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A Study to Learn if Bimekizumab Given in Different Ways is Safe and Moves Similarly Throughout the Body Over Time in Adults

An Open-label, Randomized, Parallel-group, Noninferiority Study to Evaluate the Pharmacokinetics of Bimekizumab Administered Intravenously or as a Subcutaneous Injection in Participants With Active Psoriatic Arthritis and/or Active Axial Spondyloarthritis

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07290036
Enrollment
392
Registered
2025-12-17
Start date
2025-12-10
Completion date
2028-09-14
Last updated
2026-07-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Axial Spondyloarthritis, Psoriatic Arthritis

Keywords

Bimekizumab, BKZ, Phase 1B

Brief summary

To demonstrate that bimekizumab administered intravenously is noninferior to subcutaneous administration.

Interventions

DRUGBimekizumab regimen 1 iv

Participants will receive bimekizumab (BKZ) at pre-specified time points.

DRUGBimekizumab regimen 2 iv

Participants will receive bimekizumab (BKZ) at pre-specified time points.

DRUGBimekizumab regimen 3 sc

Participants will receive bimekizumab (BKZ) at pre-specified time points.

Sponsors

UCB Biopharma SRL
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Be 18+ years old and legally able to consent 2. Have active psoriatic arthritis (PsA) or axial spondyloarthritis (axSpA), suitable for bimekizumab treatment 3. Weigh between 45-100 kg (females) or 50-100 kg (males). 4. Be biologic disease-modifying anti-rheumatic drug (bDMARD)-naïve or have stopped bDMARDs ≥3 months or 5 half-lives ago

Exclusion criteria

1. Serious organ system disorders (e.g., heart, liver, kidney, gastrointestinal, neuro) 2. Severe psychiatric issues or substance abuse in the past year 3. Recent or chronic infections, including tuberculosis (TB) or nontuberculous mycobacterium (NTMB) 4. Other inflammatory diseases (e.g., rheumatoid arthritis (RA), lupus, inflammatory bowel disease (IBD)) 5. Recent live vaccines (within 8 weeks) or Bacillus Calmette-Guerin (BCG) (within 1 year) 6. Recent use of glucagon-like peptide-1 (GLP-1) agonists (within 28 weeks)

Design outcomes

Primary

MeasureTime frameDescription
Steady-state Trough Concentration (Ctrough,ss) at Week 16Week 16Steady-state trough concentration (Ctrough,ss) will be reported.

Secondary

MeasureTime frameDescription
Occurrence of treatment-emergent Adverse Events (TEAEs) from Baseline to the end of Safety Follow-Up (SFU) VisitFrom Baseline to the end of SFU Visit (up to Week 29)An adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. 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 study intervention. A TEAE is defined as any AE with a start on or after the first administration of study intervention and on or before 17 weeks after the final administration of study intervention. This includes AEs that worsen in intensity after the start of study intervention.
Occurrence of treatment-emergent Serious Adverse Events (SAEs) from Baseline to the end of SFU VisitFrom Baseline to the end of SFU Visit (up to Week 29)An SAE is any untoward medical occurrence that, at any dose, meets 1 or more of the criteria listed: Results in death; Is life-threatening; Requires inpatient hospitalization or prolongation of existing hospitalization; Results in persistent or significant disability/incapacity; Is a congenital anomaly/birth defect; Other situations: Important medical events that may not be immediately life-threatening or result in death or hospitalization but may jeopardize the participant or may require medical or surgical intervention. A TEAE is defined as any AE with a start on or after the first administration of study intervention and on or before 17 weeks after the final administration of study intervention. This includes AEs that worsen in intensity after the start of study intervention.
Occurrence of TEAEs leading to withdrawal of study interventionFrom Baseline to the end of SFU Visit (up to Week 29)An adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. 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 study intervention. A TEAE is defined as any AE with a start on or after the first administration of study intervention and on or before 17 weeks after the final administration of study intervention. This includes AEs that worsen in intensity after the start of study intervention. TEAEs leading to withdrawal of IMP of the study will be reported.

Countries

Bulgaria, Czechia, Germany, Poland, Slovakia, United States

Contacts

CONTACTUCB Cares
ucbcares@ucb.com+18445992273
STUDY_DIRECTORUCB Cares

001 844 599 22733 (UCB)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 7, 2026