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iPLEDGE is a rigorous program initiated in 2006 to reduce fetal exposure to isotretinoin, a disease-modifying medication for acne that carries a risk of teratogenesis. Despite the imposition of iPLEDGE requirements on patients and clinicians, the scope of isotretinoin-related adverse events is unknown.

To determine the frequency and rate of pregnancy and pregnancy-related adverse events among women taking isotretinoin reported to the US Food and Drug Administration (FDA).

Pregnancy reports from the FDA Adverse Event Reporting System, a public database of medication adverse event reports filed by prescribers, consumers, and manufacturers, were used to perform a retrospective analysis of pregnancy-related adverse events associated with isotretinoin from January 1, 1997, to December 31, 2017. Each individual reporting any pregnancy-related …