Pilot Study to Evaluate Changes in Intra-Epidermal Nerve Fiber Density (IENFD) in Patients With Small-Fiber Neuropathy (SAL SFN PILOT)
This prospective observational pilot study will evaluate structural, functional, and patient-reported outcomes in adults with small fiber neuropathy who receive Saluda Evoke ECAP-controlled spinal cord stimulation as part of routine clinical care. The study does not assign, direct, or modify spinal cord stimulation therapy. All decisions regarding patient selection, trial stimulation, permanent implantation, and device programming are made independently by the treating physician according to standard clinical practice.
The primary objective is to assess change in intra-epidermal nerve fiber density from baseline to 12 months. Secondary objectives include evaluation of quantitative sensory testing, pain intensity, patient-reported outcomes, and correlations between changes in nerve fiber density, sensory function, and neuropathic pain outcomes.
The study will enroll up to 10 adult participants with clinically diagnosed small fiber neuropathy and chronic neuropathic pain. Research assessments include patient-reported outcome measures, quantitative sensory testing, review of available clinical records, and a 12-month follow-up skin biopsy for intra-epidermal nerve fiber density.
This aligns with the approved protocol: observational, 10 adults, 12-month participant follow-up, primary IENFD endpoint, and secondary QST/pain/correlation endpoints.
Przegląd badań
Status
Warunki
Interwencja / Leczenie
Typ studiów
Zapisy (Szacowany)
Faza
- Nie dotyczy
Kontakty i lokalizacje
Lokalizacje studiów
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Nebraska
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Grand Island, Nebraska, Stany Zjednoczone, 68803
- Grand Island Pain Relief Center
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Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
- Dorosły
- Starszy dorosły
Akceptuje zdrowych ochotników
Opis
Inclusion Criteria:
- Age 19 years or older.
- Clinically diagnosed small fiber neuropathy based on abnormal intra-epidermal nerve fiber density (IENFD) skin biopsy.
- Chronic neuropathic pain with Numeric Pain Rating Scale score of at least 6.
- Candidate for ECAP-controlled spinal cord stimulation therapy based on the - - - Principal Investigator's medical judgment.
- Able and willing to undergo baseline and 12-month skin biopsies.
- Able to comply with 12-month quantitative sensory testing.
- Able to provide informed consent.
Exclusion Criteria:
- Confounding factors that may independently contribute to small fiber damage or alter nerve fiber density, including uncontrolled diabetes defined as HbA1c greater than 8.5% within the last 3 months, autoimmune disorders such as lupus, or history of alcohol abuse.
- Contraindications to spinal cord stimulation therapy, including active infection, coagulation disorders, allergy to medical device components, or other relevant surgical/device contraindications.
- Uncontrolled medical or psychiatric conditions.
- Pregnancy or planning to become pregnant during the study period.
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Leczenie
- Przydział: Nie dotyczy
- Model interwencyjny: Zadanie dla jednej grupy
- Maskowanie: Brak (otwarta etykieta)
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
|---|---|
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Inny: Saluda Evoke ECAP-Controlled Spinal Cord Stimulation System
Participants with clinically diagnosed small fiber neuropathy and chronic neuropathic pain who receive Saluda Evoke ECAP-controlled spinal cord stimulation as part of routine clinical care will be followed for 12 months.
The study does not assign, direct, or modify spinal cord stimulation therapy.
All treatment decisions, including trial stimulation, permanent implantation, and device programming, are made independently by the treating physician according to standard clinical practice.
Outcomes include intra-epidermal nerve fiber density, quantitative sensory testing, pain intensity, and patient-reported measures.
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Spinal cord stimulation using the Saluda Evoke system, an ECAP-controlled closed-loop SCS device that monitors neural response and adjusts stimulation in real time. Participants receive SCS therapy as part of routine clinical care. The study observes structural, sensory, pain, and patient-reported outcomes over 12 months and does not assign, direct, or modify device use, implantation, or programming. This matches the protocol's device description and keeps the intervention generic enough for ClinicalTrials.gov while still identifying the Saluda Evoke system.
Inne nazwy:
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Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Change in Intra-Epidermal Nerve Fiber Density From Baseline to 12 Months
Ramy czasowe: Baseline to 12 months
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Change in intra-epidermal nerve fiber density measured by skin biopsy from baseline to 12 months in participants with small fiber neuropathy receiving ECAP-controlled spinal cord stimulation as part of routine clinical care.
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Baseline to 12 months
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Miary wyników drugorzędnych
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Change in Thermal Detection Thresholds From Baseline to 12 Months
Ramy czasowe: Baseline to 12 months
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Change in heat and cold detection thresholds measured by quantitative sensory testing as a functional measure of small fiber integrity.
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Baseline to 12 months
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Change in Numeric Pain Rating Scale Score Over 12 Months
Ramy czasowe: Baseline, 1 week, 3 months, 6 months, and 12 months
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Change in pain intensity measured using the Numeric Pain Rating Scale.
The Numeric Pain Rating Scale is an 11-point scale from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable.
Higher scores indicate worse pain.
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Baseline, 1 week, 3 months, 6 months, and 12 months
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Patient Global Impression of Change Score Over 12 Months
Ramy czasowe: 1-week, 3 months, 6 months, and 12 months
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Participant-reported overall impression of change measured using the Patient Global Impression of Change scale.
The scale ranges from 1 to 7, where 1 indicates no change or worsening and 7 indicates a great deal better and a considerable improvement that has made all the difference.
Higher scores indicate greater improvement.
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1-week, 3 months, 6 months, and 12 months
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Correlation Between Change in IENFD and Change in Quantitative Sensory Testing Thresholds
Ramy czasowe: Baseline to 12 months
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Correlation between change in intra-epidermal nerve fiber density measured by skin biopsy and change in heat and cold detection thresholds measured by quantitative sensory testing from baseline to 12 months..
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Baseline to 12 months
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Correlation Between Change in IENFD and Change in Pain Intensity
Ramy czasowe: Baseline to 12 months
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Correlation between change in intra-epidermal nerve fiber density measured by skin biopsy and change in pain intensity measured using the Numeric Pain Rating Scale from baseline to 12 months.
The Numeric Pain Rating Scale is an 11-point scale from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable.
Higher scores indicate worse pain.
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Baseline to 12 months
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Współpracownicy i badacze
Sponsor
Współpracownicy
Śledczy
- Główny śledczy: Pravardhan Birthi, M.D., Tricity Research Center, LLC
- Dyrektor Studium: Mahesh Pattabiraman, Ph.D., TriCity Research Center
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Zakończenie podstawowe (Szacowany)
Ukończenie studiów (Szacowany)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
- SAL 002
Plan dla danych uczestnika indywidualnego (IPD)
Planujesz udostępniać dane poszczególnych uczestników (IPD)?
Opis planu IPD
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
produkt wyprodukowany i wyeksportowany z USA
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