Randomized Controlled Trial of Autologous Endometrial Coculture Versus Traditional in Vitro Fertilization.

OBJECTIVE: To determine if autologous endometrial cell coculture improves embryo development and clinical outcomes. STUDY DESIGN: Patients who met the inclusion criteria were randomized to either traditional in vitro fertilization (IVF) (control, n=73) or autologous endometrial cell coculture (AECC) (n=61). All patients underwent endometrial biopsy on cycle day 5–10 post luteinizing hormone surge. A total of 129 patients underwent embryo transfer (69 control, 60 AECC). Clinical outcomes as well as embryonic quality measures were then compared between the 2 groups. RESULTS: The mean age, day 3 follicle-stimulating hormone, number of oocytes collected, and clinical outcomes were similar between the 2 groups. Embryo development was overall similar, with the exception that embryonic grade was significantly better with AECC than with control: 1.5 (0.04) vs. 2.6 (0.03), p<0.0001. There was no difference in implantation, live birth or multiple gestation rates. CONCLUSION: This is one of the largest prospective randomized controlled trials of AECC versus traditional IVF. There was significant improvement in embryo morphology in the coculture group, although clinical outcomes were similar between the groups. Further studies are necessary to achieve enough power to fully delineate the effects of coculture on IVF outcome.