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Early Pathophysiology of Hidradenitis Suppurativa and Prediction of the Risk of Progression: a Prospective Cohort (Early-HS)

2. november 2026 opdateret af: Assistance Publique - Hôpitaux de Paris

Physiopathologie précoce de l'hidradénite suppurée et prédiction du Risque de Progression : Cohorte Prospective

Hidradenitis suppurativa (HS) is a chronic inflammatory disease affecting approximately 1% of the population. Most pathophysiological studies have focused on advanced forms (Hurley II-III), which obscures the initial mechanisms. The mean diagnostic delay of 7 to 10 years and the lack of prognostic biomarkers limit early management. Identifying molecular and microbiological alterations as early as Hurley stage I could allow stratification of the risk of progression and support early intervention strategies.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

200

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

12 år og ældre (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

HS patients:

  • Age ≥ 12 years
  • Consultation for a recurrent abscess or nodule in an HS area (axillary, inframammary, abdominal, inguinal, perineal, intergluteal and intermammary regions)
  • At least one inflammatory lesional area accessible to biopsy outside skin folds and the face. A fold is defined as the area within 1 cm of the crease.
  • First episode within the past 12 months
  • Free, informed, written and signed consent (adult patient, or holders of parental authority + assent of the minor)
  • Affiliation to a social security scheme

Controls:

  • Healthy control enrolled in the ImmuneSkinBank research protocol coordinated by the same investigating team (IDRC 2024-A00202-45, APHP240183, favourable opinion from CPP Sud-Méditerranée II), who agreed to the reuse of their data and samples for future research.
  • Matched to an HS patient on age (by age group) and sex
  • Informed about the study by an information notice sent by post

Exclusion Criteria:

HS patients:

  • Buttock involvement

  • HS-related sinus tracts (Hurley II or III)

  • Treatment that may interfere with the course of HS:

    • Long-term antibiotic therapy received within the past month
    • Immunosuppressive/immunomodulatory treatment within the past 3 months
  • Person under guardianship or curatorship, under judicial protection, or deprived of liberty by judicial or administrative decision

  • Patients covered by State Medical Aid (AME)

  • Pregnant or breastfeeding women

Controls:

Objection to the research

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: Patients with HS

Adolescent (≥ 12 years) and adult patients with Hurley stage I HS, presenting with a recurrent nodule or abscess (≥ 2 episodes within 12 months) in characteristic locations.

  • Blood sampling
  • Skin biopsy
  • Tape stripping and swabs:
  • Stool self-sampling
  • Quarterly self-administered questionnaires
  • Dedicated protocol visits
Andet: Controls

Healthy subjects matched 1:1 on age (by age group) and sex, recruited among plastic surgery patients with residual skin tissue (e.g. abdominoplasty, breast reduction) enrolled in the ImmuneSkinBank protocol coordinated by the same investigating team (IDRC 2024-A00202-45, NCT06599411, APHP240183).

e.g. abdominoplasty, breast reduction

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Identification of a combined molecular and microbiological signature associated with Hurley stage I hidradenitis suppurativa
Tidsramme: At inclusion
  • Differentially expressed genes and proteins
  • Enriched biological pathways involved in keratinisation, pilosebaceous unit biology, and innate and adaptive immunity
  • Skin and gut microbiota profiles (alpha/beta diversity, relative abundance of taxa of interest)
At inclusion

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Progression-free survival to Hurley stage II-III
Tidsramme: Up to 96 months

Time from HS diagnosis to the date of progression to Hurley stage II-III

Up to 96 months
Incidence rate of progression to Hurley stage II-III
Tidsramme: Up to 96 months

expressed per 100 person-years of follow-up

Up to 96 months
Number of newly involved anatomical regions during follow-up
Tidsramme: Up to 96 months

Analysis of topographic extension

Up to 96 months
Proportion of patients in need for major surgery (wide excision, extensive deroofing) and survival free of major surgery
Tidsramme: Up to 96 months

time from HS diagnosis to the first surgical procedure

Up to 96 months
Change in IHS4 during follow-up
Tidsramme: Up to 96 months

absolute and relative change from inclusion at each annual visit

Up to 96 months
Change in HS-PGA during follow-up
Tidsramme: Up to 96 months

absolute and relative change from inclusion at each annual visit

Up to 96 months
Rate of inflammatory flares per year of follow-up
Tidsramme: Up to 96 months
Up to 96 months
Patient-reported score - Dermatology Life Quality Index
Tidsramme: Up to 96 months

The Dermatology Life Quality Index (DLQI) total score ranges from 0 to 30, with higher scores indicating a greater negative impact of the skin disease on quality of life (0-1: no effect; 2-5: small effect; 6-10: moderate effect; 11-20: very large effect; 21-30: extremely large effect).

The Children's Dermatology Life Quality Index (CDLQI) total score ranges from 0 to 30, with higher scores indicating a greater negative impact of the skin disease on the child's quality of life.

Up to 96 months
Patient-reported score - HiSQOL
Tidsramme: Up to 96 months

The Hidradenitis Suppurativa Quality of Life (HiSQOL) total score ranges from 0 to 68, with higher scores indicating a greater impact of hidradenitis suppurativa on quality of life. Les seuils publiés récemment sont : 0-4 none, 5-14 mild, 15-21 moderate, 22-23 severe, ≥24 very severe.

Up to 96 months
Patient-reported score - VAS
Tidsramme: Up to 96 months

Pain intensity is assessed using a Visual Analogue Scale (VAS) ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain.

Up to 96 months
Patient-reported score - HADS/ADRS
Tidsramme: Up to 96 months

The Hospital Anxiety and Depression Scale (HADS) comprises two subscales, HADS-A for anxiety and HADS-D for depression, each ranging from 0 to 21. For each subscale, higher scores indicate greater symptom burden; scores of 0-7 indicate no significant symptoms, 8-10 borderline/doubtful symptoms, and 11-21 probable/significant symptoms.

The Adolescent Depression Rating Scale (ADRS) self-report score ranges from 0 to 10, with higher scores indicating a higher risk of depressive symptoms.

Up to 96 months
Patient-reported score - AUDIT-C
Tidsramme: Up to 96 months

The Alcohol Use Disorders Identification Test-Consumption (AUDIT-C) score ranges from 0 to 12, with higher scores indicating greater levels of potentially hazardous alcohol consumption.

Up to 96 months
Patient-reported score - IPAQ - Short Form
Tidsramme: Up to 96 months

Physical activity is assessed using the International Physical Activity Questionnaire (IPAQ) and expressed in MET-minutes/week; higher values indicate greater physical activity. Physical activity may also be classified as low, moderate or high.

Up to 96 months
Patient-reported score - EPICES
Tidsramme: Up to 96 months

Socioeconomic deprivation is assessed using the EPICES score, with higher scores indicating greater socioeconomic deprivation; a score ≥30.17 is commonly used to identify socioeconomic deprivation.

Up to 96 months
Patient-reported score - Short FFQ
Tidsramme: Up to 96 months

Food Frequency Questionnaires

Up to 96 months
Incidence rate of inflammatory and metabolic comorbidities during follow-up
Tidsramme: Up to 96 months
Up to 96 months
Molecular and microbiological signatures differentially expressed over time within the same HS patient
Tidsramme: Up to 96 months
Up to 96 months
Keratinocyte marker gene expression in skin biopsy and tape stripping
Tidsramme: At inclusion
At inclusion

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Datoer for undersøgelser

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Studer store datoer

Studiestart (Anslået)

1. november 2026

Primær færdiggørelse (Anslået)

1. november 2029

Studieafslutning (Anslået)

1. november 2034

Datoer for studieregistrering

Først indsendt

9. oktober 2026

Først indsendt, der opfyldte QC-kriterier

2. november 2026

Først opslået (Faktiske)

6. november 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

6. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • APHP260139

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