A Study to Assess Pregnancy, Neonatal and Infant Outcomes in Participants Exposed to Nipocalimab (PETUNIA)

October 30, 2026 updated by: Janssen Research & Development, LLC

Nipocalimab Pregnancy Enhanced Tracking With Neonatal and Infant Assessment

The purpose of this study is to find out how often:

  • Pregnancy problems, complications in mothers, and health issues in newborn babies occurred in participants who took nipocalimab just before or during pregnancy.
  • Serious infections occur in newborns and infants born to participants who took nipocalimab just before or during pregnancy.
  • Babies are born with major birth defects (not related to chromosomes) in pregnancies where nipocalimab was taken just before or during pregnancy.

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.

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.
Observational

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.
162

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.

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

The study population are cases reported to the Company global safety database from post-marketing reports of exposure to nipocalimab during pregnancy.

Description

Inclusion Criteria:

- Documented exposure to least one dose of nipocalimab any time immediately before ( 1 week [7 days ] before estimated date of conception) or during pregnancy in the post-marketing setting

Exclusion Criteria:

  • Reports in which the pregnant person discontinued nipocalimab 1 week (7 days) before the estimated date of conception
  • Indirect case reports (reported by someone other than the patient or the health care provider [HCP]) for which the reporter refuses to provide follow-up information, and the participants or HCP cannot be identified based on the information provided
  • Case lacking reporter contact details
  • Cases where only the father/male partner is exposed to nipocalimab during partner's pregnancy
  • Cases occurring in an interventional setting (that is, clinical trials)

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

  • Observational Models: COHORT
  • Time Perspectives: PROSPECTIVE

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Participants Exposed to Nipocalimab Immediately Before or During Pregnancy

Participants with documented exposure to at least one dose of nipocalimab any time immediately before (within 1 week [7 days] before estimated date of conception) or during pregnancy in the post-marketing setting. No drug will be administered as a part of this study. Participants received nipocalimab as per their routine clinical practice settings.

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
Prevalence of Fetal Growth Restriction
Time Frame: During pregnancy (Up to Week 42)

A fetus with an estimated fetal weight less than the 10th percentile for gestational age based upon a population reference or standard.
During pregnancy (Up to Week 42)
Prevalence of Small for Gestational Age
Time Frame: At birth

A newborn with a birthweight less than the 10th percentile for gestational age based upon a population reference or standard.
At birth
Prevalence of Hypertensive Disorders of Pregnancy
Time Frame: From 20 weeks gestation through 6 weeks postpartum

Hypertensive disorder of pregnancy (that is, preeclampsia, gestational hypertension, hemolysis, elevated liver enzymes, and low platelet count (HELLP) syndrome, or eclampsia).
From 20 weeks gestation through 6 weeks postpartum
Prevalence of Placental Abruption
Time Frame: During pregnancy (Up to Week 42)

A condition in which the placenta has begun to separate from the uterus before the fetus is born.
During pregnancy (Up to Week 42)
Prevalence of Serious Infections in Neonates
Time Frame: Birth to 27 days

Infections resulting in a hospitalization that occur within the first 27 days of life (0-27 days).
Birth to 27 days
Prevalence of Serious Infections in Infants
Time Frame: 28 days to 365 days after birth

Infections resulting in a hospitalization that occur between 28 and 365 days of life.
28 days to 365 days after birth
Prevalence of Non-chromosomal Major Congenital Malformations
Time Frame: During pregnancy (up to Week 42) and up to 1 year after birth

Congenital abnormality that requires medical or surgical treatment, has a serious adverse effect on health and development, or has significant cosmetic impact, excluding those that are chromosomal or Mendelian-inherited anomalies.
During pregnancy (up to Week 42) and up to 1 year after birth

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
Prevalence of Live Birth
Time Frame: At Delivery

Delivery of a live newborn.
At Delivery
Prevalence of Spontaneous Abortion
Time Frame: Prior to 20 weeks gestation

Clinically detected pregnancy loss before 20 completed weeks of gestation that occurs without medical or surgical intervention to terminate the pregnancy.
Prior to 20 weeks gestation
Prevalence of Stillbirth
Time Frame: At or after 20 completed weeks of gestation

Fetus born dead at >= 20 weeks gestation or weighing >= 350 grams. Fetal death occurring > 20 weeks but less than 28 weeks gestation is considered an early fetal loss. Fetal death occurring > 28 weeks is considered a late fetal loss. If gestational age is unknown, stillbirth refers to a fetus weighing >= 350 grams.
At or after 20 completed weeks of gestation
Prevalence of Preterm Birth
Time Frame: Prior to 37 completed weeks of gestation

Delivery of a viable infant before 37 completed weeks of gestation.
Prior to 37 completed weeks of gestation
Prevalence of Intrapartum Hemorrhage
Time Frame: During pregnancy (Up to 42 weeks)

Maternal complication characterized by significant blood loss occurring during pregnancy.
During pregnancy (Up to 42 weeks)
Prevalence of Postpartum Hemorrhage
Time Frame: At Birth and after 12 weeks delivery

Maternal complication characterized by significant blood loss occurring after pregnancy.
At Birth and after 12 weeks delivery
Prevalence of Neonatal Death
Time Frame: Birth to 27 days

Death that occurs within the first 27 days of life (0-27 days).
Birth to 27 days
Prevalence of Infant Death
Time Frame: 28 days to 365 days after birth

Death that occurs between 28 and 365 days of life.
28 days to 365 days after birth

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.
Janssen Research & Development, LLC

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: Janssen Research & Development, LLC Clinical Trial, Janssen Research & Development, LLC

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 30, 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.
April 30, 2036

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.
April 30, 2036

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).
October 30, 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.
October 30, 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 4, 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 4, 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.
October 30, 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.
October 1, 2026

More Information

Terms related to this study

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.
  • 80202135MYG4003
  • 80202135MYG4003 (Other Identifier: Janssen Research & Development, LLC)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The data sharing policy of Johnson & Johnson Innovative Medicine is available at www.jnj.com/innovativemedicine/our-innovation/clinical-trials/transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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