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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT05531747
Other study ID # APHP211351
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date September 30, 2022
Est. completion date March 30, 2024

Study information

Verified date June 2022
Source Assistance Publique - Hôpitaux de Paris
Contact Claire HOTZ, MD
Phone 33-1-49-81-37-96
Email claire.hotz@aphp.fr
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Hidradenitis Suppurativa is a recurrent chronic inflammatory follicular occlusive disease affecting hair follicles. HS is notoriously difficult and challenging to treat with a high morbidity impact and could be classified as an unmet medical need with no efficient therapeutic options. Objective: Investigators previously showed that Outer Root Sheath Cells (ORS) isolated from hair follicle of HS patients (HS-ORS) have a pro-inflammatory phenotype and secrete spontaneously IP-10 and RANTES. To identify the mechanisms involved in the pro-inflammatory phenotype of HS-ORS, investigators performed a transcriptomic analysis in healthy and HS patients. This revealed: (i) an IFN signature, (i) a dysregulation of genes involved in cell proliferation and differentiation, and (iii) an upregulation of DNA damage response and cell cycle G2/M checkpoint pathways in HS-ORS. These findings support the notion that, in HS patients, a perturbation of HF-SC homeostasis leading to an increased proliferation induces a replicative stress and an accumulation of cytoplasmic ssDNA, stimulating IFN synthesis through IFI16-STING pathway. Interestingly, replicative stress in ORS were present in some but not all patients with Hidradenitis Suppurativa. The goal of study is to determine replicative stress in ORS in a large cohort of HS patients. Method Patients will be enrolled in the Mondor Dermatology department, during routine care. A dermatologist will check all inclusion and exclusion criteria with the technical support of a research technician of the Henri Mondor Clinical Investigation Center. Medical history, clinical data, comorbidities and concomitant therapies will be prospectively recorded in a dedicated case report form. Skin biopsies will be performed in perilesional zone rich in hair follicles. mRNA will be extracted from freshly isolated hair follicle cells and some slides will be prepared and stored at -80°C to perform immunohistochemistry analysis on freshly isolated hair follicle cells. PBMC and serum will be collected. All these biological samples will allow us to quantify the replicative stress in HS-ORS of each patient, and to quantify several cytokine of interest : IFN de type 1, IL-17, IL-6, TNF-α, IL-10 This study will allow investigators to evaluate the rate of patients with replicative stress in hair follicle stem cells in Hidradenitis Suppurativa. The investigator will also determine whether HF-SC replication stress correlates with clinical characteristics and/or with clinical course and/or comorbidities.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 200
Est. completion date March 30, 2024
Est. primary completion date March 30, 2024
Accepts healthy volunteers No
Gender All
Age group 18 Years to 99 Years
Eligibility Inclusion Criteria: - Patients referred to the consultation of dermatology of Henri Mondor Hospital - Diagnosis of Hidradenitis Suppurativa - Age> 18 y.o. - Affiliation to a social security system Exclusion Criteria: - Patient under tutorship or curatorship - Breastfeeding or pregnant women - Refusal to sign the consent letter - Patients benefiting from State Medical Aid

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Skin biopsy
A maximum of 2 superficial skin biopsies (epidermis/dermis), allowing 10 hair follicles to be obtained, at the edge of the affected area, in healthy territory (excluding the face and folds but not excluding the pubic region), at initiation visit.
Blood sample
42mL of blood (6 tubes of 7mL) sampled at initiation visit

Locations

Country Name City State
France Assistance Publique Hôpitaux de Paris - CHU Henri Mondor Créteil Val-de-marne

Sponsors (1)

Lead Sponsor Collaborator
Assistance Publique - Hôpitaux de Paris

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary Replicative stress in hair follicle stem cells in Hidradenitis Suppurativa Evaluation of the rate of patients with replicative stress in hair follicle stem cells in Hidradenitis Suppurativa The primary outcome will be evaluated at baseline
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