Editorial: Are thiopurines and anti-TNFα agents safe to use in pregnant patients with inflammatory bowel disease?

Inflammatory bowel disease affects women in their peak reproductive years. Increased disease activity during pregnancy has been associated with adverse outcomes. Thus, it is recommended that immunosuppressant medications be continued during pregnancy. However, data regarding the safety of these medications during pregnancy are sparse and often conflicting. The study by Casanova et al. (1) adds to the growing evidence that the use of thiopurines and anti-TNFα agents during pregnancy does not increase the risk of birth defects. Results from prospective studies with longer follow-up are needed to fully understand the impact of thiopurines and anti-TNFα agents on child development and maturation of the immune system.