Assisted Reproductive Techniques and Pregnancy Results in Women with Mayer-Rokitansky-Küster-Hauser Syndrome Undergoing Uterus Transplantation: the Czech Experience
Abstract
Study Objective: This study aimed to evaluate the reproductive potential of patients with Mayer-Rokitansky-Küster-Hauser syndrome (MRKHS) who were candidates for uterus transplantation (UTx) before inclusion in the experimental trial, and to summarize the existing experience with posttransplantation embryo transfers in functionally successful cases. Design and Setting: A prospective study at a tertiary medical center.
Participants: Ten pre-UTx women with MRKHS and 7 successful UTx cases. Interventions and Main Outcome Measures: Ovarian stimulations, frozen embryo collection, embryo transfers, and incidence of pregnancy in MRKHS women in the pre- and posttransplantation periods.
Results: The average number of ovarian stimulations to collect the required frozen embryos was 1.9 (1-3). On average, the number of aspirated oocytes was 16.4 (7-38), 12.6 (5-26) oocytes were fertilized, and 7.0 (1-18) embryos were cryopreserved per cycle.
To date, the average number of embryo transfers per recipient was 4.9 (3-8), and the embryo transfer/pregnancy rate was 8.8% (3 of 34). Three pregnancies have been achieved to date, including a missed abortion in the 8th week, a birth in the 35th week, and an ongoing pregnancy in the 30th week.
Conclusions: Despite the small number of UTx cases, our data indicated that women with MRKHS showed a good response to ovarian stimulation and blastocyst formation. Although the procedures for fertilization, cryopreservation, and transfer of the embryos were standardized, the success rate per embryo transfer achieved in the study group has been low to date.