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NCT Number: NCT05927948

Evaluating the Safety and Efficacy of Laight®-Therapy Treatment in Subjects With Hidradenitis Suppurativa

Hidradenitis suppurativa (HS) is a debilitating and chronic condition characterized by recurrent episodes of inflammation associated with the formation of abscesses, inflammatory nodules, pain, and drainage ultimately culminating in the formation of scarring in moderate to severe disease. HS affects more women than men in a ratio of approximately 3:1, and onset of the disease is typically after puberty. The axillae, breasts, groin, buttocks, and lower abdomen are common intertriginous regions which are affected by HS, and significant impacts on quality of life are reported in the literature.

The Hurley Staging system is commonly utilized to classify the severity of a patient's hidradenitis suppurativa. Stage 1 disease consists of one or more abscesses with no sinus tract formation or scarring. Stage 2 disease involves one or more widely separated recurrent abscesses, with formation of a sinus tract and/or scarring. Stage 3 involves multiple interconnected sinus tracts and/or abscesses throughout an anatomical area.

Histologic studies of HS suggest that follicular hyperkeratosis and obstruction is the primary event in the pathogenesis. Subsequently, there is rupture of the follicular infundibulum and a resulting inflammatory cascade. Despite recurrent episodes of purulent drainage, bacteria do not appear to play a primary role in the pathogenesis.

The traditional repertoire of treatment options for HS can be divided into medical and surgical options, however there is currently no cure for HS and treatments focus on symptomatic control. Medical treatments including topical and systemic antibiotics, hormonal agents, and biologic medications can successfully control symptoms however discontinuation of many of these is associated with relapses in disease symptoms. Conversely, surgical interventions such as traditional surgical excision performed in an operating room, or carbon dioxide laser excision performed under local anesthetic in an outpatient setting can induce long term symptom control however may not be appropriate for all patients considering the risk of general anesthesia, high cost of inpatient hospitalizations, and cumbersome healing process for procedures which heal by secondary intention. Despite numerous treatment options for HS, efficacious and non-invasive treatment options which result in long term remission of disease are needed to meet the needs of HS patients.

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Key information

Conditions

Hidradenitis Suppurativa Bacterial Infections Bacterial Infections and Mycoses Hidradenitis Infections Skin Diseases Skin Diseases, Bacterial Skin Diseases, Infectious Skin and Connective Tissue Diseases Suppuration Sweat Gland Diseases

Age range

18 year–100 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Henry Ford Hospital Systems- New Center One

Detroit, Michigan, 48202, United States

About this study

Subjects receive treatment every 2 weeks for a total of 22 weeks, 10 treatments. Subject treatment side will be randomized via computer generated assignments.

Ultrasound imaging will be utilized to assess abscesses, nodules, and sinus tracts at investigator discretion. Patient-reported outcome measures include DLQI and Pain VAS. Physician-reported outcome measures include: HS-PGA, IHS4, Hurley Staging, and HiSCR.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Be at least 18 years old.
  • Have a diagnosis of Hurley stage I or II HS.
  • Patients must have bilateral HS in the axilla, groin, or breast.
  • Hurley stage 1 or 2 disease in either the axillae, groin, or inframammary locations.
  • At least 2 clinically observable lesions in the axilla, groin or breast.
  • Be able to understand the requirements of the study, the risks involved, and be able to sign the informed consent form.
  • Agree to follow and undergo all study-related procedures.

Exclusion criteria

  • No diagnosis of HS in the axillae or groin.
  • Tattoos located on proposed treatment locations.
  • Metal implants of intended treatment areas.
  • History of acne conglobata.
  • Concomitant use of antibiotics in the tetracycline class or oral or topical retinoids (permitted with 14-day washout period).
  • Concomitant use of biologic medications (6-month washout period).
  • Concomitant use of other topical treatments of HS in intended treatment locations (14-day washout period), except for topical benzoyl peroxide or topical clindamycin gel or lotion.
  • History of melanoma.
  • Active skin cancer in the proposed treatment area (non-melanoma in the past 6 month).
  • Current Nd:YAG laser hair removal for HS treatment in the study area.

Treatment and study plan

Laight therapy, NICE V3.1 device

Device

Laight therapy is a non-invasive method of treatment for HS and acne developed in Germany which utilizes a combination of radiofrequency and intense pulsed light exposure. Three passes of the device, all coupled with radiofrequency, are used in the proposed treatment area. The first pass encompasses wavelengths between 420 nm and 1200 nm, the second between 510 nm and 1200 nm, and the third pass between 690 nm and 1200 nm.

Primary outcomes

  1. Hurley Stage

    Time frame: 22 weeks

    Classification of HS severity Participant treatment location will be assessed using the Hurley Staging scale Stage I (Mild) Inflammatory nodule or abscess formation, single or multiple, without sinus tracts and scarring Stage II (Moderate) Recurrent abscesses and nodules with sinus tract formation or scarring: single or multiple widely separated lesions Stage III (Severe) Diffuse or near-diffuse involvement with multiple interconnected sinus tracts, scarring, and abscesses across entire area

Secondary outcomes

  1. Hidradenitis Suppurativa Clinical Response Score

    Time frame: baseline and end of treatment (22 weeks)

    Severity and activity of hidradenitis suppurativa assessment with a target of reaching a 50% reduction in the AN (abscess nodule) count

    HiSCR:

    • Abscesses: fluctuant, with or without drainage, tender or painful
    • Inflammatory nodules: tender, erythematous, pyogenic granuloma lesion
    • Draining fistulas: sinus tracts, with communications to skin surface, draining purulent fluid
    • Definition
    • AN (abcess nodule) Count= Abscess and inflammatory nodule count
    • At least a 50% reduction in AN count
    • No increase in the number of abscesses
    • No increase in the number of draining fistulas from baseline

  2. Dermatology Life Quality Index

    Time frame: baseline and end of treatment (22 weeks)

    patient reported outcome measure of quality of life assessment

    DLQI Scoring SCORING

    The scoring of each question is as follows:

    Very much, scored 3 A lot scored, 2 A little scored, 1 Not at all scored, 0 Not relevant scored, 0 Question 7, 'prevented work or studying', scored 3 The DLQI is calculated by summing the score of each question resulting in a maximum of 30 and a minimum of 0. The higher the score, the more quality of life is impaired.

    DLQI SCORE INTERPRETATION 0 - 1 no effect at all on patient's life 2 - 5 small effect on patient's life 6 - 10 moderate effect on patient's life 11 - 20 very large effect on patient's life 21 - 30 extremely large effect on patient's life

  3. Hidradenitis suppurativa physician global assessment

    Time frame: baseline and end of treatment (22 weeks)

    physician global assessment of HS severity

    HS PGA Clear 0 abscesses, 0 draining fistulas, 0 inflammatory nodules, and 0 noninflammatory nodules

    Minimal 0 abscesses, 0 draining fistulas, 0 inflammatory nodules, and presence of noninflammatory nodules

    Mild 0 abscesses, 0 draining fistulas, 1-4 inflammatory nodules Or 1 abscess or draining fistula and inflammatory nodules

    Moderate 0 abscesses, 0 draining fistulas, and ≥ 5 inflammatory nodules Or 1 abscess or draining fistula and ≥ 1 inflammatory nodule Or 2-5 abscesses or draining fistulas and < 10 inflammatory nodules

    Severe 2-5 abscesses or draining fistulas and ≥ 10 inflammatory nodules Very Severe >5 abscesses or draining fistulas

  4. International HS Severity Scoring

    Time frame: baseline and end of treatment (22 weeks)

    severity scoring

    IHS4 (points)= Number of nodules x 1 + Number of abscesses x 2 + Number of draining tunnels (fistulae/sinuses) x 4

    A total score of 3 or less signifies mild, 4-10 signifies moderate and 11 or higher signifies severe disease.

  5. Pain Visual Analog Scale

    Time frame: 22 weeks

    Scale of 1-10, 1 being the least amount of pain, 10 being the most amount of pain

Sponsors and collaborators

Lead sponsor

Henry Ford Health System

Other

Registry information

Important dates

Study start
2019
Primary completion
2020
Study completion
2021
First posted
Jul 3, 2023
Registry last updated
Oct 9, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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