CClinicalTrials.gg
CompletedNCT03842189Updated Mar 25, 2026Results posted

A Study to Evaluate the Safety, Efficacy, Pharmacokinetics and Pharmacodynamics of M281 Administered to Pregnant Women at High Risk for Early Onset Severe Hemolytic Disease of the Fetus and Newborn (HDFN)

A Phase 2 interventional study of M281 in Hemolytic Disease of the Fetus and Newborn, sponsored by Janssen Research & Development, LLC. Completed at 19 sites in 9 countries. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-03-25.

Sponsored by Janssen Research & Development, LLC · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Registered 10 months after the study started (first participant enrolled Apr 2018, registered Feb 2019).
Phase
Phase 2
Study type
Interventional
Enrollment
25
Allocation
Not applicable
Ages
18 Years and older
Sex
Female
01

Study summary

The purpose of this study is to evaluate the safety in mother and neonate/infant of M281 administered to pregnant women who are at high risk for Early Onset Severe Hemolytic Disease of the Fetus and Newborn (EOS-HDFN). The effectiveness of the investigational drug M281 will be measured by looking at the percentage of participants with live birth at or after gestational age (GA) 32 weeks and without a need for an intrauterine transfusion (IUT) throughout their entire pregnancy.

02

Conditions studied

  • Hemolytic Disease of the Fetus and Newborn

Keywords

  • M281
  • Hemolytic Disease of the Fetus and Newborn
  • HDFN
  • Rhesus Disease
  • Hemolytic disease due to fetomaternal alloimmunization
  • Hemolytic disease of the newborn with Kell alloimmunization
  • Rhesus (Rh) isoimmunization of foetus or newborn
  • Isoimmunization due to other red cell factors
  • ABO isoimmunization of foetus or newborn
  • Haemolytic anaemia due to other unclassified antibodies
  • Isoimmune
  • Isoimmunized
  • Isoimmunization
  • Alloimmune
  • Alloimmunized
  • Alloimmunization
  • Pregnant women
03

In context

Lead sponsor

Janssen Research & Development, LLC is the lead sponsor of 912 studies on the registry; 76 are open to participants now.

Of its 278 completed or terminated interventional studies of FDA-regulated products, 131 (47%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Approximately 15 eligible participants and their offspring will be enrolled
  • Each participant must meet all of the following criteria to be enrolled in the study:
  • Female and greater than or equal to (>=)18 years of age
  • Pregnant to an estimated gestational age of between 8 up to 14 weeks
  • A previous pregnancy with a gestation that included at least one of the following prior to week 24 gestation:
  • Severe fetal anemia, defined as hemoglobin less than or equal to (\<=) 0.55 multiples of the median (MOM) for gestational age
  • Fetal hydrops with peak systolic velocity MOM >=1.5
  • Stillbirth with fetal or placental pathology indicative of hemolytic disease of the fetus and newborn (HDFN)
  • Maternal alloantibody titers for anti-D of >=32, or anti-Kell titers >=4
  • Free fetal deoxyribonucleic acid consistent with an antigen-positive fetus (blood sample taken from mother)
  • Maternal evidence for Immunity to measles mumps, rubella, and varicella, as documented by serologies performed during Screening. If initial serologies are borderline or negative, they may be repeated at a second lab. Alternatively, vaccination records can be used to support evidence of immunity.
  • Screening immunoglobulin G and albumin levels within the laboratory normal range for gestational age of pregnancy
  • Willing to receive standard of care with intrauterine transfusion if clinically indicated
  • Agree to receive recommended vaccinations per local standard of care for both mother and child throughout the course of the study
  • It is recommended that patients are up-to-date on age-appropriate vaccinations prior to screening as per routine local medical guidelines. For study patients who received locally-approved (and including emergency use-authorized) Coronavirus Disease 2019 (COVID-19) vaccines recently prior to study entry, follow applicable local vaccine labelling, guidelines, and standard of care for pregnant women receiving immune-targeted therapy when determining an appropriate interval between vaccination and study enrollment

Exclusion criteria

Exclusion Criteria:

  • Currently pregnant with multiples (twins or more)
  • Pre-eclampsia In current pregnancy or history of pre-eclampsia in a previous pregnancy
  • Gestational hypertension in the current pregnancy
  • Current unstable hypertension
  • History of severe or recurrent pyelonephritis, 4 or more lower urinary tract infections in the past year or in a previous pregnancy
  • History of genital herpes infection
  • Active Infection at Screening or Baseline with Coxsackie, syphilis, cytomegalovirus, toxoplasmosis or herpes simplex 1 or 2, as evidenced by clinical signs and symptoms (evidence for prior Infection or exposure, but without clinical signs and symptoms of active infection is acceptable)
  • Active infection with tuberculosis as evidenced by positive QuantiFERON-tuberculosis testing
  • Requires treatment with corticosteroids or immunosuppression for disorders unrelated to the pregnancy (use of low-potency topical corticosteroids or intra-articular corticosteroids is permitted)
  • Has received or is expected to receive any live virus or bacterial vaccine within 12 weeks prior to screening or has a known need to receive a live vaccine while receiving nipocalimab, or within 12 weeks after the last administration of nipocalimab in the study or has received Bacille Calmett-Guérin (BCG) vaccine within 1 year prior to the first administration of nipocalimab
  • Currently receiving an antibody-based drug or an Fc-fusion protein drug
  • Received plasmapheresis and/or intravenous immunoglobulin during the current pregnancy for treatment of HDFN
  • COVID-19 infection: during the 6 weeks prior to baseline (regardless of vaccination status), have had any of: a) confirmed severe acute respiratory syndrome coronavirus(-2) (SARS-CoV-2) (COVID-19) infection (test positive), or; b) suspected SARS-CoV-2 infection (clinical features without documented test results), or; c) close contact with a person with known or suspected SARS-CoV-2 infection. Exception: may be included with a documented negative result for a validated SARSCoV-2 test: obtained at least 2 weeks after conditions a), b), c) above (timed from resolution of key clinical features if present, example fever, cough, dyspnea) and; with absence of all conditions a), b), c) above during the period between the negative test result and the baseline study visit
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
25 participants (actual)

Study arms

  • Experimental
    M281

    Drug: M281

Interventions

  • DrugM281

    Participants will receive once weekly intravenous (IV) infusions of M281

06

What researchers measure

Primary outcomes

  1. Number of Maternal Participants With Treatment-emergent Adverse Events (TEAEs)

    An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. TEAE was defined as any event occurring after the initiation of the first infusion of nipocalimab.

    Time frame: From baseline (Gestational Age [GA] Week 14) up to Postpartum (PP) Week 24 (up to 50 weeks)

  2. Number of Neonates/Infants With Adverse Events (AEs)

    An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality.

    Time frame: From Birth (PP Day 0) up to PP Week 96

  3. Number of Maternal Participants With Treatment-emergent Serious Adverse Events (TESAEs)

    SAE was defined as any untoward medical occurrence that resulted in death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, a persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, or a congenital anomaly/birth defect. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. TESAEs were any SAEs occurring after the initiation of the first infusion of nipocalimab.

    Time frame: From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)

  4. Number of Neonates/Infants With Serious Adverse Events (SAEs)

    SAE was defined as any untoward medical occurrence that resulted in death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, a persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, or a congenital anomaly/birth defect. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality.

    Time frame: From Birth (PP Day 0) up to PP Week 96

  5. Number of Maternal Participants With Treatment-emergent Adverse Events of Special Interest (TEAESIs)

    Number of maternal participants with TEAESIs were reported. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. All infections requiring anti-infective (that is, oral or intravenous antibacterial, antiviral, or antifungal) treatment and with hypoalbuminemia greater than or equal to (\>=) Grade 3 (less than \[\<\]20 gram per liter \[g/L\] by National Cancer Institute of Common Terminology Criteria for Adverse Events (NCI CTCAE) Version 5.0 criteria were considered an AESI for maternal participants. TEAE was defined as any event occurring after the initiation of the first infusion of nipocalimab.

    Time frame: From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)

  6. Number of Neonates/Infants With Adverse Events of Special Interest (AESIs)

    Number of neonates/infants with TEAESIs were reported. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. All infections requiring anti-infective (that is, oral or intravenous antibacterial, antiviral, or antifungal) treatment, unexpected/unusual childhood illnesses and Immunoglobulin G (IgG) concentrations \<200 milligrams per deciliter (mg/dL) at Week 24 through Week 47 or \<300 mg/dL at Week 48 through Week 96 were considered an AESI for neonates and infants.

    Time frame: From birth (PP Day 0) up to PP Week 96

  7. Maternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at Baseline

    Absolute value of ECG parameter - mean ventricular rate at baseline in maternal participants was reported. Electrocardiogram assessments included comments on whether the tracings were normal or abnormal, rhythm, presence of arrhythmia or conduction defects, morphology, any evidence of myocardial infarction, or ST segment, T Wave, and U Wave abnormalities.

    Time frame: Baseline (GA Week 14)

  8. Maternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at GA Week 36

    Absolute value of ECG parameter - mean ventricular rate at GA Week 36 in maternal participants was reported. Electrocardiogram assessments included comments on whether the tracings were normal or abnormal, rhythm, presence of arrhythmia or conduction defects, morphology, any evidence of myocardial infarction, or ST segment, T Wave, and U Wave abnormalities.

    Time frame: GA Week 36

  9. Maternal Participants: Change From Baseline in ECG Parameter- Mean Ventricular Rate

    Change from baseline in ECG parameter- mean ventricular rate in maternal participants was reported. Electrocardiogram assessments included comments on whether the tracings were normal or abnormal, rhythm, presence of arrhythmia or conduction defects, morphology, any evidence of myocardial infarction, or ST segment, T Wave, and U Wave abnormalities.

    Time frame: Baseline (GA Week 14) and GA Week 36

  10. Number of Maternal Participants With Treatment-emergent (TE) Clinically Important Laboratory and Biomarker Immunoglobulin G (IgG) Values Over Time

    Laboratory parameters included hematology, chemistry, blood Lipids panel, and Immunoglobulin G (IgG) parameters. TEAE was defined as any event occurring after the initiation of the first infusion of nipocalimab. Here, HDL: high-density lipoprotein, LDL: low-density lipoprotein. The during-pregnancy value of albumin \<20 g/L was from a local laboratory and was \>=20 g/L when analyzed at the central laboratory for the same time point.

    Time frame: From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)

  11. Number of Neonates or Infants With Clinically Important Laboratory and Biomarker Immunoglobulin G (IgG) Values Over Time

    Laboratory parameters included total bilirubin and biomarker included immunoglobulin G (IgG).

    Time frame: From Birth (PP Day 0) up to PP Week 96

  12. Maternal Participants: Absolute Value of Vital Signs - Body Temperature at Baseline

    Absolute value of vital signs - body temperature at baseline in maternal participants was reported.

    Time frame: Baseline (GA Week 14)

  13. Maternal Participants: Absolute Value of Vital Signs - Body Temperature at GA Week 36

    Absolute value of vital signs - body temperature at GA Week 36 in maternal participants was reported.

    Time frame: GA Week 36

  14. Maternal Participants: Absolute Value of Vital Signs - Body Temperature at PP Week 24

    Absolute value of vital signs - body temperature at PP Week 24 in maternal participants was reported.

    Time frame: PP Week 24

  15. Maternal Participants: Change From Baseline in Vital Sign - Body Temperature

    Change from baseline in vital signs- body temperature in maternal participants was reported.

    Time frame: Baseline (GA Week 14), GA Week 36, and PP Week 24

  16. Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at Baseline

    Absolute value of vital signs -respiratory rate at baseline in maternal participants was reported.

    Time frame: Baseline (GA Week 14)

  17. Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at GA Week 36

    Absolute value of vital signs -respiratory rate at GA Week 36 in maternal participants was reported.

    Time frame: GA Week 36

  18. Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 24

    Absolute value of vital signs - respiratory rate at PP Week 24 in maternal participants was reported.

    Time frame: PP Week 24

  19. Maternal Participants: Change From Baseline in Vital Sign - Respiratory Rate

    Change from baseline in vital signs- respiratory rate in maternal participants was reported.

    Time frame: Baseline (GA Week 14), GA Week 36, and PP Week 24

  20. Maternal Participants: Absolute Value of Vital Signs - Pulse Rate at Baseline

    Absolute value of vital signs - pulse rate at baseline in maternal participants was reported.

    Time frame: Baseline (GA Week 14)

  21. Maternal Participants: Absolute Value of Vital Signs - Pulse Rate at GA Week 36

    Absolute value of vital signs -pulse rate at GA Week 36 in maternal participants was reported.

    Time frame: GA Week 36

  22. Maternal Participants: Absolute Value of Vital Signs -Pulse Rate at PP Week 24

    Absolute value of vital signs -pulse rate at PP Week 24 in maternal participants was reported.

    Time frame: PP Week 24

  23. Maternal Participants: Change From Baseline in Vital Sign - Pulse Rate

    Change from baseline in vital signs -pulse rate in maternal participants was reported.

    Time frame: Baseline (GA Week 14), GA Week 36, and PP Week 24

  24. Maternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Baseline

    Absolute value of vital signs - SBP and DBP at baseline in maternal participants was reported.

    Time frame: Baseline (GA Week 14)

  25. Maternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at GA Week 36

    Absolute value of vital signs -SBP and DBP at GA Week 36 in maternal participants was reported.

    Time frame: GA Week 36

  26. Maternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 24

    Absolute value of vital signs - SBP and DBP at PP Week 24 in maternal participants was reported.

    Time frame: PP Week 24

  27. Maternal Participants: Change From Baseline in Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)

    Change from baseline in vital signs -SBP and DBP in maternal participants were reported.

    Time frame: Baseline (GA Week 14), GA Week 36, and PP Week 24

  28. Maternal Participants: Absolute Value of Vital Signs - Body Weight at Baseline

    Absolute value of vital signs - body weight at baseline in maternal participants was reported.

    Time frame: Baseline (GA Week 14)

  29. Maternal Participants: Absolute Value of Vital Signs - Body Weight at GA Week 36

    Absolute value of vital signs -body weight at GA Week 36 in maternal participants was reported.

    Time frame: GA Week 36

  30. Maternal Participants: Absolute Value of Vital Signs - Body Weight at PP Week 24

    Absolute value of vital signs included body weight at PP Week 24 in maternal participants was reported.

    Time frame: PP Week 24

  31. Maternal Participants: Change From Baseline in Vital Sign - Body Weight

    Change from baseline in vital signs- body weight in maternal participants was reported.

    Time frame: Baseline (GA Week 14), GA Week 36, and PP Week 24

  32. Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at Baseline

    Absolute value in vital signs parameter -body temperature at baseline was reported for all neonates/infants.

    Time frame: Baseline (PP Day 0)

  33. Neonates/Infants: Absolute Value of Vital Signs - Body Temperature at PP Week 1

    Absolute value of vital signs parameter -body temperature at PP Week 1 was reported for all neonates/infants.

    Time frame: PP Week 1

  34. Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 4

    Absolute value in vital signs parameter - body temperature at PP Week 4 was reported for all neonates/infants.

    Time frame: PP Week 4

  35. Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 24

    Absolute value in vital signs parameter -body temperature at PP Week 24 was reported for all neonates/infants.

    Time frame: PP Week 24

  36. Neonates/Infants: Change From Baseline in Vital Signs - Body Temperature

    Change from baseline in vital signs- body temperature were reported for all neonates/infants.

    Time frame: Baseline (PP Day 0), PP Weeks 1, 4, and 24

  37. Neonates/Infants: Absolute Value of Vital Signs - Body Weight at Baseline

    Absolute value of vital signs parameter- body weight at baseline was reported for all neonates/infants.

    Time frame: Baseline (PP Day 0)

  38. Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 1

    Absolute value of vital signs parameter - body weight at PP Week 1 was reported for all neonates/infants.

    Time frame: PP Week 1

  39. Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 4

    Absolute value of vital signs parameter - body weight at PP Week 4 was reported for all neonates/infants.

    Time frame: PP Week 4

  40. Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 24

    Absolute value of vital signs parameter - body weight at PP Week 24 was reported for all neonates/infants.

    Time frame: PP Week 24

  41. Neonates/Infants: Change From Baseline in Vital Signs -Body Weight

    Change from baseline in vital signs - body weight were reported for all neonates/infants.

    Time frame: Baseline (PP Day 0), PP Weeks 1, 4, and 24

  42. Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at Baseline

    Absolute value of vital signs parameter -respiratory rate at baseline was reported for all neonates/infants.

    Time frame: Baseline (PP Day 0)

  43. Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 1

    Absolute value of vital signs parameter - respiratory rate at PP Week 1 was reported for all neonates/infants.

    Time frame: PP Week 1

  44. Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 4

    Absolute value of vital signs parameter - respiratory rate at PP Week 4 was reported for all neonates/infants.

    Time frame: PP Week 4

  45. Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 24

    Absolute value of vital signs parameter- respiratory rate at PP Week 24 was reported for all neonates/infants.

    Time frame: PP Week 24

  46. Neonates/Infants: Change From Baseline in Vital Signs - Respiratory Rate

    Change from baseline in vital signs -respiratory rate was reported for all neonates/infants.

    Time frame: Baseline (PP Day 0), PP Weeks 1, 4, and 24

  47. Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Baseline

    Absolute value of vital signs parameter - SBP and DBP at baseline were reported for all neonates/infants.

    Time frame: Baseline (PP Day 0)

  48. Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 1

    Absolute value of vital signs parameter - SBP and DBP at PP Week 1 were reported for all neonates/infants.

    Time frame: PP Week 1

  49. Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 4

    Absolute value of vital signs parameter -SBP and DBP at PP Week 4 were reported for all neonates/infants.

    Time frame: PP Week 4

  50. Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 24

    Absolute value of vital signs parameter -SBP and DBP at PP Week 24 were reported for all neonates/infants.

    Time frame: PP Week 24

  51. Neonates/Infants: Change From Baseline in Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)

    Change from baseline in vital signs- SBP and DBP were reported for all neonates/infants.

    Time frame: Baseline (PP Day 0), PP Weeks 1, 4, and 24

  52. Percentage of Maternal Participants With Intrauterine Growth Restriction (IUGR) Based on Ultrasound Assessments

    Percentage of maternal participants with intrauterine growth restriction (IUGR) based on ultrasound assessments and guidelines from American College of Obstetricians and Gynecologists, and Society for Maternal-Fetal Medicine was reported. This outcome measure provided the incidence of with IUGR at delivery. IUGR is defined as weight below the 10th percentile for gestational age based on the World Health Organization (WHO) fetal growth curve.

    Time frame: Baseline (GA Week 14), GA Weeks 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36

  53. Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: Amniotic Fluid Index (AFI) at Baseline

    Percentage of maternal participants with abnormal amniotic fluid values: amniotic fluid index (AFI) at baseline was reported. The amniotic fluid volume abnormality was categorized as an AFI \<5 centimeter (cm) or \>24 cm.

    Time frame: Baseline (GA Week 14)

  54. Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 26

    Percentage of maternal participants with abnormal amniotic fluid values: AFI at GA Week 26 was reported. The amniotic fluid volume abnormality was categorized as an AFI \<5 cm or \>24 cm.

    Time frame: GA Week 26

  55. Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 36

    Percentage of maternal participants with abnormal amniotic fluid values: AFI at GA Week 36 was reported. The amniotic fluid volume abnormality was categorized as an AFI \<5 cm or \>24 cm.

    Time frame: GA Week 36

  56. Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: Maximum Vertical Pocket (MVP) at Baseline

    Percentage of maternal participants with abnormal amniotic fluid values: maximum vertical pocket (MVP) at baseline was reported. The amniotic fluid volume abnormality was categorized as MVP \<2 cm or \>8 cm.

    Time frame: From Baseline (GA Week 14)

  57. Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 18

    Percentage of maternal participants with abnormal amniotic fluid values: MVP at GA Week 18 was reported. The amniotic fluid volume abnormality was categorized as MVP \<2 cm or \>8 cm.

    Time frame: GA Week 18

  58. Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 22

    Percentage of maternal participants with abnormal amniotic fluid values: MVP at GA Week 22 was reported. The amniotic fluid volume abnormality was categorized as MVP \<2 cm or \>8 cm.

    Time frame: GA Week 22

  59. Number of Neonates/Infants With Appearance, Pulse, Grimace Response, Activity, Respiration (Apgar) Score

    Number of neonates/infants with Apgar score from 1 to 10 minutes of life were reported. The system provided a standardized assessment for infants after delivery. The Apgar score comprises five components: 1) color, 2) heart rate, 3) reflexes, 4) muscle tone, and 5) respiration, each of which is given a score of 0, 1, or 2. The score is reported at 1 minute and 5 minutes after birth for all infants, and at 5-minute intervals thereafter until 20 minutes for infants with a score less than 7. This is using an Apgar scale which ranges from minimum total score of 0 and maximum total score of 10, with higher score representing a better outcome.

    Time frame: 1, 5, and 10 minutes after birth at PP Day 0

  60. Number of Maternal Participants With Concomitant Medications and Therapies

    Number of maternal participants with concomitant medications and therapies were reported.

    Time frame: From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)

  61. Number of Neonates/Infants With Concomitant Medications and Therapies

    Number of neonates/infants with concomitant medications and therapies were reported.

    Time frame: From birth (PP Day 0) up to PP Week 96

  62. Percentage of Maternal Participants With Live Birth at or After Gestational Age (GA) Week 32 and Without an Intrauterine Transfusion (IUT) Throughout Their Entire Pregnancies

    Percentage of maternal participants with live birth at or after GA Week 32 and without an IUT throughout their entire pregnancies were reported.

    Time frame: From baseline (GA Week 14) up to GA Week 37

Secondary outcomes

  1. Percentage of Maternal Participants With Live Birth

    Percentage of maternal participants with live birth were reported.

    Time frame: From baseline (GA Week 14) up to GA Week 37

  2. Percentage of Maternal Participants Without an Intrauterine Transfusion (IUT) Before Gestational Age (GA) Week 24

    Percentage of maternal participants without an IUT before GA Week 24 were reported.

    Time frame: From baseline (GA Week 14) up to GA Week 24

  3. Maternal Participants : Gestational Age (GA) at First Intrauterine Transfusion (IUT)

    Gestational age (GA) at first IUT for maternal participants were reported.

    Time frame: From baseline (GA Week 14) up to GA Week 37

  4. Median Number of Intrauterine Transfusion (IUT) Per Maternal Participant

    Median number of intrauterine transfusion (IUT) per maternal participants were reported.

    Time frame: From baseline (GA Week 14) up to GA Week 37

  5. Frequency of Intrauterine Transfusions (IUTs) on Maternal Participants

    Frequency of intrauterine transfusions (IUTs) on maternal participants were reported. Frequency of IUTs was defined as total number of IUTs divided by the (date of delivery - date of first IUT +1)/7.

    Time frame: From baseline (GA Week 14) up to GA Week 37

  6. Percentage of Maternal Participants With Fetal Hydrops in Utero or Post Birth

    Percentage of maternal participants with fetal hydrops in utero or post birth were reported.

    Time frame: From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)

  7. Maternal Participants: Gestational Age at Time of Delivery

    Gestational age at time of delivery for maternal participants were reported.

    Time frame: From baseline (GA Week 14) up to GA Week 37

  8. Percentage of Neonates Who Required Phototherapy

    Percentage of neonates who required phototherapy were reported.

    Time frame: From birth (PP Day 0) up to PP Week 24

  9. Percentage of Neonates Who Required Exchange Transfusions

    Percentage of neonates who required exchange transfusions were reported.

    Time frame: From birth (PP Day 0) up to PP Week 24

  10. Duration of Postnatal Phototherapy Required by Neonates

    Duration of postnatal phototherapy required by neonates were reported.

    Time frame: From birth (PP Day 0) up to PP Week 24

  11. Percentage of Neonates Who Required Simple Transfusions in the First 12 Weeks of Life

    Percentage of neonates who required simple transfusions in the first 12 weeks of life were reported.

    Time frame: From birth (PP Day 0) up to PP Week 12

  12. Number of Simple Transfusions Required by Neonate in the First 12 Weeks of Life

    Number of simple transfusions required by neonate in the first 12 weeks of life were reported.

    Time frame: From birth (PP Day 0) up to PP Week 12

  13. Maternal Serum Unoccupied Neonatal Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes by Nipocalimab

    Maternal serum unoccupied neonatal concentration of Participants Fc Receptor \[FcRn\] receptor occupancy (RO) in Monocytes by nipocalimab were reported.

    Time frame: Baseline (GA Week 14), GA Week 16, GA Week 36, PP Day 0, PP Week 4, and PP Week 24

  14. Serum Unoccupied Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes of Neonate by Nipocalimab

    Serum unoccupied FcRn RO in monocytes of neonate by Nipocalimab were reported.

    Time frame: From birth (PP Day 0) up to PP Week 24

  15. Maternal Participants: Change From Baseline in Serum Concentration of Total Immunoglobulin G (IgG) and Subclasses (IgG1, IgG2, IgG3, IgG4), IgA, IgM, and IgE

    Change from baseline in serum concentration of total immunoglobulin G (IgG) and subclasses (IgG1, IgG2, IgG3, IgG4), IgA, IgM, and IgE were reported.

    Time frame: IgG: Baseline (GA Week 14), GA Week 16, GA Week 36, birth (PP Day 0), PP Week 4, and PP Week 24; IgG1, IgG2, IgG3, IgG4, IgA, IgM, and IgE: baseline (GA Week 14), GA Week 36

  16. Neonates/Infants: Change From Baseline in Serum Concentration of Total IgG, IgA, IgM, and IgE

    Change from baseline in serum concentration of total IgG, IgA, IgM, and IgE were reported in neonates/infants were reported.

    Time frame: Baseline (PP Day 0), PP Weeks 4, 24, 96

  17. Serum Concentrations of Nipocalimab in Maternal Participants

    Serum concentrations of Nipocalimab in maternal participants were reported.

    Time frame: Pre dose and post dose: GA Week 14 and GA Week 24; Birth (PP Day 0), PP Week 4 and PP Week 24

  18. Pediatric Quality of Life Inventory (PedsQL) Total and Sub Scale Score in Neonates/Infants

    The 45-item PedsQL infant Scales (ages 13-24 months) included physical functioning, physical symptoms, emotional functioning, social functioning, and cognitive functioning. Health summary score for psychosocial (sum of all items over number of items: emotional, social, cognitive functioning scales) and physical (sum of the items over number of items: physical functioning and symptoms scales), as well as a total score (sum of all items over number of items answered on all scales). Items were reverse-scored and linearly transformed to 0-100 scale (0=100, 1=75, 2=50, 3=25, 4=0). PedsQL a validated scale ranging from 0 -100, higher scores = a better quality of life.

    Time frame: PP Week 96

  19. Ages and Stages Questionnaires, Third Edition (ASQ-3) Total Domain Score in Neonates/Infants

    The ASQ-3 assesses young child's (2-66 months) development based on age and included 6 questions in each area of child development: communication, gross motor, fine motor, problem solving, and personal-social skills. Parents answered either yes (10 points), sometimes (5 points) or not yet (0 points) to each question to complete ASQ-3 and each domain score could range from 0 to 60 points which higher score signifying stronger development.

    Time frame: At PP 6 month, PP 12 month, and PP 24 month

07

Results

Posted Jan 28, 2026

Participant flow

Enrolled population included 13 maternal participants and 12 neonates born to maternal participants. There was one stillbirth which was not considered enrolled. Only livebirths were included in analyses and presented below.

Participant flow — Overall Study
MilestoneGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAW
Started32443243
Completed32443233
Not completed00000010
Withdrew: Lost to follow-up00000010

Outcome measures

PrimaryNumber of Maternal Participants With Treatment-emergent Adverse Events (TEAEs)

An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. TEAE was defined as any event occurring after the initiation of the first infusion of nipocalimab.

Time frame:
From baseline (Gestational Age [GA] Week 14) up to Postpartum (PP) Week 24 (up to 50 weeks)
Reported as:
Count of participants · Participants
Number of Maternal Participants With Treatment-emergent Adverse Events (TEAEs)
ParticipantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Number of Maternal Participants With Treatment-emergent Adverse Events (TEAEs)324413
PrimaryNumber of Neonates/Infants With Adverse Events (AEs)

An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality.

Time frame:
From Birth (PP Day 0) up to PP Week 96
Reported as:
Count of participants · Participants
Number of Neonates/Infants With Adverse Events (AEs)
ParticipantsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Number of Neonates/Infants With Adverse Events (AEs)324312
PrimaryNumber of Maternal Participants With Treatment-emergent Serious Adverse Events (TESAEs)

SAE was defined as any untoward medical occurrence that resulted in death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, a persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, or a congenital anomaly/birth defect. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. TESAEs were any SAEs occurring after the initiation of the first infusion of nipocalimab.

Time frame:
From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)
Reported as:
Count of participants · Participants
Number of Maternal Participants With Treatment-emergent Serious Adverse Events (TESAEs)
ParticipantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Number of Maternal Participants With Treatment-emergent Serious Adverse Events (TESAEs)20125
PrimaryNumber of Neonates/Infants With Serious Adverse Events (SAEs)

SAE was defined as any untoward medical occurrence that resulted in death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, a persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, or a congenital anomaly/birth defect. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality.

Time frame:
From Birth (PP Day 0) up to PP Week 96
Reported as:
Count of participants · Participants
Number of Neonates/Infants With Serious Adverse Events (SAEs)
ParticipantsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Number of Neonates/Infants With Serious Adverse Events (SAEs)21126
PrimaryNumber of Maternal Participants With Treatment-emergent Adverse Events of Special Interest (TEAESIs)

Number of maternal participants with TEAESIs were reported. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. All infections requiring anti-infective (that is, oral or intravenous antibacterial, antiviral, or antifungal) treatment and with hypoalbuminemia greater than or equal to (\>=) Grade 3 (less than \[\<\]20 gram per liter \[g/L\] by National Cancer Institute of Common Terminology Criteria for Adverse Events (NCI CTCAE) Version 5.0 criteria were considered an AESI for maternal participants. TEAE was defined as any event occurring after the initiation of the first infusion of nipocalimab.

Time frame:
From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)
Reported as:
Count of participants · Participants
Number of Maternal Participants With Treatment-emergent Adverse Events of Special Interest (TEAESIs)
ParticipantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Infections: Treatment with Oral /Intravenous11125
Hypoalbuminemia <20 g/L00000
Overall AESIs11125
PrimaryNumber of Neonates/Infants With Adverse Events of Special Interest (AESIs)

Number of neonates/infants with TEAESIs were reported. An AE was any unfavorable and unintended sign (example, an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. All infections requiring anti-infective (that is, oral or intravenous antibacterial, antiviral, or antifungal) treatment, unexpected/unusual childhood illnesses and Immunoglobulin G (IgG) concentrations \<200 milligrams per deciliter (mg/dL) at Week 24 through Week 47 or \<300 mg/dL at Week 48 through Week 96 were considered an AESI for neonates and infants.

Time frame:
From birth (PP Day 0) up to PP Week 96
Reported as:
Count of participants · Participants
Number of Neonates/Infants With Adverse Events of Special Interest (AESIs)
ParticipantsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
IgG Concentrations <200 mg/dL12003
Infections: Treatment with Oral /Intravenous01012
Unexpected/Unusual Childhood Illnesses00000
Overall AESI12014
PrimaryMaternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at Baseline

Absolute value of ECG parameter - mean ventricular rate at baseline in maternal participants was reported. Electrocardiogram assessments included comments on whether the tracings were normal or abnormal, rhythm, presence of arrhythmia or conduction defects, morphology, any evidence of myocardial infarction, or ST segment, T Wave, and U Wave abnormalities.

Time frame:
Baseline (GA Week 14)
Reported as:
Mean · Beats per minute
Maternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at Baseline
Beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at Baseline77.0 ± 10.5877.5 ± 3.5463.0 ± 5.3576.3 ± 8.4272.5 ± 9.41
PrimaryMaternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at GA Week 36

Absolute value of ECG parameter - mean ventricular rate at GA Week 36 in maternal participants was reported. Electrocardiogram assessments included comments on whether the tracings were normal or abnormal, rhythm, presence of arrhythmia or conduction defects, morphology, any evidence of myocardial infarction, or ST segment, T Wave, and U Wave abnormalities.

Time frame:
GA Week 36
Reported as:
Mean · Beats per minute
Maternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at GA Week 36
Beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Electrocardiogram (ECG) Parameter - Mean Ventricular Rate at GA Week 3689.0 ± NA77.0 ± 21.2180.7 ± 7.5177.0 ± 21.2179.9 ± 12.71
PrimaryMaternal Participants: Change From Baseline in ECG Parameter- Mean Ventricular Rate

Change from baseline in ECG parameter- mean ventricular rate in maternal participants was reported. Electrocardiogram assessments included comments on whether the tracings were normal or abnormal, rhythm, presence of arrhythmia or conduction defects, morphology, any evidence of myocardial infarction, or ST segment, T Wave, and U Wave abnormalities.

Time frame:
Baseline (GA Week 14) and GA Week 36
Reported as:
Mean · Beats per minute
Maternal Participants: Change From Baseline in ECG Parameter- Mean Ventricular Rate
Beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Change From Baseline in ECG Parameter- Mean Ventricular Rate8.0 ± NA-0.5 ± 24.7516.7 ± 7.378.0 ± 22.639.1 ± 15.08
PrimaryNumber of Maternal Participants With Treatment-emergent (TE) Clinically Important Laboratory and Biomarker Immunoglobulin G (IgG) Values Over Time

Laboratory parameters included hematology, chemistry, blood Lipids panel, and Immunoglobulin G (IgG) parameters. TEAE was defined as any event occurring after the initiation of the first infusion of nipocalimab. Here, HDL: high-density lipoprotein, LDL: low-density lipoprotein. The during-pregnancy value of albumin \<20 g/L was from a local laboratory and was \>=20 g/L when analyzed at the central laboratory for the same time point.

Time frame:
From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)
Reported as:
Count of participants · Participants
Number of Maternal Participants With Treatment-emergent (TE) Clinically Important Laboratory and Biomarker Immunoglobulin G (IgG) Values Over Time
ParticipantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
During pregnancy: Cholesterol >9.025 millimoles per liter (mmol/L)12328
During pregnancy: LDL >5.793 mmol/L—0123
During pregnancy: HDL Cholesterol <1.2413 mmol/L—0000
During pregnancy: Triglycerides >5.114 mmol/L00112
During pregnancy: Albumin <20 grams per Liter (g/L)00011
During pregnancy: Immunoglobulin G <1 g/L10102
Post Birth: Cholesterol >5.172 mmol/L324211
Post Birth: LDL >2.586 mmol/L—1236
Post Birth: HDL <1.0344 mmol/L—0101
Post Birth: Triglycerides >1.6935 mmol/L11327
Post Birth: Albumin <20 g/L00000
Post Birth: Immunoglobulin G <1 g/L00000
PrimaryNumber of Neonates or Infants With Clinically Important Laboratory and Biomarker Immunoglobulin G (IgG) Values Over Time

Laboratory parameters included total bilirubin and biomarker included immunoglobulin G (IgG).

Time frame:
From Birth (PP Day 0) up to PP Week 96
Reported as:
Count of participants · Participants
Number of Neonates or Infants With Clinically Important Laboratory and Biomarker Immunoglobulin G (IgG) Values Over Time
ParticipantsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Total Bilirubin >136.8 mmol/L11338
Immunoglobulin G < 1 g/L10001
Immunoglobulin G < 2 g/L224210
PrimaryMaternal Participants: Absolute Value of Vital Signs - Body Temperature at Baseline

Absolute value of vital signs - body temperature at baseline in maternal participants was reported.

Time frame:
Baseline (GA Week 14)
Reported as:
Mean · Degree Celsius
Maternal Participants: Absolute Value of Vital Signs - Body Temperature at Baseline
Degree CelsiusGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Body Temperature at Baseline36.6 ± 0.137.0 ± 0.537.2 ± 0.536.8 ± 0.836.9 ± 0.6
PrimaryMaternal Participants: Absolute Value of Vital Signs - Body Temperature at GA Week 36

Absolute value of vital signs - body temperature at GA Week 36 in maternal participants was reported.

Time frame:
GA Week 36
Reported as:
Mean · Degree Celsius
Maternal Participants: Absolute Value of Vital Signs - Body Temperature at GA Week 36
Degree CelsiusGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Body Temperature at GA Week 3636.7 ± NA36.8 ± 0.037.1 ± 0.536.0 ± NA36.8 ± 0.5
PrimaryMaternal Participants: Absolute Value of Vital Signs - Body Temperature at PP Week 24

Absolute value of vital signs - body temperature at PP Week 24 in maternal participants was reported.

Time frame:
PP Week 24
Reported as:
Mean · Degree Celsius
Maternal Participants: Absolute Value of Vital Signs - Body Temperature at PP Week 24
Degree CelsiusGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Body Temperature at PP Week 2436.5 ± 0.136.8 ± 0.336.8 ± 0.336.7 ± 0.536.7 ± 0.3
PrimaryMaternal Participants: Change From Baseline in Vital Sign - Body Temperature

Change from baseline in vital signs- body temperature in maternal participants was reported.

Time frame:
Baseline (GA Week 14), GA Week 36, and PP Week 24
Reported as:
Mean · Degree Celsius
Maternal Participants: Change From Baseline in Vital Sign - Body Temperature
Degree CelsiusGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
GA Week 360.0 ± NA-0.2 ± 0.5-0.2 ± 0.00.2 ± NA-0.1 ± 0.3
PP Week 24-0.1 ± 0.1-0.2 ± 0.2-0.5 ± 0.7-0.1 ± 1.0-0.2 ± 0.7
PrimaryMaternal Participants: Absolute Value of Vital Signs - Respiratory Rate at Baseline

Absolute value of vital signs -respiratory rate at baseline in maternal participants was reported.

Time frame:
Baseline (GA Week 14)
Reported as:
Mean · breaths per minute
Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at Baseline
breaths per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at Baseline17.0 ± 1.719.0 ± 1.415.5 ± 3.418.0 ± 2.817.2 ± 2.7
PrimaryMaternal Participants: Absolute Value of Vital Signs - Respiratory Rate at GA Week 36

Absolute value of vital signs -respiratory rate at GA Week 36 in maternal participants was reported.

Time frame:
GA Week 36
Reported as:
Mean · Breaths per minute
Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at GA Week 36
Breaths per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at GA Week 3620.0 ± NA18.0 ± 0.016.3 ± 3.217.0 ± NA17.4 ± 2.3
PrimaryMaternal Participants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 24

Absolute value of vital signs - respiratory rate at PP Week 24 in maternal participants was reported.

Time frame:
PP Week 24
Reported as:
Mean · Breaths per minute
Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 24
Breaths per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 2416.5 ± 2.115.5 ± 2.115.8 ± 3.917.3 ± 3.616.3 ± 3.0
PrimaryMaternal Participants: Change From Baseline in Vital Sign - Respiratory Rate

Change from baseline in vital signs- respiratory rate in maternal participants was reported.

Time frame:
Baseline (GA Week 14), GA Week 36, and PP Week 24
Reported as:
Mean · Breaths per minute
Maternal Participants: Change From Baseline in Vital Sign - Respiratory Rate
Breaths per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
GA Week 362.0 ± NA-1.0 ± 1.41.0 ± 1.01.0 ± NA0.6 ± 1.4
PP Week 240.0 ± 0.0-3.5 ± 0.70.3 ± 1.3-0.8 ± 3.0-0.8 ± 2.2
PrimaryMaternal Participants: Absolute Value of Vital Signs - Pulse Rate at Baseline

Absolute value of vital signs - pulse rate at baseline in maternal participants was reported.

Time frame:
Baseline (GA Week 14)
Reported as:
Mean · Beats per minute
Maternal Participants: Absolute Value of Vital Signs - Pulse Rate at Baseline
Beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Pulse Rate at Baseline81.3 ± 8.781.0 ± 8.567.5 ± 4.273.5 ± 8.974.6 ± 8.8
PrimaryMaternal Participants: Absolute Value of Vital Signs - Pulse Rate at GA Week 36

Absolute value of vital signs -pulse rate at GA Week 36 in maternal participants was reported.

Time frame:
GA Week 36
Reported as:
Mean · beats per minute
Maternal Participants: Absolute Value of Vital Signs - Pulse Rate at GA Week 36
beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Pulse Rate at GA Week 3688.0 ± NA95.0 ± 17.084.0 ± 9.5100.0 ± NA90.0 ± 11.0
PrimaryMaternal Participants: Absolute Value of Vital Signs -Pulse Rate at PP Week 24

Absolute value of vital signs -pulse rate at PP Week 24 in maternal participants was reported.

Time frame:
PP Week 24
Reported as:
Mean · Beats per minute
Maternal Participants: Absolute Value of Vital Signs -Pulse Rate at PP Week 24
Beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs -Pulse Rate at PP Week 2473.0 ± 2.875.0 ± 4.269.8 ± 10.277.8 ± 4.173.8 ± 6.9
PrimaryMaternal Participants: Change From Baseline in Vital Sign - Pulse Rate

Change from baseline in vital signs -pulse rate in maternal participants was reported.

Time frame:
Baseline (GA Week 14), GA Week 36, and PP Week 24
Reported as:
Mean · Beats per minute
Maternal Participants: Change From Baseline in Vital Sign - Pulse Rate
Beats per minuteGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
GA Week 36-3.0 ± NA14.0 ± 8.515.0 ± 6.129.0 ± NA14.1 ± 10.5
PP Week 24-3.5 ± 6.4-6.0 ± 4.22.3 ± 8.54.3 ± 11.40.6 ± 8.8
PrimaryMaternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Baseline

Absolute value of vital signs - SBP and DBP at baseline in maternal participants was reported.

Time frame:
Baseline (GA Week 14)
Reported as:
Mean · Millimeter of mercury
Maternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Baseline
Millimeter of mercuryGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
SBP112.0 ± 11.3100.5 ± 3.5102.3 ± 4.6104.8 ± 12.4105.0 ± 9.2
DBP68.7 ± 3.559.5 ± 3.563.3 ± 6.964.5 ± 10.864.3 ± 7.3
PrimaryMaternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at GA Week 36

Absolute value of vital signs -SBP and DBP at GA Week 36 in maternal participants was reported.

Time frame:
GA Week 36
Reported as:
Mean · Millimeter of mercury (mmHg)
Maternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at GA Week 36
Millimeter of mercury (mmHg)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
SBP134.0 ± NA105.0 ± 8.5107.3 ± 9.6110.5 ± 7.8110.9 ± 11.7
DBP70.0 ± NA73.0 ± 5.766.3 ± 4.269.0 ± 5.769.1 ± 4.7
PrimaryMaternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 24

Absolute value of vital signs - SBP and DBP at PP Week 24 in maternal participants was reported.

Time frame:
PP Week 24
Reported as:
Mean · Millimeters of mercury
Maternal Participants: Absolute Value of Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 24
Millimeters of mercuryGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
SBP117.5 ± 14.8110.5 ± 14.8112.3 ± 4.0118.8 ± 9.9115.0 ± 9.2
DBP73.5 ± 10.669.5 ± 6.471.3 ± 6.271.8 ± 1.771.5 ± 5.2
PrimaryMaternal Participants: Change From Baseline in Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)

Change from baseline in vital signs -SBP and DBP in maternal participants were reported.

Time frame:
Baseline (GA Week 14), GA Week 36, and PP Week 24
Reported as:
Mean · Millimeters of mercury
Maternal Participants: Change From Baseline in Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)
Millimeters of mercuryGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
SBP: GA Week 3615.0 ± NA4.5 ± 4.95.0 ± 13.05.0 ± 22.66.1 ± 11.7
SBP: PP Week 249.0 ± 1.410.0 ± 11.310.0 ± 4.214.0 ± 7.011.2 ± 5.9
DBP: GA Week 36-2.0 ± NA13.5 ± 2.13.0 ± 9.86.5 ± 23.35.9 ± 11.6
DBP: PP Week 246.5 ± 7.810.0 ± 2.88.0 ± 10.27.3 ± 11.87.8 ± 8.6
PrimaryMaternal Participants: Absolute Value of Vital Signs - Body Weight at Baseline

Absolute value of vital signs - body weight at baseline in maternal participants was reported.

Time frame:
Baseline (GA Week 14)
Reported as:
Mean · Kilograms
Maternal Participants: Absolute Value of Vital Signs - Body Weight at Baseline
KilogramsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Body Weight at Baseline76.0 ± 29.764.0 ± 12.771.8 ± 8.875.8 ± 18.072.8 ± 16.7
PrimaryMaternal Participants: Absolute Value of Vital Signs - Body Weight at GA Week 36

Absolute value of vital signs -body weight at GA Week 36 in maternal participants was reported.

Time frame:
GA Week 36
Reported as:
Mean · Kilograms
Maternal Participants: Absolute Value of Vital Signs - Body Weight at GA Week 36
KilogramsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Body Weight at GA Week 36130.6 ± NA77.6 ± 15.680.8 ± 7.987.3 ± 14.987.8 ± 19.9
PrimaryMaternal Participants: Absolute Value of Vital Signs - Body Weight at PP Week 24

Absolute value of vital signs included body weight at PP Week 24 in maternal participants was reported.

Time frame:
PP Week 24
Reported as:
Mean · Kilograms
Maternal Participants: Absolute Value of Vital Signs - Body Weight at PP Week 24
KilogramsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Maternal Participants: Absolute Value of Vital Signs - Body Weight at PP Week 2460.1 ± 8.069.5 ± 13.471.3 ± 11.178.0 ± 20.171.4 ± 14.3
PrimaryMaternal Participants: Change From Baseline in Vital Sign - Body Weight

Change from baseline in vital signs- body weight in maternal participants was reported.

Time frame:
Baseline (GA Week 14), GA Week 36, and PP Week 24
Reported as:
Mean · Kilograms
Maternal Participants: Change From Baseline in Vital Sign - Body Weight
KilogramsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
GA Week 3620.6 ± NA13.6 ± 3.08.6 ± 2.97.7 ± 1.411.1 ± 5.0
PP Week 241.0 ± 2.45.6 ± 0.8-0.5 ± 4.62.2 ± 2.91.7 ± 3.6
PrimaryNeonates/Infants: Absolute Value in Vital Signs - Body Temperature at Baseline

Absolute value in vital signs parameter -body temperature at baseline was reported for all neonates/infants.

Time frame:
Baseline (PP Day 0)
Reported as:
Mean · Degree Celsius
Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at Baseline
Degree CelsiusGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at Baseline36.7 ± 0.436.8 ± 0.136.5 ± 0.136.7 ± 0.136.7 ± 0.2
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Body Temperature at PP Week 1

Absolute value of vital signs parameter -body temperature at PP Week 1 was reported for all neonates/infants.

Time frame:
PP Week 1
Reported as:
Mean · Degree Celsius
Neonates/Infants: Absolute Value of Vital Signs - Body Temperature at PP Week 1
Degree CelsiusGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Body Temperature at PP Week 137.1 ± 0.336.9 ± NA36.8 ± 0.137.1 ± 0.237.0 ± 0.2
PrimaryNeonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 4

Absolute value in vital signs parameter - body temperature at PP Week 4 was reported for all neonates/infants.

Time frame:
PP Week 4
Reported as:
Mean · Degree Celsius
Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 4
Degree CelsiusGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 436.8 ± 0.537.1 ± NA37.0 ± 0.537.2 ± 0.137.0 ± 0.4
PrimaryNeonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 24

Absolute value in vital signs parameter -body temperature at PP Week 24 was reported for all neonates/infants.

Time frame:
PP Week 24
Reported as:
Mean · Degree Celsius
Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 24
Degree CelsiusGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value in Vital Signs - Body Temperature at PP Week 2436.5 ± 0.336.5 ± NA37.1 ± 0.437.5 ± 0.537.0 ± 0.5
PrimaryNeonates/Infants: Change From Baseline in Vital Signs - Body Temperature

Change from baseline in vital signs- body temperature were reported for all neonates/infants.

Time frame:
Baseline (PP Day 0), PP Weeks 1, 4, and 24
Reported as:
Mean · Degree Celsius
Neonates/Infants: Change From Baseline in Vital Signs - Body Temperature
Degree CelsiusGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
PP Week 10.2 ± 0.40.1 ± NA0.3 ± 0.10.3 ± NA0.2 ± 0.2
PP Week 40.2 ± 0.10.4 ± NA0.6 ± 0.60.6 ± 0.10.5 ± 0.4
PP Week 24-0.4 ± 0.4-0.2 ± NA0.6 ± 0.51.0 ± 0.60.3 ± 0.7
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Body Weight at Baseline

Absolute value of vital signs parameter- body weight at baseline was reported for all neonates/infants.

Time frame:
Baseline (PP Day 0)
Reported as:
Mean · Kilograms
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at Baseline
KilogramsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at Baseline2.4 ± 1.62.8 ± 0.42.8 ± 0.22.8 ± 0.42.7 ± 0.7
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 1

Absolute value of vital signs parameter - body weight at PP Week 1 was reported for all neonates/infants.

Time frame:
PP Week 1
Reported as:
Mean · Kilograms
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 1
KilogramsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 11.6 ± 1.12.8 ± 0.52.7 ± 0.22.6 ± 0.32.5 ± 0.6
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 4

Absolute value of vital signs parameter - body weight at PP Week 4 was reported for all neonates/infants.

Time frame:
PP Week 4
Reported as:
Mean · Kilograms
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 4
KilogramsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 42.6 ± 1.33.6 ± 1.13.4 ± 0.13.7 ± 0.73.3 ± 0.8
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 24

Absolute value of vital signs parameter - body weight at PP Week 24 was reported for all neonates/infants.

Time frame:
PP Week 24
Reported as:
Mean · Kilograms
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 24
KilogramsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Body Weight at PP Week 246.4 ± 1.47.4 ± 1.67.6 ± 1.08.1 ± 0.67.4 ± 1.2
PrimaryNeonates/Infants: Change From Baseline in Vital Signs -Body Weight

Change from baseline in vital signs - body weight were reported for all neonates/infants.

Time frame:
Baseline (PP Day 0), PP Weeks 1, 4, and 24
Reported as:
Mean · Kilograms
Neonates/Infants: Change From Baseline in Vital Signs -Body Weight
KilogramsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
PP Week 1-0.1 ± 0.00.0 ± 0.1-0.1 ± 0.1-0.1 ± 0.1-0.1 ± 0.1
PP Week 40.2 ± 0.30.8 ± 0.70.6 ± 0.40.9 ± 0.30.6 ± 0.4
PP Week 244.0 ± 0.34.5 ± 1.24.8 ± 1.15.3 ± 0.84.7 ± 0.9
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at Baseline

Absolute value of vital signs parameter -respiratory rate at baseline was reported for all neonates/infants.

Time frame:
Baseline (PP Day 0)
Reported as:
Mean · Breaths per minute
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at Baseline
Breaths per minuteGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at Baseline39.0 ± 7.147.0 ± 2.842.0 ± 5.249.5 ± 17.743.9 ± 8.1
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 1

Absolute value of vital signs parameter - respiratory rate at PP Week 1 was reported for all neonates/infants.

Time frame:
PP Week 1
Reported as:
Mean · Breaths per minute
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 1
Breaths per minuteGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 136.0 ± 17.052.0 ± NA35.3 ± 1.254.0 ± 15.642.3 ± 12.7
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 4

Absolute value of vital signs parameter - respiratory rate at PP Week 4 was reported for all neonates/infants.

Time frame:
PP Week 4
Reported as:
Mean · Breaths per minute
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 4
Breaths per minuteGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 469.0 ± 19.868.0 ± NA46.5 ± 5.540.0 ± NA54.0 ± 14.9
PrimaryNeonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 24

Absolute value of vital signs parameter- respiratory rate at PP Week 24 was reported for all neonates/infants.

Time frame:
PP Week 24
Reported as:
Mean · Breaths per minute
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 24
Breaths per minuteGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Neonates/Infants: Absolute Value of Vital Signs - Respiratory Rate at PP Week 2429.0 ± 9.932.0 ± NA45.3 ± 12.335.0 ± 7.837.6 ± 11.1
PrimaryNeonates/Infants: Change From Baseline in Vital Signs - Respiratory Rate

Change from baseline in vital signs -respiratory rate was reported for all neonates/infants.

Time frame:
Baseline (PP Day 0), PP Weeks 1, 4, and 24
Reported as:
Mean · breaths per minute
Neonates/Infants: Change From Baseline in Vital Signs - Respiratory Rate
breaths per minuteGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
PP Week 1-10.0 ± NA3.0 ± NA-7.3 ± 7.06.0 ± NA-3.8 ± 8.0
PP Week 430.0 ± 26.923.0 ± NA4.5 ± 8.43.0 ± NA13.0 ± 16.9
PP Week 24-12.0 ± NA-13.0 ± NA3.3 ± 16.0-16.5 ± 27.6-5.6 ± 17.6
PrimaryNeonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Baseline

Absolute value of vital signs parameter - SBP and DBP at baseline were reported for all neonates/infants.

Time frame:
Baseline (PP Day 0)
Reported as:
Mean · Millimeters of mercury
Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at Baseline
Millimeters of mercuryGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
SBP73.7 ± 7.4—61.5 ± 19.161.5 ± 4.966.7 ± 11.2
DBP39.0 ± 2.6—32.0 ± 5.731.5 ± 7.834.9 ± 5.7
PrimaryNeonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 1

Absolute value of vital signs parameter - SBP and DBP at PP Week 1 were reported for all neonates/infants.

Time frame:
PP Week 1
Reported as:
Mean · Millimeters of mercury
Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 1
Millimeters of mercuryGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
SBP62.5 ± 2.1—75.0 ± NA65.0 ± NA66.3 ± 6.1
DBP50.0 ± 1.4—39.0 ± NA31.0 ± NA42.5 ± 9.3
PrimaryNeonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 4

Absolute value of vital signs parameter -SBP and DBP at PP Week 4 were reported for all neonates/infants.

Time frame:
PP Week 4
Reported as:
Mean · Millimeters of mercury
Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 4
Millimeters of mercuryGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
SBP61.0 ± NA—76.0 ± NA98.0 ± 4.283.3 ± 18.3
DBP31.0 ± NA—30.0 ± NA59.0 ± 11.344.8 ± 17.7
PrimaryNeonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 24

Absolute value of vital signs parameter -SBP and DBP at PP Week 24 were reported for all neonates/infants.

Time frame:
PP Week 24
Reported as:
Mean · Millimeters of mercury
Neonates/Infants: Absolute Value of Vital Sign - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) at PP Week 24
Millimeters of mercuryGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
SBP101.0 ± NA—113.0 ± 36.8103.5 ± 9.2106.8 ± 19.8
DBP68.0 ± NA—92.5 ± 26.258.0 ± 9.973.8 ± 22.4
PrimaryNeonates/Infants: Change From Baseline in Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)

Change from baseline in vital signs- SBP and DBP were reported for all neonates/infants.

Time frame:
Baseline (PP Day 0), PP Weeks 1, 4, and 24
Reported as:
Mean · Millimeters of mercury
Neonates/Infants: Change From Baseline in Vital Signs - Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)
Millimeters of mercuryGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
SBP: PP Week 1-7.0 ± 4.2—27.0 ± NA0.0 ± NA3.3 ± 16.4
SBP: PP Week 4-10.0 ± NA—28.0 ± NA36.5 ± 9.222.8 ± 22.8
SBP: PP Week 2433.0 ± NA—39.0 ± NA52.0 ± NA41.3 ± 9.7
DBP: PP Week 111.5 ± 4.9—11.0 ± NA-6.0 ± NA7.0 ± 9.1
DBP: PP Week 4-10.0 ± NA—2.0 ± NA27.5 ± 19.111.8 ± 21.8
DBP: PP Week 2432.0 ± NA—46.0 ± NA39.0 ± NA39.0 ± 7.0
PrimaryPercentage of Maternal Participants With Intrauterine Growth Restriction (IUGR) Based on Ultrasound Assessments

Percentage of maternal participants with intrauterine growth restriction (IUGR) based on ultrasound assessments and guidelines from American College of Obstetricians and Gynecologists, and Society for Maternal-Fetal Medicine was reported. This outcome measure provided the incidence of with IUGR at delivery. IUGR is defined as weight below the 10th percentile for gestational age based on the World Health Organization (WHO) fetal growth curve.

Time frame:
Baseline (GA Week 14), GA Weeks 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Intrauterine Growth Restriction (IUGR) Based on Ultrasound Assessments
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Baseline0—000
GA Week 1600000
GA Week 1800000
GA Week 2050.00009.1
GA Week 2200000
GA Week 2400000
GA Week 26050.0008.3
GA Week 28050.0008.3
GA Week 3000000
GA Week 320100.00010.0
GA Week 3400000
GA Week 3600000
PrimaryPercentage of Maternal Participants With Abnormal Amniotic Fluid Values: Amniotic Fluid Index (AFI) at Baseline

Percentage of maternal participants with abnormal amniotic fluid values: amniotic fluid index (AFI) at baseline was reported. The amniotic fluid volume abnormality was categorized as an AFI \<5 centimeter (cm) or \>24 cm.

Time frame:
Baseline (GA Week 14)
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: Amniotic Fluid Index (AFI) at Baseline
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: Amniotic Fluid Index (AFI) at Baseline050.050.0025.0
PrimaryPercentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 26

Percentage of maternal participants with abnormal amniotic fluid values: AFI at GA Week 26 was reported. The amniotic fluid volume abnormality was categorized as an AFI \<5 cm or \>24 cm.

Time frame:
GA Week 26
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 26
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 260—25.0012.5
PrimaryPercentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 36

Percentage of maternal participants with abnormal amniotic fluid values: AFI at GA Week 36 was reported. The amniotic fluid volume abnormality was categorized as an AFI \<5 cm or \>24 cm.

Time frame:
GA Week 36
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 36
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: AFI at GA Week 360033.3014.3
PrimaryPercentage of Maternal Participants With Abnormal Amniotic Fluid Values: Maximum Vertical Pocket (MVP) at Baseline

Percentage of maternal participants with abnormal amniotic fluid values: maximum vertical pocket (MVP) at baseline was reported. The amniotic fluid volume abnormality was categorized as MVP \<2 cm or \>8 cm.

Time frame:
From Baseline (GA Week 14)
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: Maximum Vertical Pocket (MVP) at Baseline
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: Maximum Vertical Pocket (MVP) at Baseline00000
PrimaryPercentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 18

Percentage of maternal participants with abnormal amniotic fluid values: MVP at GA Week 18 was reported. The amniotic fluid volume abnormality was categorized as MVP \<2 cm or \>8 cm.

Time frame:
GA Week 18
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 18
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 1800025.08.3
PrimaryPercentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 22

Percentage of maternal participants with abnormal amniotic fluid values: MVP at GA Week 22 was reported. The amniotic fluid volume abnormality was categorized as MVP \<2 cm or \>8 cm.

Time frame:
GA Week 22
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 22
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Abnormal Amniotic Fluid Values: MVP at GA Week 2200000
PrimaryNumber of Neonates/Infants With Appearance, Pulse, Grimace Response, Activity, Respiration (Apgar) Score

Number of neonates/infants with Apgar score from 1 to 10 minutes of life were reported. The system provided a standardized assessment for infants after delivery. The Apgar score comprises five components: 1) color, 2) heart rate, 3) reflexes, 4) muscle tone, and 5) respiration, each of which is given a score of 0, 1, or 2. The score is reported at 1 minute and 5 minutes after birth for all infants, and at 5-minute intervals thereafter until 20 minutes for infants with a score less than 7. This is using an Apgar scale which ranges from minimum total score of 0 and maximum total score of 10, with higher score representing a better outcome.

Time frame:
1, 5, and 10 minutes after birth at PP Day 0
Reported as:
Count of participants · Participants
Number of Neonates/Infants With Appearance, Pulse, Grimace Response, Activity, Respiration (Apgar) Score
ParticipantsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
1 minute: <5 Score10012
1 minute: 5-7 Score00101
1 minute: 8-10 Score22329
5 minute: <5 Score00000
5 minute: 5-7 Score00011
5 minute: 8-10 Score324211
10 minute: <5 Score00000
10 minute: 5-7 Score00011
10 minute: 8-10 Score12216
PrimaryNumber of Maternal Participants With Concomitant Medications and Therapies

Number of maternal participants with concomitant medications and therapies were reported.

Time frame:
From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)
Reported as:
Count of participants · Participants
Number of Maternal Participants With Concomitant Medications and Therapies
ParticipantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Number of Maternal Participants With Concomitant Medications and Therapies324413
PrimaryNumber of Neonates/Infants With Concomitant Medications and Therapies

Number of neonates/infants with concomitant medications and therapies were reported.

Time frame:
From birth (PP Day 0) up to PP Week 96
Reported as:
Count of participants · Participants
Number of Neonates/Infants With Concomitant Medications and Therapies
ParticipantsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Number of Neonates/Infants With Concomitant Medications and Therapies324312
PrimaryPercentage of Maternal Participants With Live Birth at or After Gestational Age (GA) Week 32 and Without an Intrauterine Transfusion (IUT) Throughout Their Entire Pregnancies

Percentage of maternal participants with live birth at or after GA Week 32 and without an IUT throughout their entire pregnancies were reported.

Time frame:
From baseline (GA Week 14) up to GA Week 37
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Live Birth at or After Gestational Age (GA) Week 32 and Without an Intrauterine Transfusion (IUT) Throughout Their Entire Pregnancies
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kgTAWAll Maternal Participants
Percentage of Maternal Participants With Live Birth at or After Gestational Age (GA) Week 32 and Without an Intrauterine Transfusion (IUT) Throughout Their Entire Pregnancies33.3 (0.8 to 90.6)50.0 (1.3 to 98.7)75.0 (19.4 to 99.4)50.0 (6.8 to 93.2)53.8 (25.1 to 80.8)
SecondaryPercentage of Maternal Participants With Live Birth

Percentage of maternal participants with live birth were reported.

Time frame:
From baseline (GA Week 14) up to GA Week 37
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Live Birth
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Percentage of Maternal Participants With Live Birth1001001007592.3
SecondaryPercentage of Maternal Participants Without an Intrauterine Transfusion (IUT) Before Gestational Age (GA) Week 24

Percentage of maternal participants without an IUT before GA Week 24 were reported.

Time frame:
From baseline (GA Week 14) up to GA Week 24
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants Without an Intrauterine Transfusion (IUT) Before Gestational Age (GA) Week 24
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Percentage of Maternal Participants Without an Intrauterine Transfusion (IUT) Before Gestational Age (GA) Week 241001001007592.3
SecondaryMaternal Participants : Gestational Age (GA) at First Intrauterine Transfusion (IUT)

Gestational age (GA) at first IUT for maternal participants were reported.

Time frame:
From baseline (GA Week 14) up to GA Week 37
Reported as:
Median · weeks
Maternal Participants : Gestational Age (GA) at First Intrauterine Transfusion (IUT)
weeksGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Subjects
Maternal Participants : Gestational Age (GA) at First Intrauterine Transfusion (IUT)25 (24 to 25)28 (28 to 28)29 (29 to 29)27 (22 to 31)27 (22 to 31)
SecondaryMedian Number of Intrauterine Transfusion (IUT) Per Maternal Participant

Median number of intrauterine transfusion (IUT) per maternal participants were reported.

Time frame:
From baseline (GA Week 14) up to GA Week 37
Reported as:
Median · IUTs per maternal participant
Median Number of Intrauterine Transfusion (IUT) Per Maternal Participant
IUTs per maternal participantGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Median Number of Intrauterine Transfusion (IUT) Per Maternal Participant4 (3 to 5)5 (5 to 5)3 (3 to 3)1 (1 to 1)3 (1 to 5)
SecondaryFrequency of Intrauterine Transfusions (IUTs) on Maternal Participants

Frequency of intrauterine transfusions (IUTs) on maternal participants were reported. Frequency of IUTs was defined as total number of IUTs divided by the (date of delivery - date of first IUT +1)/7.

Time frame:
From baseline (GA Week 14) up to GA Week 37
Reported as:
Median · IUT/week
Frequency of Intrauterine Transfusions (IUTs) on Maternal Participants
IUT/weekGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Frequency of Intrauterine Transfusions (IUTs) on Maternal Participants0.52 (0.48 to 0.57)0.56 (0.56 to 0.56)0.43 (0.43 to 0.43)0.70 (0.64 to 0.78)0.56 (0.43 to 0.78)
SecondaryPercentage of Maternal Participants With Fetal Hydrops in Utero or Post Birth

Percentage of maternal participants with fetal hydrops in utero or post birth were reported.

Time frame:
From baseline (Gestational Age [GA] Week 14) up to PP Week 24 (up to 50 weeks)
Reported as:
Number · Percentage of maternal participants
Percentage of Maternal Participants With Fetal Hydrops in Utero or Post Birth
Percentage of maternal participantsGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Percentage of Maternal Participants With Fetal Hydrops in Utero or Post Birth0 (0.0 to 84.2)0 (0.0 to 84.2)0 (0.0 to 60.2)0 (0.0 to 60.2)0 (0.0 to 26.5)
SecondaryMaternal Participants: Gestational Age at Time of Delivery

Gestational age at time of delivery for maternal participants were reported.

Time frame:
From baseline (GA Week 14) up to GA Week 37
Reported as:
Median · Weeks
Maternal Participants: Gestational Age at Time of Delivery
WeeksGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Maternal Participants: Gestational Age at Time of Delivery36 (29 to 37)36 (35 to 37)36 (36 to 37)35 (23 to 37)36 (23 to 37)
SecondaryPercentage of Neonates Who Required Phototherapy

Percentage of neonates who required phototherapy were reported.

Time frame:
From birth (PP Day 0) up to PP Week 24
Reported as:
Number · Percentage of neonates
Percentage of Neonates Who Required Phototherapy
Percentage of neonatesGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Percentage of Neonates Who Required Phototherapy1005010010091.7
SecondaryPercentage of Neonates Who Required Exchange Transfusions

Percentage of neonates who required exchange transfusions were reported.

Time frame:
From birth (PP Day 0) up to PP Week 24
Reported as:
Number · Percentage of neonates
Percentage of Neonates Who Required Exchange Transfusions
Percentage of neonatesGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Percentage of Neonates Who Required Exchange Transfusions00033.38.3
SecondaryDuration of Postnatal Phototherapy Required by Neonates

Duration of postnatal phototherapy required by neonates were reported.

Time frame:
From birth (PP Day 0) up to PP Week 24
Reported as:
Median · hours
Duration of Postnatal Phototherapy Required by Neonates
hoursGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Duration of Postnatal Phototherapy Required by Neonates96.0 (84.00 to 301.07)46.68 (46.68 to 46.68)100.87 (12.00 to 173.95)86.98 (72.00 to 127.33)86.98 (12.00 to 301.07)
SecondaryPercentage of Neonates Who Required Simple Transfusions in the First 12 Weeks of Life

Percentage of neonates who required simple transfusions in the first 12 weeks of life were reported.

Time frame:
From birth (PP Day 0) up to PP Week 12
Reported as:
Number · Percentage of neonates
Percentage of Neonates Who Required Simple Transfusions in the First 12 Weeks of Life
Percentage of neonatesGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Maternal Participants
Percentage of Neonates Who Required Simple Transfusions in the First 12 Weeks of Life66.750.050.033.350.0
SecondaryNumber of Simple Transfusions Required by Neonate in the First 12 Weeks of Life

Number of simple transfusions required by neonate in the first 12 weeks of life were reported.

Time frame:
From birth (PP Day 0) up to PP Week 12
Reported as:
Median · Simple transfusions
Number of Simple Transfusions Required by Neonate in the First 12 Weeks of Life
Simple transfusionsGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Number of Simple Transfusions Required by Neonate in the First 12 Weeks of Life4.5 (3. to 6)4.0 (4 to 4)1.0 (1 to 1)1.0 (1 to 1)2.0 (1 to 6)
SecondaryMaternal Serum Unoccupied Neonatal Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes by Nipocalimab

Maternal serum unoccupied neonatal concentration of Participants Fc Receptor \[FcRn\] receptor occupancy (RO) in Monocytes by nipocalimab were reported.

Time frame:
Baseline (GA Week 14), GA Week 16, GA Week 36, PP Day 0, PP Week 4, and PP Week 24
Reported as:
Mean · percentage of receptors unoccupied
Maternal Serum Unoccupied Neonatal Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes by Nipocalimab
percentage of receptors unoccupiedGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
Baseline100.00 ± 0.000100.00 ± 0.000100.00 ± 0.000100.00 ± 0.000100.00 ± 0.000
GA Week 162.80 ± 0.3462.50 ± 1.5564.20 ± 3.816-0.15 ± 6.2762.12 ± 4.103
GA Week 3612.20 ± NA3.80 ± NA5.40 ± 1.8383.75 ± 1.2025.72 ± 3.420
PP Day 0126.75 ± 6.85921.00 ± 22.48668.83 ± 43.25339.30 ± 43.85660.67 ± 48.532
PP Week 4107.55 ± 68.943—130.78 ± 49.901121.55 ± 54.002122.44 ± 49.09
PP Week 2499.60 ± 5.09198.45 ± 15.486114.15 ± 28.333117.20 ± 29.816110.13 ± 23.549
SecondarySerum Unoccupied Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes of Neonate by Nipocalimab

Serum unoccupied FcRn RO in monocytes of neonate by Nipocalimab were reported.

Time frame:
From birth (PP Day 0) up to PP Week 24
Reported as:
Mean · percentage of receptors unoccupied
Serum Unoccupied Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes of Neonate by Nipocalimab
percentage of receptors unoccupiedGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Serum Unoccupied Concentration of Participants Fc Receptor [FcRn] Receptor Occupancy (RO) in Monocytes of Neonate by Nipocalimab118.20 ± NA70.60 ± 19.23380.87 ± 18.02974.50 ± 33.09381.38 ± 23.295
SecondaryMaternal Participants: Change From Baseline in Serum Concentration of Total Immunoglobulin G (IgG) and Subclasses (IgG1, IgG2, IgG3, IgG4), IgA, IgM, and IgE

Change from baseline in serum concentration of total immunoglobulin G (IgG) and subclasses (IgG1, IgG2, IgG3, IgG4), IgA, IgM, and IgE were reported.

Time frame:
IgG: Baseline (GA Week 14), GA Week 16, GA Week 36, birth (PP Day 0), PP Week 4, and PP Week 24; IgG1, IgG2, IgG3, IgG4, IgA, IgM, and IgE: baseline (GA Week 14), GA Week 36
Reported as:
Mean · grams/liter (g/L)
Maternal Participants: Change From Baseline in Serum Concentration of Total Immunoglobulin G (IgG) and Subclasses (IgG1, IgG2, IgG3, IgG4), IgA, IgM, and IgE
grams/liter (g/L)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWAll Maternal Participants
IgG: GA Week 16-8.12 ± 2.235-7.31 ± 0.813-6.51 ± 1.285-8.19 ± 1.018-7.52 ± 1.464
IgG: GA Week 36-7.52 ± 1.549-5.26 ± 2.574-5.83 ± 2.380-8.34 ± 1.305-6.72 ± 2.146
IgG: birth (PP Day 0)-0.40 ± 0.884-2.64 ± 0.148-2.45 ± 1.016-4.38 ± 2.771-2.78 ± 2.111
IgG: PP Week 41.88 ± 1.803—-0.17 ± 0.6381.10 ± 3.4550.75 ± 2.277
IgG: PP Week 242.56 ± 0.2552.02 ± 0.6221.34 ± 0.4112.61 ± 1.1012.08 ± 0.873
IgG1: GA Week 36-4.35 ± 1.386-3.94 ± 1.464-3.45 ± 1.421-5.46 ± 1.006-4.33 ± 1.356
IgG2: GA Week 36-2.48 ± 0.085-1.29 ± 0.629-1.91 ± 1.013-2.31 ± 1.192-2.02 ± 0.888
IgG3: GA Week 36-0.25 ± 0.045-0.23 ± 0.228-0.24 ± 0.195-0.38 ± 0.124-0.28 ± 0.151
IgG4: GA Week 36-0.39 ± 0.209-0.06 ± 0.045-0.13 ± 0.066-0.28 ± 0.140-0.21 ± 0.163
IgA: GA Week 360.17 ± 0.1630.11 ± 0.1910.20 ± 0.3820.05 ± 0.0150.13 ± 0.208
IgM: GA Week 360.01 ± 0.120-0.06 ± 0.0490.01 ± 0.072-0.12 ± 0.075-0.04 ± 0.087
IgE: GA Week 36-0.31 ± 0.4200.00 ± 0.0030.01 ± 0.0120.00 ± 0.086-0.06 ± 0.197
SecondaryNeonates/Infants: Change From Baseline in Serum Concentration of Total IgG, IgA, IgM, and IgE

Change from baseline in serum concentration of total IgG, IgA, IgM, and IgE were reported in neonates/infants were reported.

Time frame:
Baseline (PP Day 0), PP Weeks 4, 24, 96
Reported as:
Mean · grams/liter (g/L)
Neonates/Infants: Change From Baseline in Serum Concentration of Total IgG, IgA, IgM, and IgE
grams/liter (g/L)Group 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
IgG: PP Week 44.61 ± NA-2.16 ± NA0.37 ± 2.521-0.87 ± 0.5590.26 ± 2.594
IgG: PP Week 24-7.59 ± NA-0.09 ± NA0.78 ± 2.6751.68 ± NA-0.41 ± 3.723
IgG: PP Week 96—-1.41 ± NA5.55 ± 2.8664.62 ± 1.6834.08 ± 3.361
IgA: PP Week 40.00 ± NA—0.00 ± 0.0000.03 ± NA0.01 ± 0.015
IgA: PP Week 240.02 ± NA0.07 ± NA0.23 ± 0.127-0.87 ± NA0.15 ± 0.121
IgA: PP Week 96—0.28 ± NA0.47 ± 0.2970.29 ± 0.0350.36 ± 0.181
IgM: PP Week 40.10 ± NA—0.17 ± 0.0920.34 ± 0.0710.22 ± 0.125
IgM: PP Week 240.32 ± NA0.26 ± NA0.61 ± 0.0780.44 ± NA0.48 ± 0.166
IgM: PP Week 96—0.53 ± NA1.04 ± 0.0140.86 ± 0.3680.87 ± 0.278
IgE: PP Week 40.00 ± NA—0.00 ± 0.0070.00 ± 0.0000.00 ± 0.004
IgE: PP Week 240.01 ± NA0.00 ± NA0.03 ± 0.0590.02 ± NA0.02 ± 0.040
IgE: PP Week 96—0.02 ± NA0.02 ± 0.0080.03 ± 0.0270.02 ± 0.016
SecondarySerum Concentrations of Nipocalimab in Maternal Participants

Serum concentrations of Nipocalimab in maternal participants were reported.

Time frame:
Pre dose and post dose: GA Week 14 and GA Week 24; Birth (PP Day 0), PP Week 4 and PP Week 24
Reported as:
Mean · mcg/mL
Serum Concentrations of Nipocalimab in Maternal Participants
mcg/mLGroup 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAW
GA Week 14: Pre-dose0.00 ± 0.000.00 ± 0.000.00 ± 0.000.00 ± 0.00
GA Week 14: Post-dose726.00 ± 138.01577.00 ± 110.31947.75 ± 193.17928.50 ± 159.05
GA Week 24: Pre-dose58.25 ± 43.6371.15 ± 19.87197.25 ± 73.27205.00 ± 82.18
GA Week 24: Post-dose736.50 ± 101.12629.00 ± 90.511051.25 ± 196.491246.67 ± 202.32
PP Day 00.01 ± 0.02100.0 ± NA14.54 ± 25.16278.96 ± 547.41
PP Week 40.00 ± 0.00—0.00 ± 0.000.00 ± 0.00
PP Week 240.00 ± 0.000.00 ± 0.000.00 ± 0.000.00 ± 0.00
SecondaryPediatric Quality of Life Inventory (PedsQL) Total and Sub Scale Score in Neonates/Infants

The 45-item PedsQL infant Scales (ages 13-24 months) included physical functioning, physical symptoms, emotional functioning, social functioning, and cognitive functioning. Health summary score for psychosocial (sum of all items over number of items: emotional, social, cognitive functioning scales) and physical (sum of the items over number of items: physical functioning and symptoms scales), as well as a total score (sum of all items over number of items answered on all scales). Items were reverse-scored and linearly transformed to 0-100 scale (0=100, 1=75, 2=50, 3=25, 4=0). PedsQL a validated scale ranging from 0 -100, higher scores = a better quality of life.

Time frame:
PP Week 96
Reported as:
Mean · Score on a scale
Pediatric Quality of Life Inventory (PedsQL) Total and Sub Scale Score in Neonates/Infants
Score on a scaleGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Overall Total Score86.67 ± NA86.67 ± NA88.15 ± 13.9584.44 ± 6.2686.39 ± 8.35
Psychosocial Health Total Score78.85 ± NA88.46 ± NA86.86 ± 15.2177.88 ± 8.2282.69 ± 10.47
Physical Health Total Score97.37 ± NA84.21 ± NA89.91 ± 12.2393.42 ± 8.2291.45 ± 8.78
Physical Functioning Score100.00 ± NA88.89 ± NA90.74 ± 16.0496.30 ± 3.2193.75 ± 9.59
Physical Symptoms Score95.00 ± NA80.00 ± NA89.17 ± 10.1090.83 ± 13.7789.38 ± 10.07
Emotional Functioning Score62.50 ± NA95.83 ± NA81.25 ± 17.8070.83 ± 7.2276.82 ± 14.50
Social Functioning Score100.00 ± NA100.00 ± NA91.67 ± 14.4395.00 ± 8.6695.00 ± 9.64
Cognitive Functioning Score88.89 ± NA72.22 ± NA91.67 ± 14.4377.78 ± 12.1183.68 ± 12.90
SecondaryAges and Stages Questionnaires, Third Edition (ASQ-3) Total Domain Score in Neonates/Infants

The ASQ-3 assesses young child's (2-66 months) development based on age and included 6 questions in each area of child development: communication, gross motor, fine motor, problem solving, and personal-social skills. Parents answered either yes (10 points), sometimes (5 points) or not yet (0 points) to each question to complete ASQ-3 and each domain score could range from 0 to 60 points which higher score signifying stronger development.

Time frame:
At PP 6 month, PP 12 month, and PP 24 month
Reported as:
Mean · Score on a scale
Ages and Stages Questionnaires, Third Edition (ASQ-3) Total Domain Score in Neonates/Infants
Score on a scaleGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWAll Neonates and Infants
Communication Total Score: PP 6-month36.7 ± 5.840.0 ± 7.148.8 ± 6.351.7 ± 2.945.0 ± 8.0
Communication Total Score: PP 12-month45.0 ± 15.040.0 ± 7.143.3 ± 11.540.0 ± 10.042.3 ± 10.1
Communication Total Score: PP 24-month45.0 ± 15.037.5 ± 24.748.3 ± 2.926.7 ± 2.939.5 ± 13.9
Gross Motor Total Score: PP 6-month35.0 ± 10.022.5 ± 3.530.0 ± 9.125.0 ± 13.228.8 ± 9.8
Gross Motor Total Score: PP 12-month31.7 ± 17.640.0 ± 28.321.7 ± 18.923.3 ± 23.628.2 ± 19.4
Gross Motor Total Score: PP 24-month43.3 ± 17.660.0 ± 0.050.0 ± 8.756.7 ± 2.951.8 ± 11.0
Fine Motor Total Score: PP 6-Month26.7 ± 7.635.0 ± 21.243.8 ± 8.535.0 ± 18.035.8 ± 13.3
Fine Motor Total Score: PP 12-Month46.7 ± 2.957.5 ± 3.550.0 ± 0.036.7 ± 7.646.8 ± 8.4
Fine Motor Total Score: PP 24-Month50.0 ± 10.047.5 ± 3.555.0 ± 8.750.0 ± 5.050.9 ± 7.0
Problem Solving Total Score: PP 6-Month40.0 ± 10.037.5 ± 17.738.8 ± 11.126.7 ± 10.435.8 ± 11.4
Problem Solving Total Score: PP 12-Month23.3 ± 15.325.0 ± 7.141.7 ± 2.940.0 ± 8.733.2 ± 12.1
Problem Solving Total Score: PP 24-Month48.3 ± 7.637.5 ± 17.735.0 ± 8.741.7 ± 2.940.9 ± 9.4
Personal-Social Total Score: PP 6-Month43.3 ± 5.830.0 ± 7.140.0 ± 10.820.0 ± 13.234.2 ± 12.9
Personal-Social Total Score: PP 12-Month21.7 ± 2.937.5 ± 3.535.0 ± 5.030.0 ± 20.030.5 ± 11.3
Personal-Social Total Score: PP24-Month48.3 ± 10.445.0 ± 21.250.0 ± 13.250.0 ± 5.048.6 ± 10.5

Adverse events

Collected over All-cause mortality: Maternal: Screening (GA Week 8) up to PP Week 24 (up to 56 weeks), Neonates/Infants: Birth (PP Day 0) up to PP Week 96; SAE and other AEs: Maternal: From baseline (GA Week 14) up to PP Week 24 (up to 50 weeks), Neonates/Infants: From birth (PP Day 0) up to PP Week 96. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Group 1 (Maternal): 30mg/kg BLW0/3 (0%)2/3 (66.7%)3/3 (100%)
Group 2 (Maternal): 30 to45 mg/kg BLW0/2 (0%)0/2 (0%)2/2 (100%)
Group 3 (Maternal): 45mg/kg BLW0/4 (0%)1/4 (25%)4/4 (100%)
Group 4 (Maternal): 45mg/kg TAW0/4 (0%)2/4 (50%)4/4 (100%)
Group 1 (Neonates and Infants): 30 mg/kg BLW0/3 (0%)2/3 (66.7%)3/3 (100%)
Group 2 (Neonates and Infants): 30 to 45 mg/kg BLW0/2 (0%)1/2 (50%)2/2 (100%)
Group 3 (Neonates and Infants): 45 mg/kg BLW0/4 (0%)1/4 (25%)4/4 (100%)
Group 4 (Neonates and Infants): 45 mg/kg TAW0/3 (0%)2/3 (66.7%)3/3 (100%)
Most frequent serious events
Showing 10 of 13
Most frequent serious events
EventGroup 1 (Maternal): 30mg/kg BLWGroup 2 (Maternal): 30 to45 mg/kg BLWGroup 3 (Maternal): 45mg/kg BLWGroup 4 (Maternal): 45mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAW
Anaemia NeonatalBlood and lymphatic system disorders0/30/20/40/40/31/20/41/3
JaundiceHepatobiliary disorders0/30/20/40/40/31/21/40/3
Foetal AnaemiaBlood and lymphatic system disorders1/30/20/41/40/30/20/40/3
Foetal Heart Rate Deceleration AbnormalityCardiac disorders1/30/20/40/40/30/20/40/3
Hyperbilirubinaemia NeonatalHepatobiliary disorders0/30/20/40/41/30/20/40/3
Respiratory Syncytial Virus InfectionInfections and infestations0/30/20/40/40/30/20/41/3
Upper Respiratory Tract InfectionInfections and infestations0/30/20/40/40/30/20/41/3
Foetal Growth RestrictionPregnancy, puerperium and perinatal conditions1/30/20/40/40/30/20/40/3
Subchorionic HaematomaPregnancy, puerperium and perinatal conditions1/30/20/40/40/30/20/40/3
Neonatal Respiratory Distress SyndromeRespiratory, thoracic and mediastinal disorders0/30/20/40/41/30/20/41/3
Most frequent other events
Showing 10 of 111
Most frequent other events
EventGroup 1 (Maternal): 30mg/kg BLWGroup 2 (Maternal): 30 to45 mg/kg BLWGroup 3 (Maternal): 45mg/kg BLWGroup 4 (Maternal): 45mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAW
AnaemiaBlood and lymphatic system disorders1/30/21/41/43/30/21/40/3
NauseaGastrointestinal disorders0/32/21/41/40/30/20/40/3
Blood Immunoglobulin G DecreasedInvestigations1/30/20/40/41/32/21/41/3
Oedema PeripheralGeneral disorders2/31/21/42/40/30/20/40/3
PyrexiaGeneral disorders0/30/21/40/40/31/20/42/3
HyperbilirubinaemiaHepatobiliary disorders0/30/20/40/42/30/21/41/3
Anaemia NeonatalBlood and lymphatic system disorders0/30/20/40/40/31/20/41/3
ThrombocytopeniaBlood and lymphatic system disorders0/30/20/40/40/31/20/40/3
TachycardiaCardiac disorders0/31/20/40/40/30/20/40/3
OtorrhoeaEar and labyrinth disorders0/30/20/40/40/31/20/40/3

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWTotal
Mean38.7 ± 1.5337.0 ± 1.4138.3 ± 4.4330.8 ± 4.190 ± 00 ± 00 ± 00 ± 035.8 ± 4.76
Sex: Female, Male
Sex: Female, Male(Participants)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWTotal
Female3244310017
Male000001438
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWTotal
American Indian or Alaska Native000000000
Asian000000000
Native Hawaiian or Other Pacific Islander000000000
Black or African American000000000
White2244323323
More than one race000000101
Unknown or Not Reported100000001
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWTotal
Hispanic or Latino100010002
Not Hispanic or Latino2244224323
Region of Enrollment
Region of Enrollment(Participants)Group 1 (Maternal): 30 mg/kg BLWGroup 2 (Maternal): 30 to 45 mg/kg BLWGroup 3 (Maternal): 45 mg/kg BLWGroup 4 (Maternal): 45 mg/kg TAWGroup 1 (Neonates and Infants): 30 mg/kg BLWGroup 2 (Neonates and Infants): 30 to 45 mg/kg BLWGroup 3 (Neonates and Infants): 45 mg/kg BLWGroup 4 (Neonates and Infants): 45 mg/kg TAWTotal
Australia002100205
Belgium100010002
Germany000200024
Netherlands001100114
Sweden011001104
United Kingdom010001002
United States200020004
08

Study locations

19 sites
  • University of California San Francisco
    San Francisco, California 94143, United States
  • Columbia University Medical Center
    New York, New York 10032, United States
  • University of Cincinnati
    Cincinnati, Ohio 45267, United States
  • Oregon Health and Science University
    Portland, Oregon 97239, United States
  • University of Pittsburgh
    Pittsburgh, Pennsylvania 15232, United States
  • Dell Children's Medical Center of Central Texas
    Austin, Texas 78723, United States
  • University of Texas Health Science Center
    Houston, Texas 77030, United States
  • University of Utah
    Salt Lake City, Utah 84132, United States
  • Liverpool Hospital
    Sydney, 2170, Australia
  • Universitair Ziekenhuis Leuven
    Leuven, 3000, Belgium
  • British Columbia Children's Hospital
    Vancouver, British Columbia V6H 3N1, Canada
  • Mount Sinai Hospital
    Toronto, Ontario M5G 1X5, Canada
  • CHUM - Centre hospitalier universitaire de Montreal
    Montreal, Quebec H3T 1C5, Canada
  • Justus-Liebig-Universität Gießen, Kinderherzzentrum
    Giessen, 35392, Germany
  • Leiden University Medical Center
    Leiden, 2333 ZA, Netherlands
  • Hosp. Univ. San Cecilio
    Granada, 18016, Spain
  • Karolinska Universitetssjukhuset Huddinge
    Stockholm, SE-141 86, Sweden
  • Birmingham Children's Hospital
    Birmingham, B15 2TG, United Kingdom
  • University College London Hospitals NHSFT
    London, WC1E 6DB, United Kingdom
09

References and documents

Publications

  • de Winter DP, Moise KJ, Ling LE, Oepkes D, Tiblad E, Joanne Verweij EJT, Smoleniec J, Sachs UJ, Bein G, Kilby MD, Miller RS, Devlieger R, Streisand JB, Bredius RGM, Cafone J, Lam E, Leu JH, Mirza A, Nelson RM, Smith V, Schwartz LB, Tjoa ML, Saeed-Khawaja S, Komatsu Y, Lopriore E. Infant Immunity after Maternal Nipocalimab in Severe Hemolytic Disease of the Fetus and Newborn. NEJM Evid. 2026 Feb;5(2):EVIDoa2500097. doi: 10.1056/EVIDoa2500097. Epub 2026 Jan 27. PubMed 41591368 ↗
  • Moise KJ Jr, Ling LE, Oepkes D, Tiblad E, Verweij EJTJ, Lopriore E, Smoleniec J, Sachs UJ, Bein G, Kilby MD, Miller RS, Devlieger R, Audibert F, Emery SP, Markham K, Norton ME, Ocon-Hernandez O, Pandya P, Pereira L, Silver RM, Windrim R, Streisand JB, Leu JH, Mirza A, Smith V, Schwartz LB, Tjoa ML, Saeed-Khawaja S, Komatsu Y, Bussel JB; UNITY Study Group. Nipocalimab in Early-Onset Severe Hemolytic Disease of the Fetus and Newborn. N Engl J Med. 2024 Aug 8;391(6):526-537. doi: 10.1056/NEJMoa2314466. PubMed 39115062 ↗

Study documents

  • Study protocol · Mar 21, 2022
  • Statistical analysis plan · Dec 20, 2022

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03842189
Lead sponsor
Janssen Research & Development, LLC
Responsible party
Sponsor
First posted
Feb 15, 2019
Start date
Apr 5, 2018
Primary completion
Aug 5, 2024
Completion
Aug 5, 2024
Results posted
Jan 28, 2026
Last update
Mar 25, 2026

Study contacts

Janssen Research & Development, LLC Clinical Trial
study director · Janssen Research & Development, LLC

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.

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