The reduced chance of a live birth in women with IBD receiving assisted reproduction is due to a failure to achieve a clinical pregnancy

We recently reported that for women with UC receiving assisted reproductive technology (ART) treatment, the chance of a live birth after each embryo transfer cycle decreased significantly. In women with Crohn's disease (CD), the chance of a live birth after each embryo transfer cycle also decreased but was not significant in the fully adjusted regression model.1 In our study, we chose the outcome live birth because it was the most important clinical outcome for patients with UC and CD undergoing ART. After demonstrating the negative effects of UC and CD on chances of live birth, we wish to update our readers by exploring where along the process from fertilisation through pregnancy the risk of delivering a live born child decreases. Is the reduced chance of live birth due to (1) a reduced chance of conceiving after an ART cycle? and/or (2) a reduced chance of maintaining a fetus …