Status:

RECRUITING

A Study to Assess the Concentration of Bimekizumab in Mature Breast Milk From Mothers Receiving Treatment With Bimzelx® (Bimekizumab)

Lead Sponsor:

UCB Biopharma SRL

Conditions:

Moderate to Severe Plaque Psoriasis

Psoriatic Arthritis

Eligibility:

FEMALE

18+ years

Phase:

PHASE1

Brief Summary

Primary purpose of the study is to assess the concentration of bimekizumab in mature human breast milk.

Eligibility Criteria

Inclusion

  • Study participant must be at least 18 years of age at the time of signing the informed consent.
  • Study participant is being treated with commercial bimekizumab per locally approved prescribing information and in accordance with her treating physician.
  • Study participant is breastfeeding and intends to breastfeed throughout the Sampling Period.
  • The decision to treat with bimekizumab and to breastfeed is made independently from and prior to the study participant consenting to participate in the study.
  • Study participant must be on bimekizumab treatment for at least 12 weeks after delivery and since starting/restarting/continuing bimekizumab prior to sampling (prior to start of the Sampling Period).
  • A female study participant is eligible to participate if she is not pregnant and does not plan to become pregnant during the study.

Exclusion

  • Study participant has any medical, obstetrical, or psychiatric condition that, in the opinion of the Investigator, could jeopardize or would compromise the study participant's ability to participate in this study.
  • The infant has any abnormality noted on physical examination or medical history that, in the opinion of the Investigator, may jeopardize or compromise study participation.
  • Study participant has a history of chronic alcohol or drug abuse within the previous last year.
  • Study participant has history of breast implants, breast augmentation, or breast reduction surgery.
  • Study participant plans a surgical intervention during the Screening Period and Sampling Period or anticipates having surgery while participating in the Sampling Period (does not apply to tubal ligation).
  • Study participant or her infant has participated in another study of an investigational medicinal product (IMP) (and/or an investigational device) within the previous 6 months or is currently participating in another study of an IMP (and/or an investigational device), unless the study is UCB PS0036 or a bimekizumab registry study.
  • Study participant or her infant has previously participated (ie, entered the sampling period) in this study.

Key Trial Info

Start Date :

November 5 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

May 3 2027

Estimated Enrollment :

20 Patients enrolled

Trial Details

Trial ID

NCT06888193

Start Date

November 5 2025

End Date

May 3 2027

Last Update

December 26 2025

Active Locations (8)

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Page 1 of 2 (8 locations)

1

Up0122 105

Santa Monica, California, United States, 90404

2

Up0122 103

South Miami, Florida, United States, 33143

3

Up0122 102

Durham, North Carolina, United States, 27710

4

Up0122 202

Calgary, Canada