IVF and ICSI outcomes of female patients with X chromosome mosaicism: A 5-year retrospective cohort study

BackgroundThis study focused on the assisted reproductive treatment (ART) outcomes of female patients with X chromosome mosaicism (XM), who underwent their first IVF/ICSI and day 2 or day3 fresh embryo transfer, and the possible impacts of the different mosaic types.Results78 couples with XM female and normal male were included as the X group. 78 couples with normal karyotype were included as the control group. Subgroup X1 included 41 45,X/46,XX cases, Subgroup X2 included 23 47,XXX/46,XX cases, and Subgroup X3 included 13 45,X/47,XXX/46,XX cases. With similar female age and similar body mass index (BMI), the X group had higher total gonadotropin (Gn) dosage than the control group (1800 IU VS 1612 IU). In subgroup analysis, the follical number during oocyte retrieval was less in subgroup X1 than that in X2 or X3. The fertilization rate was lower in subgroup X1 than that in subgroup X2. The utilization rate was higher in subgroup X2 than that in subgroup X3. The implantation rate, clinical pregnancy rate, and miscarriage rate before 12 weeks' gestation were similar in all groups.ConclusionsFemale with 45,X cell line may face higher Gn dosage, less follical number during oocyte retrieval and fewer embryos. But female with X chromosome mosaicism may have similar clinical pregnancy rate and miscarriage rate after fresh embryo transfer.