Post-trial (Day 14)
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Short-interval intracortical inhibition (SICI) will be assessed using paired-pulse transcranial magnetic stimulation (TMS) with a MagPro X100 stimulator.
Change in SICI will be calculated as the difference between post-intervention and pre-intervention measurements.
Negative values indicate increased intracortical inhibition.
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Baseline (Day 0), Post-trial (Day 14)
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Change in Root Mean Square of Successive Differences (RMSSD)
Délai: (Days 1-13), Post-trial (Day 14)
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The root mean square of successive differences (RMSSD), will be assessed using a three-lead electrocardiogram (ECG).
Change in RMSSD will be calculated as the difference between post-intervention and baseline measurements.
Higher RMSSD values indicate greater parasympathetic (vagal) activity and heart rate variability.
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(Days 1-13), Post-trial (Day 14)
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Change in Neuropathic Pain Symptom Severity (NPSI)
Délai: Baseline (Day 0), post-trial (Day 14)
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Neuropathic pain symptom severity will be assessed using the Neuropathic Pain Symptom Inventory (NPSI), a patient-reported questionnaire that evaluates 10 neuropathic pain symptoms on an 11-point numeric scale ranging from 0 (no symptom) to 10 (worst symptom severity imaginable).
The NPSI also includes 2 items assessing the duration of ongoing pain and the frequency of pain attacks.
Higher scores indicate greater neuropathic pain symptom severity.
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Baseline (Day 0), post-trial (Day 14)
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Change in Neuropathic Symptom Intensity (Numeric Rating Scale)
Délai: Baseline (Day 0), pre/post each treatment session (Days 1-13), post-trial (Day 14), and at follow up (Day 45)
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Neuropathic symptom intensity will be assessed using the 0-10 Numeric Rating Scale (NRS).
Participants will rate the average severity of HIV-associated peripheral neuropathy symptoms from 0 (not bothersome) to 10 (worst imaginable).
Higher scores indicate greater symptom intensity.
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Baseline (Day 0), pre/post each treatment session (Days 1-13), post-trial (Day 14), and at follow up (Day 45)
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Change in Serum Neurofilament Light Chain (NfL)
Délai: Baseline (Day 0), Post-trial (Day 14)
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Serum neurofilament light chain (NfL) will be measured from non-fasted venous blood samples.
NfL concentrations (pg/mL) will be quantified using enzyme-linked immunosorbent assay (ELISA).
Change in NfL will be calculated as the difference between post-intervention and baseline serum concentrations.
Higher concentrations indicate greater neuroaxonal injury.
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Baseline (Day 0), Post-trial (Day 14)
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Change in Serum Interleukin-1 Beta (IL-1β)
Délai: Baseline (Day 0), Post-trial (Day 14)
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Serum interleukin-1 beta (IL-1β) will be measured from non-fasted venous blood samples.
IL-1β concentrations (pg/mL) will be quantified using enzyme-linked immunosorbent assay (ELISA).
Change in IL-1β will be calculated as the difference between post-intervention and baseline serum concentrations.
Higher concentrations indicate greater systemic inflammation.
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Baseline (Day 0), Post-trial (Day 14)
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Change in Serum Tumor Necrosis Factor-Alpha (TNF-α)
Délai: Baseline (Day 0), Post-trial (Day 14)
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Serum Tumor Necrosis Factor-Alpha (TNF-α) will be measured from non-fasted venous blood samples.
TNF-α concentrations (pg/mL) will be quantified using enzyme-linked immunosorbent assay (ELISA).
Change in TNF-α will be calculated as the difference between post-intervention and baseline serum concentrations.
Higher concentrations indicate greater systemic inflammation.
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Baseline (Day 0), Post-trial (Day 14)
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Change in Wind-Up Ratio (WUR)
Délai: Baseline (Day 0), Pre/post each treatment session (Days 1-13), Post-trial (Day 14)
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Wind-up ratio (WUR), will be assessed using responses to repeated pinprick stimuli.
Change in WUR will be calculated as the difference between post-intervention and baseline measurements.
Lower WUR values indicate reduced temporal summation and decreased central sensitization.
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Baseline (Day 0), Pre/post each treatment session (Days 1-13), Post-trial (Day 14)
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Change in Conditioned Pain Modulation (CPM)
Délai: Baseline (Day 0), Post-trial (Day 14)
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Conditioned pain modulation (CPM), will be assessed using a cold pressor conditioning stimulus (1 to 4°C for 60 seconds) and pressure pain threshold (PPT) testing on the forearm.
The CPM effect will be calculated as the percent change in PPT from before to after the conditioning stimulus (%ΔPPT).
Higher CPM values indicate greater endogenous pain inhibition.
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Baseline (Day 0), Post-trial (Day 14)
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Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Parrainer
Les enquêteurs
- Chercheur principal: Marlon L. Wong, PT, PhD, University of Miami
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude (Estimé)
1 novembre 2026
Achèvement primaire (Estimé)
30 août 2028
Achèvement de l'étude (Estimé)
30 septembre 2028
Dates d'inscription aux études
Première soumission
10 septembre 2026
Première soumission répondant aux critères de contrôle qualité
10 septembre 2026
Première publication (Réel)
16 septembre 2026
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
16 septembre 2026
Dernière mise à jour soumise répondant aux critères de contrôle qualité
10 septembre 2026
Dernière vérification
1 septembre 2026
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 20260653
- 1R21NS149935-01 (Subvention/contrat des NIH des États-Unis)
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
OUI
Description du régime IPD
De-identified participant-level clinical, physiological, biomarker, and patient-reported outcome data underlying published study findings.
Délai de partage IPD
By publication of primary study findings or no later than the end of the award period
Critères d'accès au partage IPD
The study protocol, statistical analysis plan, informed consent form template, and analytic code will be made available upon publication of the primary results or study completion, consistent with the approved NIH Data Management and Sharing Plan.
Materials will be shared through appropriate repositories and/or institutional platforms in accordance with participant privacy protections and applicable policies.
Type d'informations de prise en charge du partage d'IPD
- PROTOCOLE D'ÉTUDE
- SÈVE
- CIF
- ANALYTIC_CODE
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Non
Étudie un produit d'appareil réglementé par la FDA américaine
Non
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .