Prospective Registry Investigating Maternal and Infant Outcomes in Anifrolumab Users

PRIMULA Preg (Prospective Registry Investigating Maternal and Infant Outcomes in Anifrolumab Users) is a prospective, observational cohort study designed to evaluate the association between anifrolumab exposure during pregnancy and subsequent adverse maternal, fetal, and infant outcomes. This study will fulfil an FDA post-marketing requirement.

PRIMULA Preg (Prospective Registry Investigating Maternal and Infant Outcomes in Anifrolumab Users) is a US-based, prospective, observational cohort study designed to evaluate the association between anifrolumab exposure during pregnancy and subsequent adverse maternal, fetal, and infant outcomes. The objective of the pregnancy registry is to compare adverse maternal, fetal, and infant outcomes of pregnant individuals with moderate/severe systemic lupus erythematosus (SLE) who are exposed to anifrolumab during pregnancy with outcomes in an internal comparison cohort of pregnant individuals with moderate/severe SLE who are not exposed to anifrolumab during pregnancy. Participation in the registry is voluntary and participants can withdraw their consent to participate at any time. The study is strictly observational; the schedule of office visits and all treatment regimens will be determined by HCPs. Only data that are documented in patients' medical records during medical care will be actively collected. No additional laboratory tests or HCP assessments will be required as part of this registry. This study will fulfil an FDA post-marketing requirement.

Inclusion Criteria: Exposed cohort 1. Currently or recently (within 1 year of pregnancy outcome) pregnant 2. Diagnosis of moderate/severe SLE 3. Consent to participate 4. Authorization for their HCP(s) to provide data to the registry 5. Exposure to at least 1 dose of anifrolumab at any time during pregnancy Unexposed cohort 1. Currently or recently pregnant 2. Diagnosis of moderate/severe SLE 3. Consent to participate 4. Authorization for their HCP(s) to provide data to the registry 5. Exposure to other products for the treatment of moderate/severe SLE Exclusion Criteria: Exposed cohort 1. Occurrence of pregnancy outcome prior to first contact (for enrollment) with the Virtual Research Coordination Center (retrospectively enrolled) 2. Exposure to known teratogens and/or investigational medications during pregnancy Unexposed cohort 1. Occurrence of pregnancy outcome prior to first contact with the Virtual Research Coordination Center (retrospectively enrolled) 2. Exposure to known teratogens and/or investigational medications during pregnancy