RecruitingBiological interventionAvalglucosidase Alfa Pregnancy StudyThis 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.