Staphylococcal Toxins in Atopic Dermatitis and Eczema Herpeticum (STADEH)

December 22, 2025 updated by: Poitiers University Hospital

Role of Staphylococci on Cytokine and T Cell Profiles in the Pathogenesis of Atopic Dermatitis and Eczema Herpeticum

Atopic dermatitis (AD) is the most common chronic inflammatory skin disease. Clinical studies have demonstrated a link between staphylococcal skin colonization and the pathogenesis of AD, but the implication of bacterial virulence factors remains largely uncharacterized. Finally, AD is often associated with herpes simplex skin infections. The aim of this project is to investigate the role of staphylococcal toxins in the exacerbation and maintenance of atopic skin inflammation and in the occurrence of infectious complications such as eczema herpeticum.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

41

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 Locations

  • France
      • Bordeaux, France
        • CHU de Bordeaux
      • Poitiers, France
        • CHU de Poitiers

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

Description

Inclusion Criteria:

  • Patients with moderate AD (SCORAD between 25 and 50) or severe AD (SCORAD> 50)
  • Skin lesions in the forearms
  • Free subject, without neither guardianship, wardship nor subordination
  • Patient with Social Security
  • Informed and signed consent by the patient after clear and loyal information on the study

Exclusion Criteria:

  • Age < 18 year-old
  • Patients with mild AD (SCORAD < 25)
  • Patients without skin lesions in the forearms
  • Patients treated with dermocorticoid or calcineurin inhibitor for less than two weeks
  • Patients under systemic treatment : Methotrexate, Ciclosporin, Mycophenolate Mofetil, Azathioprine, general corticosteroids for less than 4 weeks
  • Patients under biological treatment : Dupilumab for less than 5 half-lives
  • Patient without Social Security
  • Pregnant and nursing women

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: Basic Science
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Skin biopsies and blood samples
Other: Skin biopsies and blood samples
Two skin biopsies and 30 ml of blood will be collected.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Quantification of S. aureus colonization level and characterization of bacterial virulence profile in AD lesions.
Time Frame: 2 hours (with consultation and sample)
Biological data obtained from lesional skin will be compared with those of healthy skin.
2 hours (with consultation and sample)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Determination of the inflammatory profile of skin and blood during AD. Definition of the seric cytokine signature characteristic of AD. Characterization of the phenotype and function of the lymphocytic infiltrate T during AD.
Time Frame: 2 hours (with consultation and sample)
Biological data obtained from lesional skin will be compared with those of healthy skin.
2 hours (with consultation and sample)

Collaborators and Investigators

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

Sponsor

Poitiers University Hospital

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)

October 15, 2020

Primary Completion (Actual)

August 4, 2025

Study Completion (Actual)

August 4, 2025

Study Registration Dates

First Submitted

February 14, 2020

First Submitted That Met QC Criteria

February 14, 2020

First Posted (Actual)

February 18, 2020

Study Record Updates

Last Update Posted (Actual)

December 29, 2025

Last Update Submitted That Met QC Criteria

December 22, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2019-A01904-53

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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