A Study on Hemolytic Disease of the Fetus and Newborn (HDFN) Through Global Registry
- Conditions
- Hemolytic Disease of the Fetus and Newborn
- Registration Number
- NCT07194070
- Lead Sponsor
- Janssen Research & Development, LLC
- Brief Summary
The purpose of this non-interventional study is to prospectively evaluate the risk of anemia (decreased red blood cells) in fetuses (baby before birth) and neonates (baby just after birth) of pregnant participants who are at risk for hemolytic disease of the fetus and newborn (HDFN) and receiving standard of care (SoC). HDFN is a blood disease that occurs in babies before birth or just after birth when the blood types of the pregnant individual and babies are incompatible, thus resulting in fast breakdown of red blood cells (RBCs) of the fetus/baby.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- Female
- Target Recruitment
- 175
- 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
- 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)
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Percentage of Pregnancies That did not Result in Fetal Loss, Intrauterine Transfusion (IUT), Hydrops Fetalis, or Neonatal Death During the Neonatal Period From conception through 4 weeks of age or 41 weeks PMA, whichever is later Percentage of pregnancies that did not result in fetal loss (due to any reason), IUT, hydrops fetalis, or neonatal death (due to any reason) during the neonatal period will be reported. Hydrops fetalis is defined as the presence of greater than or equal to (\>=) 2 abnormal fluid collections in the fetus or neonate, such as ascites, pleural effusions, pericardial effusion, and generalized skin edema (skin thickness greater than \[\>\] 5 millimeter \[mm\]). Post-menstrual age (PMA) is the time elapsed between the first day of the last menstrual period and birth (gestational age) plus the time elapsed after birth (chronological age).
- Secondary Outcome Measures
Name Time Method Number of Participants With Hemolytic Disease of the Fetus and Newborn (HDFN) by Severity Through 4 weeks of age or 41 weeks PMA, whichever is later Number of participants in each HDFN severity index category will be reported. The severity of HDFN is defined as: 5 (fatal): fetal or neonatal death due to any reason; 4 (severe): hydrops fetalis (in fetus or newborn) or receiving IUT during pregnancy as a result of HDFN but not 5 (fatal); 3 (moderate): neonatal exchange transfusions received as a result of HDFN related hemolysis and jaundice but not 4 (severe) or 5 (fatal); 2 (mild): neonatal simple transfusions received due to HDFN after birth, with or without phototherapy, but not 3 (moderate), 4 (severe), or 5 (fatal); and 1 (minimal or none): not in 2 (mild), 3 (moderate), 4 (severe), or 5 (fatal) as described above. HDFN requiring phototherapy will be classified in this category.
Time to First Occurrence of IUT or Hydrops Fetalis From conception to delivery date (up to maximum of 42 weeks) Time to first occurrence of IUT or hydrops fetalis will be reported.
Modified Neonatal Morbidity and Mortality Index (mNMMI) in Live Newborn Neonates Through 38 weeks PMA or at discharge if earlier than 38 weeks PMA The mNMMI will be assessed with the following categories: fatal: neonatal death; major morbidity: any of intraventricular hemorrhage grade 3/4, seizures, hypoxic-ischemic encephalopathy, necrotizing enterocolitis stage 2/3, respiratory distress syndrome requiring mechanical ventilation, bronchopulmonary dysplasia requiring oxygen support, or persistent pulmonary hypertension; Minor morbidity: anemia requiring simple transfusion, hyperbilirubinemia requiring an exchange transfusion, hypotension requiring treatment, intraventricular hemorrhage grade 1/2, necrotizing enterocolitis stage 1, or respiratory distress syndrome not requiring mechanical ventilation; None: no major or minor morbidities described above. Hyperbilirubinemia requiring phototherapy will be classified in this category.
Number of IUTs Received During the Pregnancy From conception to delivery date (up to maximum of 42 weeks) Number of IUT's received during the pregnancy will be reported.
Trial Locations
- Locations (2)
Baylor College of Medicine
🇺🇸Houston, Texas, United States
Fondazione Policlinico Universitario A Gemelli IRCCS
🇮🇹Roma, Italy
Baylor College of Medicine🇺🇸Houston, Texas, United States