Immunomorphological Features of the Placenta in Allogeneic Pregnancy as the Background for the Development of Obstetric Complications.

Objective: To study the structural and immunohistochemical features of placentas in women after assisted reproductive technology (ART) with allogeneic eggs (oocyte donation and surrogate motherhood).

Study Design: The study involved 89 women whose pregnancy occurred as a result of in vitro fertilization (IVF) with a donor egg in a surrogate motherhood program (IVF-SM, n = 47 patients) or oocyte donation (IVF-DO, n = 42). The comparison group consisted of 21 patients in whom pregnancy occurred as a result of IVF with their own egg (IVF-OE).