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NCT Number: NCT04901195

A Study to Test the Long-term Treatment of Bimekizumab in Study Participants With Moderate to Severe Hidradenitis Suppurativa

The purpose of the study is to evaluate the safety of long-term therapy of bimekizumab in study participants with moderate to severe hidradenitis suppurativa (HS)

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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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 and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Hs0005 30015, Campbelltown, Australia

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Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Study participant has completed the Maintenance Treatment Period through Week 48 in HS0003 (NCT04242446) or HS0004 (NCT04242498), was eligible to receive bimekizumab at the time of completing the feeder study, and did not meet any withdrawal criteria of the feeder study
  • Study participant is considered reliable and capable of adhering to the protocol (eg, able to understand and complete questionnaires), visit schedule, and medication intake according to the judgement of the Investigator
  • A female study participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies:
  • Not a woman of childbearing potential (WOCBP) OR
  • A WOCBP who agrees to follow the contraceptive guidance during the open-label extension period and for at least 20 weeks after the final dose of investigational medicinal product (IMP)

Exclusion criteria

  • Female study participant who is breastfeeding, pregnant, or plans to become pregnant during the study or within 20 weeks following the final dose of investigational medicinal product (IMP)
  • Study participant has any medical or psychiatric condition that, in the opinion of the Investigator, could jeopardize or would compromise the participant's ability to participate in this study as determined by the Investigator based on protocol required assessments Note: For any study participant with an ongoing serious adverse event (SAE) from HS0003 (NCT04242446) or HS0004 (NCT04242498), or any current sign or symptom that may indicate a medically significant active infection (except for the common cold) or has had an infection requiring systemic antibiotics within 2 weeks of study entry or a history of serious infections in HS0003 or HS0004, the Medical Monitor must be consulted prior to the study participant's entry into HS0005, although the decision on whether to enroll the participant remains with the Investigator.
  • Study participant has a positive or indeterminate interferon-gamma release assay (IGRA) in a feeder study, unless appropriately evaluated and treated
  • Study participant has ongoing or planned use of prohibited hidradenitis suppurativa (HS) or non-HS treatment
  • Study participant plans to participate in another study of a medicinal product or device under investigation during this study

Treatment and study plan

Bimekizumab

Drug

Subjects will receive bimekizumab at pre-specified time-points.

Other names: UCB4940

Primary outcomes

  1. Percentage of participants with treatment-emergent adverse events (TEAEs) during the study

    Time frame: From Baseline (Day 1) until end of Safety Follow-Up (up to Week 196)

    An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of investigational medicinal product (IMP), whether or not considered related to the IMP. NOTE: An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of IMP.

Secondary outcomes

  1. Percentage of participants with treatment-emergent serious adverse events (SAEs) during the study

    Time frame: From Baseline (Day 1) until end of Safety Follow-Up (up to Week 196)

    A serious adverse event (SAE) is defined as any untoward medical occurrence that, at any dose:

    • Results in death
    • Is life-threatening
    • Requires inpatient hospitalization or prolongation of existing hospitalization
    • Results in persistent disability/incapacity
    • Is a congenital anomaly/birth defect
    • Important medical events

  2. Percentage of participants with treatment-emergent adverse events (TEAEs) leading to withdrawal from the study

    Time frame: From Baseline (Day 1) until end of Safety Follow-Up (up to Week 196)

    An adverse event (AE) is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of investigational medicinal product (IMP), whether or not considered related to the IMP. NOTE: An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of IMP. TEAEs leading to discontinuation of the study are reported.

  3. Percentage of participants achieving clinical response as measured by Hidradenitis Suppurativa Clinical Response 50 (HiSCR50)

    Time frame: Week 0, Week 16, Week 32, Week 48, Week 76, Week 92, Week 100, Week 116, Week 132, Week 148, Week 164, and Week 180

    HiSCR50 is defined as at least a 50 % reduction from Baseline in the total abscess and inflammatory nodule (AN) count, with no increase from Baseline in abscess or draining tunnel count.

    Results will be presented individually per week listed under time points.

  4. Percentage of participants achieving clinical response as measured by Hidradenitis Suppurativa Clinical Response 75 (HiSCR75)

    Time frame: Week 0, Week 16, Week 32, Week 48, Week 76, Week 92, Week 100, Week 116, Week 132, Week 148, Week 164, and Week 180

    HiSCR75 is defined as at least a 75 % reduction from Baseline in the total abscess and inflammatory nodule (AN) count, with no increase from Baseline in abscess or draining tunnel count.

    Results will be presented individually per week listed under time points.

  5. Percentage of participants with Flare

    Time frame: Week 0, Week 16, Week 32, Week 48, Week 76, Week 92, Week 100, Week 116, Week 132, Week 148, Week 164, and Week 180

    Flare is defined as a ≥25 % increase in abscess and inflammatory nodule (AN) count with an absolute increase in AN count of ≥2 relative to Baseline.

    Results will be presented individually per week listed under time points.

  6. Hidradenitis Suppurativa Symptom Questionnaire (HSSQ) Response for Worst Pain

    Time frame: Week 0, Week 16, Week 32, Week 48, Week 76, Week 92, Week 100, Week 116, Week 132, Week 148, Week 164, and Week 180

    The 4 items on the HSSQ assess the study participant's perception of the core symptoms of HS experienced in the past 7 days - pain, smell or odor, drainage or oozing from HS lesions, and itch on an 11-point numeric rating scale with higher scores indicating higher symptom level.

    Results will be presented individually per week listed under time points.

  7. Absolute change from Baseline in Dermatology Life Quality Index (DLQI) Total Score

    Time frame: Week 0, Week 16, Week 32, Week 48, Week 76, Week 92, Week 100, Week 116, Week 132, Week 148, Week 164, and Week 180

    The DLQI is a skin disease specific questionnaire aimed at the evaluation of how the disease affects participants health related quality of life (QOL). The DLQI total score ranges from 0 to 30 with higher scores indicating higher skin disease impact on QOL.

    Results will be presented individually per week listed under time points.

Sponsors and collaborators

Lead sponsor

UCB Biopharma SRL

Industry

Registry information

Official study title

A Phase 3, Open-Label, Parallel Group, Multicenter, Extension Study Evaluating the Long-Term Treatment of Bimekizumab in Study Participants With Moderate to Severe Hidradenitis Suppurativa

Acronym: BE HEARD EXT

Important dates

Study start
2021
Primary completion
2026
Study completion
2026
First posted
May 25, 2021
Registry last updated
Jul 31, 2026

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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