A Study to Evaluate the Placental Transfer of Dapirolizumab Pegol to the Infant(s) From Pregnant Study Participants With Active Systemic Lupus Erythematosus Who Are Administered Dapirolizumab Pegol

November 6, 2026 updated by: UCB Biopharma SRL

A Prospective, Open-Label, Single-Arm, Multicenter Pharmacokinetic Study Evaluating the Placental Transfer of Dapirolizumab Pegol to the Infant(s) From Pregnant Study Participants With Active Systemic Lupus Erythematosus Who Are Administered Dapirolizumab Pegol

The purpose of the study is to assess transfer of dapirolizumab pegol (DZP) across the placenta to infants from mothers who are administered DZP

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
25

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: UCB Cares
  • Phone Number: 001 844 599 2273

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 45 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Participant must be greater than or equal to (≥)18 to less than or equal to (≤) 45 years of age at the time of signing the informed consent form (ICF)
  • Participant must be considered reliable and capable of adhering to the protocol and visit schedule according to the judgment of the investigator
  • Participant is pregnant and at ≥14 gestational week (GW) and 0 days and <28 GW and 0 days at the time of the first dose of DZP in the study. An ultrasound examination and the last menstrual period (LMP) will be used to determine the estimated date of delivery, to document the gestational age for the study, and to document a viable intrauterine pregnancy
  • Participant has not been previously exposed to DZP
  • Participant has been diagnosed with SLE by a qualified physician (eg, rheumatologist, internal medicine expert, immunologist, nephrologist, or dermatologist) as confirmed by meeting the 2019 SLE EULAR/ACR classification criteria for SLE
  • Participant has an unmet medical need for a treatment intervention for SLE during their pregnancy as determined by the investigator based on the following criteria:

Maternal disease activity score as measured by a SLEPDAI score without serology ≥1 AND at least one of the risk factors specified in the protocol for SLE-associated maternal and/or fetal complications during pregnancy

- Body weight ≥40 kilograms (kg) and ≤150kg

Exclusion Criteria:

  • Study participant has any evidence or medical history of a known non-autoimmune obstetrical condition with a high likelihood for pregnancy loss, or her fetus has any medical or surgical condition or history that, in the opinion of the investigator, could jeopardize or would compromise the study participant's ability to participate in this study or the outcome of the pregnancy
  • Study participant has a history of chronic alcohol or drug abuse within the previous 24 weeks
  • Study participant has a known hypersensitivity to any components of DZP including polyethylene glycol (PEG) or comparative drugs (and/or an investigational device) as stated in this protocol

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Dapirolizumab pegol (DZP)

Pregnant women will receive DZP by intravenous (iv) administration during 2nd and 3rd trimester and after delivery they may continue for up to 1 year (if not breastfeeding).
Drug: Dapirolizumab pegol (DZP)

Study participants will receive DZP at pre-specified timepoints

Other Names:
  • CDP7657
  • DZP

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Plasma concentration of DZP in the infants at birth
Time Frame: At Birth during this study

Plasma concentration of DZP will be reported in infants at birth.
At Birth during this study
Plasma concentration of DZP in mothers at delivery
Time Frame: At Delivery during this study

Plasma concentration of DZP in mothers at delivery will be reported.
At Delivery during this study
Ratio between plasma concentration of DZP between the infants and mother at birth/delivery
Time Frame: Infants: At Birth; Mothers: At Delivery during this study

Ratio of plasma concentration of DZP between the infants and mother at birth/delivery will be reported.
Infants: At Birth; Mothers: At Delivery during this study

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Plasma concentration of DZP after birth in the infants from mothers continuing DZP treatment postpartum
Time Frame: At 4 weeks, 8 weeks, and 12 weeks after birth

Plasma concentration of DZP at 4 weeks or 8 weeks, and at 12 weeks after birth in the infants from mothers continuing DZP treatment postpartum will be reported.
At 4 weeks, 8 weeks, and 12 weeks after birth
Predose and postdose plasma concentrations of DZP in mothers during pregnancy
Time Frame: Predose and postdose during second and third trimester

Predose and postdose plasma concentrations of DZP in mothers during pregnancy will be reported.
Predose and postdose during second and third trimester
DZP plasma concentrations at 12 and 14 Weeks postpartum in mothers continuing DZP treatment postpartum
Time Frame: Predose and postdose at Week 12 and Week 14 postpartum

DZP plasma concentrations at 12 weeks (predose and postdose) and 14 weeks postpartum in mothers continuing DZP treatment postpartum will be reported.
Predose and postdose at Week 12 and Week 14 postpartum
DZP plasma concentrations at 12 weeks postpartum in mothers stopping DZP treatment postpartum
Time Frame: At Week 12 postpartum

DZP plasma concentrations at 12 weeks postpartum in mothers stopping DZP treatment postpartum will be reported.
At Week 12 postpartum
Treatment-emergent adverse events (TEAEs) of mothers
Time Frame: From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)

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. AEs for the mothers will be considered TEAEs if they occur after the start of DZP treatment in this study.
From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)
Serious TEAEs of mothers
Time Frame: From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)

An SAE is 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 or significant disability/incapacity
  • Is a congenital anomaly/birth defect
  • Other important medical events which based on medical or scientific judgement may jeopardise the patients, or may require medical or surgical intervention to prevent any of the above.
From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)
TEAEs of special interest of mothers
Time Frame: From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)

An AE of special interest is any AE that a regulatory authority has mandated to be reported on an expedited basis, regardless of the seriousness, expectedness, or relatedness of the AE to the administration of a UCB product/compound.
From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)
TEAEs of special monitoring of mothers
Time Frame: From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)

An AE of special monitoring is a product-specific AE, adverse reaction, or safety topic requiring special monitoring by UCB.
From first intervention (Day1) to End of Safety Follow-Up (Up to 1 year and 9 months)
AEs of infants
Time Frame: From birth to End of Safety Follow-Up (Up to 12 months)

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.
From birth to End of Safety Follow-Up (Up to 12 months)
Serious AEs of infants
Time Frame: From birth to End of Safety Follow-Up (Up to 12 months)

An SAE is 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 or significant disability/incapacity
  • Is a congenital anomaly/birth defect
  • Other important medical events which based on medical or scientific judgement may jeopardise the patients, or may require medical or surgical intervention to prevent any of the above.
From birth to End of Safety Follow-Up (Up to 12 months)
AEs of special interest of infants
Time Frame: From birth to End of Safety Follow-Up (Up to 12 months)

An AE of special interest is any AE that a regulatory authority has mandated to be reported on an expedited basis, regardless of the seriousness, expectedness, or relatedness of the AE to the administration of a UCB product/compound.
From birth to End of Safety Follow-Up (Up to 12 months)
AEs of special monitoring of infants
Time Frame: From birth to End of Safety Follow-Up (Up to 12 months)

An AE of special monitoring is a product-specific AE, adverse reaction, or safety topic requiring special monitoring by UCB.
From birth to End of Safety Follow-Up (Up to 12 months)
Pregnancy outcome
Time Frame: At the end of pregnancy during the study

Pregnancy outcome at the end of pregnancy during the study will be reported
At the end of pregnancy during the study
Predicted area under the curve (AUC) over the dosing interval at steady state across the second and third trimesters of pregnancy
Time Frame: Second and Third Trimesters

Predicted AUC over the dosing interval at steady state across the second and third trimesters of pregnancy will be reported.
Second and Third Trimesters
Predicted trough plasma concentration (Ctrough) over the dosing interval at steady state across the second and third trimesters of pregnancy
Time Frame: Second and Third Trimesters

Predicted Ctrough over the dosing interval at steady state across the second and third trimesters of pregnancy will be reported.
Second and Third Trimesters
Predicted maximum plasma concentration (Cmax) over the dosing interval at steady state across the second and third trimesters of pregnancy
Time Frame: Second and Third Trimesters

Predicted Cmax over the dosing interval at steady state across the second and third trimesters of pregnancy will be reported.
Second and Third Trimesters
Predicted AUC over the dosing interval at steady state across the postpartum
Time Frame: Up to 14 weeks of postpartum

Predicted AUC over the dosing interval at steady state across the postpartum will be reported.
Up to 14 weeks of postpartum
Predicted Ctrough over the dosing interval at steady state across the postpartum
Time Frame: Up to 14 weeks of postpartum

Predicted Ctrough over the dosing interval at steady state across the postpartum will be reported.
Up to 14 weeks of postpartum
Predicted Cmax over the dosing interval at steady state across the postpartum
Time Frame: Up to 14 weeks of postpartum

Predicted Cmax over the dosing interval at steady state across the postpartum will be reported.
Up to 14 weeks of postpartum

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
UCB Biopharma SRL

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: UCB Cares, 001 844 599 22733 (UCB)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 15, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 30, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 6, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 13, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • UP0155
  • 2025 (U.S. NIH Grant/Contract)
  • 2025-524595-37 (Registry Identifier: EU Clinical Trials)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Due to the small sample size in this trial, individual patient-level data cannot be adequately anonymized as there is a reasonable likelihood that individual participants could be re-identified. For this reason, data from this trial cannot be shared.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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