Embryo Transfer Boosts Pregnancy Success in Women with IBD
New research shows women with inflammatory bowel disease (IBD) have dramatically higher pregnancy rates with embryo transfer (73%) than with intrauterine insemination (10%), especially if they have had prior pelvic surgery.
Women with inflammatory bowel disease (IBD) achieved pregnancy in 73% of embryo transfer attempts, compared to just 10% of intrauterine insemination (IUI) attempts. The data comes from the WIsDoM study, a large North American cohort analysis presented by Eugenia Shmidt, MD, of the University of Minnesota in Minneapolis.
Among 52 women who underwent fertility treatment with IUI, embryo transfer, or both, 38 conceived. This represents a 73% overall pregnancy rate for the group. Across 97 individual treatment attempts, the pregnancy success rate was 41%. The adjusted odds of achieving pregnancy with embryo transfer were 44 times higher than with IUI.
| Treatment Type | Pregnancy Success Rate | Number of Women |
|---|---|---|
| Embryo Transfer | 73% | 39 (with or without IUI) |
| IUI Only | 10% | 13 |
Of the 67 women in the study who underwent at least one fertility treatment, 56.7% had active IBD disease at the time. In a comparison group not seeking fertility treatment, 43.5% had active disease.
Impact of prior pelvic surgery on treatment choice
Prior pelvic surgery significantly influenced outcomes. Among the nine women with a history of IBD-related pelvic surgery, seven who underwent embryo transfer conceived. Neither of the two women in this subgroup who attempted IUI alone became pregnant.
Overall, 16.4% of women in the fertility treatment group had prior pelvic surgery, compared to 5.4% in the non-fertility treatment group. Dr. Shmidt noted this subgroup is too small for definitive statistical conclusions. She suggested, however, that women with prior pelvic surgery may benefit from going directly to embryo transfer rather than delaying with unsuccessful IUI cycles.
Expert interpretation and clinical implications
Study authors emphasize that choosing the right treatment method is critical. Eugenia Shmidt stated that "modality selection is paramount." She concluded that the findings suggest clinicians should consider early referral to IVF and embryo transfer, rather than prolonged IUI trials in women with IBD, and particularly in those with prior pelvic surgery.
Another expert, Dr. Gottlieb, observed that the success gap between embryo transfer and IUI was considerably wider for women with IBD than in the general population. She also noted that cost and insurance barriers to embryo transfer deserve attention due to the financial and emotional toll of repeated failed IUI cycles. Shmidt encouraged gastroenterologists to raise the topic of family planning early in patient care.
Clinicians should consider early referral to IVF and embryo transfer rather than prolonged IUI trials in women with IBD, particularly those with prior pelvic surgery.
