Evaluation of the Prevalence, and Immunological Characteristics of Small Fiber Neuropathy in Patients With Primary Sjögren's Syndrome (NEUROSS)

October 29, 2026 updated by: Centre Hospitalier Universitaire, Amiens

The investigators propose to conduct a prospective study evaluating the prevalence of SNN in pSS patients and to find clinical characteristics and specific immunological profiles in pSS patients with SFN. Peripheral nervous system involvement account for 15% of pSS cases. Among peripheral nervous system complication, SFN appears to be prevalent. However the association between pSS and SFN has been scarcely evaluated. There are not many relevant studies using similar methodology to evaluate pSS patients for small fiber dysfunction. Furthermore, autoimmune mechanisms are thought to play a key role in SFN pathogenesis in pSS and the association between SFN and specific immunological profiles has been poorly studied. So the aim of this study is to evaluate the prevalence of SFN in pSS patients by using the Sudoscan which is a fast and non- invasive tool. The Sudoscan could offer an accessible alternative for early SFN detection, improving patient management. The secondary purpose is to analyze systemic and immunological profiles, as well as disease's activity and quality of life of patients with pSS-related SFN.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

100

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age ≥ 18 years
  • Primary Sjögren's syndrome confirmed according to ACR/EULAR criteria 2016
  • Body Mass Index between 18 and 35 kg/m²

Exclusion Criteria:

  • Secondary or unconfirmed Sjögren's syndrome,
  • Age < 18 years, Use of medications that could interfere with Sudoscan results and which could not be discontinued before inclusion,
  • Other conditions that may cause small fiber neuropathy,
  • type 2 diabetes,
  • excessive alcohol consumption,
  • sarcoidosis
  • obesity

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
prevalence of SFN in patients with pSS
Time Frame: 18 months

To assess the prevalence of SFN in patients with pSS
18 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
time of onset of peripheral neuropathies
Time Frame: 1 day
1 day
correlation of clinical features correlation with neuropathy severity
Time Frame: 18 months

correlation of clinical features correlation with neuropathy severity
18 months
correlation of immunological profile with neuropathy severity
Time Frame: 18 months

correlation of immunological profile with neuropathy severity
18 months
correlation of disease's activity with the quality of life
Time Frame: 18 months

correlation of disease's activity with the quality of life
18 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Centre Hospitalier Universitaire, Amiens

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 31, 2026

Primary Completion (Estimated)

September 1, 2027

Study Completion (Estimated)

September 1, 2027

Study Registration Dates

First Submitted

October 29, 2026

First Submitted That Met QC Criteria

October 29, 2026

First Posted (Actual)

November 4, 2026

Study Record Updates

Last Update Posted (Actual)

November 4, 2026

Last Update Submitted That Met QC Criteria

October 29, 2026

Last Verified

October 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PI2025_843_0185

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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