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Active, Not Recruiting

NCT Number: NCT06921850

A Study to Assess the Pharmacokinetics and Safety of Bimekizumab in Children and Adolescents With Moderate to Severe Hidradenitis Suppurativa

The purpose of the study is to assess the PK of bimekizumab following subcutaneous (sc) administration 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

9 year–17 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Hs0006 40326, Berlin, Germany

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Study participant must be 12 to <18 years of age at the time of informed consent/assent, at Tanner stage 2 or more, for the first 8 participants only, followed by also including participants ≥9 to <18 years of age at Tanner stage 2 or more.
  • Study participant must have a diagnosis of HS for at least 6 months prior to the Baseline Visit.
  • Study participant must have moderate to severe HS, defined as a total of ≥5 inflammatory lesions (ie, the sum of abscesses and inflammatory nodules), as assessed at both the Screening and Baseline Visits.
  • Study participant must have HS lesions present in at least 2 distinct anatomic areas, 1 of which must be at least Hurley Stage II or III, as assessed at both the Screening and Baseline Visits.
  • Study participant must have had a history of inadequate response to a course of a systemic antibiotic for treatment of HS
  • Study participant must weigh ≥30kg at the Screening Visit.

Exclusion criteria

  • Study participant has a draining tunnel count of >20 at either the Screening or Baseline Visits.
  • Study participant has experienced primary failure (no response within 12 weeks) to 1 or more IL 17 biologic response modifiers (eg, brodalumab, ixekizumab, secukinumab) OR primary failure to more than 1 biologic response modifier other than an IL-17 biologic response modifier.
  • Study participant has previously participated in this study or has received previous therapy with bimekizumab.
  • Study participant has a history of IBD or symptoms suggestive of IBD.
  • History of active tuberculosis unless successfully treated, latent TB unless prophylactically treated
  • Study participant has an active infection or history of infections (such as serious infection, chronic infections, opportunistic infections, unusually severe infections)
  • Study participant has received drugs outside the specified timeframes relative to the Baseline Visit or receives prohibited concomitant treatments
  • Study participant has the presence of active suicidal ideation, or positive suicide behavior,
  • Study participant diagnosed with severe depression in the past 6 months prior to the Screening Visit.
  • Study participant has a history of psychiatric inpatient hospitalization within the past year before enrolling into the study.

Treatment and study plan

Bimekizumab

Drug

Bimekizumab will be administered at pre-specified timepoints.

Primary outcomes

  1. Geometric Mean Plasma bimekizumab concentrations at Week 16

    Time frame: At Week 16

    Plasma samples will be collected prior to dosing for measurement of plasma concentrations of bimekizumab at the specified timepoint.

Secondary outcomes

  1. Exposure-adjusted incidence rate of Treatment- Emergent Adverse Events (TEAEs) during the Initial Treatment Period

    Time frame: From Baseline until end of the Initial Treatment Period (up to 16 weeks)

    The TEAEs adjusted by duration of exposure to study treatment are scaled such that it provides an incidence rate per 100 patient-years. If a participant has multiple events, the time of exposure will be calculated to first occurrence of the AE being considered. If a participant has no events, the total time at risk will be used. 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 IMP.

  2. Exposure-adjusted incidence rate of Serious TEAEs during the Initial Treatment Period

    Time frame: From Baseline until end of the Initial Treatment Period (up to 16 weeks)

    The TEAEs adjusted by duration of exposure to study treatment are scaled such that it provides an incidence rate per 100 patient-years. If a participant has multiple events, the time of exposure will be calculated to first occurrence of the AE being considered. If a participant has no events, the total time at risk will be used. A 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

  3. Exposure-adjusted incidence rate of TEAEs leading to withdrawal during the Initial Treatment Period

    Time frame: From Baseline until end of the Initial Treatment Period (up to 16 weeks)

    The TEAEs adjusted by duration of exposure to study treatment are scaled such that it provides an incidence rate per 100 patient-years. If a participant has multiple events, the time of exposure will be calculated to first occurrence of the AE being considered. If a participant has no events, the total time at risk will be used. An AE is any untoward medical occurrence in a patient or clinical study participant, temporally associated with the use of IMP, whether or not considered related to IMP.

  4. Exposure-adjusted incidence rate of Selected Safety Topics of Interest (including incidence of infections [serious, opportunistic, fungal, and TB], IBD, and injection site reactions) over the Initial Treatment Period

    Time frame: Up to Week 16

    Safety topics of interest for this study include events for which special monitoring will be for infections (serious, opportunistic, fungal, and tuberculosis [TB]), inflammatory bowel disease (IBD), and injection site reactions.

  5. Mean Change from Baseline in vital signs (Systolic Blood Pressure and Diastolic Blood Pressure) at Week 16

    Time frame: Baseline and Week 16

    Blood pressure (Systolic Blood Pressure and Diastolic Blood Pressure) will be measured in millimeters of mercury (mmHg).

  6. Mean Change from Baseline in vital sign (Pulse rate) at Week 16

    Time frame: Baseline and Week 16

    Pulse Rate will be measured in beats per minute (beats/min).

  7. Mean Change from Baseline in Biochemistry Laboratory Analyses (glucose, potassium, sodium, calcium) at Weeks 4,12, and 16

    Time frame: Baseline, Weeks 4, 12, and 16

    Glucose, potassium, sodium and calcium will be measured in millimoles per liter (mmol/L).

  8. Mean Change from Baseline in Biochemistry Laboratory Analyses (total bilirubin and direct bilirubin, total protein, blood urea nitrogen, and creatinine) at Weeks 4,12, and 16

    Time frame: Baseline, Weeks 4, 12, and 16

    Biochemistry parameters (total bilirubin and direct bilirubin, total protein, blood urea nitrogen [BUN], and creatinine) will be measured in micromols per liter (μmol/L).

  9. Mean Change from Baseline in Biochemistry Laboratory Analyses (alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltransferase) at Weeks 4,12, and 16

    Time frame: Baseline, Weeks 4, 12, and 16

    Biochemistry parameters (alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyltransferase (GGT) will be measured in units per liter (U/L).

  10. Mean Change from Baseline in Hematology Laboratory Analyses (hemoglobin) at Weeks 4,12, and 16

    Time frame: Baseline, Weeks 4, 12, and 16

    Hemoglobin will be measured in grams per liter (g/L).

  11. Mean Change from Baseline in Hematology Laboratory Analyses (hematocrit) at Weeks 4,12, and 16

    Time frame: Baseline, Weeks 4, 12, and 16

    Hematocrit will be measured in volume percentage (%) of red blood cells in blood.

  12. Mean Change from Baseline in Hematology Laboratory Analyses (platelets, leukocytes, neutrophils, lymphocytes, eosinophils, basophils, and monocytes) at Weeks 4, 12, and 16

    Time frame: Baseline, Weeks 4, 12, and 16

    Platelets, leukocytes, neutrophils, lymphocytes, eosinophils, basophils, and monocytes will be measured in number of blood cells per liter (10^9/L)

  13. Mean Change from Baseline in Hematology Laboratory Analyses (erythrocytes)

    Time frame: Baseline, Week 4, 12, and 16

    Erythrocytes will be measured in number of red blood cells per liter (10^12/L).

  14. Incidence rate for Positive, Negative, Missing Plasma Anti-Bimekizumab Antibodies at Baseline and Week 16

    Time frame: Baseline and Week 16

    Positive, negative, and missing plasma anti-bimekizumab antibodies detection prior to and following IMP administration during the Initial Treatment Period.

Sponsors and collaborators

Lead sponsor

UCB Biopharma SRL

Industry

Registry information

Official study title

A Multicenter, Open-Label Study to Assess The Pharmacokinetics And Safety of Bimekizumab in Pubertal Children And Adolescents With Moderate to Severe Hidradenitis Suppurativa

Important dates

Study start
2025
Primary completion
2026
Study completion
2029
First posted
Apr 10, 2025
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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