Margulis AV, Anthony M, Rivero-Ferrer E. Drug safety in pregnancy: review of study approaches requested by regulatory agencies. Curr Epidemiol Rep. 2019 Sep;6(3):380-9. doi: 10.1007/s40471-019-00212-6.

PURPOSE OF REVIEW: We reviewed postauthorization pregnancy safety studies requested by regulatory agencies to explore which study approaches have been typically requested and to what extent these have changed over time.

RECENT FINDINGS: The most common study approach requested by the US Food and Drug Administration (FDA) is pregnancy exposure registries (observational cohorts with prospective data collection), per the FDA’s Postmarketing Requirements and Commitments (PMR/PMC) database. Since 2017, this requirement has often been paired with a request for a database study (observational study using preexisting electronic health care data), both approaches assessing pregnancy and fetal outcomes. From studies registered in the European Union electronic Register of Post-Authorisation Studies, we observed a similar number of pregnancy exposure registries and database studies, both approaches also assessing pregnancy and fetal outcomes. In requests for drugs approved since 2014, preference appears to have shifted toward studies using preexisting electronic health care databases from multiple countries.

SUMMARY: Pregnancy exposure registries have been the most commonly requested study approach on drug safety in pregnancy. Recent regulatory requests and activities denote an increasing interest in other approaches.

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