A Global, Multicenter Study to Assess Maternal, Fetal and Infant Outcomes of Exposure to Palynziq® (Pegvaliase) During Pregnancy and Breastfeeding

{ "Observational Study of Palynziq (Pegvaliase) During Pregnancy and Breastfeeding", "This is an observational study looking at the effects of Palynziq (pegvaliase) on pregnant women with Phenylketonuria (PKU), a genetic condition, and on their babies. Researchers want to understand the outcomes for mothers and infants when the mother has been treated with Palynziq within two weeks before her last menstrual period. The study aims to track pregnancy outcomes and how babies develop over 10 years. Women who are pregnant and have been prescribed pegvaliase by their doctor can join. The study is currently unclear about its recruitment status and plans to enroll 50 participants.", "design": "This is an observational study, meaning researchers will watch and collect information without giving any specific treatment. It is a global, multicenter study planning to enroll 50 participants.", "commitments": "You would enroll through a call center, and data would be collected from your healthcare providers for at least 3 months before your last menstrual period. Data will also be collected during your pregnancy and your baby's first year of life, for a total participation of up to approximately 21 months.", "compensation": "Not stated in the trial record.", "follow_up": "Your pregnancy outcome and infant development will be measured for up to 10 years after the last menstrual period.", }

Study design
Not specified.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
Not specified.

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NCT05579548

A Global, Multicenter Study to Assess Maternal, Fetal and Infant Outcomes of Exposure to Palynziq® (Pegvaliase) During Pregnancy and Breastfeeding

Recruiting
Not specifiedAll AgesObservational
BioMarin Pharmaceutical
~50 participants
Updated 2026-03-24 on ClinicalTrials.gov
What's tested:Pegvaliase

At a glance

Recruiting sites
4 of 4 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Pregnancy outcome and infant development for women who have been treated with Palynziq (pegvaliase) within 2 weeks of their last menstrual period
Measured over 10 years
Phenylketonuria, Maternal
4 sites across 4 states
North Carolina1
Canada1
Germany1
Italy1
  • Medical Director, MD · STUDY_DIRECTOR · BioMarin Pharmaceutical

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Eligibility criteria

Inclusion

Subject (or a legally authorized representative) consent obtained prior to enrollment. Consent will be obtained in compliance with any country-specific regulations or requirements
Confirmation of ongoing pregnancy. Subjects with unknown outcomes will be classified as prospective pregnancies; subjects who have undergone prenatal testing (eg, targeted ultrasound, amniocentesis) regardless of findings will be classified as retrospective pregnancies
Diagnosed with PKU per local standard of care
Documentation that the subject was treated with pegvaliase at any point starting from 2 weeks prior to the date of LMP
Agrees to permit the Investigator (ie, CRP, CCA, PI) to contact the subject's HCPs (eg, PCP, PKU-treating physician, OB, nurse, midwife) and the infant's HCP (eg, pediatrician, neonatologist) for medical information
  • Pregnancy outcome and infant development for women who have been treated with Palynziq (pegvaliase) within 2 weeks of their last menstrual period10 years

    To estimate the frequency of pregnancy outcomes (eg, spontaneous abortion, stillbirth, live birth, and termination) among subjects with PKU treated with pegvaliase during pregnancy and fetal/infant outcomes (all major congenital malformations \[MCMs\] and specifically microcephaly and congenital heart defects\], FGR, small for gestational age \[SGA\], low birth weight, preterm birth, failure to thrive, and developmental delays) among their offspring exposed to pegvaliase during pregnancy.