Study

Recruiting Not a phased study

Sources: ClinicalTrials.gov Checked: 11 October 2026 Not medical advice

This trial at a glance

Status Recruiting
Phase Not a phased study
Sponsor Janssen Research & Development, LLC
Registry number NCT07194070
Started 17 December 2025 Today 16 October 2026 Estimated completion 26 May 2030

Where this trial is running

Trial sites and the status recorded for each
SiteCityState or countryStatus at this site
The Royal Women's Hospital Parkville VIC Recruiting
Mater Misericordiae Ltd South Brisbane QLD Recruiting

voxsanity.com.au · trial sites from public registries · registry record synced 11 October 2026 · not medical advice

Who can join

Age 18 Years and over
Sex Female participants only
Healthy volunteers Not accepted
Enrolment target 175

The official eligibility criteria

Registry text, reproduced exactly. These are the words the trial's sponsor published on ClinicalTrials.gov. They have not been edited, shortened or rewritten, and they are written for researchers rather than for patients.

Inclusion Criteria:

* Pregnant with an estimated gestational age (GA) (based on ultrasound dating) up to week 24

* History of a previous alloimmunized pregnancy that included at least one of the following: Fetal anemia diagnosed by middle cerebral artery (MCA) doppler ultrasound; Received greater than or equal to (\>=) 1 intrauterine transfusion (IUT) as a result of hemolytic disease of the fetus and newborn (HDFN); Fetal hydrops; Stillbirth or fetal demise with fetal or placental pathology indicative of HDFN; Neonatal exchange transfusion due to HDFN; Neonatal simple transfusion due to HDFN; Neonatal hyperbilirubinemia due to HDFN; Positive direct antiglobulin test (DAT) in neonate

* Documented presence of maternal alloantibody based on local laboratory results during current pregnancy

* Evidence of an antigen-positive fetus corresponding to the current maternal alloantibody: Fetal antigen status confirmed by cell-free fetal DNA (cffDNA); OR Fetal antigen status confirmed by amniocentesis; OR Paternal genotype confirmed

* Pregnant participant or a legally acceptable representative has provided informed consent (per local regulations or ethics committee requirements) for the collection and use of their medical data and the medical data for their corresponding fetuses/neonates/infants/children

Exclusion Criteria:

* Participant actively participating in an interventional trial of an investigational agent

* At risk for HDFN due to ABO being the sole alloimmunization antigen in the current pregnancy (that is, ABO plus another antigen is permissible)

Dates on the record

Started 17 December 2025
Estimated completion 26 May 2030
Registry last updated 25 September 2026
Checked by Voxsanity 11 October 2026

Results, publications and the official record

Sources and dates

  • ClinicalTrials.gov – the record this page reformats
  • ClinicalTrials.gov processing date: 25 September 2026.
  • This page last checked by Voxsanity: 11 October 2026.

Voxsanity reformats data from public registries into this layout. It does not edit, interpret or add to what the registry published.

Not medical advice.

Individual trial records are refreshed on a rolling basis rather than all at once, so a record may be up to several weeks old. Each trial page and trial card shows the date its own record was last synced. Where a record has lagged, its status, sites and enrolment can differ from the current registry state in either direction, so check the registry link on the trial page before acting on them.

Letter for your doctor

A one-page summary of this trial to print or email to your GP. It carries the registry's own record of the trial and its eligibility criteria, and nothing Voxsanity has written about whether it suits you.