Synopsis
The evidence to date regarding corticosteroid exposure in pregnancy and select pregnancy and birth outcomes is limited and inconsistent. Here we provide a narrative review of published literature summarizing the findings for oral clefts, preterm birth, birth weight, preeclampsia and gestational diabetes mellitus. Whenever possible, the results are limited to oral or systemic administration with a further focus on use in autoimmune disease. Although previous studies of corticosteroid exposure in pregnancy reported an increased risk of oral clefts in the offspring, more recent studies have not replicated these findings. Further, most of the literature lacks robust statistical analysis accounting for underlying disease or disease activity. The evidence to date suggests that first trimester corticosteroid use may confer a small increase in the odds of cleft lip with or without cleft palate, although data are conflicting and it is unknown to what extent the underlying maternal disease may contribute. There is little support that systemic corticosteroid use in pregnancy independently causes increases in risks of preterm birth, low birth weight, or preeclampsia. There is not sufficient evidence to determine whether corticosteroids could contribute to gestational diabetes mellitus.