A Study to Investigate Efficacy and Safety With SAR445399 in Adult Participants With Moderate to Severe Hidradenitis Suppurativa

Study on Efficacy and Safety of Investigational Treatment for Moderate to Severe Hidradenitis Suppurativa

Recruiting
18 years or above
All
Phase 2
144 participants needed
2 Locations

Study Overview

This is a multinational, randomized, double-blind, placebo-controlled, Phase 2, dose finding study to evaluate the efficacy and safety of different doses of SAR445399 in adult participants with moderate to severe hidradenitis suppurativa.

The purpose of this study is to assess the efficacy and safety of two doses of SAR445399 compared with placebo in adult participants with moderate to severe hidradenitis suppurativa.

The study duration (per participant) will be up to 30 weeks with a total of 12 visits. The treatment duration will be 16 weeks.

Eligibility Criteria

You may be eligible for this study if you meet the following criteria:

  • Conditions: Hidradenitis Suppurativa
  • Age: 18 years or above
  • Gender: All

Inclusion Criteria:

Participants are eligible to be included in the study only if all of the following criteria apply:

  • Participants with a history of signs and symptoms consistent with hidradenitis suppurativa (HS) for at least 6 months prior to Baseline
  • Participants must have HS lesions present in at least 2 distinct anatomic areas (eg, left, and right axilla; or left axilla and left inguino-crural fold), with at least 1 body site being Hurley Stage II or III.
  • Participant must have a total abscess and inflammatory nodule (AN) count of ≥5 at the Baseline Visit.
  • Participant must have had an inadequate response to a trial of an oral antibiotic for treatment of HS, exhibited recurrence after discontinuation of antibiotics or demonstrated intolerance to antibiotics or has a contraindication to oral antibiotics for treatment of their HS as assessed by the Investigator through participant interview and review of medical history.
  • Participants in the biologic-naïve stratum must be naïve to any prior use of biologic therapy with a potential impact on HS; Participants in the biologic-experienced stratum must have documented history of use of at least one dose of biologic therapy for HS.

Exclusion Criteria:

Participants are excluded from the study if any of the following criteria apply:

  • Any other active skin disease or condition (eg, bacterial, fungal, or viral infection) that may interfere with assessment of HS.
  • History of recurrent or recent serious infection
  • Known history of or suspected current immunosuppression
  • History of solid organ transplant or stem cell transplant.
  • History of splenectomy
  • History of malignancy or lymphoproliferative disease other than adequately treated or nonmetastatic squamous cell carcinoma of the skin that was excised and completely cured or nonmetastatic basal cell carcinoma of the skin that was excised and completely cured.
  • Any other medical condition or severe, concomitant illness, including psychiatric illness and substance abuse, that may present an unreasonable risk to the study participants, make participants unreliable or may interfere with study assessments

The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

This study investigates moderate to severe hidradenitis suppurativa. The purpose of the study is to evaluate the effectiveness and safety of an investigational treatment in adults with this condition.

The study focuses on assessing how well the investigational treatment works and its safety compared to a placebo. The aim is to better understand the treatment's impact on hidradenitis suppurativa.

  • Who can participate: Adults with moderate to severe hidradenitis suppurativa who have had the condition for at least 6 months and meet specific criteria, including having lesions in at least 2 body areas, may be eligible. Participants should have had an inadequate response to antibiotics or be biologic-naïve or experienced.
  • Study details: Participants will receive either the investigational treatment or a placebo, which looks like the investigational treatment but contains no medicine. The study aims to observe the effects of the treatment on the condition.
  • Study timelines and visits: The study will last up to 30 weeks. The study requires 12 visits.
Updated on 27 Mar 2026. Study ID: NCT07225569

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