NCT05734521 · Sanofi
Avalglucosidase Alfa Pregnancy Study
What this study is about
This is a worldwide, descriptive safety study collecting data on women and their offspring exposed to avalglucosidase alfa during pregnancy and/or lactation, to assess the risks of avalglucsodiase alfa on pregnancy and maternal complications and adverse effects in the developing fetus, neonate, and infant.
View original scientific description
This is a worldwide, descriptive safety study collecting data on women and their offspring exposed to avalglucosidase alfa during pregnancy and/or lactation, to assess the risks of avalglucsodiase alfa on pregnancy and maternal complications and adverse effects in the developing fetus, neonate, and infant. * Outcomes in exposed infants, including growth and development, will be assessed through at least the first year of life. * Data will be collected for approximately 10 years.
Interventions
BIOLOGICAL
avalglucosidase alfa-NGPT (GZ402666) IV
intravenous infusion
BIOLOGICAL
avalglucosidase alfa-NGPT (GZ402666)
exposed via pregnancy and lactation
Primary outcome measures
Maternal complications
Time frame: through study completion, an average of 10 years
Prevalence of pregnancy/labor/delivery/postpartum maternal complications
Pregnancy outcome
Time frame: through study completion, an average of 10 years
Prevalence of live births, spontaneous abortions (\<20 weeks of gestation), elective terminations, ectopic pregnancies, early fetal deaths (20 to 27 weeks of gestation), late fetal deaths (≥28 weeks of gestation), stillbirths and maternal deaths
Infant outcome
Time frame: through study completion, an average of 10 years
Number of occurrences of major congenital anomalies, neonatal deaths, development delays (growth, motor, neurologic, behavioral) through first year of life. Major congenital anomalies defined using the US Centers for Disease Control and Prevention (CDC) and growth and development assessments using CDC's Developmental Milestones 2021.
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
- Women and their offspring exposed to avalglucosidase alfa during pregnancy and/or lactation for whom an Individual Case Safety Report (ICSR) has been submitted to the Sanofi Global Pharmacovigilance (PV) department, and/or,
- Women exposed to avalglucosidase alfa during pregnancy and/or lactation who have provided informed consent to enroll in the Pompe Pregnancy Sub-registry.
Exclusion criteria
- There are no exclusion criteria in this study. The above information is not intended to contain all considerations relevant to a potential participation in a clinical trial.
Where
- Bridgewater, New Jersey
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 Jan 16, 2026 · Source of record for eligibility and locations