NCT05579548 · BioMarin Pharmaceutical
A Global, Multicenter Study to Assess Maternal, Fetal and Infant Outcomes of Exposure to Palynziq® (Pegvaliase) During Pregnancy and Breastfeeding
(PALomino)
What this study is about
This is a Phase 4 observational study designed to assess the impact of Palynziq ® (pegvaliase) treatment in pregnant women with PKU and on their offspring who were exposed to pegvaliase at any time during pregnancy and breastfeeding.
View original scientific description
This is a Phase 4 observational study designed to assess the impact of Palynziq ® (pegvaliase) treatment in pregnant women with PKU and on their offspring who were exposed to pegvaliase at any time during pregnancy and breastfeeding.
Interventions
DRUG
Pegvaliase
Pregnant women exposed to pegvaliase within 2 weeks prior to LMP.
Primary outcome measures
Pregnancy outcome and infant development for women who have been treated with Palynziq (pegvaliase) within 2 weeks of their last menstrual period
Time frame: 10 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.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- 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
Exclusion criteria
- • Currently participating in a BioMarin sponsored interventional study of any investigational product, device, or procedure
Where
- Wilmington, North Carolina
Collaborators
Syneos Health
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Mar 24, 2026 · Source of record for eligibility and locations