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Purpose: This systematic review and meta-analysis aimed to compare the therapeutic effects of rFSH versus uFSH/uHMG on ovarian stimulation in women undergoing assisted reproductive technology. Methods: The databases of PubMed, Embase, and the Cochrane Library were systematically searched to retrieve data on eligible trials from inception until July 2022. The relative risks (RRs) or weighted mean differences (WMDs) with 95% confidence intervals (CIs) were applied to assess categorical and continuous outcomes, and the pooled results were calculated using the random-effects model. Sensitivity, subgroup, and publication bias analyses were also performed. Results: Forty-eight trials that enrolled 10,127 women were included in this quantitative meta-analysis. There were no significant differences between rFSH and uFSH/uHMG in the clinical pregnancy rate (RR: 1.01; 95% CI 0.95–1.07; P = 0.760), live birth rate (RR: 0.98; 95% CI 0.91–1.06; P = 0.665), multiple pregnancy rate (RR: 0.92; 95% CI 0.77–1.09; P = 0.320), miscarriage rate (RR: 1.17; 95% CI 0.94–1.46; P = 0.151), and the incidence of ovarian hyperstimulation syndrome (RR: 1.25; 95% CI 0.91–1.70; P = 0.164). In addition, the administration of rFSH was associated with a higher number of oocyte retrieval compared with that of uFSH/uHMG (WMD: 0.61; 95% CI 0.03–1.20; P = 0.038), while no significant differences were found between rFSH and uFSH/uHMG in the dosage of gonadotrophin (WMD: 14.80; 95% CI − 136.97 to 166.57; P = 0.848) and the duration of ovarian stimulation (WMD: − 0.26; 95% CI − 0.62 to 0.10; P = 0.152). Thus, the exploratory analyses revealed several potential differences in the effects of rFSH versus uFSH/uHMG on ovarian stimulation. Conclusion: The administration of rFSH significantly increased the number of oocytes retrieved, whereas there were no significant differences between the efficacies of rFSH and uFSH/uHMG for pregnancy outcomes. [ABSTRACT FROM AUTHOR]

Background: Allylestrenol is an oral progestogen being increasingly used for luteal phase support in assisted reproductive techniques. However, evidence of the clinical efficacy of allylestrenol in luteal phase support is lacking. Dydrogesterone is a representative drug used for luteal phase support, the efficacy of which has been clinically confirmed. As such, we aimed to compare the effects of allylestrenol with the standard dydrogesterone on clinical pregnancy rates and pregnancy outcomes. Methods: This retrospective study included 3375 assisted reproductive technique cycles using either allylestrenol or dydrogesterone between January 2015 and March 2020. Patients using either allylestrenol or dydrogesterone were matched in a 1:1 ratio using propensity scores. The primary outcomes were clinical pregnancy rate and pregnancy outcomes. Results: No significant difference was found in the clinical pregnancy rate (53.5% vs. 53.2%, P = 0.928) and pregnancy outcomes (all P > 0.05) between allylestrenol and dydrogesterone. Compared with dydrogesterone, the use of allylestrenol significantly reduced the rate of biochemical pregnancies (6.4% vs. 11.8%, P < 0.001) and multiple gestation rate (16.8% vs. 26.3%, P = 0.001). Moreover, endometrial thickness, morphology, and blood flow were significantly improved by allylestrenol treatment (all P < 0.05). Conclusions: Allylestrenol exhibited similar effects on clinical pregnancy rates and pregnancy outcomes as dydrogesterone. Moreover, allylestrenol can significantly reduce the biochemical pregnancy rate and improve the endometrial receptivity. [ABSTRACT FROM AUTHOR]

Objective: To investigate the predictive value of three-dimensional ultrasound assessment of endometrial receptivity in PGD/PGS transplantation patients on pregnancy outcome. Methods: 280 patients undergoing PGD/PGS transplantation were enrolled and divided into group A and group B according to the patients' pregnancy outcomes. The general conditions, endometrial receptivity indexes of the two groups were compared. Multifactorial logistic regression analysis was used to determine the factors influencing pregnancy outcome in PGD/PGS transplant patients. ROC curves were plotted to analyze the predictive value of 3D ultrasound parameters on pregnancy outcome. The results of the study were validated with patients who underwent FET transplantation, and the patients in the validation group were treated with the same 3D ultrasound examination method and treatment plan as the observation group. Results: The differences in basic situations between two groups were not statistically significant (P > 0.05). The percentage of endometrial thickness, endometrial blood flow, and endometrial blood flow classification type II + II were higher in group A than in group B (P < 0.05). Multifactorial logistic regression analysis showed that endometrial thickness, endometrial blood flow and endometrial blood flow classification were influencing factors of pregnancy outcome in PGD/PGS patients. The sensitivity of predicting pregnancy outcome based on the results of transcatheter 3D ultrasound was 91.18%, the specificity was 82.35%, and the accuracy was 90.00%, which has a high predictive value. Conclusion: 3D ultrasound can predict pregnancy outcome by assessing the endometrial receptivity of PGD/PGS transplantation, in which endometrial thickness and endometrial blood flow have a good predictive value. [ABSTRACT FROM AUTHOR]